News Details
Boron composite flame retardant
2017-10-22 14:54:39
Boron composite flame retardant
Boric acid or boric acid is produced by boron composite flame retardant, which forms a glass-like melting in the process of pyrolysis, which insulates the transmission of oxygen and heat.
In the solidification phase, boric acid and cellulose, hydroxy reaction generated boric acid ester, thus inhibiting the formation of sinistral glucose, cellulose is directly oxidized to carbon dioxide, reducing the generation of flammable gases carbon monoxide. This with phosphorus flame retardants for phosphoric acid catalyst in the process of burning mainly generates carbon monoxide, and its flame retardant effect also occurred in the solidification phase, and the vitreous can stop the spread of the combustible gas to the outside. The above several factors can achieve flame retardant and good smoke suppression effect.
Boron phosphors in boron composite flame retardants have been used to improve the hydrolysis stability of organic boron flame retardants and reduce the toxicity of phosphorous flame retardants.
Organophosphorus flame retardant has the ability to be washable, but it is very toxic. If the organic boron compound is combined in the molecule to synthesize boron-phosphorus flame retardant, many products can be obtained. Boric acid was used as the basic raw material and chlorine ethanol reaction to get the ethyl borate, and the effect of glycol amine; The phosphonic acid chloride was also obtained by trichlorophosphine and chloroethanol, and the two reacted with the same boron composite flame retardant. Because the molecules contain boron, phosphorus and nitrogen, the flame retardant performance is good, and the LOI value can be up to 37~ 38.
Such as boric acid with the boric acid and glycerin reaction diglycerides, again with ethylene glycol and phosphorus oxychloride reaction diethylene glycol phosphorus oxychloride, residual hydroxyl phosphate esterification using the former, in the same molecule introduction of boron and phosphorus flame retardant. Because the molecule contains several hydroxyl groups, it can be covalent bonding with cotton fiber under the catalysis of Louise, so it is better to be washable. Using water soluble polyurethane as crosslinking agent, it can be used to flame retardant of polyester fabric, the flame retardant effect is good, the LOI value reaches 38.5 (the value of unsorted polyester fabric LOI is 29.0), and water wash is reduced to 30.8 in 5 times.
Cresyl Diphenyl Phosphate(CDP) Use
This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.
Boron-halide compound flame retardant is suitable for dacron material. When halogen compounds are used as flame retardants, they release the halogen free radicals in the first place, and the high energy free radicals produced by the polyester in combustion can inhibit the growth of the chain. At the same time, the halogenated hydrogen is generated from the combustion of the combustible body, and the halogenated hydrogen also reacts with the polyester combustion to generate the free radicals through chain growth. In addition, the halogenated hydrogen gas dilutes the concentration of flammable gas produced by dacron cracking and slows combustion.
Halide flame retardant is mainly used in gas phase. In the gas phase, boron-halide composite flame retardants produce the gaseous trihalide in the combustion and then release the halogenated hydrogen, which also blocks the chain reaction between high-active free radicals. In the solid phase, boron flame retardants melt, seal the surface of the burners, the formation of the vitreous covering layer can insulate, also control the corrosive toxic gas halogenated hydrogen to escape. In addition, boron compounds release the heat-absorbing effect of the binding water to change the thermal decomposition pathway of combustible gas and inhibit the generation of flammable gases.
Bromine flame retardants is main varieties of halogen flame retardants, widely used in flame retardant finishing of polyester and other synthetic fiber, such as ten pbdes, hexabromocyclododecane, polybrominated biphenyl as to cause serious damage to human health and environment, have been banned in the European Union. Therefore, the development of boron-bromine compound flame retardant may be substituted for bromine flame retardant.
China's current production of FR - B is a kind of liquid containing bromine, boron additive flame retardant, called boric acid 3 (2, 3 - two br) propyl ester, is made up of 2, 3 - dibromo propyl alcohol dehydration with boron trioxide in esterification reaction.
This flame retardant LOI has a value of 28.5 and also has the effect of anti-smoking, which has little effect on the physical mechanical properties of the products and is easy to be processed and formed. It is mainly used for polyurethane, unsaturated polyester resin and phenolic epoxy resin. It can also produce good flame retardant effect on cotton fabric. But because it contains bromine in the molecules, hydrogen bromide gas is formed during combustion, which has adverse effects on the environment.
Boron halide composite flame retardants can be obtained by 2- allyl -1,3- oxygen boron heterocyclic pentane. Allyl vinyl double-stranded bromide can get a boron halide compound flame retardants, and 3 - chloro - 1, 2 - dihydroxy propane yuan to get another boron halide compound flame retardants, the LOI value can reach 28.5, has good flame retardancy.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Boric acid or boric acid is produced by boron composite flame retardant, which forms a glass-like melting in the process of pyrolysis, which insulates the transmission of oxygen and heat.
In the solidification phase, boric acid and cellulose, hydroxy reaction generated boric acid ester, thus inhibiting the formation of sinistral glucose, cellulose is directly oxidized to carbon dioxide, reducing the generation of flammable gases carbon monoxide. This with phosphorus flame retardants for phosphoric acid catalyst in the process of burning mainly generates carbon monoxide, and its flame retardant effect also occurred in the solidification phase, and the vitreous can stop the spread of the combustible gas to the outside. The above several factors can achieve flame retardant and good smoke suppression effect.
Boron phosphors in boron composite flame retardants have been used to improve the hydrolysis stability of organic boron flame retardants and reduce the toxicity of phosphorous flame retardants.
Organophosphorus flame retardant has the ability to be washable, but it is very toxic. If the organic boron compound is combined in the molecule to synthesize boron-phosphorus flame retardant, many products can be obtained. Boric acid was used as the basic raw material and chlorine ethanol reaction to get the ethyl borate, and the effect of glycol amine; The phosphonic acid chloride was also obtained by trichlorophosphine and chloroethanol, and the two reacted with the same boron composite flame retardant. Because the molecules contain boron, phosphorus and nitrogen, the flame retardant performance is good, and the LOI value can be up to 37~ 38.
Such as boric acid with the boric acid and glycerin reaction diglycerides, again with ethylene glycol and phosphorus oxychloride reaction diethylene glycol phosphorus oxychloride, residual hydroxyl phosphate esterification using the former, in the same molecule introduction of boron and phosphorus flame retardant. Because the molecule contains several hydroxyl groups, it can be covalent bonding with cotton fiber under the catalysis of Louise, so it is better to be washable. Using water soluble polyurethane as crosslinking agent, it can be used to flame retardant of polyester fabric, the flame retardant effect is good, the LOI value reaches 38.5 (the value of unsorted polyester fabric LOI is 29.0), and water wash is reduced to 30.8 in 5 times.
Cresyl Diphenyl Phosphate(CDP) Use
This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.
Boron-halide compound flame retardant is suitable for dacron material. When halogen compounds are used as flame retardants, they release the halogen free radicals in the first place, and the high energy free radicals produced by the polyester in combustion can inhibit the growth of the chain. At the same time, the halogenated hydrogen is generated from the combustion of the combustible body, and the halogenated hydrogen also reacts with the polyester combustion to generate the free radicals through chain growth. In addition, the halogenated hydrogen gas dilutes the concentration of flammable gas produced by dacron cracking and slows combustion.
Halide flame retardant is mainly used in gas phase. In the gas phase, boron-halide composite flame retardants produce the gaseous trihalide in the combustion and then release the halogenated hydrogen, which also blocks the chain reaction between high-active free radicals. In the solid phase, boron flame retardants melt, seal the surface of the burners, the formation of the vitreous covering layer can insulate, also control the corrosive toxic gas halogenated hydrogen to escape. In addition, boron compounds release the heat-absorbing effect of the binding water to change the thermal decomposition pathway of combustible gas and inhibit the generation of flammable gases.
Bromine flame retardants is main varieties of halogen flame retardants, widely used in flame retardant finishing of polyester and other synthetic fiber, such as ten pbdes, hexabromocyclododecane, polybrominated biphenyl as to cause serious damage to human health and environment, have been banned in the European Union. Therefore, the development of boron-bromine compound flame retardant may be substituted for bromine flame retardant.
China's current production of FR - B is a kind of liquid containing bromine, boron additive flame retardant, called boric acid 3 (2, 3 - two br) propyl ester, is made up of 2, 3 - dibromo propyl alcohol dehydration with boron trioxide in esterification reaction.
This flame retardant LOI has a value of 28.5 and also has the effect of anti-smoking, which has little effect on the physical mechanical properties of the products and is easy to be processed and formed. It is mainly used for polyurethane, unsaturated polyester resin and phenolic epoxy resin. It can also produce good flame retardant effect on cotton fabric. But because it contains bromine in the molecules, hydrogen bromide gas is formed during combustion, which has adverse effects on the environment.
Boron halide composite flame retardants can be obtained by 2- allyl -1,3- oxygen boron heterocyclic pentane. Allyl vinyl double-stranded bromide can get a boron halide compound flame retardants, and 3 - chloro - 1, 2 - dihydroxy propane yuan to get another boron halide compound flame retardants, the LOI value can reach 28.5, has good flame retardancy.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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