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High temperature resistant flame retardant of unsaturated resin
2017-11-28 14:02:18
High temperature resistant flame retardant of unsaturated resin
The high temperature resistant flame retardant of unsaturated resin is very important in people's daily life, and the output is increasing rapidly.
Zinc borate with low hydration is one of the most excellent properties of the high temperature resistant flame retardant of unsaturated resin. The molecular formula of low hydrated zinc borate is 2ZnO? 3B2O3? 3 5H2O with a molecular weight of 43466. This product is a white crystalline, the melting point is 980 DEG C, long time of crystal water only 0 7% lost at 300 deg.
Unsaturated resin, high temperature retardant, low hydrated zinc borate, insoluble in water and general organic solvent, can be dissolved in ammonia and become complex. The refractive index of zinc borate with low hydration is similar to that of the general polymer, so it can maintain the transparency of the original resin by adding it to the polymer. The dehydration temperature of the product is above 300 centigrade, which is much higher than the processing temperature of the general polymer. It is very suitable for the flame retardancy and smoke suppression of the polymer.
It is cheaper and less toxic than the widely used Sb2O3 flame retardants in the market. Its LD50 is 10000mg/kg (rat oral), and its smoke suppression rate reaches 25%. It can be used alone as a flame retardant, and can also be synergistic with other flame retardants. So it can be widely used in plastics, rubber, resin, synthetic fiber, paper, wood and wood products, paint, electrical insulation materials, wire and cable, carpet, antirust paint, lift, transport, transport belt cloth etc..
It can also be used for the flame retardancy and smoke suppression of household appliances. At present, the production capacity in China is less than 10kt/a, the output is less than 5kt/a, and the market demand is above 150kt/a. Therefore, the low hydrated zinc borate flame retardant should be vigorously developed to meet the needs of people.
The synthesis of low hydrated zinc borate is usually made of Zn (OH) 2 with zinc borate or zinc sulfate, borax and ZnO as raw materials. However, the production equipment of these methods has large investment, large aftertreatment, more by-products and low purity of the product. The production method with ZnO and boric acid as raw material is simple, easy to operate, less investment in equipment, high purity and easy to industrialize.
2ZnO+6H3BO3 - and 2ZnO? 3B2O2? 3 5H2O+5 5H2O process for the production of: boric acid and water into a reaction kettle through stirring, heating to a certain temperature, adding ZnO in the insulation of reaction, reaction to a certain time after discharge, filtration, filtrate recycling, filter cake by qualified washing, drying and crushing after the test, the product package. The optimum technological conditions are: ZnO: H3BO3=1: 3.15 - 3.45 (mass), ZnO: H2O=1: 32 - 34, the reaction temperature is 77 - 90 degrees, and the reaction time is 5 - 8h. The warm water is better than the cold water when washing.
The use of low hydrated zinc borate is cheap, nontoxic, non irritant, high dehydration temperature and flame retardant. It does not affect the mechanical strength, elongation and thermal aging properties of the polymer after processing with the polymer. It produces ZnC12 and C1O compounds with halogen based polymers at high temperature. These two compounds are the termination agents of free radicals, and have the same effect with Sb2O3.
Tris(2-chloroisopropyl)Phosphate(TCPP)
Cas No:13674 -84-5
HS Code HS: 29199000
The most important indicator of product:
colorless transparent liquid, moisture ≤ 0.1, Acid value ≤ 0.1, Chroma ≤ 50, the phosphorus content: 9.4 ± 0.5
Raw materials: phosphorus oxychloride and epichlorohydrin.
Belong to several categories of dangerous goods:
Currently Tris(2-chloroisopropyl)Phosphate TCPP general cargo exports are not dangerous.
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.
It can promote the carbonization of the polymer at high temperature, and make a layer of mucous layer on the surface of the polymer to reduce the flame and prevent the carbonization of the lower polymer. With low hydrated zinc borate PVC at 650 DEG C to form carbide containing boron and 62% of the original 80% zinc, zinc catalyzed dehydrochlorination of PVC, the PVC crosslinked into carbon layer, low hydrated zinc borate and halogen containing materials such as bromine containing polyester, nylon, epoxy resin has synergistic flame retardant synergism.
It also has synergistic flame retardancy and smoke suppression in non halogen materials such as ethylene vinyl acetate copolymer, polyethylene, styrene, polyvinyl chloride, epoxy resin, acrylic ester and synthetic rubber, and can improve the performance of filler. Reduce dropping and improve its mechanical properties.
Low hydrated zinc borate with Sb2O3 and Al (OH) was 3 at the same time, can reduce the dosage of Sb2O3, the flame retardant effect is better, so in unsaturated polyester, epoxy resin, PBT, PET, PA, polysulfone, polyphenylene ether, ethylene vinyl acetate copolymer, ethylene acrylate copolymer, polyethylene, ABS, polyurethane, polycarbonate,, EPDM, is widely used in acrylic acid.
The single low hydrated zinc borate in silicon rubber and cable materials is a good flame retardant and smoke suppression agent. Zinc borate with low hydration can be used as a multi-functional inorganic antirust pigment instead of toxic lead and chromium antirust pigment. It releases borate ions on the surface of the metal, adsorbs ferrous ions on the metal surface, oxidize them to iron ions under the action of oxygen in the air, and form an insoluble, stable, passivated composite salt film with boric acid ions, so as to prevent the metal from rusting.
In recent years, we have made great efforts to develop fine particles and ultrafine nanoscale products of low hydrated zinc borate with flame retardants and smoke suppressants. For example, fine zinc borate and size FirebrakeZBFine for ultra fine product 05 - 3 m, as the dispersion of fiber in flame retardant sterilizing agent to increase its processing and its components, and its A1 (OH) 3 can be used as flame retardant high temperature carbonization resistance.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The high temperature resistant flame retardant of unsaturated resin is very important in people's daily life, and the output is increasing rapidly.
Zinc borate with low hydration is one of the most excellent properties of the high temperature resistant flame retardant of unsaturated resin. The molecular formula of low hydrated zinc borate is 2ZnO? 3B2O3? 3 5H2O with a molecular weight of 43466. This product is a white crystalline, the melting point is 980 DEG C, long time of crystal water only 0 7% lost at 300 deg.
Unsaturated resin, high temperature retardant, low hydrated zinc borate, insoluble in water and general organic solvent, can be dissolved in ammonia and become complex. The refractive index of zinc borate with low hydration is similar to that of the general polymer, so it can maintain the transparency of the original resin by adding it to the polymer. The dehydration temperature of the product is above 300 centigrade, which is much higher than the processing temperature of the general polymer. It is very suitable for the flame retardancy and smoke suppression of the polymer.
It is cheaper and less toxic than the widely used Sb2O3 flame retardants in the market. Its LD50 is 10000mg/kg (rat oral), and its smoke suppression rate reaches 25%. It can be used alone as a flame retardant, and can also be synergistic with other flame retardants. So it can be widely used in plastics, rubber, resin, synthetic fiber, paper, wood and wood products, paint, electrical insulation materials, wire and cable, carpet, antirust paint, lift, transport, transport belt cloth etc..
It can also be used for the flame retardancy and smoke suppression of household appliances. At present, the production capacity in China is less than 10kt/a, the output is less than 5kt/a, and the market demand is above 150kt/a. Therefore, the low hydrated zinc borate flame retardant should be vigorously developed to meet the needs of people.
The synthesis of low hydrated zinc borate is usually made of Zn (OH) 2 with zinc borate or zinc sulfate, borax and ZnO as raw materials. However, the production equipment of these methods has large investment, large aftertreatment, more by-products and low purity of the product. The production method with ZnO and boric acid as raw material is simple, easy to operate, less investment in equipment, high purity and easy to industrialize.
2ZnO+6H3BO3 - and 2ZnO? 3B2O2? 3 5H2O+5 5H2O process for the production of: boric acid and water into a reaction kettle through stirring, heating to a certain temperature, adding ZnO in the insulation of reaction, reaction to a certain time after discharge, filtration, filtrate recycling, filter cake by qualified washing, drying and crushing after the test, the product package. The optimum technological conditions are: ZnO: H3BO3=1: 3.15 - 3.45 (mass), ZnO: H2O=1: 32 - 34, the reaction temperature is 77 - 90 degrees, and the reaction time is 5 - 8h. The warm water is better than the cold water when washing.
The use of low hydrated zinc borate is cheap, nontoxic, non irritant, high dehydration temperature and flame retardant. It does not affect the mechanical strength, elongation and thermal aging properties of the polymer after processing with the polymer. It produces ZnC12 and C1O compounds with halogen based polymers at high temperature. These two compounds are the termination agents of free radicals, and have the same effect with Sb2O3.
Tris(2-chloroisopropyl)Phosphate(TCPP)
Cas No:13674 -84-5
HS Code HS: 29199000
The most important indicator of product:
colorless transparent liquid, moisture ≤ 0.1, Acid value ≤ 0.1, Chroma ≤ 50, the phosphorus content: 9.4 ± 0.5
Raw materials: phosphorus oxychloride and epichlorohydrin.
Belong to several categories of dangerous goods:
Currently Tris(2-chloroisopropyl)Phosphate TCPP general cargo exports are not dangerous.
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.
It can promote the carbonization of the polymer at high temperature, and make a layer of mucous layer on the surface of the polymer to reduce the flame and prevent the carbonization of the lower polymer. With low hydrated zinc borate PVC at 650 DEG C to form carbide containing boron and 62% of the original 80% zinc, zinc catalyzed dehydrochlorination of PVC, the PVC crosslinked into carbon layer, low hydrated zinc borate and halogen containing materials such as bromine containing polyester, nylon, epoxy resin has synergistic flame retardant synergism.
It also has synergistic flame retardancy and smoke suppression in non halogen materials such as ethylene vinyl acetate copolymer, polyethylene, styrene, polyvinyl chloride, epoxy resin, acrylic ester and synthetic rubber, and can improve the performance of filler. Reduce dropping and improve its mechanical properties.
Low hydrated zinc borate with Sb2O3 and Al (OH) was 3 at the same time, can reduce the dosage of Sb2O3, the flame retardant effect is better, so in unsaturated polyester, epoxy resin, PBT, PET, PA, polysulfone, polyphenylene ether, ethylene vinyl acetate copolymer, ethylene acrylate copolymer, polyethylene, ABS, polyurethane, polycarbonate,, EPDM, is widely used in acrylic acid.
The single low hydrated zinc borate in silicon rubber and cable materials is a good flame retardant and smoke suppression agent. Zinc borate with low hydration can be used as a multi-functional inorganic antirust pigment instead of toxic lead and chromium antirust pigment. It releases borate ions on the surface of the metal, adsorbs ferrous ions on the metal surface, oxidize them to iron ions under the action of oxygen in the air, and form an insoluble, stable, passivated composite salt film with boric acid ions, so as to prevent the metal from rusting.
In recent years, we have made great efforts to develop fine particles and ultrafine nanoscale products of low hydrated zinc borate with flame retardants and smoke suppressants. For example, fine zinc borate and size FirebrakeZBFine for ultra fine product 05 - 3 m, as the dispersion of fiber in flame retardant sterilizing agent to increase its processing and its components, and its A1 (OH) 3 can be used as flame retardant high temperature carbonization resistance.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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