News Details
Polystyrene flame retardant synergist
2017-11-11 12:15:42
Polystyrene flame retardant synergist
Strictly speaking, the flame retardant performance of polystyrene flame retardant synergist is not ideal. The function of silicone is to improve the processing performance, mechanical properties and heat resistance of the material. But organosilicon and other flame retardants (including traditional halogen flame retardants and new halogen free flame retardants) are used together, not only have obvious synergistic flame retardant effect, wide applicability, but also have obvious complementarity.
Polystyrene flame retardant synergist in polystyrene, flame retardant has obvious synergistic effect, can improve the thermal stability of polystyrene; for the polystyrene flame retardant, can reduce the dosage of flame retardant agent, and the effects of mechanical and electrical properties of polystyrene is very small.
Silicone rubber, fatty acid salt and can be composed of red phosphorus flame retardant synergistic system, only 8% of the amount that the limiting oxygen index HDPE (LOI) reached 27.5%, and no dripping.
The intrinsic flame retardant copolymer containing silicon and phosphorus can be prepared by reaction of the reactive monomer containing silicon and phosphorus with the monomer of the flame retardant polymer. This molecular structure further strengthens the flame retardant synergistic effect of two elements of silicon and phosphorus, and the flame retardant effect is better than that of the additive type. Its synergistic flame retardant effect is very significant.
It is found that the use of polystyrene flame retardant synergistic agent with ATH or MDH can not only improve the flame retardant efficiency, but also increase the dispersion of ATH and MDH in the matrix, reduce the amount of flame retardant, overcome the inherent defects of inorganic flame retardant. It can improve the impact strength of the system and maintain good processability in the system with more inorganic fillers. The analysis of scholars such as Zhou Anan, MDH in the combustion heat of dehydration and the generation of MgO coking membrane, the membrane and the formation of SiC dense cortex, inhibited the escape of polystyrene with oxygen in the air to contact and combustion gas, thereby improving the polystyrene flame retardant, anti dropping and smoke suppression performance. In addition, organosilicon also has good synergistic flame retardant effect with many non flame retardant materials.
Effect of irradiation crosslinking on flame retardancy. The influence of radiation crosslinking on flame retardant properties is still a controversial issue, Xu Guiqin and other scholars to join the halogen-free flame retardant LLDPE irradiated by testing the LOI concluded that the addition of halogen-free flame retardant of the sample by the LOI value after irradiation increased or decreased, and the sample system, formula, irradiation dose the types and other factors, antioxidant.
Jia Shaojin and other scholars have studied the HDPE/EPDM cable materials, and the C system has been added to the halogen-free flame retardant system. It is found that the temperature resistance and tensile strength of the material after irradiation are improved, and the LOI is increased from 24 to 28. By means of cone calorimeter, the heat release rate and the effective combustion heat of the combustion process were significantly reduced by radiation crosslinking, and the amount of residual carbon was also increased.
Tris(2-chloroisopropyl)Phosphate(TCPP)
The production process of flame retardant TCPP with the following steps:
(1) to three phosphorus oxychloride and epichlorohydrin by phosphoric acid, three in catalysis of AlCl3 (2, 3- two Lv Bingji) ester mixture.
(2) added to the mixed solutions of alkali, alkali washing to neutral, static stratified, removing water; reservoir water again after the static stratified, removing water, reservoir after distillation liquid phosphoric acid three (2, 3- two Lv Bingji) ester, and the nitrogen gas purification. This process has the advantages of simple preparation process, to produce phosphoric acid three (2, 3- two Lv Bingji) ester as compared with the existing production process of high purity, its quality detection results were better than the existing technology in the production process to produce phosphoric acid three (2, 3- two chloropropyl) ester.
Process the above description of the product, such as the flame retardant TCPP production technology to further understand please contact us.
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Halogen free flame retardant is still a relatively new topic. At present, the use of halogen free flame retardant materials is becoming more and more extensive due to the strengthening of environmental awareness and health concerns of people all over the world. But the halogen-free flame retardant efficiency is not high, the decline of material performance is also very important problem.
At present, only inorganic filling system and expansion system are more practical, but these two systems are still in the development stage, each has its own advantages and disadvantages. Other flame retardants and flame retardants are developed on the basis of these two systems. Therefore, the future development of flame retardants should be based on these two systems, and have the courage to innovate, in order to truly develop non-toxic, efficient as one of the new flame retardant.
Polystyrene flame retardant synergist is a new type of halogen-free flame retardant with high efficiency, low toxicity, anti dripping and environment-friendly. It is also a kind of charring smoke suppressant. Polystyrene flame retardant synergist can also improve the processing performance and heat resistance of the base material in addition to excellent flame retardant properties.
The study of organic silicon flame retardant material is mainly through improving the molecular structure, improving the relative molecular weight, blending and so on to improve the flame retardant and smoke suppression effect, improve charring, and the processing and mechanical properties of matrix materials. High silicon containing thermal stability, oxidation stability, hydrophobicity and good flexibility, the use of polymerization, grafting and crosslinking technology of silicon containing polymer into the molecular chain, the silicon containing flame retardant polymers has the characteristics of the flame retardant, heat resistance, anti-oxidation, not easy combustion, also has high resistance to humidity and the molecular flexibility and processing performance can be improved.
The day before, polystyrene flame retardant synergist mainly include silicon resin flame retardant and polyborosiloxane flame retardant. The flame retardant method can be directly added polystyrene flame retardant synergist into polymer materials, or can be embedded with some functional groups (such as hydroxyl, amino or epoxy group) polysiloxane segments into some polymers.
Polystyrene flame retardant synergist is based on condensed phase flame retardant mechanism, that is, through the formation of cracking carbon layer and improve the oxidation resistance of carbon layer to achieve its flame retardant effect.
After adding polystyrene flame retardant synergist in polymer materials, polystyrene flame retardant synergist mostly migrates to the surface of the material, forming a polymer gradient material with polystyrene flame retardant enrichment layer. Once it is burned, a special inorganic insulating protective layer is formed. This not only prevents the decomposition of combustion products, but also inhibits the thermal decomposition of polymer materials, and achieves the purpose of flame retardant, low smoke and low toxicity.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Strictly speaking, the flame retardant performance of polystyrene flame retardant synergist is not ideal. The function of silicone is to improve the processing performance, mechanical properties and heat resistance of the material. But organosilicon and other flame retardants (including traditional halogen flame retardants and new halogen free flame retardants) are used together, not only have obvious synergistic flame retardant effect, wide applicability, but also have obvious complementarity.
Polystyrene flame retardant synergist in polystyrene, flame retardant has obvious synergistic effect, can improve the thermal stability of polystyrene; for the polystyrene flame retardant, can reduce the dosage of flame retardant agent, and the effects of mechanical and electrical properties of polystyrene is very small.
Silicone rubber, fatty acid salt and can be composed of red phosphorus flame retardant synergistic system, only 8% of the amount that the limiting oxygen index HDPE (LOI) reached 27.5%, and no dripping.
The intrinsic flame retardant copolymer containing silicon and phosphorus can be prepared by reaction of the reactive monomer containing silicon and phosphorus with the monomer of the flame retardant polymer. This molecular structure further strengthens the flame retardant synergistic effect of two elements of silicon and phosphorus, and the flame retardant effect is better than that of the additive type. Its synergistic flame retardant effect is very significant.
It is found that the use of polystyrene flame retardant synergistic agent with ATH or MDH can not only improve the flame retardant efficiency, but also increase the dispersion of ATH and MDH in the matrix, reduce the amount of flame retardant, overcome the inherent defects of inorganic flame retardant. It can improve the impact strength of the system and maintain good processability in the system with more inorganic fillers. The analysis of scholars such as Zhou Anan, MDH in the combustion heat of dehydration and the generation of MgO coking membrane, the membrane and the formation of SiC dense cortex, inhibited the escape of polystyrene with oxygen in the air to contact and combustion gas, thereby improving the polystyrene flame retardant, anti dropping and smoke suppression performance. In addition, organosilicon also has good synergistic flame retardant effect with many non flame retardant materials.
Effect of irradiation crosslinking on flame retardancy. The influence of radiation crosslinking on flame retardant properties is still a controversial issue, Xu Guiqin and other scholars to join the halogen-free flame retardant LLDPE irradiated by testing the LOI concluded that the addition of halogen-free flame retardant of the sample by the LOI value after irradiation increased or decreased, and the sample system, formula, irradiation dose the types and other factors, antioxidant.
Jia Shaojin and other scholars have studied the HDPE/EPDM cable materials, and the C system has been added to the halogen-free flame retardant system. It is found that the temperature resistance and tensile strength of the material after irradiation are improved, and the LOI is increased from 24 to 28. By means of cone calorimeter, the heat release rate and the effective combustion heat of the combustion process were significantly reduced by radiation crosslinking, and the amount of residual carbon was also increased.
Tris(2-chloroisopropyl)Phosphate(TCPP)
The production process of flame retardant TCPP with the following steps:
(1) to three phosphorus oxychloride and epichlorohydrin by phosphoric acid, three in catalysis of AlCl3 (2, 3- two Lv Bingji) ester mixture.
(2) added to the mixed solutions of alkali, alkali washing to neutral, static stratified, removing water; reservoir water again after the static stratified, removing water, reservoir after distillation liquid phosphoric acid three (2, 3- two Lv Bingji) ester, and the nitrogen gas purification. This process has the advantages of simple preparation process, to produce phosphoric acid three (2, 3- two Lv Bingji) ester as compared with the existing production process of high purity, its quality detection results were better than the existing technology in the production process to produce phosphoric acid three (2, 3- two chloropropyl) ester.
Process the above description of the product, such as the flame retardant TCPP production technology to further understand please contact us.
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Halogen free flame retardant is still a relatively new topic. At present, the use of halogen free flame retardant materials is becoming more and more extensive due to the strengthening of environmental awareness and health concerns of people all over the world. But the halogen-free flame retardant efficiency is not high, the decline of material performance is also very important problem.
At present, only inorganic filling system and expansion system are more practical, but these two systems are still in the development stage, each has its own advantages and disadvantages. Other flame retardants and flame retardants are developed on the basis of these two systems. Therefore, the future development of flame retardants should be based on these two systems, and have the courage to innovate, in order to truly develop non-toxic, efficient as one of the new flame retardant.
Polystyrene flame retardant synergist is a new type of halogen-free flame retardant with high efficiency, low toxicity, anti dripping and environment-friendly. It is also a kind of charring smoke suppressant. Polystyrene flame retardant synergist can also improve the processing performance and heat resistance of the base material in addition to excellent flame retardant properties.
The study of organic silicon flame retardant material is mainly through improving the molecular structure, improving the relative molecular weight, blending and so on to improve the flame retardant and smoke suppression effect, improve charring, and the processing and mechanical properties of matrix materials. High silicon containing thermal stability, oxidation stability, hydrophobicity and good flexibility, the use of polymerization, grafting and crosslinking technology of silicon containing polymer into the molecular chain, the silicon containing flame retardant polymers has the characteristics of the flame retardant, heat resistance, anti-oxidation, not easy combustion, also has high resistance to humidity and the molecular flexibility and processing performance can be improved.
The day before, polystyrene flame retardant synergist mainly include silicon resin flame retardant and polyborosiloxane flame retardant. The flame retardant method can be directly added polystyrene flame retardant synergist into polymer materials, or can be embedded with some functional groups (such as hydroxyl, amino or epoxy group) polysiloxane segments into some polymers.
Polystyrene flame retardant synergist is based on condensed phase flame retardant mechanism, that is, through the formation of cracking carbon layer and improve the oxidation resistance of carbon layer to achieve its flame retardant effect.
After adding polystyrene flame retardant synergist in polymer materials, polystyrene flame retardant synergist mostly migrates to the surface of the material, forming a polymer gradient material with polystyrene flame retardant enrichment layer. Once it is burned, a special inorganic insulating protective layer is formed. This not only prevents the decomposition of combustion products, but also inhibits the thermal decomposition of polymer materials, and achieves the purpose of flame retardant, low smoke and low toxicity.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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