News Details
Epoxy resin phosphorous flame retardant
2017-12-5 10:52:16
Epoxy resin phosphorous flame retardant
Epoxy resin has excellent chemical stability, dimensional stability, electrical insulation and corrosion resistance. It can be widely applied in various fields such as chemical industry, light industry, machinery, electronics and aerospace. However, the oxygen index of general epoxy resin is only 19.8, which is a flammable material. Therefore, developing flame retardant and halogen-free phosphorus containing epoxy resin and epoxy resin phosphorus flame retardant is an important topic in the field of electronic chemical materials.
In the epoxy resin molecular skeleton, phosphorus content is more than 1%, and with the use of specific curing agent, it can make the curing system flame retardancy meet the international standard UL94V-0 of electrical products. The most commonly used method to improve the flame retardancy of epoxy resin is to add a certain flame retardant, which makes the epoxy resin have a flammability and self extinguishing property. At present, the commonly used flame retardant epoxy resin is a reactive flame retardant, four brominated bisphenol A and other halogen - containing flame retardants.
The use of brominated flame retardants has been greatly impacted since the European Union issued the directive on the restriction of harmful substances (RoHS) in February 2003. At the same time, most halogen - free flame retardant epoxy resins are used as phosphorus - based flame retardants which do not produce harmful gases during combustion.
But the flame retardant is liquid at room temperature, a large amount of smoke and toxic, can leak out of the waste; and the flame retardant in the use process, there is a possibility of pollution protection of electronic components, will reduce the EMC moisture resistance and machinability; red phosphorus class flame retardant in molding will produce red phosphorus decomposition gases, they are used and discarded after all to the ecological environment and human environment have adverse effects.
Epoxy resin phosphorous flame retardant used for epoxy resin unsaturated polyester. In recent decades, with the development of science and technology, polymer materials such as plastics, rubber and synthetic fibers have been widely applied in many fields such as aerospace engineering, transportation, electronic and electrical appliances, and daily necessities.
But most polymers are flammable and flammable. Some of them also produce a lot of smoke and toxic gases, which cause harm to the environment, cause huge loss of social wealth, and pose a great threat to people's life and safety. In the fire incident, a large proportion of the fire was caused by the ignition of polymer materials. Therefore, the development of epoxy resin phosphorous flame retardants for polymer materials, especially environmentally friendly halogen free flame retardants, is the research focus of polymer flame retardancy in various countries.
Tris(2-chloroisopropyl)Phosphate(TCPP)
Packing: NW 250KG / galvanized iron (a small cabinet to play prop 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons), or 23 tons ISOTANK.
The product output: 100 tons / month
Shipping Port: China Shang Hai
Price offer is valid: 15 days
Jincang time: 15 days (commodity inspection)
Export rights: the right to import and export company.
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.
After entering 1990s, flame retardant technology is undergoing a new stage of development, in addition to the flame retardant flame propagation speed, meet the basic requirements of low smoke, low toxicity, high efficiency, but also needs to satisfy the introduction, less content of flame retardant polymer materials will not lead to the original performance requirements such as excessive deterioration.
Therefore, in recent years, high efficiency, low smoke, low toxicity, dustless or less dust constitute the key research topics in the field of flame retardants, and also the main direction of the development of flame retardants in the world. The synthesis of 1 kinds of high phosphorus halogen-free flame retardants (PDPPP), and the new flame retardant epoxy resin, added to the eight flame retardancy of unsaturated fat and are discussed in this paper.
The main raw materials: 9 10-, two -9 -10 hydrogen oxa phosphaphenanthrene (DOPO) and Phenylphosphonic chloride two, industrial products, before use after purification; pure analysis, benzoquinone, are chemical reagent factory products; epoxy resin E-44, the Ministry of Chemical Industry Chenguang Research Institute of chemical factory two, light yellow liquid the value of 0.41 ~ 0.47mol/100g ring oxygen, the softening point of 12 to 20 DEG C; unsaturated polyester 191, Changzhou 253 building materials factory, light yellow transparent liquid, the acid value of KOH:28 ~ 36mg/g, the viscosity of 0.25 ~ 0.45Pa s.
Synthesis of flame retardants (PDPPP): synthesis of ODOPB according to the method provided by the literature. The synthesis of PDPPP is followed by the conditions of the previous synthesis of PSPPP. The phosphonyl chloride 0.19mol, ODOPB0.185mol and catalyst are added in the 250mL reaction bottle with nitrogen import and export and agitator. Through nitrogen, heating up heating, maintaining the temperature of 160 C reaction 1.5h, and then increasing the temperature to 220 degrees C, and continue to react to 2H. The residual HCl gas in the system was removed from the vacuum system at the later stage. The obtained products are light yellow, and the mass of molecular weight is 3000~8900, and the melting point is 195~204.
The use of high efficiency flame retardant has the best range, not the more the dosage, the better the flame retardancy effect. The addition of high efficiency flame retardant is low. How to make the flame retardant better dispersing is the key to the flame retardancy. The high efficiency flame retardant is made into a flame retardant masterbatch, which can make the flame retardant achieve better dispersing effect.
Different equipment, different process conditions and combinations have great influence on halogen-free flame retardancy and flame retardancy.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Epoxy resin has excellent chemical stability, dimensional stability, electrical insulation and corrosion resistance. It can be widely applied in various fields such as chemical industry, light industry, machinery, electronics and aerospace. However, the oxygen index of general epoxy resin is only 19.8, which is a flammable material. Therefore, developing flame retardant and halogen-free phosphorus containing epoxy resin and epoxy resin phosphorus flame retardant is an important topic in the field of electronic chemical materials.
In the epoxy resin molecular skeleton, phosphorus content is more than 1%, and with the use of specific curing agent, it can make the curing system flame retardancy meet the international standard UL94V-0 of electrical products. The most commonly used method to improve the flame retardancy of epoxy resin is to add a certain flame retardant, which makes the epoxy resin have a flammability and self extinguishing property. At present, the commonly used flame retardant epoxy resin is a reactive flame retardant, four brominated bisphenol A and other halogen - containing flame retardants.
The use of brominated flame retardants has been greatly impacted since the European Union issued the directive on the restriction of harmful substances (RoHS) in February 2003. At the same time, most halogen - free flame retardant epoxy resins are used as phosphorus - based flame retardants which do not produce harmful gases during combustion.
But the flame retardant is liquid at room temperature, a large amount of smoke and toxic, can leak out of the waste; and the flame retardant in the use process, there is a possibility of pollution protection of electronic components, will reduce the EMC moisture resistance and machinability; red phosphorus class flame retardant in molding will produce red phosphorus decomposition gases, they are used and discarded after all to the ecological environment and human environment have adverse effects.
Epoxy resin phosphorous flame retardant used for epoxy resin unsaturated polyester. In recent decades, with the development of science and technology, polymer materials such as plastics, rubber and synthetic fibers have been widely applied in many fields such as aerospace engineering, transportation, electronic and electrical appliances, and daily necessities.
But most polymers are flammable and flammable. Some of them also produce a lot of smoke and toxic gases, which cause harm to the environment, cause huge loss of social wealth, and pose a great threat to people's life and safety. In the fire incident, a large proportion of the fire was caused by the ignition of polymer materials. Therefore, the development of epoxy resin phosphorous flame retardants for polymer materials, especially environmentally friendly halogen free flame retardants, is the research focus of polymer flame retardancy in various countries.
Tris(2-chloroisopropyl)Phosphate(TCPP)
Packing: NW 250KG / galvanized iron (a small cabinet to play prop 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons), or 23 tons ISOTANK.
The product output: 100 tons / month
Shipping Port: China Shang Hai
Price offer is valid: 15 days
Jincang time: 15 days (commodity inspection)
Export rights: the right to import and export company.
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.
After entering 1990s, flame retardant technology is undergoing a new stage of development, in addition to the flame retardant flame propagation speed, meet the basic requirements of low smoke, low toxicity, high efficiency, but also needs to satisfy the introduction, less content of flame retardant polymer materials will not lead to the original performance requirements such as excessive deterioration.
Therefore, in recent years, high efficiency, low smoke, low toxicity, dustless or less dust constitute the key research topics in the field of flame retardants, and also the main direction of the development of flame retardants in the world. The synthesis of 1 kinds of high phosphorus halogen-free flame retardants (PDPPP), and the new flame retardant epoxy resin, added to the eight flame retardancy of unsaturated fat and are discussed in this paper.
The main raw materials: 9 10-, two -9 -10 hydrogen oxa phosphaphenanthrene (DOPO) and Phenylphosphonic chloride two, industrial products, before use after purification; pure analysis, benzoquinone, are chemical reagent factory products; epoxy resin E-44, the Ministry of Chemical Industry Chenguang Research Institute of chemical factory two, light yellow liquid the value of 0.41 ~ 0.47mol/100g ring oxygen, the softening point of 12 to 20 DEG C; unsaturated polyester 191, Changzhou 253 building materials factory, light yellow transparent liquid, the acid value of KOH:28 ~ 36mg/g, the viscosity of 0.25 ~ 0.45Pa s.
Synthesis of flame retardants (PDPPP): synthesis of ODOPB according to the method provided by the literature. The synthesis of PDPPP is followed by the conditions of the previous synthesis of PSPPP. The phosphonyl chloride 0.19mol, ODOPB0.185mol and catalyst are added in the 250mL reaction bottle with nitrogen import and export and agitator. Through nitrogen, heating up heating, maintaining the temperature of 160 C reaction 1.5h, and then increasing the temperature to 220 degrees C, and continue to react to 2H. The residual HCl gas in the system was removed from the vacuum system at the later stage. The obtained products are light yellow, and the mass of molecular weight is 3000~8900, and the melting point is 195~204.
The use of high efficiency flame retardant has the best range, not the more the dosage, the better the flame retardancy effect. The addition of high efficiency flame retardant is low. How to make the flame retardant better dispersing is the key to the flame retardancy. The high efficiency flame retardant is made into a flame retardant masterbatch, which can make the flame retardant achieve better dispersing effect.
Different equipment, different process conditions and combinations have great influence on halogen-free flame retardancy and flame retardancy.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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