News Details
Epoxy resin flame retardant for electronic and electrical appliances
2017-11-5 22:57:42
Epoxy resin flame retardant for electronic and electrical appliances
In recent years, the production and consumption situation of China's flame retardants continued to develop, with an average annual consumption growth rate of more than 20%. Since 2002, the consumption of domestic flame retardants has risen sharply. The increasing market share mainly comes from 2 aspects: electronic and electrical appliances and automobile market. All countries in the world pay more and more attention to the flame retardant performance of electronic and electrical equipment. China is no exception, especially the export of electronic and electrical products in China is more stringent.
The synthesis of epoxy resin flame retardant for electronic and electronic equipment is a typical unbalanced polycondensation reaction, usually under the catalysis of heavy metal chloride, under high temperature and good stirring conditions. In the polycondensation process, the system becomes more and more viscous, the residual reaction group gradually decreases, the reaction rate slows down gradually, meanwhile, the escape of HCl becomes difficult until the reaction terminates. Inert gas is usually used in the reaction to prevent the oxidation reaction of the polymerization system. Meanwhile, the HCl produced in the reaction is brought out.
When the reaction is approaching, the reaction temperature should be increased so that the system is not too viscous, so that the residual HCl can be removed by vacuuming. The main factors affecting polycondensation reaction are reaction time, reaction temperature, system vacuum, catalyst dosage and monomer ratio. The effects of reaction time, reaction temperature, amount of catalyst and monomer ratio on the intrinsic viscosity of polymers were studied. Because the reaction has obvious non-equilibrium reaction characteristics, the influence of vacuum degree is not considered in this paper.
By orthogonal experiment, the conclusion is drawn that the reaction time has the greatest influence on the intrinsic viscosity of the polymer. The optimum reaction conditions of PDPPP are as follows: the molar ratio of the reaction monomer and other substances, the amount of catalyst is 0.01:1, the reaction time is 5h. The highest reaction temperature is controlled at about 230.
The results of elemental analysis show that the content of each element is very close to the theoretical value. Electronic map with 1HNMR epoxy resin flame retardant PDPPP can see, originally located in the ODOPB spectrum of 9.32 to 9.51 of the peak, the ODOPB is the -OH H displacement does not already exist in the 1HNMR pattern in PDPPP. It can be concluded that the polymerization of 2 monomers, ODOPB and benzoyl two chloride, has occurred.
Because the chemical environment around H in ODOPB and PDPPP is very similar, the structure of PDPPP should be further analyzed by mass spectrometry. In the mass spectrum analysis of PDPPP, m/z=447 is the characteristic peak of MH+, M represents the repeating unit of polymer PDPPP, the characteristic peak expressed by m/z=753, and m/z=893 represents the characteristic peak of M2H+. Through the above analysis. The target product PDPPP was successfully synthesized.
Using epoxy resin for flame retardant epoxy resin and unsaturated polyester has good flame retardant electrical, electronic and electrical appliances only a small amount of epoxy resin for flame retardant, so that the mixed system of LOI more than 28, when the electronic appliance with epoxy resin flame retardant was 8% (P 1.11%), 2 the mixed system of LOl can reach more than 35.
The flame retardant of condensed phase of phosphorus based flame retardant is realized by carbonization. Some studies have shown that there is a linear relationship between residual carbon content and oxygen index for halogen free polymer materials. The formation of carbon layers can reduce the formation of volatiles and reduce heat transfer. So as to improve the flame retardancy.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
Appearance: Colorless Viscous Liquid
Melting Point: -64 ℃
Boiling Point: 315 ℃
Density: 1.512
Flash Point: 249 ℃
Refractive Index: N20 / D 1.503
Specific Gravity 1.490-1.510
Chlorine Content Of 49.5% ± 0.5
Color Value Max 100
Water Content 0.10% Max
Viscosity (25 ° C) 1500-1800 CPS
Acidity (Mg KOH / G 0.10 Max
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
Flame retardant epoxy resin for electronic phosphorus content of the synthesized high (PDPPP) the optimum reaction conditions were as follows: monomer molar ratio, the amount of catalyst is 0.01:1, the reaction time is 5h, the maximum reaction temperature is controlled at about 230 DEG C. PDPPP has good flame retardant for epoxy resin and unsaturated polyester, and only a small amount of PDPPP (2%, P 0.28%) you can make 2 kinds of hybrid system LOI of more than 28, when the amount of PDPPP reached 8% (P 1.11%), 2 hybrid system LOI can reach more than 35.
PDPPP can improve the UL-94 grade of epoxy and unsaturated polyester, especially unsaturated polyester system. Using only 2% PDPPP, the unsaturated polyester can reach the V-O grade of UL-94.
Comparison of various flame retardants currently used in the market, the application of EPFR-200A in glass fiber reinforced PA66 and EPFR-300A applied to glass fiber reinforced PBT has the following advantages: high flame retardant properties; processing properties of the good; the excellent color stability and excellent mechanical properties; thermal stability; the higher the reasonable price.
Melamine cyanurate is a halogen-free and environmentally friendly flame retardant containing nitrogen, is economical, efficient, electrical properties and excellent mechanical properties, no color, low smoke, low corrosion, low toxicity, safe for users, and good environmental compatibility, and has good thermal stability, very suitable for material processing.
Studies in Japan, the United States and Europe have shown that brominated flame retardants retain their mechanical properties and flame retardant properties after several cycles of recycling and reuse. The risk assessment report also showed that the electrical and electronic equipment containing flame retardants can use environmentally friendly manner, can reach WEEE (waste electrical and electronic equipment) the requirements of the directive and the EU Emission regulations.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
In recent years, the production and consumption situation of China's flame retardants continued to develop, with an average annual consumption growth rate of more than 20%. Since 2002, the consumption of domestic flame retardants has risen sharply. The increasing market share mainly comes from 2 aspects: electronic and electrical appliances and automobile market. All countries in the world pay more and more attention to the flame retardant performance of electronic and electrical equipment. China is no exception, especially the export of electronic and electrical products in China is more stringent.
The synthesis of epoxy resin flame retardant for electronic and electronic equipment is a typical unbalanced polycondensation reaction, usually under the catalysis of heavy metal chloride, under high temperature and good stirring conditions. In the polycondensation process, the system becomes more and more viscous, the residual reaction group gradually decreases, the reaction rate slows down gradually, meanwhile, the escape of HCl becomes difficult until the reaction terminates. Inert gas is usually used in the reaction to prevent the oxidation reaction of the polymerization system. Meanwhile, the HCl produced in the reaction is brought out.
When the reaction is approaching, the reaction temperature should be increased so that the system is not too viscous, so that the residual HCl can be removed by vacuuming. The main factors affecting polycondensation reaction are reaction time, reaction temperature, system vacuum, catalyst dosage and monomer ratio. The effects of reaction time, reaction temperature, amount of catalyst and monomer ratio on the intrinsic viscosity of polymers were studied. Because the reaction has obvious non-equilibrium reaction characteristics, the influence of vacuum degree is not considered in this paper.
By orthogonal experiment, the conclusion is drawn that the reaction time has the greatest influence on the intrinsic viscosity of the polymer. The optimum reaction conditions of PDPPP are as follows: the molar ratio of the reaction monomer and other substances, the amount of catalyst is 0.01:1, the reaction time is 5h. The highest reaction temperature is controlled at about 230.
The results of elemental analysis show that the content of each element is very close to the theoretical value. Electronic map with 1HNMR epoxy resin flame retardant PDPPP can see, originally located in the ODOPB spectrum of 9.32 to 9.51 of the peak, the ODOPB is the -OH H displacement does not already exist in the 1HNMR pattern in PDPPP. It can be concluded that the polymerization of 2 monomers, ODOPB and benzoyl two chloride, has occurred.
Because the chemical environment around H in ODOPB and PDPPP is very similar, the structure of PDPPP should be further analyzed by mass spectrometry. In the mass spectrum analysis of PDPPP, m/z=447 is the characteristic peak of MH+, M represents the repeating unit of polymer PDPPP, the characteristic peak expressed by m/z=753, and m/z=893 represents the characteristic peak of M2H+. Through the above analysis. The target product PDPPP was successfully synthesized.
Using epoxy resin for flame retardant epoxy resin and unsaturated polyester has good flame retardant electrical, electronic and electrical appliances only a small amount of epoxy resin for flame retardant, so that the mixed system of LOI more than 28, when the electronic appliance with epoxy resin flame retardant was 8% (P 1.11%), 2 the mixed system of LOl can reach more than 35.
The flame retardant of condensed phase of phosphorus based flame retardant is realized by carbonization. Some studies have shown that there is a linear relationship between residual carbon content and oxygen index for halogen free polymer materials. The formation of carbon layers can reduce the formation of volatiles and reduce heat transfer. So as to improve the flame retardancy.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
Appearance: Colorless Viscous Liquid
Melting Point: -64 ℃
Boiling Point: 315 ℃
Density: 1.512
Flash Point: 249 ℃
Refractive Index: N20 / D 1.503
Specific Gravity 1.490-1.510
Chlorine Content Of 49.5% ± 0.5
Color Value Max 100
Water Content 0.10% Max
Viscosity (25 ° C) 1500-1800 CPS
Acidity (Mg KOH / G 0.10 Max
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
Flame retardant epoxy resin for electronic phosphorus content of the synthesized high (PDPPP) the optimum reaction conditions were as follows: monomer molar ratio, the amount of catalyst is 0.01:1, the reaction time is 5h, the maximum reaction temperature is controlled at about 230 DEG C. PDPPP has good flame retardant for epoxy resin and unsaturated polyester, and only a small amount of PDPPP (2%, P 0.28%) you can make 2 kinds of hybrid system LOI of more than 28, when the amount of PDPPP reached 8% (P 1.11%), 2 hybrid system LOI can reach more than 35.
PDPPP can improve the UL-94 grade of epoxy and unsaturated polyester, especially unsaturated polyester system. Using only 2% PDPPP, the unsaturated polyester can reach the V-O grade of UL-94.
Comparison of various flame retardants currently used in the market, the application of EPFR-200A in glass fiber reinforced PA66 and EPFR-300A applied to glass fiber reinforced PBT has the following advantages: high flame retardant properties; processing properties of the good; the excellent color stability and excellent mechanical properties; thermal stability; the higher the reasonable price.
Melamine cyanurate is a halogen-free and environmentally friendly flame retardant containing nitrogen, is economical, efficient, electrical properties and excellent mechanical properties, no color, low smoke, low corrosion, low toxicity, safe for users, and good environmental compatibility, and has good thermal stability, very suitable for material processing.
Studies in Japan, the United States and Europe have shown that brominated flame retardants retain their mechanical properties and flame retardant properties after several cycles of recycling and reuse. The risk assessment report also showed that the electrical and electronic equipment containing flame retardants can use environmentally friendly manner, can reach WEEE (waste electrical and electronic equipment) the requirements of the directive and the EU Emission regulations.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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