PVC heat stabilizers KF-101 Scope and recommended dosage

PVC heat stabilizers KF-101 Scope and Recommended dosage:
High thermal stability, and has excellent light stability and weathering resistance:
PVC heat stabilizer has a unique role in one pack stabilizer coupling, giving a good filler dispersion, promotion and resin package, improve product performance, reduces mechanical wear and prolong equipment life.
PVC heat stabilizers both toughened and promote melting, plasticizing fluidity.
Recommended dosage: KF-101 recommended dosage is 5-8 parts
Packing: 25KG bags peritoneum
PVC heat stabilizers Storage: Store at room temperature in a dry case, fasten sealed after use.
(1) PVC heat stabilizers various components can be obtained in the course of its abundant production mix, mixed with the  intenal lubricant resin substantially improved the uniformity of slack.
(2) PVC heat stabilizer formulation are mixed, the simplified measurement of frequency, to reduce the measurement error caused by the probability of the loss and the resulting.
(3) PVC heat stabilizers simple supply and reserves of the excipients, is conducive to production, quality management.
(4) provides a possibility of dust  PVC lubricant produced product, improved production conditions.

wetting dispersing aids application

 Application of wetting dispersing aids
The base of the pigment in the paint wetting and dispersing is an important process in the manufacture of paints, paint wetting dispersing additives on the quality of a great movie
Rang. Wet grinding and dispersion of dispersing agents can shorten the time and reduce energy consumption, to ensure a steady state dispersion coating, the coating of the many performance plays a decisive role.
Pigment dispersion is a group of the  aluminium distearate secondary particles and agglomerates of aggregates broken into finer abrasive particles or primary particle size, it
Become a stable dispersion suspension. Yan moist grain: It is the process of changing the surface properties of the pigment, the pigment surface remove adsorbed water and air, to change its polarity, lower liquid / solid interface between the tension and increase the affinity for pigments and paints. Humectant is in the role of this phase additives. Wetting agent is to improve the effectiveness of the pigment dispersing surfactant wetting agent. It
Pigment surface has a strong affinity. Orientation can be adsorbed on the surface of the pigment, pigment surface adsorbate substituted: water and air. Enhance the affinity of paints and pigments, pigment in paints shorten grinding dispersion time. Because the pigment surface run process is actually a replacement project pigment wetting agent should be and therefore has a strong affinity for the pigment. The dispersion process, formed by mechanical grinding paint pigment fine particles and form a uniform suspension, the external force, to maintain a stable dispersion state is usually referred to as dispersed phase, also known as stabilization phase, the dispersant is at this stage play The additive effect. Dispersing agent is able to maintain a stable dispersion coating to improve the surface-active substances. Adding a dispersing agent in the coating can be pulverized into fine particles adsorbed on the pigment surface, constituting an adsorption layer, the charge-generating steric repulsion effect of the air to prevent re-dispersed pigment particles form harmful flocculation, can be maintained in a stable suspension system state. Dispersant of general
Large child, and can form a thick adsorption layer. Dispersant if used properly, can not only prevent pigment settling, the paint has
Good storage stability, but also to improve leveling, prevent pigment blurs to obtain a uniform color coating to improve
Coloring pigment strength, opacity, gloss increase the  film, but also reduce the viscosity of the paste, increase the  liquid stabilizer pigment grind paste
Content, improve grinding efficiency and achieve savings in manpower and energy effects.
1, a wetting dispersant, additive manufacturers have introduced general, but adding the scope and amount of the coating should be based on
Species and required to make specific decisions. To do this, we must first understand the characteristics of the resin used, and secondly to grasp the characteristics of the pigment surface, in particular acid resistance, specific surface area of ​​the size, shape, etc., to set the added amount, generally higher than the amount of surface area a little more, a small is less. If insufficient amount, the pigment surface spare too many points, could easily lead to flocculation, be counterproductive. Such as: the specific surface area is small, the amount of excess, the formation of micelles in the paint, it will affect the water resistance of the coating. So be sure to use suitable screening test must be repeated. 2, a wetting agent added dispersing procedure: pigment wetting dispersant is generally added when the ingredients to make the grinding and dispersion of the pigment surface adsorption, to achieve the desired purpose. If the compound used in the non-polar hard dispersed pigment, preferably blended in a small amount first additive resin solution and then mixed with the pigment soaked, so that the application would be more effective.
Dispersing pigment in the paint pigment in the dispersion process is more complicated, but at least through three processes, namely wet depolymerization (dispersion) and stabilized.
Providing paint pigment production, the vegetable stearic acid   production of the pigment particles formed are subtle, and its particle size is generally in between 5nm to 1um, the dispersion system can be formed easily.
But the paint pigment plant put into production, mostly in the original-sized particles, agglomerates and aggregates mixtures exist. Primary-particle: a pigment formed in the manufacturing process of associating a single crystal or crystals is relatively fine grain size. Agglomerates: the original sized particles connected edges and corners, a combination of the structure is relatively loose, large particle group. Aggregates: a primary-particle combination of two-sided, or the growing crystal surface together, the structure is compact, large particle group.
Most of the pigment agglomerates of Lu cake drying and subsequent formation of a dry mill.
Aggregates of pigment manufacturing process precipitate formed during the curing. Agglomerates and aggregates secondary particles as pigments together. 1, pigment wetting:
Production of the pigment used in paints are generally adsorbed surface layer of air and water, the voids between the particles are filled by air, dispersing the pigment in the paint the most important prerequisite is the need to use paints instead of air and moisture, and exposure of the pigment the formation of a new layer on the surface of coated film, which instead of air and moisture with the paints and coating film formed on the surface of the pigment in the process, referred to as pigment wetting process. 2, the pigment depolymerization (dispersion): In the dispersion process, only the surface of the secondary particles is not enough to wet paints, because such a large size, small surface
Group product of pigment particles can not meet the requirements and maintain a film forming paint liquid paint a stable dispersion state.
Must therefore be subjected to external mechanical forces (shear forces primarily) deaggregation these large particles, to restore back to the original level at or near the particle size to small particles form a large surface area exposed to the paint and so that all surfaces are exposed by wet paints. This means the applied mechanical force, the pigment agglomerates and aggregates restored or nearly restored to the original level of particles or depolymerization process called dispersion process called. Pigment in the paint in the paint manufacturing process depolymerization is the main, the most energy consuming processes. Depolymerization can paint the outer
To mechanical force, usually by grinding and dispersion we normally use equipment, such as a sand mill, ball mill, three-roll machine, high speed disperser and two roll machine generated. As a dispersion medium in order to create a liquid vehicle for the pigment (filling) material particles penetrate the surface of the conditions necessary to color (fill) material aggregates and agglomerates can be applied to promote its breakdown external mechanical force, the color (fill) depolymerization material particles, it is better to paint the wetting liquid, which requires grinding and dispersion equipment. Paint the polishing slurry, the pigment particles depolymerization process, not only can be sufficiently liquid so that wet paint color (fill) material particle surface to improve the stability of the millbase, and with a higher level of pigment dispersion, coloring pigments, cover will be a corresponding increase in strength, gloss and other paint film performance is also improved. So the selection of an efficient grinding and dispersion device, can greatly improve the dispersion of pigment in the paint level, thereby improving the millbase while reducing the amount of pigment stability, improve the quality of paint and coatings. 3, the stabilization: depolymerization has been wetted pigment particles distributed to a large number of paints continue to go, so there is enough paint coated on the periphery of pigment particles, and isolated from one another, thereby reducing the pigment particles attraction between avoid the phase between the pigment particles
Contact with each other, such that each has to be gathered and the solution of the pigment particles are moistened sufficiently thick, continuous, non-volatile dispersion of film-forming material is permanently open, the dispersion in the absence of the control of the applied mechanical force, pigment particles does not occur again coalesce into large particles in the process, called the stabilization process, the stability of the pigment dispersion obtained, the ultimate goal is the production of paint. Thus, the dispersion of pigment in the paint is wet, and stabilization depolymerization process three major components.
But, in fact, these three processes are not completely separate, but simultaneous and alternating conducted. For dispersing the pigment in the paint dispersion is formed, the relationship between the three: a wet basis, in order to more fully depolymerization wetting, and to achieve steady state of the ultimate goal.
If the pigment is dispersed in the paint well, to reach a relatively stable state, then had been dispersed pigment particles likely will re-close and gathered into large particles, forming what we call a pigment floc flocculation of pigments is distributed among the inverse process. Floc pigments and aggregates and agglomerates, although the original-sized particles made of large particle coalescence particle group, but the floc and the latter are essentially different, although it still paints the surface of the package cover, paint particles have been filled the gap, the pigment aggregates and agglomerates the surface of the cladding is air and water, the gap is filled by air, but the micro-flocculation state, in the production of coatings as well as its the use of the Department.

hard polyvinyl chloride (UPVC) injection molding process

UPVC known as hard PVC, vinyl chloride monomer which is formed by the polymerization reaction of amorphous thermoplastic resin and certain additives (such as stabilizers, lubricants, fillers, etc.). pvc called hard pvc, vinyl chloride monomer which is prepared by polymerization of
The amorphous thermoplastic resin and certain additives (such as stabilizers, lubricants, fillers, etc.). In addition to the additive, but also other resins used for blending with the modified approach
upvc called hard pvc, vinyl chloride monomer which is formed by the polymerization reaction of amorphous thermoplastic resin and a certain additive (
Such as stabilizers, lubricants, fillers, etc.).
In addition to the additive, but also other resins used for blending with the modified approach, it has obvious practical value. These resins are cpvc, pe, abs, eva, mbs like.
upvc high melt viscosity, poor mobility, even when the injection pressure and melt temperature fluidity will not change much. In addition, the resin molding temperature and thermal decomposition temperature are very close to the temperature for forming a very narrow range, is a hard molded material.
1, plastic processing
After 24 hours at room temperature, water less than 0.02%, and therefore without drying. If must be dry, can be placed in 60-70 ℃ hot air oven for 3 hours or 80 ℃ 1-1.5 hours in a dryer.
Up to 20% recycled material and new material mixed, the amount of recycled material depends on the end use of the product. Abuse of recycled material injection can fail, not only the plastic processing aid  composition of recovered much more is due to the material after repeated re-processing. Every once more recycled material decline in the quality recycling more.
2, injection molding machine selection
upvc Since the melt viscosity, easy to decompose, decomposition products have a corrosive effect on iron, which must be dedicated to the plastics injection molding components and temperature control system.
Ramada products covered in each of the  organic pigments clamping force model, has specialized upvc plastics injection system, and with upvc pipe fittings Pulling requirements with a dedicated security gate devices. Under normal circumstances as long as the injection volume to meet the weight requirements, the choice of this series of injection molding device can be molded upvc high-quality products.
3, mold and gate design
Mold temperature can be set to 40 ℃. Flow channel length should be short, will have a large diameter to reduce the pressure loss and the holding pressure can be passed into the mold cavity. Gate as short as possible, cutting surface to be circular, the diameter of the smallest nozzle orifice 6mm,, into a conical angles to 5 °.
Sprue cutting surfaces have circular, with a combination of cold slug well by connecting section sprue and gate radius, diameter of 7mm.
Gate application tangentially connecting radius of the surface shape plastic parts, the shorter the better, cutting surface to be smooth.
Cold slug well to prevent semi-solidified material into the mold cavity, its importance is often overlooked.
Position of the gate to the right, so that the material in the stream flowing smoothly trail, will not stay in sharp corners, debris and metal traces in order to avoid compression or decompression situation, should maintain smooth flow smoothly.
Application of stainless steel casting mold, chromium content of at least 13%, preferably 16%, at least 55 Rockwell hardness, hard chrome-plated steel mold can be processed to form a protective effect.
After production, the application of a mild lye carefully cleaned and then sprayed mold surface quality oil spray or siliceous spray.
4, the melt temperature
Measure of available air-launched by 185-205 ℃ range. Smoothness of the material from the injection can know the  heat stabilizer for shoes exact upvc melt temperature. If the material in the injection after the rough, as evidenced by the material is not homogeneous (plastics insufficient), which means that the temperature set too low; eg, injection newcomer bubble and smoke a lot of smoke, it means the temperature is too high.
5, the injection speed
Slower rate of fire, or cause excessive shear degradation of materials, the use of upvc produce extremely smooth, thick-walled products should be used multi-stage injection mold filling speed.
6, the screw speed
Should match the  molding cycle may be. Screw face velocity shall not exceed 0.15-0.2m / s
7, the back pressure
Up to 150bar, the lower the better, common to 5bar.
8, the retention time
At a temperature of 200 ℃, barrel residence time can not exceed five minutes. When the temperature is 210 ℃, cylinder residence time should not exceed 3 minutes.

No water of zinc borate

Anhydrous zinc borate of the formula 2ZnO.3B2O3..
Molecular weight of 371.68. Included (ZnO) is greater than 46%, containing (B2O3) is greater than 52%, purity 99.5%.
White fine powder, insoluble in water and organic solvents, is non-toxic,zinc borate flame retardant tasteless, non-corrosive and irritating inorganic flame retardants, both flame retardant, but also smoke, eliminate arcing.
Product specific surface area is small, there is gloss, strong distribution rate. Widely used in white pigments, pharmaceuticals, plastics, rubber, building materials, wood, paper, cables, wires, defense industry products, paint (in the paint with rust, mildew, bacteria, corrosion, pollution prevention, anti-

Powder, to prevent discoloration, fire and other effects), tarpaulins, textile fabrics flame retardant, waterproof fabric, ceramics glaze, paint mildew, mildew, fungicides various flame retardant products .

Low-hydrated zinc borate

Case of non-combustible plastic flame. Its flame retardant commonly used to measure oxygen index: oxygen index of 22 or less flammable plastics, unimpeded ... two types of inorganic and organic flame retardants, inorganic flame retardants are antimony trioxide, hydrated alumina, zinc borate; The organic flame retardant mainly

Halogenated hydrocarbons such as zinc borate flame retardant chlorinated paraffin, chlorinated polyethylene, six bromobenzene. Halogenated hydrocarbon combustion hydrogen chloride

New Flame Retardant Low synthetic hydrated zinc borate

Zinc borate in industry are mainly three kinds of synthetic routes:
① zinc hydroxide - boric acid method, this method produced a single, high production costs;
② zinc oxide - borate method, this process is simple, single product, suitable for small batch production;
③ zinc - borax method, using borax and inexpensive zinc, lower cost [1]. This test uses a zinc salt - the production of zinc borate borax.
Synthesis method:
1 Experimental Drugs and Drug instrument: zinc nitrate hexahydrate, borax decahydrate, zinc oxide, mannitol were of analytical grade. Instrument: three flasks, electric stirring device, thermostatic water bath, circulating water pumps, oven, thermometer, pH value tester
Two experimental principle zinc nitrate and borax by the metathesis reaction of zinc borate flame retardant reaction equation can be expressed as: 3.5 Zn (NO3) 2 +3 · 5Na2B4O7 +0 · 5ZnO +10 H2O 2 (2ZnO · 3B2O3 · 3.5 H2O) +2 H3BO3 + 7NaNO3 main factors affecting product composition had an anti-

Should be temperature, reactant ratio of liquid to solid ratio and reaction time. Studied the influence of these factors on the product, so as to determine the optimum process conditions.
3 product specifications and test methods to quantify Zn (NO3) 2.6 H2O dissolved in quantitative water bath temperature when the temperature rose to a certain

Ultra low-hydrated zinc borate liquor preparation and treatment methods of the new technology research
Pingluoba four wells Deep Marine potassium-rich boron brine rich in potassium, boron, bromine, iodine and other resources, the world has discovered the first case of large multi-element boron liquid potassium-rich mineral resources treasure. Comprehensive utilization of mineral resources to carry out this study, some of the resources for alleviating the current shortage of cash

Shaped and sustainable development of great significance. However, in brine resource development on the basis of how to do high-quality primary products, to achieve a higher level of resource utilization, is currently facing a variety of mineral resources development of common problems, Qionglai deep underground brine

The same is true of water resources development. The research to QIONGLAI potash fertilizer Ltd. borax decahydrate primary products as raw materials, through a process different from the previous synthetic route to prepare high-quality low-hydrated zinc borate products, so that the company's value-added primary products increased boron

Plus more than 5 times. zinc borate flame retardant is an inorganic flame retardants, which are widely used in plastics, rubber, chemicals, building materials, paints and other organic polymer composite materials and other industries. Currently, many of the synthesis of zinc borate metathesis method is the synthesis of low-hydrated zinc borate

Main process method, since 2335 in the synthesis of zinc borate (2ZnO · 3B2O3 · 3.5H2O) boric acid in the reaction system is a polyhydric weak, there is a variety of forms, may be formed at least seven different crystalline zinc borate product.