Some of the major role of PVC stabilizer of some

PVC stabilizer is there are many, and see what kind of material you more specific selection. Common are lead salt stabilizer, such stabilizers because of environmental problems have been gradually withdrawing from the international market, but there are some  WSD Titanium dioxide rutile domestic manufacturers use when doing no material environmental requirements; metal soap stabilizers, mainly stearic salt, is generally not used alone, often between the metal soaps with each other or with lead salt stabilizer, etc. and use; composite stabilizer, contains more species, zinc composite stabilizer barium, calcium, zinc composite stabilizer, lead salt composite stabilizer, but it should be noted that the lead salt composite stabilizer is the use of technical means to solve some of the small lead salts powder easily float resulting inhalation toxicity problems in the processing of the dispersion there is a certain improvement, but with the ordinary The lead salt stabilizer, like it or not environmentally friendly; organometallic compounds, such as organic tin, antimony organic stabilizers are used in transparent PVC products; organic stabilizers, such stabilizers in the country rarely used; rare earth stabilizer. These are the ingredients from the stabilizer to classify, but it can also be classified as a powder and a liquid, transparent and opaque, not one described here. I hope my answer can bring you some help. A plastic heat stabilizer by type heat stabilizers are a class of polymers can prevent or reduce the heat in the course of processing and degradation or cross-linking additives to extend the life of the composite material. Usual stabilizers can be divided into categories according to the main component of salt, fatty acid soaps, organotin compounds, heat stabilizers, and the pure compound classes of organic compounds.
 1) Heat stabilizer salt: salt stabilizer is the combination of the "base" of lead salts of inorganic and WSD stearic acid  organic acids, such stabilizer having excellent heat resistance, weather resistance and electrical insulating properties, low cost transparency is poor, there is a certain toxicity, dosage is generally 0.5% to 5.0%. (Source Global polyurethane network) 2) a fatty acid based heat stabilizer: Such a thermal stabilizer is a compound of a fatty acid composition of roots and metal ions, also called metal soap heat stabilizers, acid groups, and its performance and the kind of metal ions , generally the amount of 0.1% to 3.0%. 3) organotin heat stabilizers: class PVC heat stabilizer molecule with chlorine atoms to form unstable ligand and the ligand organotin carboxylate group and a chlorine atom unstable replacement. Features such heat stabilizers are high stability, good transparency, heat resistance, the downside is expensive. 4) Composite type heat stabilizer: Such a thermal stabilizer is a metal salt or soap as  WSD Azodicarbonamide a kind of liquid or solid based compound and an organic tin-based compound, wherein the metal salts are calcium - magnesium - zinc, barium - calcium - zinc, barium - zinc and barium - cadmium; common organic acids such as organic acids, naphthenic acid, oleic acid, benzoic acid and salicylic acid.

Wood Preservation of aluminum sulfate application

 Timber vulnerable to wind and rain, susceptible bacteria, insects, and other biological marine borer attack corrosion. Therefore, for the wood and its products prior to use , depending on the application environment , will choose the appropriate preservative embalming . As PVC heat stabilizer for window  well as sizing and aluminum sulfate , water treatment coagulant , but also can be used for wood preservative treatment.
Aluminum sulfate in the wood preservative application
Currently, the most commonly used are water-soluble wood preservative chemicals . The aluminum sulfate is a kind of water-soluble gel , but also has insecticidal potency, it is in the timber industry as insects and preservatives. Fuel industry, in the production of chrome yellow and color lakes made ​​the precipitating agent , and a filler while underway fixing role . In addition, aluminum sulfate in the printing intenal lubricant  industry as a mordant . In addition, as a clarifying agent in oil industry , oil industry, deodorant bleaching agents, pharmaceutical industry convergence agents .
Advantages of wood preservative preservative
Application of aluminum sulfate and other wood preservative wood preservative applications , the wood was dry condition , with corrosion, mildew, moth , termite invasion, improvement of timber stability , easy to color , moisture and hydrophilic advantages. Aluminum sulfate in the construction industry can not only be used as a wood preservative applications, but also can be used as activator in cement composite material is  PVC processing aid a monolithic refractories raw materials. It is soluble in water to make the water and natural rubber fine particles agglomerate into large floc, thereby removing from the water , so as water supply and wastewater coagulant. Aluminum sulfate , also known as water .

Fluorescent Brightener some of the major role

I: Fluorescent Brightener BC: Appearance light yellow powder. This product is mainly used for cotton , rayon , rayon and pulp and other neutral dye bath whitening treatment .
Two : Fluorescent brightener JD-3: Appearance light yellow powder , soluble in hot water. This product is in neutral tin stabilizer  or slightly alkaline conditions, for synthetic detergent , soap , paper and textiles whitening.
Three : Fluorescent brightener advance 31 #: Appearance light yellow powder , the product is mainly used for synthetic detergent , soap , soap , paper whitening , also used cotton fabric , nylon , rayon and other whitening can be whitening substance that is added Baifa Liang . IV: Fluorescent Brightener Dioctyl phthalate  BR ( Brightener BL): sodium salt composition of DSD phenylisocyanate condensates , the appearance of a pale yellow powder , an anionic , microstrip red purple. 2% solution clarified , more than 95% through a 60 mesh sieve. Five: Fluorescent Brightener EBF Composition: This product is mainly used for polyester, nylon and acetate fiber whitening can  liquid stabilizer also be used for synthetic fiber and cotton, wool blended fabric whitening . Six : Fluorescent brightener R: DSD sodium salt composition of phenyl isocyanate condensates , the appearance is white to pale yellow powder. This product is mainly used as a synthetic brighteners .
Eight : Fluorescent Brightener ER ( brightener PS-1): This product is used for polyester, polyester / cotton blended fabric whitening . Treated fabric with its whiteness, shade net . Has excellent washability , light fastness and resistance to sublimation .

zinc stearate some of the main hazards

Zinc stearate : Mixture Zn (C18H35O2) 2 632.2
WARNING ! Dust in the air to form an explosive concentration
Hazard class hazardous .
Health Hazard Class 2 - Moderate ( biological )
Ene hazard class 2 can - Moderate
Reactivity level 1 - mild
Zinc stearate : skin contact, eye contact , chronic exposure , medical history contraindications , excessive inhalation PVC heat stabilizer for profile  of dust can cause coughing and breathing difficulties. Eating large doses can cause abdominal cramps and diarrhea. Cause skin irritation ; prolonged contact may cause skin eczema. Cause eye swelling and pain . Excessive inhalation may cause long-term worsening of the chemical pneumoconiosis, verticillium wilt and pulmonary edema. Persons suffering from skin diseases, respiratory failure or pulmonary disease who avoid exposure to such dust calcium stearate dissolved in toluene , ethanol, benzene and other  Polyethylene wax organic solvents , insoluble in water , slowly heated to 400 ℃, decomposition, combustible , case decomposition of stearic acid and corresponding calcium salt , water absorption, non-toxic. Calcium stearate as PVC stabilizers and lubricants , non-toxic , non- polluting sulfide . Long-term thermal stability.
Calcium stearate uses:
 Calcium stearate heat stabilizer for PVC and a variety of plastics processing lubricant , release agent . In rigid products , and the base of lead salts , lead soap can increase the coagulation of speed. Also used in food packaging, medical equipment and other requirements nontoxic soft iron oxide yellow  film and equipment. Can be made of polyethylene , polypropylene , halogen absorbent to remove residual catalyst and stability of color adverse effects. As a plasticizer in rubber processing , grease thickening agent, textile waterproofing agent , paint flatting agents, plasticizers and other manufacturing plastic album . Also used in pencil manufacturing and pharmaceutical , perfume industry .

organic pigments elaborated

Refers to a series of paint colors and other characteristics , a class made ​​up of organic pigments. Pigments features include Fast , resistance to flooding , acid and alkali resistance, organic solvents , heat , crystal stability, dispersion and hiding power . Organic pigments and dyes difference is that it is colored objects with no affinity  magnesium hydroxide flame retardant only by adhesive or film material will be attached to the surface of organic pigments , or mixed inside the object , the object colored. Intermediates required for its production , production equipment and synthetic dye production processes are similar, it is often the organic pigment in the dye industry to organize production. Organic pigments and inorganic pigments generally compared to typically have high tinting strength , easy to grind and disperse particles , not precipitation, colors are more vivid , but the Light, heat, weather and poor performance . Organic pigments commonly used in inks, paints, rubber products, plastic products , stationery and supplies and other materials coloring. Common varieties currently on the market are the following categories :
Molecular structure of azo pigments containing azo group (-N = N-) water-insoluble organic compounds in the organic pigment is most varieties and yield the largest category . Azo pigment is an aromatic or heteroaromatic amine obtained by diazotization of an aromatic diazo component and then with acetyl amine 2 - naphthol, pyrazolone 2 - hydroxy - 3 - naphthoic acid or 2 - hydroxy- -3 - naphthoyl aromatic amines by coupling a coupling component , to form water -insoluble precipitate , which is generally an azo pigment . The synthetic method and the same dyes , but the  plastic flame retardant latter is water soluble. Azo pigments generally used as orange, yellow and red pigments such as : Permanent Orange RN (CI Pigment Orange 5 ) , golden red (CI Pigment Red 21 ) , Benzidine Yellow G (CI Pigment Yellow 12 ) . To improve the light fastness , heat resistance, resistance to organic solvents and other pigment properties , by condensation of two molecules of an aromatic diamine as macromolecules . The pigment thus prepared is called macromolecules such as pigments or condensed azo pigments : macromolecules Orange 4R (CI Pigment Orange 31 ) , molecules of red R (CI Pigment Red 166 ) .
Lake water-soluble dye ( such as acid dyes , direct dyes , basic dyes, etc. ) generated by the action of a precipitating agent and a water-insoluble pigment . Its shade more brilliant , chromatography than the whole, low production costs, than the original water-soluble dyes high light fastness . Precipitant mainly inorganic salts, acids , carrier. Inorganic salt precipitate is barium , calcium chloride, manganese sulfate, water-soluble dyes  intenal lubricant as precipitating agent and the reaction of water-insoluble barium, calcium , manganese salts such as : Permanent Red F5R (CI Pigment Red 48 : 2 ) , Lake Red C (CI pigment Red 53:1 ) . Is the use of phosphoric acid precipitation - molybdic acid , phosphoric acid - acid , tannic acid, etc. as a precipitating agent reacts with the water-soluble alkali insoluble dye lakes such as : Fast Rose Lake (CI Pigment Violet 1 ) , emitted light violet (CI Pigment violet 3 ) . The carrier is a water-soluble dye deposited precipitate aluminum hydroxide , barium sulfate , etc. on the surface of the support , to form water-insoluble precipitate neutral colors such as : acid yellow lake (CI Pigment Orange 17 ) , light blue lake lake

PVC stabilizer of the two components of PVC

The various components of PVC stabilizer properties of PVC are different , it is also different methods . Here mainly on the content and the carboxylic acid content of lanthanum research methods to make a brief introduction.
Processing aids in the lanthanum content on PVC performance. Congo red method using color comparison method of  white foaming agent lanthanum -based ionomer thermal stability of PVC . Huck torque rheometer use of PVC plastics study its performance. The use of tensile test , study its effect on the mechanical properties of PVC . Use visible spectrophotometer, characterize the impact of PVC transparent . By FT-IR, DSC, DMTA lanthanum  titanium dioxide content in combination with the ionomer inquiry structure and the performance impact of PVC causes.
Processing aids in the carboxylic acid content of PVC performance. Congo red method of using the different carboxylic acid content of lanthanum -based ionomer thermal stability of PVC . Huck  iron oxide black torque rheometer use of PVC plastics study its performance. By FT-IR, DSC, DMTA conjunction with, explore the carboxylic acid content processing aid in the thermal stability of PVC and plasticizers performance reasons .

stabilizers and mechanism by Type

A plastic heat stabilizer by category
Is a kind of heat stabilizers to prevent or reduce the polymer in the course of processing by heat degradation or crosslinking, extend the period of
Aggregate material life additives. Stabilizers commonly be divided into categories according to the plastic flame retardant  main component base, fatty acid soaps,
Organic tin compounds, composite heat stabilizer and pure organic compounds.
1) base heat stabilizers: base with stabilizers is the "base" of the lead salt of inorganic and organic acids, such stability
Agent has excellent heat resistance, weather resistance and electrical insulation properties, low cost, poor transparency, toxicity, usually in the amount of 0.5%
~ 5.0%. (Source Global polyurethane network) 2) fatty acids heat stabilizers: These heat stabilizers is defined by the root fatty acid composition of the compounds with metal ions, also known as gold
Is a soap heat stabilizers, radical, and its performance and the kinds of metal ions, the general amount of 0.1% to 3.0%.
 3) Organic tin-based heat stabilizer: These heat stabilizers may be unstable PVC and chlorine atoms in the molecule to form a ligand,
And in ligand organotin carboxylate group and a chlorine atom substitution unstable. Such thermal stabilizers are stability characteristics
High transparency, heat resistance, deficiencies are more expensive.
 4) composite heat stabilizer: This class is the base class of heat stabilizers or metal soap-based compound to a liquid or solid
And organic tin-based compound, wherein the metal salts of calcium - magnesium - zinc, barium - calcium - zinc, barium - zinc and barium - cadmium;
Commonly used organic acids such as organic acids, naphthenic acid, oleic acid, benzoic acid and salicylic acid.
 5) Organic compound heat stabilizers: These thermal stabilizers may be used alone except for a few primary stabilizer (mainly nitrogen-containing organic
Compounds), but also includes high boiling polyols and phosphite, often with metal phosphite stabilizer and used, can improve the composite
Materials, weatherability, transparency, and improve the surface color.
2PVC heat stabilizer mechanism
1) absorption and HCL, inhibit its catalytic automatically. Such stabilizers include lead salts, organic acids, metal soaps with
Organotin compounds, epoxy compounds, phenol salts and metal thiolate salt. They can react with HCL, inhibition PVC de HCL response.
 2) replacement of PVC molecules suppress unstable allylic chlorine atoms off the PVC. Such as organic tin stabilizer unstable molecules of PVC
Chlorine atoms given ligand binding, the ligand, a chlorine atom with an unstable organotin substitution.
3) the addition reaction of a polyene structure, a large conjugated system damage formation and reduce coloration. Unsaturated acid salts or esters containing
There is a double bond, with PVC molecules conjugated diene double bond addition reaction, thereby undermining its conjugate structure, inhibit discoloration. 4) to capture free radicals and prevent the oxidation reaction. Such as adding phenolic heat stabilizers can block off the HCL, is due to the original phenol given H
Sub-radical degradation of PVC macromolecules with radical coupling reaction with O2 to form a substance can not be, and has a thermal stability.
Such thermal stabilizers may have one or several functions of both.
 Ideal PVC heat stabilizer should be a multi-functional substance, or a mixture of some materials, they are able potassium soap  to achieve the following
Functions: First, replacement lively, unstable substituent; second absorption and neutralization evolved in PVC processing HCL, HCL eliminated
Autocatalytic degradation; Third, neutralize or catalytic effect on the degradation of the passivation of metal ions and other harmful impurities; Fourth
Through various forms of chemical reactions can block the continued growth of the unsaturated bond, inhibiting degradation coloring; Fifth preferable to ultraviolet radiation
Protective shielding effect. Generally, heat stabilizers based on their performance with the use of a special, used alone is very rare, and large
Some varieties of a powder, some of which are highly toxic chemicals. For ease of use, to prevent dust poisoning, reduce toxic substances or replaced by non-toxic substances, at home and abroad in recent years developed many kinds of composite stabilizer, for example, the world famous German brand composite stabilizer Bear series, the United States, Germany, Japan, Netherlands and other countries or organotin compound organotin stabilizers have considerable market share in China. Therefore, efforts to promote the application developed in China with high efficiency, low cost, no dust pollution and non-toxic or low toxicity of new composite stabilizer, is the urgent need for the development of the plastics industry. 3PVC processing required heat stabilizer principle analysis
 PVC is the first ideal structure - tail structure-CH2-CHCl-CH2-CHCl-, is quite stable. But so far the PVC synthesis method can not be like synthetic butadiene rubber, as the role of catalyst in Jigger so there are rules for orientation cis butadiene polymerization is a free radical polymerization of vinyl chloride random polymerization, in addition to its stable First - tail structure, as well as the first - the first structure-CH2
-CHCl-CHCl-CH-, tail - tail structure-CHCl-CH2-CH2-CHCl-; generate a coupling disproportionation vinyl Results CH2 = CH-CHCl
-CH2-structure and  organic pigments allyl chloride-CH2-CH = CH-CHCl-CH2 and so on.
Generated in the PVC synthetic allyl chloride, chlorine and tertiary carbon double bond in its molecular chain structure instability, unstable cis
Sequence is: PVC within the molecular chain allyl chloride> tertiary carbon Chlorine> terminal allyl chloride> sec chlorine. PVC processing is easily degraded but because
The PVC molecular chain structure, there is instability factors, such modification not be stabilized, and its decomposition temperature is about 130 ℃, but
PVC resin to be processed into useful articles, molding temperature to above 190 ℃. Therefore, you must add to its junction heat stabilizer
Improved structure for stabilization. Four types of heat stabilizers heat discoloration Comment
Ideal thermal stabilizer should also absorb HCL, remove the active site, the addition of a conjugated polyene chain, from the destruction of carbenium
Sub-salt, to prevent the auto-oxidation and other functions, without generating a catalytic degradation of PVC products. The actual heat stabilizer due to
Has a different function and behave in a different thermal stability characteristics, can be divided into early-type, long type, intermediate type and versatile

fluorescent, transparent dyes

Transparent fluorescent dye chromatography complete series, bright color bright, strong coloring, light resistance excellent heat resistance, and according to the needs of a variety of Acrylic impact modifier  products, you want to get a variety of colors to make your product more beautiful and colorful.
Transparent series fluorescent dye can be widely applied to various plastics (such as PS / AS / ABS / PMMA / PA / PC / PET / PBT / RPVC), and decorative materials, inks, plastics, masterbatch coloring, but also for polyester, polypropylene, polyvinyl chloride, etc. puree coloring. Fluorescent dye is insoluble in water, soluble only in organic solvents, so the application process, you must deal with each case iron oxide red  in advance of its dyeing effect experiment meets the requirements of production technology.
 Fluorescent dyes used in the PP / PE colorants dose should not exceed 0.02%.
 

anti-rust paint with non-toxic paint Research Progress

 Metals and their alloys applications throughout all areas of the national

economy. According to statistics, the global annual metal loss due to

corrosion caused by the  tin stabilizer annual metal production capacity of up to 20% to

40%, about earthquakes, floods, typhoons and other natural disasters, the

sum of six times, resulting in huge economic losses. Meanwhile metal

corrosion damage of equipment and facilities will also affect the stability

of production and disrupt people's lives in order and even lead to

accidents resulting in personal injury. Therefore, the metal corrosion is

very important [1-3]. Organic coatings against corrosion has become by far

the most effective, most economical and most common method [4], with

excellent performance, ease of manufacture, low price and a number of other

methods can not match advantage. And more attention to environmental

protection today, the development of new anti-rust paint environmental

pollution became one of the trends [5,6].
Anti-rust paint anti-rust paint varieties and dosage, as well as with

anti-rust paint binder resin interactions occurring protective properties

of the coating greatly affected [7]. The traditional use of the anti-rust

paint coatings containing more chromium, lead, cadmium and other pigments

such as red lead, lead oxide, and  dibutyl phthalate zinc, barium, lead chromate, with its

mixture of the coating while having good anti-corrosion , but in itself

toxic, and in the production and use of the process will pollute the

environment and health hazards, many countries have strict restrictions on

the use [8]. Therefore, the development of non-toxic anti-rust paint and

coatings efficiently has become imperative. Researchers at home and abroad

have developed a phosphates, molybdates, borates and flake pigments and

other non-toxic and efficient anti-rust paint .
This article describes a variety of non-toxic anti-rust paint corrosion

mechanism and application progress, according to their mechanism of action

divided into: ① physical rust paint; ② chemical rust paint; ③ both

physical and chemical mechanisms of the integrated anti-rust rust-

preventive pigment.
A physical anti-rust paint
 Physical rust pigment itself more stable chemical properties, its anti

-rust pigment itself instead of relying on the mechanism of chemical

activity, but they have to rely on physical properties. Conventional non-

toxic physical rust red iron oxide pigments, mica iron oxide, mica, glass

flake, stainless steel scales, such as aluminum and aluminum paste.
1.1 Iron oxide red
Short red iron oxide red, formula Fe2O3, its crystalline phase with α

-Fe2O3 (used as pigments) and γ-Fe2O3 (used as a magnetic material), and

its crystal structure due to different methods of synthesis, there are

cubic, spherical, needle like type, hexagonal, diamond-and hexagonal

platelets. Red iron oxide is not soluble in water, alkali and acid, only in

the case of heating to dissolve in concentrated acid, insoluble in an

organic solvent and an organic base material, high heat resistance, α-

Fe2O3 general heat resistance up to 1200 ℃. Iron oxide red pigments are

inert, iron oxide pigments in the aluminum hydroxide  most stable, with good weather

resistance, light, water, and the role of the atmosphere is stable, and can

strongly absorb ultraviolet radiation, leaving the protected goods from red

iron UV damage. For rust in the system is based on its dense coating of the

items covered by the shielding effect from physics [13,14], while iron red

rust on the substrate have the ability, the ability of polluted gases,

alkali, coloring force, hiding power. Due to low prices, is used widely in

rust, but the rust resistance 1.2 micaceous iron oxide
Micaceous iron oxide, the main chemical ingredient of α-Fe2O3, is

hexagonal single crystal flake, mica flake as having similar structures, so

called micaceous iron oxide. Its chemical stability, non-toxic and

tasteless, high temperature, UV, also has anti-chalking, rust resistance,

alkali resistance, salt spray resistance, weather resistance and excellent

performance [15].
MIO MIO divided into natural and synthetic micaceous iron oxide two kinds.

Natural micaceous iron oxide is made from natural minerals (eg iron ore)

crushing, sorting, crushing derived, heat resistance up to 800 ℃ or more,

contain more impurities, particle size distribution is uneven. Most of the

world use natural micaceous iron oxide. The synthetic micaceous iron oxide

due to high purity, particle size distribution, with a sense of three-

dimensional sense of strong light, heat resistance is even higher than the

natural micaceous iron oxide

PVC processing aids - the current industry problems

Current industry problems are as follows:
1, MBS technology and development is slow, broad market, but the domestic market share is low.
Even after 20 years of development, but the domestic industry is currently only out of MBS entry stage, none of the  aluminium distearate company's products can be as a processing aid ACR fully compete with foreign products as existing enterprises mostly facing the selection of equipment not advanced enough, synthesis process is unstable, synthetic techniques did not break a series of problems, and even the majority of companies do not own SBR synthetic devices can only buy non-MBS MBS dedicated for the production of styrene-butadiene latex, its product quality can be imagined. At present, the market of products, mostly on price advantage, quality of products used in less demanding PVC products, while in the high-end market, the  black iron oxide market share is small, are simply unable to impact the formation of foreign companies. Imports are expected in 2006 will be 5-6 million tons, more than 70% of total demand.
2, fewer researchers and research institutions, failed to form a scientific and technological force.
MBS Although repeatedly been listed as a national scientific and technological projects, but has yet to get a big breakthrough. Mainly due to fewer researchers, science and technology investment less. Is still the industry's research institutions to conduct their own tests, to seek a breakthrough, but the R & D model with foreign group, compared to the scale of the research team can say relatively amateur.
3, the organic pigments  current domestic and processing aid ACR ACR impact as close to the level of foreign products, but because of CPE price constraints, it is difficult to get promotion, to go out and compete for the international market and foreign products would be a good choice, but single product, poor stability will be the industry problems to be solved.

rare earth composite PVC heat stabilizers advantages

Pvc heat stabilizer in the process, a single-component process stabilizer is to meet the demand. The rare earth pvc heat stabilizer heat stabilizers to play the maximum effect, and only through, and  antimony flame retardant other compound stabilizers for PVC composite can be achieved. According to processing needs, technical support, the type of product, as well as the ratio of the different conditions, the synthesis of rare skin thermal stabilizer is different.
Currently on the market of rare earth compound pvc heat stabilizer generally have the following seven advantages:
1, excellent thermal stability. Rare earth stabilizer either dynamic or static thermal stability are superior to the  traditional system and lead salts of barium, cadmium, zinc stabilizer in products to replace or reduce the use of organic tin products. Development prospects of 2, to promote melting, good processing performance. Rare earth metal salt is added stabilizer may change the rheological properties of materials, and  PVC shoes stabilizer  to promote the melting of the organic tin performance close.
3, coupling compatibilization. Rare stabilizer for PVC products, coupling of each component has a unique compatibilization, can improve the impact strength of products, can promote the increase of the amount of the resin filler.
4, plasticized, toughening. Rare earth metal salt stabilizers and stabilizer compared to a plasticizing the  foaming agent resin, toughening effect.
5, excellent transparency. Dilute ten stabilizers either alone or in combination with organic tin product mix, the optical performance can be organic tin products the same effects when used alone.
6, brightening properties. Rare earth stabilizer used in colored plastic, with a clear and unique brightening functions.
7, the weather resistance. Rare earth stabilizer significantly better anti-aging effects of light on the lead salt stabilizer, organic tin performance equivalent to seven additional stabilizer thin insulating properties and also excellent in safety and hygiene.

toxic PVC heat stabilizers Research Status and Development Trend

Polyethylene, polyvinyl chloride PVC is second only to the world's second-largest synthetic resin production over 90,000, however, PVC there are some difficult to overcome the shortcomings of poor thermal stability which was most prominent. PVC due to poor thermal stability, softening temperature and decomposition temperature difference is small, has caused great difficulties to the process, so the machining process must be a  flame retardant certain amount of heat stabilizer in order to improve its thermal stability. Currently, the largest amount of lead salt heat stabilizer. In building a harmonious society and to ensure sustainable development in mind, people's awareness of environmental protection and health gradually strengthened, therefore, low toxicity, no pollution, has become a complex and efficient PVC heat stabilizers direction of development.
Analysis of the thermal stability tribasic lead sulphate  of PVC resin
PVC imminent completion of the laboratory synthesis, is one of the earliest synthetic thermoplastics, with difficult to burn, good mechanical properties, low prices, abundant source of raw materials, synthetic process maturity and other characteristics, widely used in construction, telecommunications, transportation, electronics, chemicals, packaging and other industries. PVC heat stabilizer to heat or high-energy radiation, such as ultraviolet light "effect occurs under the autocatalytic reaction hcl off, the PVC foaming board stabilizer  thermal decomposition mechanism generally believed that there are three kinds. Oxygen environment of the free radical mechanism; (2) ion mechanism under a nitrogen atmosphere; (3) of the single vacuum molecular mechanisms that affect the thermal decomposition pvc chain structure is the main factor, means branched, double, allyl chloride, head structure of conjugated double bonds and a molecular weight etc. "effect; addition, oxygen, HCL additives and other external factors also have an impact.

Analysis of heat stabilizers

 Heat stabilizers are an important class of plastic of processing aids, heat stabilizers of PVC resin, the  titanium dioxide birth and development simultaneously, mainly for the processing of PVC resin, heat stabilizer and so PVC resin, PVC products, the proportion of hard and soft close relationship. The current global annual consumption of about 500,000 tons, the main varieties of lead salts, organic tin, metal soaps, composite stabilizer and organic additives. Heat stabilizer consumption structure in different countries, in the United States, composite stabilizer total consumption 40% -50%, organic tin accounted for nearly 40%. Heat stabilizers, cadmium, low lead, dust-free, and instead of lead salts to become the  carbon black industry's development priorities. Demanding of environmental regulations is driving the change in heat stabilizers, in order to protect the human living environment, many countries have passed laws limiting toxic heavy metals in PVC processing application. European PVC heat stabilizers manufacturers have made a commitment that by 2010 the amount of heat stabilizers containing lead will be halved by 2015, the full realization of lead-free. Many European countries are using calcium-based or based on organic tin - zinc substitutes instead. The yellow iron oxide  amount of lead stabilizers in Europe in 1999 from 120,000 tons / year reduced to 2010 80,000 tons / year. Asia-Pacific region is expected to lead heat stabilizers demand will also be greatly reduced. Including those based on organic tin system (OBS), including new stabilizer has been widely used in the United States.

Diethylene glycol dibenzoate use features

Diethylene glycol dibenzoate plasticizer which has high efficiency, low toxicity, good compatibility with the polymer, low volatility, low leakage, fillers, large

capacity, high brightness products advantages. Can completely replace DOP, DBP, DHP, can shorten the kneading (variable mixing) time, you can improve the process flow,

reduce temperature plastic bits can be used with other primary and secondary plasticizer miscible moderate alternative in the recipe, no need to change processing

conditions.
Usage: Diethylene glycol dibenzoate compatibility with PVC resin is superior to DOP, DBP, flashpoint above DOP, thus it is in PVC plastic film, calender leather,

plastic sandals, slippers, foam, PVC cable, tendon sole, foamed PVC shoes, rubber shoes materials, doors and windows with travel seal, PVC profiles, soft board, all

kinds of soft, hard pipe, PVC shrink film, PVC twist

Dioctyl phthalate purpose grade

Octyl Dioctyl phthalate plasticizer is important plasticizer general, mainly for the processing of PVC resin, but also for synthetic resins, acetate resins, polymer resins and rubber

processing, can also be used in making paints , dyes, dispersing agent.
General Purpose: Widely used in plastics, rubber, paint and emulsifier and other industries. PVC plasticized with it can be used in manufacture of artificial leather,

agricultural films, packaging materials, cables.
Electrical level: a common level of DOP full performance, but also has good electrical insulation properties, mainly for the production of wires and electricity.
Food Grade: mainly used for the production of food packaging materials.
Medical grade: mainly used for the production of medical health products, such as disposable medical devices and medical packaging materials

Selection Pearlescent Pigments Inks Precautions

Pearlescent printing is screen printing to printing and security printing in the packaging of the more popular new print available, it is mainly used pearl ink pearl luster pearl ink is ink when printed pattern to change the angle, the ink color will change, thereby identify the authenticity. Pearlescent printing printing process is consistent with the traditional printing process, the key lies in the preparation of special light ink, which generally consists of binders, thickeners, pearlescent pigments, solvents, additives and other components. In the deployment of pearl ink, pearlescent pigment passive light flash effect is that the light conditions in order to show its flash effect. To take full advantage of this feature pearlescent material flutter, in the selection of Pearlescent Pigments inks, pay attention to grasp the following three relationships: PVC lubricant
Extravagant piece pearl diameter size and material relationship between the flash effect used in packaging printing pearlescent pigments are flaky, usually slice Trail walking distance between the flash source is also large, the flash effect will be scattered; Conversely, tablets diameter is small, the flash source spacing is small, the flash effect on the concentration of
Diameter of the pearlescent pigment chip size and the relationship between the intensity of the flash pearl pigment sheet larger diameter, the surface of the light by the multiple reflection, refraction more chance, the stronger the intensity of the flash; the contrary, the weak intensity of the flash
Pearlescent pigment flakes diameter size and cohesion resistance and the compound of the suspension link between settling. Special light PVC plasticizer is usually smaller chip size, the easier cohesion, the aspect ratio of the smaller particles, resulting in the compound also prone to subsidence link, or easily in suspension.
In order to make the pigment compound evenly on the link #-O-, must master the three based on the relationship. The density of material according to the link select the appropriate size and aspect ratio sheet pearlescent pigment ink formulation, a thickening agent can also be added to prevent the deposition of pearlescent pigments; or pre-wetting the pearlescent pigment dispersed in the link and then compound , which also could have been avoided particles agglomerate agglomerate ills of settlement