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Study flame retardants according to the combustion mechanism
2017-9-27 11:32:04
Study flame retardants according to the combustion mechanism
According to study the mechanism of combustion flame retardants, three factors of combustion and the properties of the products in the process of combustion flame retardants in material of combustion process, should have three functions: cool, isolation of oxygen and inhibit decomposition to generate new fuel or dilute fuel, such as flame retardant effect.
Study the flame retardant according to the combustion mechanism: reduce the temperature of the combustion system. Heat capacity of water (specific heat for 1), 1 g of water every 1 ℃ hot need 1 card. Water from the temperature rise to the boiling point to absorb a lot of heat, from boiling to steam, and to absorb a large amount of heat, so water is a kind of heat absorption agent, played a cooling effect. As a result, substances can be decomposed into water during combustion. This substance is a good flame retardant, such as aluminum hydroxide and magnesium hydroxide.
Aluminum hydroxide Al (OH) 3, the decomposition of the flame retardant principle is out of the water, decomposition temperature 203 ℃. Decomposition reaction equations are as follows: 2 al (OH) 3, 203 ℃ Al2O3 + 3 h2o decomposition enthalpy as - 91126 kj/mol, decomposition of 1 mole of aluminum hydroxide need to absorb the quantity of heat of 91126 kj. The chemical binding water of powdery aluminum hydroxide has a mass fraction of 3416%. The dissolved water turns into steam and absorbs heat. So aluminum hydroxide can cool the burning system and act as a flame retardant.
Magnesium hydroxide: its flame retardant mechanism is the same as that of aluminum hydroxide. The decomposition temperature of 332 ℃. Decomposition reaction equations are as follows: Mg (OH) 2, 332 ℃ MgO style + H2O decomposition enthalpy as - 328 calories per gram. Decomposition of water accounted for 31% of magnesium hydroxide. It is a heat-absorbing agent, like aluminum hydroxide, which cools the combustion system and ACTS as a flame retardant.
Study the flame retardant according to the combustion mechanism: the oxygen of the isolated combustion system. In the process of combustion, can decompose the noncombustible gas Combustion system, make the burning oxygen, such material is flame retardants, such as sodium bicarbonate, potassium bicarbonate, magnesium bicarbonate can decompose the carbon dioxide; Dio-metformin and 52-phenyl tetrazole can be decomposed into nitrogen. CO2, N2, these are non-flammable gases, encircling or covering the combustion system, isolating oxygen and acting as a flame retardant.
Study of flame retardants according to the burning mechanism: inhibit the formation of flammable substances. Zinc borate and chlorine compounds under combustion condition, can generate ZnCl2, ZnCl2 is a kind of crosslinking agent, can make the combustible matter into polymerization, thus consumption to reduce the amount of the combustible substance concentration.
Isopropylphenyl Phosphate(IPPP50)
Traits: Colorless Or Light Yellow Transparent Liquid
Density Density (D20) :: 1.168-1.180
Flash Point Flash Point: 220 ℃ MIN
Viscosity Viscosity (25 ° C, CP): 52 - 64
Acid Value (MgKOH / G): 0.1 MAX
Refractive Index Refractive Index (N23): 1.546-1.555
Color Value: ≤ 50
Moisture% Water Content: 0.1% MAX
Phosphate Content: BY8.3-8.5%
Isopropylphenyl Phosphate(IPPP50)Use:
Isopropylphenyl Phosphate, Flame Retardant IPPP50 This Product Is Compatible With Vinyl Chloride, Nitrocellulose, Synthetic Resin And Natural Resin, Etc. Because Of The Above Advantages, Reofos Series In Industrial Production Is Widely Used: PVC Film As Flame Retardant Plasticizer, Reofos Increase In The Amount Of Oxygen Index Increased, Enhanced Flame Retardant. In The Rubber Industry Can Be Used As Chloroprene Rubber And Rubber Flame Retardant Plasticizer; In Other Industries Can Be Used As Lubricants With Extreme Pressure Additives And Digestion Of Cellulose Paint, Resin, Phenol Resin And Other Flame Retardants.
Isopropylphenyl Phosphate, Flame Retardant IPPP50 Use Is Also Applicable To Fabric Coating, Circuit Boards, Flooring, Textiles, PVC, Phenolic Resin And Other Fields.
The material containing halogen, such as decabromodiphenyl ether and chlorinated paraffin, can dissolve the halogen free radicals in the heated state of the rubber. The halogen free radicals can capture the combustible active hydroxyl, which is decomposed by combustion, and can fire or delay the combustion of rubber.
According to the equation, halogen free radical X? It becomes a negative catalyst for the combustion chain reaction. HBr is smaller than HCl, HBr and HO? The reaction rate of the group is greater than that of HCl, so the flame retardancy of the bromide is greater than that of the same kind.
Hydrogen halide antimony and antimony trioxide reaction generated three halide, also can prevent the combustion gas phase formation of combustible material, equation is as follows: 2 HCL + Sb2O3-2 sbocl + H2O 5 sbocl - Sb4O5Cl2 + SbCl3 phosphide burns, can form metaphosphate, metaphosphoric acid at high temperature can aggregate into high poly state again, it is the covering layer of rubber, isolated air and combustible material, stop rubber decomposition and combustion.
Chlorophosphate, which can be decomposed to produce phosphorus chloride (PCl3, PCl5) in the combustion process, has a large vapor density, covering the surface of the flame, which can isolate air and dilute combustible.
Phosphorus trichloride and methanol reaction with dimethyl phosphite, in strong alkali (sodium alcoholate) under the condition of the conjugate addition reaction with acrylamide to 3 - (dimethoxy phosphoryl) propionamide, it hydroxylation reaction with formaldehyde generation flame retardant N - methyl - 3 - (dimethoxy phosphoryl) propionic acid. It can be used for fiber flame retardant, and it can get better results.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
According to study the mechanism of combustion flame retardants, three factors of combustion and the properties of the products in the process of combustion flame retardants in material of combustion process, should have three functions: cool, isolation of oxygen and inhibit decomposition to generate new fuel or dilute fuel, such as flame retardant effect.
Study the flame retardant according to the combustion mechanism: reduce the temperature of the combustion system. Heat capacity of water (specific heat for 1), 1 g of water every 1 ℃ hot need 1 card. Water from the temperature rise to the boiling point to absorb a lot of heat, from boiling to steam, and to absorb a large amount of heat, so water is a kind of heat absorption agent, played a cooling effect. As a result, substances can be decomposed into water during combustion. This substance is a good flame retardant, such as aluminum hydroxide and magnesium hydroxide.
Aluminum hydroxide Al (OH) 3, the decomposition of the flame retardant principle is out of the water, decomposition temperature 203 ℃. Decomposition reaction equations are as follows: 2 al (OH) 3, 203 ℃ Al2O3 + 3 h2o decomposition enthalpy as - 91126 kj/mol, decomposition of 1 mole of aluminum hydroxide need to absorb the quantity of heat of 91126 kj. The chemical binding water of powdery aluminum hydroxide has a mass fraction of 3416%. The dissolved water turns into steam and absorbs heat. So aluminum hydroxide can cool the burning system and act as a flame retardant.
Magnesium hydroxide: its flame retardant mechanism is the same as that of aluminum hydroxide. The decomposition temperature of 332 ℃. Decomposition reaction equations are as follows: Mg (OH) 2, 332 ℃ MgO style + H2O decomposition enthalpy as - 328 calories per gram. Decomposition of water accounted for 31% of magnesium hydroxide. It is a heat-absorbing agent, like aluminum hydroxide, which cools the combustion system and ACTS as a flame retardant.
Study the flame retardant according to the combustion mechanism: the oxygen of the isolated combustion system. In the process of combustion, can decompose the noncombustible gas Combustion system, make the burning oxygen, such material is flame retardants, such as sodium bicarbonate, potassium bicarbonate, magnesium bicarbonate can decompose the carbon dioxide; Dio-metformin and 52-phenyl tetrazole can be decomposed into nitrogen. CO2, N2, these are non-flammable gases, encircling or covering the combustion system, isolating oxygen and acting as a flame retardant.
Study of flame retardants according to the burning mechanism: inhibit the formation of flammable substances. Zinc borate and chlorine compounds under combustion condition, can generate ZnCl2, ZnCl2 is a kind of crosslinking agent, can make the combustible matter into polymerization, thus consumption to reduce the amount of the combustible substance concentration.
Isopropylphenyl Phosphate(IPPP50)
Traits: Colorless Or Light Yellow Transparent Liquid
Density Density (D20) :: 1.168-1.180
Flash Point Flash Point: 220 ℃ MIN
Viscosity Viscosity (25 ° C, CP): 52 - 64
Acid Value (MgKOH / G): 0.1 MAX
Refractive Index Refractive Index (N23): 1.546-1.555
Color Value: ≤ 50
Moisture% Water Content: 0.1% MAX
Phosphate Content: BY8.3-8.5%
Isopropylphenyl Phosphate(IPPP50)Use:
Isopropylphenyl Phosphate, Flame Retardant IPPP50 This Product Is Compatible With Vinyl Chloride, Nitrocellulose, Synthetic Resin And Natural Resin, Etc. Because Of The Above Advantages, Reofos Series In Industrial Production Is Widely Used: PVC Film As Flame Retardant Plasticizer, Reofos Increase In The Amount Of Oxygen Index Increased, Enhanced Flame Retardant. In The Rubber Industry Can Be Used As Chloroprene Rubber And Rubber Flame Retardant Plasticizer; In Other Industries Can Be Used As Lubricants With Extreme Pressure Additives And Digestion Of Cellulose Paint, Resin, Phenol Resin And Other Flame Retardants.
Isopropylphenyl Phosphate, Flame Retardant IPPP50 Use Is Also Applicable To Fabric Coating, Circuit Boards, Flooring, Textiles, PVC, Phenolic Resin And Other Fields.
The material containing halogen, such as decabromodiphenyl ether and chlorinated paraffin, can dissolve the halogen free radicals in the heated state of the rubber. The halogen free radicals can capture the combustible active hydroxyl, which is decomposed by combustion, and can fire or delay the combustion of rubber.
According to the equation, halogen free radical X? It becomes a negative catalyst for the combustion chain reaction. HBr is smaller than HCl, HBr and HO? The reaction rate of the group is greater than that of HCl, so the flame retardancy of the bromide is greater than that of the same kind.
Hydrogen halide antimony and antimony trioxide reaction generated three halide, also can prevent the combustion gas phase formation of combustible material, equation is as follows: 2 HCL + Sb2O3-2 sbocl + H2O 5 sbocl - Sb4O5Cl2 + SbCl3 phosphide burns, can form metaphosphate, metaphosphoric acid at high temperature can aggregate into high poly state again, it is the covering layer of rubber, isolated air and combustible material, stop rubber decomposition and combustion.
Chlorophosphate, which can be decomposed to produce phosphorus chloride (PCl3, PCl5) in the combustion process, has a large vapor density, covering the surface of the flame, which can isolate air and dilute combustible.
Phosphorus trichloride and methanol reaction with dimethyl phosphite, in strong alkali (sodium alcoholate) under the condition of the conjugate addition reaction with acrylamide to 3 - (dimethoxy phosphoryl) propionamide, it hydroxylation reaction with formaldehyde generation flame retardant N - methyl - 3 - (dimethoxy phosphoryl) propionic acid. It can be used for fiber flame retardant, and it can get better results.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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