News Details
High polymer material antioxidant
2018-1-6 12:17:37
High polymer material antioxidant
There are oxidation problems in the application of polymer synthesis, storage, heat processing and final products. Preventing the high polymer oxidation mainly by adding the high polymer material anti-oxidant.
The high polymer materials added to the polymer industry are generally 0.1%-3% (plastic, about 0.1%, rubber 3%). The use of main antioxidant and antioxygenation agents is the most effective system to prevent the thermal oxygen aging.
The combination of blocked phenol and hydrogen peroxide decomposition agent is the most commonly used system. It has synergistic effect, which is nontoxic, efficient and does not produce color pollution. Most synthetic polymers are used to prevent the heat and oxygen aging of the macromolecule.
The application of high molecular weight antioxidant for Irganox- 1010, Irganox- 1076, Irganox- 1098, Irganox- 1330, Irganox- 3114, etc. Has solved the problem of high polymer thermal oxidation stabilization. Polypropylene, for example, is not one of the hot oxygen aging polymer, without antioxidants to exist, the safety life at room temperature for only one year, but after adding 0.1% to 0.1% of rganox - 1010, polypropylene products such as bucket and polypropylene fiber clothing, its interior has reached 10 years service life. Using Irganox-1425 (phenol) and subphosphate (Weston618), the life of polypropylene film increased from 250h to 1000h due to strong synergistic effect.
The ultraviolet absorbent and phosphatide and the synergistic effect of o-hydroxyphenylketone can improve the aging life of polyethylene from 400h to 8500h. It should be pointed out that, in addition to the widespread application of antioxidants in macromolecule industry, it can also be used in petroleum products, lubricants, food industry and health care.
It is commonly used in petroleum products and lubricants to prevent phenol, aromatic amine, hydroperoxide decomposing agent and some metal ion deactivation agent as an effective antioxidant. Because the antioxidants in the food industry are non-toxic, natural antioxidant and high molecular retarded phenol antioxidants are of great importance.
The antioxidants used in health care are absolutely non-toxic and can be absorbed by the body, so they are limited to Vitamin E, Vitamin C, beta-carotene and polyphenols in health care.
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, when is given priority to with metal stabilizer, cooperate with this product can reduce the harm of metal chlorides, maintain product transparency, and inhibition of color change, is also a good chemical intermediates, with phosphorus-containing flame retardant and use, can play a role of flame retardant antioxidant, and with stable performance, light can be used for synthesis alkyd resin and polyester, main raw materials for resin, this product can also be preparing pesticide intermediates trimethyl phosphite.
Broadly speaking, most weak reducers are antioxidants, which are only suitable for different industrial USES. High chemical, physical stability, or low-toxicity, weak reductants can be cleverly used in the formulation as an antioxidant.
For example, citric acid is a weak reductive organic acid, which we can use in beverage formulation to play an antioxidant role; It is easy to oxidize the food and add a small amount of antioxidants to prolong their storage time. Plastics, synthetic fibers and rubber are susceptible to thermal oxygen degradation, and the addition of antioxidants can maintain the excellent properties of the polymer materials and prolong the life of the polymer.
Thermal oxidation process of organic compounds is a series of free radical chain reaction, in under the action of heat, light or oxygen, organic molecules breaking of chemical bonds, generating active free radicals and hydrogen peroxide. The hydrogen peroxide decomposition reaction also produces the hydrocarbon free radical and hydroxyl radical. These free radicals can trigger a series of free radical chain reactions, resulting in fundamental changes in the structure and nature of organic compounds.
The effect of antioxidants is to remove the newly produced free radicals, or to induce the decomposition of hydroperoxide to prevent chain reactions.
The antioxidant that can eliminate free radical is aromatic amine and impeded phenol and other compounds and their derivatives, called the main antioxidant; The antioxygenation of hydrogen peroxide can be divided into organic compounds containing phosphorus and sulfur, called auxiliary antioxidant.
In recent years, domestic production capacity and rapid growth, not only new product development, technological progress and structural adjustment also has made certain progress, such as special antioxidants, such as liquid hindered phenol 1135, nitrogen hindered phenol 3114, 1098, half of hindered phenol antioxidant 245 and other products have a stable production capacity and production; The synthesis of retarded phenol antioxygenation agent and its intermediates was adopted without tin catalyst technology, which reduced the content of heavy metal tin in phenol antioxygenation agent and satisfied foreign environmental protection, etc. The main production enterprise's anti-oxygen agent 168 hydrolysis stability test more than 48 hours, reaching the international advanced level.
The development and production of antioxidant agents are developed in the direction of general and special purpose products. Compound antioxidant is more and more important to the production enterprises. The main production enterprises are tending to the series development of antioxidant and other plastic auxiliaries. Some enterprises have started to produce the intermediate materials of the raw materials to form the production and operation mode of upstream and downstream integration.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
There are oxidation problems in the application of polymer synthesis, storage, heat processing and final products. Preventing the high polymer oxidation mainly by adding the high polymer material anti-oxidant.
The high polymer materials added to the polymer industry are generally 0.1%-3% (plastic, about 0.1%, rubber 3%). The use of main antioxidant and antioxygenation agents is the most effective system to prevent the thermal oxygen aging.
The combination of blocked phenol and hydrogen peroxide decomposition agent is the most commonly used system. It has synergistic effect, which is nontoxic, efficient and does not produce color pollution. Most synthetic polymers are used to prevent the heat and oxygen aging of the macromolecule.
The application of high molecular weight antioxidant for Irganox- 1010, Irganox- 1076, Irganox- 1098, Irganox- 1330, Irganox- 3114, etc. Has solved the problem of high polymer thermal oxidation stabilization. Polypropylene, for example, is not one of the hot oxygen aging polymer, without antioxidants to exist, the safety life at room temperature for only one year, but after adding 0.1% to 0.1% of rganox - 1010, polypropylene products such as bucket and polypropylene fiber clothing, its interior has reached 10 years service life. Using Irganox-1425 (phenol) and subphosphate (Weston618), the life of polypropylene film increased from 250h to 1000h due to strong synergistic effect.
The ultraviolet absorbent and phosphatide and the synergistic effect of o-hydroxyphenylketone can improve the aging life of polyethylene from 400h to 8500h. It should be pointed out that, in addition to the widespread application of antioxidants in macromolecule industry, it can also be used in petroleum products, lubricants, food industry and health care.
It is commonly used in petroleum products and lubricants to prevent phenol, aromatic amine, hydroperoxide decomposing agent and some metal ion deactivation agent as an effective antioxidant. Because the antioxidants in the food industry are non-toxic, natural antioxidant and high molecular retarded phenol antioxidants are of great importance.
The antioxidants used in health care are absolutely non-toxic and can be absorbed by the body, so they are limited to Vitamin E, Vitamin C, beta-carotene and polyphenols in health care.
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, when is given priority to with metal stabilizer, cooperate with this product can reduce the harm of metal chlorides, maintain product transparency, and inhibition of color change, is also a good chemical intermediates, with phosphorus-containing flame retardant and use, can play a role of flame retardant antioxidant, and with stable performance, light can be used for synthesis alkyd resin and polyester, main raw materials for resin, this product can also be preparing pesticide intermediates trimethyl phosphite.
Broadly speaking, most weak reducers are antioxidants, which are only suitable for different industrial USES. High chemical, physical stability, or low-toxicity, weak reductants can be cleverly used in the formulation as an antioxidant.
For example, citric acid is a weak reductive organic acid, which we can use in beverage formulation to play an antioxidant role; It is easy to oxidize the food and add a small amount of antioxidants to prolong their storage time. Plastics, synthetic fibers and rubber are susceptible to thermal oxygen degradation, and the addition of antioxidants can maintain the excellent properties of the polymer materials and prolong the life of the polymer.
Thermal oxidation process of organic compounds is a series of free radical chain reaction, in under the action of heat, light or oxygen, organic molecules breaking of chemical bonds, generating active free radicals and hydrogen peroxide. The hydrogen peroxide decomposition reaction also produces the hydrocarbon free radical and hydroxyl radical. These free radicals can trigger a series of free radical chain reactions, resulting in fundamental changes in the structure and nature of organic compounds.
The effect of antioxidants is to remove the newly produced free radicals, or to induce the decomposition of hydroperoxide to prevent chain reactions.
The antioxidant that can eliminate free radical is aromatic amine and impeded phenol and other compounds and their derivatives, called the main antioxidant; The antioxygenation of hydrogen peroxide can be divided into organic compounds containing phosphorus and sulfur, called auxiliary antioxidant.
In recent years, domestic production capacity and rapid growth, not only new product development, technological progress and structural adjustment also has made certain progress, such as special antioxidants, such as liquid hindered phenol 1135, nitrogen hindered phenol 3114, 1098, half of hindered phenol antioxidant 245 and other products have a stable production capacity and production; The synthesis of retarded phenol antioxygenation agent and its intermediates was adopted without tin catalyst technology, which reduced the content of heavy metal tin in phenol antioxygenation agent and satisfied foreign environmental protection, etc. The main production enterprise's anti-oxygen agent 168 hydrolysis stability test more than 48 hours, reaching the international advanced level.
The development and production of antioxidant agents are developed in the direction of general and special purpose products. Compound antioxidant is more and more important to the production enterprises. The main production enterprises are tending to the series development of antioxidant and other plastic auxiliaries. Some enterprises have started to produce the intermediate materials of the raw materials to form the production and operation mode of upstream and downstream integration.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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