News Details
Flame retardant of unsaturated resin
2017-11-21 11:35:29
Flame retardant of unsaturated resin
CFRs, chlorinated flame retardant general name, the main types of SCCP, PCB, TCBPA, etc.; chlorine plasticizer, chlorine plasticizer general name, mainly including chlorinated paraffin (SCCP, MCCP), five methyl stearate (MPCS) and so on.
Because of its low price, chlorinated flame retardants are still widely used as flame retardants for unsaturated resins. Chlorinated paraffin chloride content was highest in flame retardant industry important, due to poor thermal stability, only suitable for processing the composite temperature below 200 DEG C, chlorinated alicyclic and four chloro two formic acid anhydride, high thermal stability, commonly used as a flame retardant unsaturated resin.
Flame retardant mechanism of organic chlorine and organic bromine flame retardants are similar, but not as efficient as brominated flame retardants, usually with with antimony oxide using chlorendic anhydride (HET acid) is a reactive flame retardant epoxy chloropropane, also can be used as reaction monomers to make transparent chlorinated flame retardant resin. Chlorinated paraffin is the main variety of chlorine series flame retardants.
According to the chlorine content can be divided into 50-70 varieties. At present, chlorinated paraffin is mainly made of No. 70, and chlorinated paraffin has both flame retardant and toughening functions. The synergistic effect of chlorine antimony is very obvious. When the chlorine content in the resin is more than 10% and the ratio of SB:CL is 1:2, this coordination will produce the best synergistic effect.
Chlorinated flame retardants are mainly chlorinated paraffins with high chlorine content. At present, China is mainly chlorine wax -52 and chlorine wax -40, and the excellent chlorine wax -70 only accounts for about 30% of the production capacity of chlorine based flame retardants. At present, the flame retardants of unsaturated resins are developing towards pollution-free, high purity, high thermal stability and high chlorine content.
Therefore, China should speed up the pace of development of chlorinated wax -70, using environmentally friendly water phase process to produce chlorine wax -70. In addition, the reaction has been widely used for the new type of high performance chlorinated flame retardants, such as phthalic anhydride four chloro two, four chloro bisphenol A, hexachloro cyclopentene and limonene, double (hexachlorocyclopentadiane) cyclooctane, perchloro cyclopent decane, four chloro phthalic anhydride and chlorendic acid should speed up the development of.
Chlorine flame retardants and brominated flame retardants and halogen halogen flame retardant, the environmental damage is mainly manifested in: the immune system toxicity effect on the endocrine system, influence on reproductive and developmental toxicity (carcinogenic effects, other mental and psychological disorders), the majority of halide belongs to environmental hormones.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
Intumescent flame retardant, intumescent flame retardant, it does not contain halogen, nor with antimony oxide as a synergistic agent, containing this kind of flame retardant polymer is heated, the surface can generate a uniform layer of carbon foam layer, to heat and oxygen, and smoke suppression effect, and prevent the melting drop phenomenon, so it has good flame retardant properties.
Phosphorus nitrogel flame retardant system mainly consists of three parts: (1) carbon source (charring agent) for carbon rich multi functional substances, such as starch, pentaerythritol and two acetal; (2) acid source (dehydration agent) - inorganic acid or acid salts can be generated in situ when heated, such as phosphoric acid, ammonium polyphosphate; (3) the source (foaming agent) - Multi carbon compounds containing nitrogen, such as urea, melamine, dicyandiamide and derivatives.
At present, the commercial phosphorus nitrogen flame retardants in the world are mainly CN- 329, Borg- Warner, Melabis. CN-329 is suitable for PP, which is stable at PP processing temperature and has good electrical properties. When the addition amount is 30%, the oxygen index of the material is up to 34. It is shown that CN- 329 is a good PP flame retardant. It can be seen from the molecular that Melabis has rich acid source and carbon source, which improves the ratio of acid source, carbon source and gas source, and makes Melabis's hygroscopicity much lower than that of CN- 329. It is an excellent flame retardant.
As for the flame retardant efficiency of phosphorus nitrogen flame retardant, the expanded graphite is "incomparable"". In combination with other phosphorus flame retardants, the flame retardant polyolefin plastics can easily reach the flame retardant grade of V0. In addition, the expanded graphite is rich in source and low in price. The main problem is that the expanded graphite has obvious flame retardant effect, it must be about 80 mesh products, the products of its appearance is really difficult to compliment.
Application of intumescent flame retardants in fibers and fabrics mainly through two ways, one is the preparation of flame retardant finishing liquid, etc. by coating finishing to the surface of the fabric, natural fiber mostly by this method; two is the intumescent flame retardant as a comonomer into polymers, mostly used for flame retardant synthetic fiber.
The synthesis of an intumescent flame retardant with acid source, carbon source and gas source is a hot topic in the field of flame retardant research. In addition, improving the thermal stability of intumescent flame retardants and meeting the needs of high temperature processing of polymers is also the future direction of intumescent flame retardants.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
CFRs, chlorinated flame retardant general name, the main types of SCCP, PCB, TCBPA, etc.; chlorine plasticizer, chlorine plasticizer general name, mainly including chlorinated paraffin (SCCP, MCCP), five methyl stearate (MPCS) and so on.
Because of its low price, chlorinated flame retardants are still widely used as flame retardants for unsaturated resins. Chlorinated paraffin chloride content was highest in flame retardant industry important, due to poor thermal stability, only suitable for processing the composite temperature below 200 DEG C, chlorinated alicyclic and four chloro two formic acid anhydride, high thermal stability, commonly used as a flame retardant unsaturated resin.
Flame retardant mechanism of organic chlorine and organic bromine flame retardants are similar, but not as efficient as brominated flame retardants, usually with with antimony oxide using chlorendic anhydride (HET acid) is a reactive flame retardant epoxy chloropropane, also can be used as reaction monomers to make transparent chlorinated flame retardant resin. Chlorinated paraffin is the main variety of chlorine series flame retardants.
According to the chlorine content can be divided into 50-70 varieties. At present, chlorinated paraffin is mainly made of No. 70, and chlorinated paraffin has both flame retardant and toughening functions. The synergistic effect of chlorine antimony is very obvious. When the chlorine content in the resin is more than 10% and the ratio of SB:CL is 1:2, this coordination will produce the best synergistic effect.
Chlorinated flame retardants are mainly chlorinated paraffins with high chlorine content. At present, China is mainly chlorine wax -52 and chlorine wax -40, and the excellent chlorine wax -70 only accounts for about 30% of the production capacity of chlorine based flame retardants. At present, the flame retardants of unsaturated resins are developing towards pollution-free, high purity, high thermal stability and high chlorine content.
Therefore, China should speed up the pace of development of chlorinated wax -70, using environmentally friendly water phase process to produce chlorine wax -70. In addition, the reaction has been widely used for the new type of high performance chlorinated flame retardants, such as phthalic anhydride four chloro two, four chloro bisphenol A, hexachloro cyclopentene and limonene, double (hexachlorocyclopentadiane) cyclooctane, perchloro cyclopent decane, four chloro phthalic anhydride and chlorendic acid should speed up the development of.
Chlorine flame retardants and brominated flame retardants and halogen halogen flame retardant, the environmental damage is mainly manifested in: the immune system toxicity effect on the endocrine system, influence on reproductive and developmental toxicity (carcinogenic effects, other mental and psychological disorders), the majority of halide belongs to environmental hormones.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
Intumescent flame retardant, intumescent flame retardant, it does not contain halogen, nor with antimony oxide as a synergistic agent, containing this kind of flame retardant polymer is heated, the surface can generate a uniform layer of carbon foam layer, to heat and oxygen, and smoke suppression effect, and prevent the melting drop phenomenon, so it has good flame retardant properties.
Phosphorus nitrogel flame retardant system mainly consists of three parts: (1) carbon source (charring agent) for carbon rich multi functional substances, such as starch, pentaerythritol and two acetal; (2) acid source (dehydration agent) - inorganic acid or acid salts can be generated in situ when heated, such as phosphoric acid, ammonium polyphosphate; (3) the source (foaming agent) - Multi carbon compounds containing nitrogen, such as urea, melamine, dicyandiamide and derivatives.
At present, the commercial phosphorus nitrogen flame retardants in the world are mainly CN- 329, Borg- Warner, Melabis. CN-329 is suitable for PP, which is stable at PP processing temperature and has good electrical properties. When the addition amount is 30%, the oxygen index of the material is up to 34. It is shown that CN- 329 is a good PP flame retardant. It can be seen from the molecular that Melabis has rich acid source and carbon source, which improves the ratio of acid source, carbon source and gas source, and makes Melabis's hygroscopicity much lower than that of CN- 329. It is an excellent flame retardant.
As for the flame retardant efficiency of phosphorus nitrogen flame retardant, the expanded graphite is "incomparable"". In combination with other phosphorus flame retardants, the flame retardant polyolefin plastics can easily reach the flame retardant grade of V0. In addition, the expanded graphite is rich in source and low in price. The main problem is that the expanded graphite has obvious flame retardant effect, it must be about 80 mesh products, the products of its appearance is really difficult to compliment.
Application of intumescent flame retardants in fibers and fabrics mainly through two ways, one is the preparation of flame retardant finishing liquid, etc. by coating finishing to the surface of the fabric, natural fiber mostly by this method; two is the intumescent flame retardant as a comonomer into polymers, mostly used for flame retardant synthetic fiber.
The synthesis of an intumescent flame retardant with acid source, carbon source and gas source is a hot topic in the field of flame retardant research. In addition, improving the thermal stability of intumescent flame retardants and meeting the needs of high temperature processing of polymers is also the future direction of intumescent flame retardants.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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