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Industrial plastic composite antioxidant
2018-1-15 12:08:50
Industrial plastic composite antioxidant
Industrial plastic compound antioxidant is composed of two or more antioxidant agents, which produce synergistic effect and perform superior performance. With general resin of high functional plastic industry, high added value, and the scope of application of expansion, composite materials and engineering plastics for industrial plastic composite antioxidants have high efficiency, low toxicity and good compatibility, no precipitation, etc performance.
Industrial plastic composite antioxidant high antioxidant activity, low volatile, especially suitable for high temperature processing, is a good plastic stabilizer, antioxidant and degradation to join a small amount of composite antioxidants that can effectively stop the plastic degradation, represents the latest level in today's oxidation technology.
Plastic is a monomer as raw material, through the addition polymerization and polycondensation reaction of polymerization of polymer compounds (macromolecules), commonly known as plastic (plastics) or resin (resin), free to change the style, composition and form consists of synthetic resin and packing, plasticizer, stabilizer, lubricant, ink additive composition and so on.
The main component of plastic is resin. The term resin is originally derived from the lipids secreted by plants and animals, such as rosin, shellac, etc. Resin refers to the high molecular compound that has not been mixed with various additives. Resin accounts for 40% ~ 100% of the total weight of plastic. The basic properties of plastics are mainly determined by the nature of resins, but additives also play an important role. Some plastics are basically made up of synthetic resins, without or without additives, such as organic glass and polystyrene.
Plastic, in fact, is one of the synthetic resins, similar to those found in natural resins, which are chemically synthesized and called plastic.
Plastic material is defined as a synthetic or natural macromolecular compound that can be arbitrarily shaped into a material or a plastic material that can last in shape.
Most plastics are light, chemical stable, and do not rust; Good impact resistance; Good transparency and wear resistance; Good insulation, low thermal conductivity; General molding, good coloring, low processing cost; Most plastics have poor heat resistance, high thermal expansion rate and easy to burn; Poor dimensional stability and easy deformation; Most plastics have low temperature resistance, brittle at low temperature and easy to age. Some plastics are soluble in solvents.
Triphenyl phosphite (antioxidant, stabilizer TPPi) production process
1. Phosphorus oxychloride as the direct method (also called thermal method) phenol with pyridine and anhydrous benzene as solvent, in no more than 10 ℃ temperature, slowly add oxygen phosphorus chloride, then under reflux temperature, the reaction of 3 ~ 4 h. After cooling to room temperature, the reactants are washed by water to recycle pyridine. After centrifugal dehydration, the reagents are dehydrated with dried sodium sulfate, which is filtered to remove sodium sulfate. The first atmospheric distillation recovery of benzene, vacuum distillation, collected 243 ~ 245 ℃ (1.47 kPa) fraction, by cooling, crystallization, crushing is the finished product.
2. After phenol melting, stirring under add phosphorus trichloride under 25 ℃, Triphenyl phosphite is generated; Then heat up to 70 ℃ ventilation with chlorine gas, generated two chlorinated triphenyl phosphate; Again at 50 ℃ water hydrolysis, triphenyl phosphate. The hydrolysate with 5% soda solution for neutralization, water washing, the evaporation and vacuum distillation, collected 243 ~ 245 ℃ (1.47 kPa) fractions, cooling, crystallization, crushing, packaging is the finished product.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Plastic can be distinguished between thermosetting and thermoplastic type, the former cannot be reshaped, and the latter can be produced again. The physical elongation of thermal plasticity is large, usually between 50% and 500%. The force is not completely linear at different elongation rates.
The different properties of plastic determine its use in industry. With the improvement of technology, the research on plastic modification has not been stopped. It is hoped that in the near future, plastics will be more widely used in the future, and may even replace steel and other materials and no longer pollute the environment.
There are two basic types: the first is the linear structure, and the polymer compound with this structure is called linear polymer; The second type is the structure of the body, which is called the body polymer. Some polymers have branched chains, known as branched polymers, which belong to the linear structure. Some polymers, even though they have crosslinks between molecules, have fewer crosslinks, called reticular structures, and are in the shape of their bodies.
Two different structures show two opposite properties. Linear structure, heating can melt, hardness and brittleness less characteristic. Hardness and brittleness of body type. Plastic is a polymer of two kinds of structure, made of linear polymer is thermoplastic, made of body type polymer is thermoset plastic.
Properties of plastics: chemical resistance; Glossy, partially transparent or translucent; Most of them are good insulators; Light weight and firm; Processing is easy to mass production, the price is cheap; Versatility, utility, easy coloring, high temperature resistance.
Most plastics have strong resistance to corrosion, and do not react with acid or alkali. Plastic manufacturing costs are low. Durable, waterproof, lightweight. Easily molded into different shapes. It's a good insulator. Plastics can be used to make fuel oil and fuel gas, which can reduce oil consumption.
Synthetic resin is the main component of plastic, and its content in plastic is generally 40% ~ 100%. Because of the high content, and the properties of the resin often determine the properties of plastics, resin is often regarded as a synonym for plastics. For example, polyvinyl chloride resin is confused with polyvinyl chloride, phenolic resin and phenolic plastics. In fact, resin and plastic are two different concepts. Resin is an unprocessed raw macromolecular compound that is used not only for making plastics but also for coatings, adhesives and synthetic fibres. Plastic, except for a very small percentage of 100% resin, most of the plastic, besides the main component resin, also needs to add other substances.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Industrial plastic compound antioxidant is composed of two or more antioxidant agents, which produce synergistic effect and perform superior performance. With general resin of high functional plastic industry, high added value, and the scope of application of expansion, composite materials and engineering plastics for industrial plastic composite antioxidants have high efficiency, low toxicity and good compatibility, no precipitation, etc performance.
Industrial plastic composite antioxidant high antioxidant activity, low volatile, especially suitable for high temperature processing, is a good plastic stabilizer, antioxidant and degradation to join a small amount of composite antioxidants that can effectively stop the plastic degradation, represents the latest level in today's oxidation technology.
Plastic is a monomer as raw material, through the addition polymerization and polycondensation reaction of polymerization of polymer compounds (macromolecules), commonly known as plastic (plastics) or resin (resin), free to change the style, composition and form consists of synthetic resin and packing, plasticizer, stabilizer, lubricant, ink additive composition and so on.
The main component of plastic is resin. The term resin is originally derived from the lipids secreted by plants and animals, such as rosin, shellac, etc. Resin refers to the high molecular compound that has not been mixed with various additives. Resin accounts for 40% ~ 100% of the total weight of plastic. The basic properties of plastics are mainly determined by the nature of resins, but additives also play an important role. Some plastics are basically made up of synthetic resins, without or without additives, such as organic glass and polystyrene.
Plastic, in fact, is one of the synthetic resins, similar to those found in natural resins, which are chemically synthesized and called plastic.
Plastic material is defined as a synthetic or natural macromolecular compound that can be arbitrarily shaped into a material or a plastic material that can last in shape.
Most plastics are light, chemical stable, and do not rust; Good impact resistance; Good transparency and wear resistance; Good insulation, low thermal conductivity; General molding, good coloring, low processing cost; Most plastics have poor heat resistance, high thermal expansion rate and easy to burn; Poor dimensional stability and easy deformation; Most plastics have low temperature resistance, brittle at low temperature and easy to age. Some plastics are soluble in solvents.
Triphenyl phosphite (antioxidant, stabilizer TPPi) production process
1. Phosphorus oxychloride as the direct method (also called thermal method) phenol with pyridine and anhydrous benzene as solvent, in no more than 10 ℃ temperature, slowly add oxygen phosphorus chloride, then under reflux temperature, the reaction of 3 ~ 4 h. After cooling to room temperature, the reactants are washed by water to recycle pyridine. After centrifugal dehydration, the reagents are dehydrated with dried sodium sulfate, which is filtered to remove sodium sulfate. The first atmospheric distillation recovery of benzene, vacuum distillation, collected 243 ~ 245 ℃ (1.47 kPa) fraction, by cooling, crystallization, crushing is the finished product.
2. After phenol melting, stirring under add phosphorus trichloride under 25 ℃, Triphenyl phosphite is generated; Then heat up to 70 ℃ ventilation with chlorine gas, generated two chlorinated triphenyl phosphate; Again at 50 ℃ water hydrolysis, triphenyl phosphate. The hydrolysate with 5% soda solution for neutralization, water washing, the evaporation and vacuum distillation, collected 243 ~ 245 ℃ (1.47 kPa) fractions, cooling, crystallization, crushing, packaging is the finished product.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Plastic can be distinguished between thermosetting and thermoplastic type, the former cannot be reshaped, and the latter can be produced again. The physical elongation of thermal plasticity is large, usually between 50% and 500%. The force is not completely linear at different elongation rates.
The different properties of plastic determine its use in industry. With the improvement of technology, the research on plastic modification has not been stopped. It is hoped that in the near future, plastics will be more widely used in the future, and may even replace steel and other materials and no longer pollute the environment.
There are two basic types: the first is the linear structure, and the polymer compound with this structure is called linear polymer; The second type is the structure of the body, which is called the body polymer. Some polymers have branched chains, known as branched polymers, which belong to the linear structure. Some polymers, even though they have crosslinks between molecules, have fewer crosslinks, called reticular structures, and are in the shape of their bodies.
Two different structures show two opposite properties. Linear structure, heating can melt, hardness and brittleness less characteristic. Hardness and brittleness of body type. Plastic is a polymer of two kinds of structure, made of linear polymer is thermoplastic, made of body type polymer is thermoset plastic.
Properties of plastics: chemical resistance; Glossy, partially transparent or translucent; Most of them are good insulators; Light weight and firm; Processing is easy to mass production, the price is cheap; Versatility, utility, easy coloring, high temperature resistance.
Most plastics have strong resistance to corrosion, and do not react with acid or alkali. Plastic manufacturing costs are low. Durable, waterproof, lightweight. Easily molded into different shapes. It's a good insulator. Plastics can be used to make fuel oil and fuel gas, which can reduce oil consumption.
Synthetic resin is the main component of plastic, and its content in plastic is generally 40% ~ 100%. Because of the high content, and the properties of the resin often determine the properties of plastics, resin is often regarded as a synonym for plastics. For example, polyvinyl chloride resin is confused with polyvinyl chloride, phenolic resin and phenolic plastics. In fact, resin and plastic are two different concepts. Resin is an unprocessed raw macromolecular compound that is used not only for making plastics but also for coatings, adhesives and synthetic fibres. Plastic, except for a very small percentage of 100% resin, most of the plastic, besides the main component resin, also needs to add other substances.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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