News Details
Compound antioxidant
2018-1-13 11:27:51
Compound antioxidant
The compound antioxidant has the characteristics of short development cycle, good effect, good comprehensive performance, and full synergistic effect of various additives.
The compound antioxidant Naugard900 series has the characteristics of low volatilization and no precipitation. The compound antioxidant CyanoxXS4 is a compound system containing hindered phenol and phosphatide, which is used to enhance the processing performance and long-term stability of polyolefin.
Now despite the large number of compound antioxidant, but the synergy mechanism is not clear, so the selection of polymer stabilization formula is mainly based on experience and actual application effect.
Antioxidant IrganoxB series, has been industrialized production and obtained a good effect, but with the polymer with carbon further research in the theory of free radical scavenger, people put forward a new ternary composite antioxidant formula: carbon capture free radicals agent + main antioxidants + auxiliary antioxidant, HP1 IrganoxB921 (85% + 15% HP136) and HP2 IrganoxB215 (85% + 85% HP136), the formula can also be with light stabilizer compound with oxygen stabilization, the development of a new generation of stabilizing formula will be the key point of the development of the polymerization technology aging formula in the future.
The synergistic effect of amines or phenolic antioxidants and peroxide decomposers has increased the resistance, oxidation and aging resistance of materials.
The synergistic effect includes the synergistic effect of the molecules and the synergistic effect of the molecules, and Scott et al. proposed the concept of uniform synergistic effect and non-uniform synergistic effect between the molecules. The uniform synergistic effect is the synergistic effect between two compounds with the same mechanism but different activity. The non-uniform synergistic effect is the synergistic effect between two or several different mechanisms.
The synergy in the molecule is called self-synergism. It is a stabilizer that contains multiple functional groups and has a synergistic effect on each other. When the phenolic antioxidant and sulfuric antioxidants are used, they have a higher long-term protection against oxidation than when they are used alone.
Phosphorous antioxidants can be used to decompose hydrogen peroxide, which is mainly used as an antioxidant in processing. Due to the different processing temperature, the processing stability is different. Processing in normal temperature (200 ℃) near phosphorus-containing antioxidants is used, under the condition of high temperature, phosphorus of phenolic antioxidants and antioxidant, phenolic antioxidants can capture hydrogen peroxide, makes the phosphorus-containing antioxidants is more stable, which showed a synergistic effect. For example, in the resistance to polyphenol antioxidant and organic phosphate, the number of free radicals has been greatly increased.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is the main raw materials of phenol, phosphorus oxychloride, phosphorus trichloride, phosphorus oxychloride, phosphorus trichloride belong to highly toxic chemicals, state control chemicals. Through raw material phenol, triclosan phosphorous and trichloride phosphorus, the direct method of trichloro phosphorus is used to direct (also known as thermal) and the indirect method of trichloride phosphorus (also known as cold method).
According to the relevant state regulations, tppi is currently exported to 9 kinds of dangerous goods.
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.
Some antioxidants are associated with harmful effects, known as antioxidant antagonists. Hindered amine is not compatible with thiodipropionate because it is alkaline and presents antagonistic effect. There are also antagonistic effects between polysulfide in vulcanized rubber and certain anti-aging agents. ZhongFang amine and hindered alkyl phenol is effective composite antioxidants, but when they are added to the containing carbon black (ultraviolet screening agent) of polyethylene, is better than no adding carbon black polyethylene antioxidant performance is poor, the reason is that carbon black surface of amine or phenolic antioxidants have catalytic oxidation.
The present situation and development trend of antioxidants at home and abroad. The total consumption of global antioxidants in 2006 was about 350kt. By region, the asia-pacific region (excluding China) accounts for about 30%, Europe 25%, North America 25% and the rest 20%. According to the production capacity of the product structure, the phenolic antioxidant is about 50%, and phosphatide is 35% and the other 15%.
Over the past few years, global production of antioxidants has grown at an annual rate of about 5. 5%, and the annual growth rate of the production of sodium phosphatides is about 7%, which is the leading position in the field of antioxidant. According to statistics, in 2005, the output of antioxidants in Asia accounted for about 50% of global production, by 2010 China antioxidant global share will increase from 7% in 2005 to more than 7%.
At present, the production of antioxidants in Asia mainly focuses on China, South Korea, Taiwan and Japan. In recent years, with the rapid growth of plastic production capacity and production, the production and consumption of antioxidants in China have been stimulated and driven accordingly. Statistics show that the total production of plastic products in China exceeded 20 million t in 2005, reaching 2198. 550000 t.
From 2005 to 2010 the average annual growth rate of consumption of about 10% of China polyolefin, so in the next few years plastics processing and applications of polyolefin matching with antioxidant demand growth will remain at 10%, is expected in 2010 China's demand for plastic antioxidants will reach about 74 kt/a, this to the development of antioxidant provides a good market prospect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The compound antioxidant has the characteristics of short development cycle, good effect, good comprehensive performance, and full synergistic effect of various additives.
The compound antioxidant Naugard900 series has the characteristics of low volatilization and no precipitation. The compound antioxidant CyanoxXS4 is a compound system containing hindered phenol and phosphatide, which is used to enhance the processing performance and long-term stability of polyolefin.
Now despite the large number of compound antioxidant, but the synergy mechanism is not clear, so the selection of polymer stabilization formula is mainly based on experience and actual application effect.
Antioxidant IrganoxB series, has been industrialized production and obtained a good effect, but with the polymer with carbon further research in the theory of free radical scavenger, people put forward a new ternary composite antioxidant formula: carbon capture free radicals agent + main antioxidants + auxiliary antioxidant, HP1 IrganoxB921 (85% + 15% HP136) and HP2 IrganoxB215 (85% + 85% HP136), the formula can also be with light stabilizer compound with oxygen stabilization, the development of a new generation of stabilizing formula will be the key point of the development of the polymerization technology aging formula in the future.
The synergistic effect of amines or phenolic antioxidants and peroxide decomposers has increased the resistance, oxidation and aging resistance of materials.
The synergistic effect includes the synergistic effect of the molecules and the synergistic effect of the molecules, and Scott et al. proposed the concept of uniform synergistic effect and non-uniform synergistic effect between the molecules. The uniform synergistic effect is the synergistic effect between two compounds with the same mechanism but different activity. The non-uniform synergistic effect is the synergistic effect between two or several different mechanisms.
The synergy in the molecule is called self-synergism. It is a stabilizer that contains multiple functional groups and has a synergistic effect on each other. When the phenolic antioxidant and sulfuric antioxidants are used, they have a higher long-term protection against oxidation than when they are used alone.
Phosphorous antioxidants can be used to decompose hydrogen peroxide, which is mainly used as an antioxidant in processing. Due to the different processing temperature, the processing stability is different. Processing in normal temperature (200 ℃) near phosphorus-containing antioxidants is used, under the condition of high temperature, phosphorus of phenolic antioxidants and antioxidant, phenolic antioxidants can capture hydrogen peroxide, makes the phosphorus-containing antioxidants is more stable, which showed a synergistic effect. For example, in the resistance to polyphenol antioxidant and organic phosphate, the number of free radicals has been greatly increased.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is the main raw materials of phenol, phosphorus oxychloride, phosphorus trichloride, phosphorus oxychloride, phosphorus trichloride belong to highly toxic chemicals, state control chemicals. Through raw material phenol, triclosan phosphorous and trichloride phosphorus, the direct method of trichloro phosphorus is used to direct (also known as thermal) and the indirect method of trichloride phosphorus (also known as cold method).
According to the relevant state regulations, tppi is currently exported to 9 kinds of dangerous goods.
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.
Some antioxidants are associated with harmful effects, known as antioxidant antagonists. Hindered amine is not compatible with thiodipropionate because it is alkaline and presents antagonistic effect. There are also antagonistic effects between polysulfide in vulcanized rubber and certain anti-aging agents. ZhongFang amine and hindered alkyl phenol is effective composite antioxidants, but when they are added to the containing carbon black (ultraviolet screening agent) of polyethylene, is better than no adding carbon black polyethylene antioxidant performance is poor, the reason is that carbon black surface of amine or phenolic antioxidants have catalytic oxidation.
The present situation and development trend of antioxidants at home and abroad. The total consumption of global antioxidants in 2006 was about 350kt. By region, the asia-pacific region (excluding China) accounts for about 30%, Europe 25%, North America 25% and the rest 20%. According to the production capacity of the product structure, the phenolic antioxidant is about 50%, and phosphatide is 35% and the other 15%.
Over the past few years, global production of antioxidants has grown at an annual rate of about 5. 5%, and the annual growth rate of the production of sodium phosphatides is about 7%, which is the leading position in the field of antioxidant. According to statistics, in 2005, the output of antioxidants in Asia accounted for about 50% of global production, by 2010 China antioxidant global share will increase from 7% in 2005 to more than 7%.
At present, the production of antioxidants in Asia mainly focuses on China, South Korea, Taiwan and Japan. In recent years, with the rapid growth of plastic production capacity and production, the production and consumption of antioxidants in China have been stimulated and driven accordingly. Statistics show that the total production of plastic products in China exceeded 20 million t in 2005, reaching 2198. 550000 t.
From 2005 to 2010 the average annual growth rate of consumption of about 10% of China polyolefin, so in the next few years plastics processing and applications of polyolefin matching with antioxidant demand growth will remain at 10%, is expected in 2010 China's demand for plastic antioxidants will reach about 74 kt/a, this to the development of antioxidant provides a good market prospect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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