News Details
Polyamide flame retardant
2017-9-29 11:42:02
Polyamide flame retardant
Nylon, polyamide (PA), is on the main chain containing amide groups (NHCO -) polymer compound, is an important engineering resin, in the five common engineering plastics (PA, PC, POM, PBT/PET, PPO), are widely used in the field of daily life and industry.
According to the number of carbon atoms in the chain section of polyamide, PA6, PA11, PAl2, PA46, PA610, PA612, PAl010, etc. Among them PA6, PA66 is the most widely used and the most productive. Nylon has high mechanical strength, high melting point, wear resistance, oil resistant and general organic solvent, excellent heat resistance.
Because of the amide base on the molecular structure, it has good flame retardation. According to ASTM D635 test, the type of self-extinguishing. But as a widely used material, nylon mostly faces a more demanding environment, such as high humidity, high temperature, high voltage, etc. Therefore, polyamide flame retardants have become a crucial factor in many occasions, especially in electrical applications such as terminal posts, sockets, switches, etc. Therefore, it is necessary to further improve the flame retardancy of nylon.
The flame retardant methods of polyamide flame retardant are mainly: (1) adding flame retardant additives to the composite process; The flame retardant is added to the polyamide by means of mechanical mixing. If the APP/talc of a certain proportion is added to PA26, it can obtain the flame retardant PA26 of UL94 V20, which has the advantages of convenient use and wide application, but has a great influence on the application performance of the polymer. The main additives used for polyamide are double (hexachlorocyclopentadiene) cyclooctane, ammonium polyphosphate and diphenyl ether.
The main method of nylon flame retardant is to use additive flame retardant. (2) grafting or bonding of a flame retardant group on a polymer chain or surface; The flame retardant is used as a reaction monomer to participate in the reaction, and it is combined with the main chain or side chain of polyamide to make the polyamide itself contain flame retardant components.
It is characterized by good stability, small toxicity, small influence on the use of materials, and long-lasting flame retardancy, which is an ideal method. However, the operation and processing technology is complex, and in practical application, it is less common than additive flame retardant method. The reactive flame retardants used for polyamides have two compounds (hydroxyethyl) methoxyphosphine, 1, 3, 62, 3 (4, 62 diaminamide 222 sulfuric triazine), and tripolycyanate mixtures, etc. (3) co-polymerization with flame retardant monomer (lactam, diamine or dibasic acid);
Isopropylphenyl Phosphate(IPPP95) Use:
Isopropylphenyl Phosphate, Flame Retardant IPPP95 Is Used For Rubber Products And PVC Plastic Flame Retardant Conveyor Belt, Cable, Chloroprene Rubber, Nitrile Rubber And Other Synthetic Rubber Flame Retardant Plasticizer, Triisopropyl Phenyl Phosphate Applicable To Fabric Coating, Circuit Boards, Flooring, Textiles, PVC, Phenolic Resin And Other Fields.
Isopropylphenyl Phosphate, Flame Retardant IPPP95 Halogen-Free Phosphate Flame Retardant Plasticizer, Will Not Twice Pollute The Environment; In The Phosphate Ester Species Is A Viscosity, Phosphorus Content Is More Moderate A Model. This Product Is Colorless And Transparent, Good Compatibility, The Use Of Both Flame Retardant And Plasticizer, In The Flame Retardant And Plasticizer To Play A Balance Between The Role, But Also To Make The Processing Of The Same Material And Its Physical Properties.
The halogen in polyamide flame retardant is mainly to delay or prevent the combustion of polymer in gas phase. It at high temperatures can produce hydrogen halide (HX), free radical termination agent with the polymer combustion chain reaction active substances in the reaction, and reduce or eliminate this kind of active free radicals, to slow or stop the chain reaction in the gas phase combustion flame retardant.
HX, on the other hand, is an incombustible gas, diluting the concentration of oxygen, and its relative density is greater than that of air in the polymer and gas formation. Halogenated flame retardants can be used to promote carbonization in the condensed phase.
Chlorinated flame retardants for polyamide are mainly: saytex EFR25010 pairs (hexachlorocyclopentadiene) cyclooctane; Brominated flame retardants mainly include: ten bromine diphenyl ether (DBDPO), as follows: 14 benzene (say2 Tex 120) phenoxy phosphorus-containing flame retardants for strengthened and reinforced nylon are very effective, it can be coordinated effect and metal oxides, metal salts, phosphorus compounds, or into common use carbon agent.
Such as phosphorus-containing flame retardants is used with zinc borate, and its synergistic effect with the same antimony oxide, the main mechanism for: 2 zno, 3 b2o3, 3. 5 h2o + 22 rx znx2 2 + 6 r2o bx3 + 11 + 3. 5 h2o 2 zno, 3 b2o3, 3. 5 h2o + 22 znx2 hx 2 + 6 bx3 + 14. 5 h2o; The reaction produces BX3, ZnX2 can capture free radicals in the gas phase, weaken or eliminate the burning chain reaction. In solid phase, the formation of carbonization layer is promoted.
At high temperatures, the BX3, ZnX2, forms a glassy coating on the surface of the flammable material to isolate the thermal oxygen. The water is released by the reaction to absorb heat, cool and smoke.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Nylon, polyamide (PA), is on the main chain containing amide groups (NHCO -) polymer compound, is an important engineering resin, in the five common engineering plastics (PA, PC, POM, PBT/PET, PPO), are widely used in the field of daily life and industry.
According to the number of carbon atoms in the chain section of polyamide, PA6, PA11, PAl2, PA46, PA610, PA612, PAl010, etc. Among them PA6, PA66 is the most widely used and the most productive. Nylon has high mechanical strength, high melting point, wear resistance, oil resistant and general organic solvent, excellent heat resistance.
Because of the amide base on the molecular structure, it has good flame retardation. According to ASTM D635 test, the type of self-extinguishing. But as a widely used material, nylon mostly faces a more demanding environment, such as high humidity, high temperature, high voltage, etc. Therefore, polyamide flame retardants have become a crucial factor in many occasions, especially in electrical applications such as terminal posts, sockets, switches, etc. Therefore, it is necessary to further improve the flame retardancy of nylon.
The flame retardant methods of polyamide flame retardant are mainly: (1) adding flame retardant additives to the composite process; The flame retardant is added to the polyamide by means of mechanical mixing. If the APP/talc of a certain proportion is added to PA26, it can obtain the flame retardant PA26 of UL94 V20, which has the advantages of convenient use and wide application, but has a great influence on the application performance of the polymer. The main additives used for polyamide are double (hexachlorocyclopentadiene) cyclooctane, ammonium polyphosphate and diphenyl ether.
The main method of nylon flame retardant is to use additive flame retardant. (2) grafting or bonding of a flame retardant group on a polymer chain or surface; The flame retardant is used as a reaction monomer to participate in the reaction, and it is combined with the main chain or side chain of polyamide to make the polyamide itself contain flame retardant components.
It is characterized by good stability, small toxicity, small influence on the use of materials, and long-lasting flame retardancy, which is an ideal method. However, the operation and processing technology is complex, and in practical application, it is less common than additive flame retardant method. The reactive flame retardants used for polyamides have two compounds (hydroxyethyl) methoxyphosphine, 1, 3, 62, 3 (4, 62 diaminamide 222 sulfuric triazine), and tripolycyanate mixtures, etc. (3) co-polymerization with flame retardant monomer (lactam, diamine or dibasic acid);
Isopropylphenyl Phosphate(IPPP95) Use:
Isopropylphenyl Phosphate, Flame Retardant IPPP95 Is Used For Rubber Products And PVC Plastic Flame Retardant Conveyor Belt, Cable, Chloroprene Rubber, Nitrile Rubber And Other Synthetic Rubber Flame Retardant Plasticizer, Triisopropyl Phenyl Phosphate Applicable To Fabric Coating, Circuit Boards, Flooring, Textiles, PVC, Phenolic Resin And Other Fields.
Isopropylphenyl Phosphate, Flame Retardant IPPP95 Halogen-Free Phosphate Flame Retardant Plasticizer, Will Not Twice Pollute The Environment; In The Phosphate Ester Species Is A Viscosity, Phosphorus Content Is More Moderate A Model. This Product Is Colorless And Transparent, Good Compatibility, The Use Of Both Flame Retardant And Plasticizer, In The Flame Retardant And Plasticizer To Play A Balance Between The Role, But Also To Make The Processing Of The Same Material And Its Physical Properties.
The halogen in polyamide flame retardant is mainly to delay or prevent the combustion of polymer in gas phase. It at high temperatures can produce hydrogen halide (HX), free radical termination agent with the polymer combustion chain reaction active substances in the reaction, and reduce or eliminate this kind of active free radicals, to slow or stop the chain reaction in the gas phase combustion flame retardant.
HX, on the other hand, is an incombustible gas, diluting the concentration of oxygen, and its relative density is greater than that of air in the polymer and gas formation. Halogenated flame retardants can be used to promote carbonization in the condensed phase.
Chlorinated flame retardants for polyamide are mainly: saytex EFR25010 pairs (hexachlorocyclopentadiene) cyclooctane; Brominated flame retardants mainly include: ten bromine diphenyl ether (DBDPO), as follows: 14 benzene (say2 Tex 120) phenoxy phosphorus-containing flame retardants for strengthened and reinforced nylon are very effective, it can be coordinated effect and metal oxides, metal salts, phosphorus compounds, or into common use carbon agent.
Such as phosphorus-containing flame retardants is used with zinc borate, and its synergistic effect with the same antimony oxide, the main mechanism for: 2 zno, 3 b2o3, 3. 5 h2o + 22 rx znx2 2 + 6 r2o bx3 + 11 + 3. 5 h2o 2 zno, 3 b2o3, 3. 5 h2o + 22 znx2 hx 2 + 6 bx3 + 14. 5 h2o; The reaction produces BX3, ZnX2 can capture free radicals in the gas phase, weaken or eliminate the burning chain reaction. In solid phase, the formation of carbonization layer is promoted.
At high temperatures, the BX3, ZnX2, forms a glassy coating on the surface of the flammable material to isolate the thermal oxygen. The water is released by the reaction to absorb heat, cool and smoke.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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