News Details
Polypropylene is used as an antioxidant for thioester
2018-1-13 11:27:43
Polypropylene is used as an antioxidant for thioester
Dipropionate dipropionate, the name of the product is antioxidant DLTP; Dipropionate 2 (octadecanol) ester, the product name is antioxidant DSTP.
Polypropylene with thio ester antioxidant DLTP, DSTP is industrialization of sulfur in the 1940 s generation. It is the most important antioxidants, thio ester antioxidant can with polypropylene decomposition of hydrogen peroxide in the polymer, polymer ambient conditions of hot oxygen aging and color stability of protection, and hindered phenolic antioxidant used to produce a good synergistic effect, has the very good price performance ratio.
Polypropylene is one of the auxiliary antioxidants in the domestic and foreign production sales, which is second only to the anti-oxidant of phosphatate. The synergistic effect test data of 1010 and DSTP were used to show that the thermal oxygen stability of the antioxidant 1010/DSTP system was better than that of 1010/168 (B215) antioxidant system when the number of shares added was the same.
Thio ester is a kind of commonly used auxiliary antioxidant, is mainly the second propionic acid and ester, generally by glucosinolates two propionic acid and fatty alcohol ester, representative varieties for sulfur two lauryl propionate (DLTDP) and sulfur generation 2 18 carbon alcohol propionate (DSTDP). The synthesis of dilauric acid dipropionate is the reaction of acrylonitrile and sodium sulfide in aqueous solution. The synthesis of dilauryl dipropionate was synthesized by hydrolysis of sulfuric acid and lauryl alcohol esterification.
Epoxy plasticizer is compounds containing epoxy group three yuan, mainly used for PVC, not only have plasticizing effect, and can play a stabilizing agent, such as stabilizer and metal salt applications at the same time, its stability effect more pronounced. The commonly used epoxy plasticizers are divided into three types: epoxidized oil, epoxy fatty acid monoester and epoxy tetrahydrophthalate. Among them, epoxidated oil, namely epoxy tricarboxylic acid ester is the most used type of epoxy plasticizer, the main variety is epoxidated soybean oil. Epoxy fatty acid monoester as the source of fatty acids is different, its components also have very big difference, general with being named after the name of the fatty acids, such as epoxy chaff oleic acid ester, epoxy soybean oleic acid ester, epoxy tall oleic acid ester, etc.
Hindered phenolic antioxidant hindered phenol antioxidants with spatial structure of phenolic compounds. The main type of antioxygenation agent for chain termination. According to the number of blocked phenolic functional groups in the molecule, it is generally divided into one unitary blocked phenol and the multiple blocked phenol.
Hindered phenolic antioxidants are mainly used in plastic products, and the synergistic effect is shown with auxiliary antioxidants such as phosphatide and sulfide.
Polypropylene is a thermoplastic resin produced by polymerization of propylene. According to the arrangement of methyl groups, there are three kinds of isotactic polypropylene, random polypropylene and polypropylene.
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.
The same side of the methyl groups are arranged in the main chain of the molecule called isotactic polypropylene, if methyl chaotic are arranged at both sides of the main chain molecules called atactic polypropylene, when both sides of the methyl arranged alternately in the main chain of the molecule called syndiotactic polypropylene. In the polypropylene resin of general industrial production, the content of the isotactic structure is about 95%, and the rest is the random or stromal polypropylene. Industrial products are mainly composed of isotopes.
Polypropylene also includes copolymer of propylene with a small amount of ethylene. Usually translucent colorless solid, odorless and non-toxic. Because of its neat and high crystallization structure, so the melting point can be as high as 167 ℃. Heat resistance, corrosion resistance, the use of steam sterilization is a prominent advantage. Small density, the lightest general plastic. The disadvantage is that the low temperature impact resistance is relatively easy to be aged, but can be overcome by modification.
Copolymer of PP material with low thermal deformation temperature (100 ℃), low transparency and gloss, low rigidity, but have stronger impact strength, impact strength of PP increased with the increase of ethylene content increased. PP vicat softening temperature is 150 ℃. Due to the high crystallinity, the surface stiffness and scratch resistance of this material are very good. There is no problem of environmental stress cracking in PP.
The melt mass flow rate (MFR) of PP is usually 1~100. PP materials with low MFR have good impact resistance and low tensile strength. For the same MFR materials, the copolymers have higher impact strength than homozygous. Because of crystallization, the shrinkage rate of PP is quite high, generally 1.6~2.0%.
Polypropylene has excellent mechanical properties due to its high crystallinity and structure. The absolute value of the mechanical properties of polypropylene is higher than that of polyethylene, but it is still a relatively low variety in plastic materials, and its tensile strength can reach only 30 MPa or slightly higher. While the larger polypropylene has a higher tensile strength, the impact strength of the material decreases with the increase of the index, but it does not change after dropping to a certain number.
Temperature and loading rate have great influence on the toughness of polypropylene. When the temperature is higher than the vitrification temperature, the impact failure is ductile fracture, which is lower than the vitrification temperature, and the impact strength value is greatly reduced. Increasing the loading rate can increase the temperature of fracture transition to brittle fracture. Polypropylene has excellent resistance to bending fatigue, and its products can bend 106 times at normal temperature without damage.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Dipropionate dipropionate, the name of the product is antioxidant DLTP; Dipropionate 2 (octadecanol) ester, the product name is antioxidant DSTP.
Polypropylene with thio ester antioxidant DLTP, DSTP is industrialization of sulfur in the 1940 s generation. It is the most important antioxidants, thio ester antioxidant can with polypropylene decomposition of hydrogen peroxide in the polymer, polymer ambient conditions of hot oxygen aging and color stability of protection, and hindered phenolic antioxidant used to produce a good synergistic effect, has the very good price performance ratio.
Polypropylene is one of the auxiliary antioxidants in the domestic and foreign production sales, which is second only to the anti-oxidant of phosphatate. The synergistic effect test data of 1010 and DSTP were used to show that the thermal oxygen stability of the antioxidant 1010/DSTP system was better than that of 1010/168 (B215) antioxidant system when the number of shares added was the same.
Thio ester is a kind of commonly used auxiliary antioxidant, is mainly the second propionic acid and ester, generally by glucosinolates two propionic acid and fatty alcohol ester, representative varieties for sulfur two lauryl propionate (DLTDP) and sulfur generation 2 18 carbon alcohol propionate (DSTDP). The synthesis of dilauric acid dipropionate is the reaction of acrylonitrile and sodium sulfide in aqueous solution. The synthesis of dilauryl dipropionate was synthesized by hydrolysis of sulfuric acid and lauryl alcohol esterification.
Epoxy plasticizer is compounds containing epoxy group three yuan, mainly used for PVC, not only have plasticizing effect, and can play a stabilizing agent, such as stabilizer and metal salt applications at the same time, its stability effect more pronounced. The commonly used epoxy plasticizers are divided into three types: epoxidized oil, epoxy fatty acid monoester and epoxy tetrahydrophthalate. Among them, epoxidated oil, namely epoxy tricarboxylic acid ester is the most used type of epoxy plasticizer, the main variety is epoxidated soybean oil. Epoxy fatty acid monoester as the source of fatty acids is different, its components also have very big difference, general with being named after the name of the fatty acids, such as epoxy chaff oleic acid ester, epoxy soybean oleic acid ester, epoxy tall oleic acid ester, etc.
Hindered phenolic antioxidant hindered phenol antioxidants with spatial structure of phenolic compounds. The main type of antioxygenation agent for chain termination. According to the number of blocked phenolic functional groups in the molecule, it is generally divided into one unitary blocked phenol and the multiple blocked phenol.
Hindered phenolic antioxidants are mainly used in plastic products, and the synergistic effect is shown with auxiliary antioxidants such as phosphatide and sulfide.
Polypropylene is a thermoplastic resin produced by polymerization of propylene. According to the arrangement of methyl groups, there are three kinds of isotactic polypropylene, random polypropylene and polypropylene.
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.
The same side of the methyl groups are arranged in the main chain of the molecule called isotactic polypropylene, if methyl chaotic are arranged at both sides of the main chain molecules called atactic polypropylene, when both sides of the methyl arranged alternately in the main chain of the molecule called syndiotactic polypropylene. In the polypropylene resin of general industrial production, the content of the isotactic structure is about 95%, and the rest is the random or stromal polypropylene. Industrial products are mainly composed of isotopes.
Polypropylene also includes copolymer of propylene with a small amount of ethylene. Usually translucent colorless solid, odorless and non-toxic. Because of its neat and high crystallization structure, so the melting point can be as high as 167 ℃. Heat resistance, corrosion resistance, the use of steam sterilization is a prominent advantage. Small density, the lightest general plastic. The disadvantage is that the low temperature impact resistance is relatively easy to be aged, but can be overcome by modification.
Copolymer of PP material with low thermal deformation temperature (100 ℃), low transparency and gloss, low rigidity, but have stronger impact strength, impact strength of PP increased with the increase of ethylene content increased. PP vicat softening temperature is 150 ℃. Due to the high crystallinity, the surface stiffness and scratch resistance of this material are very good. There is no problem of environmental stress cracking in PP.
The melt mass flow rate (MFR) of PP is usually 1~100. PP materials with low MFR have good impact resistance and low tensile strength. For the same MFR materials, the copolymers have higher impact strength than homozygous. Because of crystallization, the shrinkage rate of PP is quite high, generally 1.6~2.0%.
Polypropylene has excellent mechanical properties due to its high crystallinity and structure. The absolute value of the mechanical properties of polypropylene is higher than that of polyethylene, but it is still a relatively low variety in plastic materials, and its tensile strength can reach only 30 MPa or slightly higher. While the larger polypropylene has a higher tensile strength, the impact strength of the material decreases with the increase of the index, but it does not change after dropping to a certain number.
Temperature and loading rate have great influence on the toughness of polypropylene. When the temperature is higher than the vitrification temperature, the impact failure is ductile fracture, which is lower than the vitrification temperature, and the impact strength value is greatly reduced. Increasing the loading rate can increase the temperature of fracture transition to brittle fracture. Polypropylene has excellent resistance to bending fatigue, and its products can bend 106 times at normal temperature without damage.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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