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Plastic antioxidant
2017-12-31 18:59:50
Plastic antioxidant
Antioxidants are the most widely used additives in plastics. One of the most widely used contents of plastic antioxidants is the application of antioxidants in different stages of polymerization, synthesis, granulation, storage, processing and utilization of plastics. The most widely used plastics antioxidant content two, refers to the various types of plastic materials with different molecular structure has emerged in the world today, such as polyethylene, polypropylene, styrene polymer, engineering plastics, modified plastic materials, plastic materials for application of the most antioxidants.
The commonly used plastic antioxidants are generally divided into four types according to the molecular structure and mechanism of action: hindered phenols, phosphite, thiosulphic and compound.
The plastic antioxidant hindered phenol antioxidant is the main antioxidant of plastic materials. Its main function is to react with the oxidation free radicals R and ROO generated by oxidation in plastic materials, and interrupt the growth of active chains. The hindered phenolic antioxidants are divided into polyphenols, bisphenol, polyphenols and nitrogen heterocyclic polyphenols according to the molecular structure. Single phenol and bisphenol antioxidant, such as BHT, 2246 and other products, because of its low molecular weight, high volatility and migration, easy to make plastic products coloring. In recent years, consumption in plastics has been greatly reduced.
The commonly used plastics antioxidant polyphenol antioxidant 1010 and 1076 is currently leading product of foreign and domestic plastic antioxidants, 1010 with high molecular weight, and the plastic materials have good compatibility, excellent antioxidant effect, the largest consumption has become one of the most excellent products in plastic antioxidants. Domestic 1010 and 1076 production consumption accounts for about 60% of the total amount of domestic antioxidant production and consumption.
The commonly used plastic antioxidant: the phosphite antioxidant and the sulfur containing antioxidant are the auxiliary antioxidants. The main function of the auxiliary antioxidant mechanism is through changes in its molecule phosphorus or sulfur atom valence, hydrogen peroxide and high activity in plastics decomposed into low molecular activity.
The production and consumption of phosphite antioxidant in China accounts for about 30% of the total amount of domestic antioxidants. According to the molecular structure, the sulfur - containing antioxidants produced in China can be divided into three types: thioester antioxidant, thiodiphenol antioxidant and thioether type phenol.
The commonly used plastic antioxidants: different types of main and auxiliary antioxidants, or the same type of different molecular structure of antioxidant, role function and application effect are different, each one has his good points and each man has his limitations.
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.
Cas no. : 101-02-0
HS: 29209019.00
The most important index of products: colorless, yellow liquid
Density (rho) 2525:1.183-1.192, refractive index (eta 020) : 1.585 1.590, freezing point ° C: 19-24, chloride (Cl - %) : 0.20 or less
Tax refund: the current tax refund of Triphenyl phosphite is 9 percent
Raw materials: phenol, phosphorus trichloride, phosphorus trichloride.
Compound antioxidants are made up of two or more than two different types or different types of antioxidants. They can complement each other in plastic materials, showing synergy effect. The best heat and oxygen aging effect can be achieved with minimum addition and minimum cost.
Synergistic effect means that the application effect of two or more than two kinds of additives is greater than that of the effect added separately for each auxiliary, that is, 1+1 > 2. The synergistic effect of antioxidants, light stabilizers and antioxidants combined with light stabilizers can greatly enhance the anti-aging effect of antioxidants and light stabilizers.
Antioxidant is a kind of chemical substances, when the polymer has only a small amount, we can delay or inhibit the oxidation of polymers, polymer to prevent aging and prolong its service life, also known as the "".
What is antioxidant: in a broad sense, most of the weak reductants are antioxidants and are only suitable for different industrial uses. High chemical and physical stability, or low toxic reducing agents, can be skillfully used as antioxidants in the formula.
For example: citric acid is a weak organic acid reduction, we can apply it to play the role of antioxidants in food and beverage formula; laying time long easy oxidation modification, you can add a small amount of antioxidants to prolong their storage time; plastics, synthetic fiber and rubber and polymer materials are prone to thermal oxidative degradation excellent performance, adding antioxidants can keep high polymer material, prolong the service life......
What is antioxidant? The thermal oxidation process of organic compounds is a series of free radical chain reactions. Under the action of heat, light or oxygen, the chemical bonds of organic molecules break, resulting in the generation of active free radicals and hydroperoxide. Hydroperoxide has a decomposition reaction, which also produces oxygen free radicals and hydroxyl radicals.
These free radicals can lead to a series of free radical chain reactions, resulting in fundamental changes in the structure and properties of organic compounds. The effect of antioxidant is to eliminate the newly generated free radicals, or to promote the decomposition of hydroperoxide, and to prevent the chain reaction from being carried out. Antioxidants that eliminate free radicals include aromatic amine and hindered phenol and other compounds and their derivatives. They are mainly antioxidants. Antioxidants that can decompose hydroperoxides contain organic compounds containing phosphorus and sulfur, which are called auxiliary antioxidants.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Antioxidants are the most widely used additives in plastics. One of the most widely used contents of plastic antioxidants is the application of antioxidants in different stages of polymerization, synthesis, granulation, storage, processing and utilization of plastics. The most widely used plastics antioxidant content two, refers to the various types of plastic materials with different molecular structure has emerged in the world today, such as polyethylene, polypropylene, styrene polymer, engineering plastics, modified plastic materials, plastic materials for application of the most antioxidants.
The commonly used plastic antioxidants are generally divided into four types according to the molecular structure and mechanism of action: hindered phenols, phosphite, thiosulphic and compound.
The plastic antioxidant hindered phenol antioxidant is the main antioxidant of plastic materials. Its main function is to react with the oxidation free radicals R and ROO generated by oxidation in plastic materials, and interrupt the growth of active chains. The hindered phenolic antioxidants are divided into polyphenols, bisphenol, polyphenols and nitrogen heterocyclic polyphenols according to the molecular structure. Single phenol and bisphenol antioxidant, such as BHT, 2246 and other products, because of its low molecular weight, high volatility and migration, easy to make plastic products coloring. In recent years, consumption in plastics has been greatly reduced.
The commonly used plastics antioxidant polyphenol antioxidant 1010 and 1076 is currently leading product of foreign and domestic plastic antioxidants, 1010 with high molecular weight, and the plastic materials have good compatibility, excellent antioxidant effect, the largest consumption has become one of the most excellent products in plastic antioxidants. Domestic 1010 and 1076 production consumption accounts for about 60% of the total amount of domestic antioxidant production and consumption.
The commonly used plastic antioxidant: the phosphite antioxidant and the sulfur containing antioxidant are the auxiliary antioxidants. The main function of the auxiliary antioxidant mechanism is through changes in its molecule phosphorus or sulfur atom valence, hydrogen peroxide and high activity in plastics decomposed into low molecular activity.
The production and consumption of phosphite antioxidant in China accounts for about 30% of the total amount of domestic antioxidants. According to the molecular structure, the sulfur - containing antioxidants produced in China can be divided into three types: thioester antioxidant, thiodiphenol antioxidant and thioether type phenol.
The commonly used plastic antioxidants: different types of main and auxiliary antioxidants, or the same type of different molecular structure of antioxidant, role function and application effect are different, each one has his good points and each man has his limitations.
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.
Cas no. : 101-02-0
HS: 29209019.00
The most important index of products: colorless, yellow liquid
Density (rho) 2525:1.183-1.192, refractive index (eta 020) : 1.585 1.590, freezing point ° C: 19-24, chloride (Cl - %) : 0.20 or less
Tax refund: the current tax refund of Triphenyl phosphite is 9 percent
Raw materials: phenol, phosphorus trichloride, phosphorus trichloride.
Compound antioxidants are made up of two or more than two different types or different types of antioxidants. They can complement each other in plastic materials, showing synergy effect. The best heat and oxygen aging effect can be achieved with minimum addition and minimum cost.
Synergistic effect means that the application effect of two or more than two kinds of additives is greater than that of the effect added separately for each auxiliary, that is, 1+1 > 2. The synergistic effect of antioxidants, light stabilizers and antioxidants combined with light stabilizers can greatly enhance the anti-aging effect of antioxidants and light stabilizers.
Antioxidant is a kind of chemical substances, when the polymer has only a small amount, we can delay or inhibit the oxidation of polymers, polymer to prevent aging and prolong its service life, also known as the "".
What is antioxidant: in a broad sense, most of the weak reductants are antioxidants and are only suitable for different industrial uses. High chemical and physical stability, or low toxic reducing agents, can be skillfully used as antioxidants in the formula.
For example: citric acid is a weak organic acid reduction, we can apply it to play the role of antioxidants in food and beverage formula; laying time long easy oxidation modification, you can add a small amount of antioxidants to prolong their storage time; plastics, synthetic fiber and rubber and polymer materials are prone to thermal oxidative degradation excellent performance, adding antioxidants can keep high polymer material, prolong the service life......
What is antioxidant? The thermal oxidation process of organic compounds is a series of free radical chain reactions. Under the action of heat, light or oxygen, the chemical bonds of organic molecules break, resulting in the generation of active free radicals and hydroperoxide. Hydroperoxide has a decomposition reaction, which also produces oxygen free radicals and hydroxyl radicals.
These free radicals can lead to a series of free radical chain reactions, resulting in fundamental changes in the structure and properties of organic compounds. The effect of antioxidant is to eliminate the newly generated free radicals, or to promote the decomposition of hydroperoxide, and to prevent the chain reaction from being carried out. Antioxidants that eliminate free radicals include aromatic amine and hindered phenol and other compounds and their derivatives. They are mainly antioxidants. Antioxidants that can decompose hydroperoxides contain organic compounds containing phosphorus and sulfur, which are called auxiliary antioxidants.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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