Stabilizer introduced in the benzene ring is a new attempt. Improve the
relative molecular mass of organic tin stabilizer , but also a new
research trends. Main ways : organic tin stabilizer own high molecular
weight , the formation of polymeric organic tin ; unsaturated organic tin
compounds with the appropriate monomers to improve its relative molecular
mass ; middle with bifunctional compounds and organotin organotin body
molecules to form a molecule containing a plurality of tin atoms to
improve their relative molecular mass and the like. Avoid small relative
molecular mass and volatile due to become odorless "clean " type organotin
stabilizers . Their constituents , except barium soap , zinc soap , there
phosphites and coloring preventing agent. The new high performance
phosphite emerging, prompted the rapid development WSD PVC flame retardant of such stabilizers .
Especially in recent years β- diketones as preventing the use of initial
coloring agent to make the performance of barium zinc stabilizer class
more perfect. The main advantages : superior weatherability barium -
cadmium stabilizers; improved cold can reduce the amount of phosphate type
auxiliary plasticizer .
Barium zinc stabilizer is mainly used for rolling and plasticized PVC
plastisol processing , but also from the product into powder and liquid
form . Can be compared with liquid barium cadmium stabilizers thermal
stability of liquid barium zinc stabilizer compatibility with commonly
used plasticizer in PVC as well as a stable and WSD zinc stearate transparent terms . Also
recently appeared on the market a new barium zinc products , the product
tasteless, non fouling phenomena in the processing of the plasticized PVC
, and exhibits excellent self- lubricating effect . Barium zinc stabilizer
slightly inferior in light stability , can be compensated with an epoxy
plasticizer and an ultraviolet absorber. Also WSD Polyethylene wax barium metal, although a
very small solubility in water , but if access to the gastrointestinal
tract , the stomach acid to increase its solubility, greater toxicity, and
therefore is limited in recent years in many applications.
impact modifier
2014年2月24日星期一
2014年2月17日星期一
Some simple exposition Heat stabilizer for
Environmental problems due to the toxicity of lead and, in the most common case of a zinc, barium and calcium-zinc stabilizers are quickly replaced by a more efficient formulation of barium-lead. Lead systems can be provided close to the processing stability of the novel stabilizer is continuously developed in order to achieve lead-free stabilizer. This occurs due to government regulations and the high cost of waste disposal.
A combination of zinc and secondary phosphite stabilizer components with food grade calcium in the food packaging film has been applied aspects.
Most plasticizers used in soft products, the plasticizer-containing epoxy esters, such as diglycidyl ester, epoxy fatty acid ester. Reacting the epoxide with hydrogen chloride as an auxiliary stabilizer.
Because of the unique electrical properties of the lead compound, in the wire and cable coating dominate the market, some of the metal in the coating mix applied as an auxiliary stabilizer.
Hard products: rigid PVC products in the North American market, although there are some wrong, mixed metal, antimony esters using flow-based, but most are using stabilizers containing tin. In other parts of the world, especially when used as a profile, is gradually replacing lead stabilizers barium a stabilizer, which is due to the problems discussed above pan. However, due to the potential environmental factors in these applications CKS gradually calcium-zinc and organic tin instead of lead.
Pipe: PVC rigid PVC pipe is unique to the largest market, the majority of the pipe is in the twin-screw extruder processing. Since the heating time is short, and therefore the use of lower concentrations of organotin stabilizers stream. These pipe grade tin content of the stabilizer may use to 4-10% less, per 100 parts of the polymer is generally 0.4 parts (twin screw extrusion), while the single screw extruder 0.6-1 .0 copies. Stabilizer for drinking water pipes must comply with the requirements of independent certification bodies.
Injection: With the emergence reciprocating screw injection molding resins suitable for the requirements, and has successfully developed a highly efficient stabilizers and obtained a very large WSD Chrolinated polyethylene part (35 pounds).
While the lower molecular weight resin is more easily processed, but the high shear injection mold typically require a 25% containing 14% tin organotin ester stream.
Blow molding: the proper selection of the organic tin blow molding is critical because there is a starting color, fragrance, transparency additional requirements play a decisive role in the generic article are sulfuric acid ester and dibutyltin tin methyl ester. Although the methyl esters of tin and tin have FDA permission, but the main use of food-grade applications octyl tin.
Membrane and sheet: extrusion and calendering are used to process rigid PVC sheet and membrane, the membrane and the WSD Titanium dioxide rutile sheet is typically used as stabilizers for use with bottles.
Siding and outer profiles: For stabilizers for PVC siding and window frame materials, weather resistance and durability to maintain color of the additional requirements. Long term studies have determined the structure of these organotin optimal use.
In North America, the single / double sulfates are present preferred organotin stabilizers have been traditionally used in the European metal mixture also increases its appeal.
In North America, the high amount of titania used WSD Aluminum hydroxide well to prevent ultraviolet. This fact coupled with higher productivity are required to provide more organotin excellent processing stability.
A combination of zinc and secondary phosphite stabilizer components with food grade calcium in the food packaging film has been applied aspects.
Most plasticizers used in soft products, the plasticizer-containing epoxy esters, such as diglycidyl ester, epoxy fatty acid ester. Reacting the epoxide with hydrogen chloride as an auxiliary stabilizer.
Because of the unique electrical properties of the lead compound, in the wire and cable coating dominate the market, some of the metal in the coating mix applied as an auxiliary stabilizer.
Hard products: rigid PVC products in the North American market, although there are some wrong, mixed metal, antimony esters using flow-based, but most are using stabilizers containing tin. In other parts of the world, especially when used as a profile, is gradually replacing lead stabilizers barium a stabilizer, which is due to the problems discussed above pan. However, due to the potential environmental factors in these applications CKS gradually calcium-zinc and organic tin instead of lead.
Pipe: PVC rigid PVC pipe is unique to the largest market, the majority of the pipe is in the twin-screw extruder processing. Since the heating time is short, and therefore the use of lower concentrations of organotin stabilizers stream. These pipe grade tin content of the stabilizer may use to 4-10% less, per 100 parts of the polymer is generally 0.4 parts (twin screw extrusion), while the single screw extruder 0.6-1 .0 copies. Stabilizer for drinking water pipes must comply with the requirements of independent certification bodies.
Injection: With the emergence reciprocating screw injection molding resins suitable for the requirements, and has successfully developed a highly efficient stabilizers and obtained a very large WSD Chrolinated polyethylene part (35 pounds).
While the lower molecular weight resin is more easily processed, but the high shear injection mold typically require a 25% containing 14% tin organotin ester stream.
Blow molding: the proper selection of the organic tin blow molding is critical because there is a starting color, fragrance, transparency additional requirements play a decisive role in the generic article are sulfuric acid ester and dibutyltin tin methyl ester. Although the methyl esters of tin and tin have FDA permission, but the main use of food-grade applications octyl tin.
Membrane and sheet: extrusion and calendering are used to process rigid PVC sheet and membrane, the membrane and the WSD Titanium dioxide rutile sheet is typically used as stabilizers for use with bottles.
Siding and outer profiles: For stabilizers for PVC siding and window frame materials, weather resistance and durability to maintain color of the additional requirements. Long term studies have determined the structure of these organotin optimal use.
In North America, the single / double sulfates are present preferred organotin stabilizers have been traditionally used in the European metal mixture also increases its appeal.
In North America, the high amount of titania used WSD Aluminum hydroxide well to prevent ultraviolet. This fact coupled with higher productivity are required to provide more organotin excellent processing stability.
2014年2月10日星期一
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.
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.
2014年2月9日星期日
Some of the major purposes of Heat stabilizer
1, Ca-Zn composite heat stabilizer non-toxic, non-harmful heavy metals, can replace traditional lead salt heat stabilizer, safety and health, conducive to environmental protection;
2, has excellent thermal stability and excellent weather resistance, good initial color, light, anti-sulfide contamination, can WSD Metallic stearate significantly improve the outdoor use of PVC products;
3, calcium, zinc and PVC heat stabilizer dispersion, compatibility, anti-precipitated, forming a good processing stability, has a wide processing characteristics can be improved extrusion speed and extend the production cycle;
4, has a unique role in coupling, giving a good filler dispersion, promote and package resin, improve product performance, both toughened and promote melting, can significantly improve the mechanical properties of PVC products, enhanced products compressive blasting Performance. 1) Heat stabilizer salt: salt stabilizer is the combination of the "base" of lead salts of inorganic and 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%. 2) a fatty acid-based heat stabilizer: Such a thermal stabilizer is a compound consisting of a fatty acid with a metal ion root, also known as hot metal soap stabilizers, its performance and the kind of metal ions and acid WSD chromium oxide radicals, generally in an amount of 0.1% ~ 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. Ca-Zn composite heat stabilizer in an efficient, high environmental protection is known, no smell, dispersion, mobility, stability, weather resistance, excellent transparency. At present, both plates, areas of production and processing profiles or plastics, composite stabilizer have become integral. When adding calcium zinc composite heat stabilizer, you first need to consider compatibility with the polymer is added between. If you add a composite stabilizer and polymer compounds produce a certain reaction, eroding the additive effect but will be counterproductive. Compatibility between various plastics additives is also important, not simply add a stabilizer during plastic processing, will add time to pay attention to the role of auxiliaries and additives occur between each other. Different plastics composite stabilizer for added performance, odor, stability, thermal properties and other characteristics different WSD Polyethylene wax requirements, in operation to do to analyze specific issues, select the appropriate composite stabilizer. Also note that when you add another calcium zinc composite heat stabilizer moderation, too much or too little will not achieve the intended stabilizing effect.
2, has excellent thermal stability and excellent weather resistance, good initial color, light, anti-sulfide contamination, can WSD Metallic stearate significantly improve the outdoor use of PVC products;
3, calcium, zinc and PVC heat stabilizer dispersion, compatibility, anti-precipitated, forming a good processing stability, has a wide processing characteristics can be improved extrusion speed and extend the production cycle;
4, has a unique role in coupling, giving a good filler dispersion, promote and package resin, improve product performance, both toughened and promote melting, can significantly improve the mechanical properties of PVC products, enhanced products compressive blasting Performance. 1) Heat stabilizer salt: salt stabilizer is the combination of the "base" of lead salts of inorganic and 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%. 2) a fatty acid-based heat stabilizer: Such a thermal stabilizer is a compound consisting of a fatty acid with a metal ion root, also known as hot metal soap stabilizers, its performance and the kind of metal ions and acid WSD chromium oxide radicals, generally in an amount of 0.1% ~ 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. Ca-Zn composite heat stabilizer in an efficient, high environmental protection is known, no smell, dispersion, mobility, stability, weather resistance, excellent transparency. At present, both plates, areas of production and processing profiles or plastics, composite stabilizer have become integral. When adding calcium zinc composite heat stabilizer, you first need to consider compatibility with the polymer is added between. If you add a composite stabilizer and polymer compounds produce a certain reaction, eroding the additive effect but will be counterproductive. Compatibility between various plastics additives is also important, not simply add a stabilizer during plastic processing, will add time to pay attention to the role of auxiliaries and additives occur between each other. Different plastics composite stabilizer for added performance, odor, stability, thermal properties and other characteristics different WSD Polyethylene wax requirements, in operation to do to analyze specific issues, select the appropriate composite stabilizer. Also note that when you add another calcium zinc composite heat stabilizer moderation, too much or too little will not achieve the intended stabilizing effect.
订阅：
博文 (Atom)