News Details
Flame retardant application
2017-10-6 11:27:39
Flame retardant application
Aluminum hydroxide and magnesium hydroxide are the main forces in inorganic flame retardants, especially when they are promoted in certain fields. Because of the large amount of inorganic flame retardants need to add, in some special cases flame retardant applications will be more than the amount of the polymer itself, therefore, is bound to a very large impact on physical and mechanical properties of the polymer, which requires to deal with inorganic flame retardants, namely particle, surface activation.
The aim of the microparticle is to disperse and disperse the polymer in the polymer, which can be used as a flame retardant in the body phase. The experiment proves that to meet the same flame retardant standard, the particle size can be reduced appropriately. In addition, the surface activation is to make inorganic flame retardants compatible with high polymers so as to reduce the mechanical strength of the polymer due to the addition of a large number of inorganic flame retardants. Recently some articles about flame retardant advantage of inorganic nanometer particle, we believe that working experience, the add of the nanoparticles may be to improve the mechanical strength is good, but not have much influence on flame retardant performance.
For flame retardant mechanism of inorganic flame retardant is through thermal decomposition to release water vapor to reduce the system temperature, water vapor and dilute the combustible gases at the same time to achieve flame retardant effect, it is the amount of water vapor to determine its flame retardant effect, therefore is related to the amount of flame retardant, has nothing to do with whether flame retardant nanoparticles, in general the size distribution of inorganic flame retardants in between 2 mu mu m m5 is sufficient.
Expansion type flame retardant is in recent years, the development of flame retardants of phosphorus and nitrogen as the main, with this kind of flame retardant when heated, surface can form a layer of dense foam carbon layer, insulation, oxygen, smoke suppression and can prevent the drop again, has a good flame retardant performance.
Since 1992, there have been reports of successful studies in China. Since 1992, several research units have been engaged in this development, but no production reports of industrial scale have been reported.
Trixylyl Phosphate(TXP) Use
Phosphate Trisphenylene Phosphate Is Low, Resistant To Hydrolysis, Good Flame Retardant Can Be Used As Vinyl Resin, Cellulose Resin, Natural And Synthetic Rubber Plasticizer, Low Volatility, Good Water Resistance, Flame Retardant. Trichenylene Phosphate Use For Use In Combustible Turbine Oils, With Good Flame Resistance And Good Thermal Oxidation Safety, Good Lubricity, Extreme Pressure Antiwear Additives For Lubricants, Thickeners. Also Used For Fire-Resistant Turbine Oil, With Good Thermal Oxidation Stability, Lubricity, As A Lubricant Anti-Wear Additives, Plasticizers, But Also For Flame Retardant, Wear-Resistant, Resistant To The Mold Of The Cable, Ethylene Conveyor Belt, Artificial Leather, Foam, Flooring Materials, But Also In Metallurgy, Electricity, Mechanical Engineering And Other Aspects As A Fire-Resistant Hydraulic Oil.
There may be two reasons for the lack of scale production: one is that the inorganic acid that has not yet been reflected in the product is reflected in the surface of the flame retardant products. Another is n p expansion type flame retardant is some synthetic macromolecular compounds, the last step is solid phase reaction and its mass transfer, heat transfer process is too complicated and industrialization has the certain difficulty. Finally on inorganic flame retardants to be sure, always someone will antimony trioxide to this category, but strictly speaking, antimony trioxide itself is not flame retardant, it's just share of effect and halogen flame retardant agent.
Nitrogen - containing flame retardants can be decomposed when heated, and have effects of heat absorption, cooling and dilution. Nitrogen flame retardant melamine and its derivatives and related heterocyclic compound, melamine, melamine phosphate, etc., because of its chemical properties similar to those of nylon, so it is better than containing halogen flame retardants and red phosphorus is superior.
Melamine itself makes the nylon mixture to the v-o level. The flame retardant is very effective with all kinds of halogen derivatives, metal oxides, certain organic phosphoric acid or alkali metals, alkaline earth metal salts. The Melapur2o0 (melamine) of nylon 66, used for glass enhancement, was added to reduce the thermal stability of polyphthalamide, so it was necessary to pay attention to temperature control when squeezing the model. Unlike halogen additives and red phosphorus, nitrogen compounds cause polyamide to drop.
The flame retardants used in epoxy resin, polyurethane, flame retardant polyolefin and nylon material, has excellent thermal stability box of good compatibility with polymer, because of its bonding properties similar to polyamide, making it especially suitable for all kinds of flame retardant polyamide.
Phosphonate flame retardant is a kind of flame retardant which has a promising future. Because of the c-p bond in the phosphonates, the stability is very good, and it has very good water resistance and solvent resistance. The foreign phosphonate products include: Pyrovatex is n-hydroxymethylphenylphosphonate, Antiblaze is cyclophosphonates.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Aluminum hydroxide and magnesium hydroxide are the main forces in inorganic flame retardants, especially when they are promoted in certain fields. Because of the large amount of inorganic flame retardants need to add, in some special cases flame retardant applications will be more than the amount of the polymer itself, therefore, is bound to a very large impact on physical and mechanical properties of the polymer, which requires to deal with inorganic flame retardants, namely particle, surface activation.
The aim of the microparticle is to disperse and disperse the polymer in the polymer, which can be used as a flame retardant in the body phase. The experiment proves that to meet the same flame retardant standard, the particle size can be reduced appropriately. In addition, the surface activation is to make inorganic flame retardants compatible with high polymers so as to reduce the mechanical strength of the polymer due to the addition of a large number of inorganic flame retardants. Recently some articles about flame retardant advantage of inorganic nanometer particle, we believe that working experience, the add of the nanoparticles may be to improve the mechanical strength is good, but not have much influence on flame retardant performance.
For flame retardant mechanism of inorganic flame retardant is through thermal decomposition to release water vapor to reduce the system temperature, water vapor and dilute the combustible gases at the same time to achieve flame retardant effect, it is the amount of water vapor to determine its flame retardant effect, therefore is related to the amount of flame retardant, has nothing to do with whether flame retardant nanoparticles, in general the size distribution of inorganic flame retardants in between 2 mu mu m m5 is sufficient.
Expansion type flame retardant is in recent years, the development of flame retardants of phosphorus and nitrogen as the main, with this kind of flame retardant when heated, surface can form a layer of dense foam carbon layer, insulation, oxygen, smoke suppression and can prevent the drop again, has a good flame retardant performance.
Since 1992, there have been reports of successful studies in China. Since 1992, several research units have been engaged in this development, but no production reports of industrial scale have been reported.
Trixylyl Phosphate(TXP) Use
Phosphate Trisphenylene Phosphate Is Low, Resistant To Hydrolysis, Good Flame Retardant Can Be Used As Vinyl Resin, Cellulose Resin, Natural And Synthetic Rubber Plasticizer, Low Volatility, Good Water Resistance, Flame Retardant. Trichenylene Phosphate Use For Use In Combustible Turbine Oils, With Good Flame Resistance And Good Thermal Oxidation Safety, Good Lubricity, Extreme Pressure Antiwear Additives For Lubricants, Thickeners. Also Used For Fire-Resistant Turbine Oil, With Good Thermal Oxidation Stability, Lubricity, As A Lubricant Anti-Wear Additives, Plasticizers, But Also For Flame Retardant, Wear-Resistant, Resistant To The Mold Of The Cable, Ethylene Conveyor Belt, Artificial Leather, Foam, Flooring Materials, But Also In Metallurgy, Electricity, Mechanical Engineering And Other Aspects As A Fire-Resistant Hydraulic Oil.
There may be two reasons for the lack of scale production: one is that the inorganic acid that has not yet been reflected in the product is reflected in the surface of the flame retardant products. Another is n p expansion type flame retardant is some synthetic macromolecular compounds, the last step is solid phase reaction and its mass transfer, heat transfer process is too complicated and industrialization has the certain difficulty. Finally on inorganic flame retardants to be sure, always someone will antimony trioxide to this category, but strictly speaking, antimony trioxide itself is not flame retardant, it's just share of effect and halogen flame retardant agent.
Nitrogen - containing flame retardants can be decomposed when heated, and have effects of heat absorption, cooling and dilution. Nitrogen flame retardant melamine and its derivatives and related heterocyclic compound, melamine, melamine phosphate, etc., because of its chemical properties similar to those of nylon, so it is better than containing halogen flame retardants and red phosphorus is superior.
Melamine itself makes the nylon mixture to the v-o level. The flame retardant is very effective with all kinds of halogen derivatives, metal oxides, certain organic phosphoric acid or alkali metals, alkaline earth metal salts. The Melapur2o0 (melamine) of nylon 66, used for glass enhancement, was added to reduce the thermal stability of polyphthalamide, so it was necessary to pay attention to temperature control when squeezing the model. Unlike halogen additives and red phosphorus, nitrogen compounds cause polyamide to drop.
The flame retardants used in epoxy resin, polyurethane, flame retardant polyolefin and nylon material, has excellent thermal stability box of good compatibility with polymer, because of its bonding properties similar to polyamide, making it especially suitable for all kinds of flame retardant polyamide.
Phosphonate flame retardant is a kind of flame retardant which has a promising future. Because of the c-p bond in the phosphonates, the stability is very good, and it has very good water resistance and solvent resistance. The foreign phosphonate products include: Pyrovatex is n-hydroxymethylphenylphosphonate, Antiblaze is cyclophosphonates.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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