News Details
ABS without halogen flame retardant
2017-10-18 17:07:59
ABS without halogen flame retardant
ABS is a terpolymer of acrylonitrile, butadiene and styrene, as one of the five synthetic resin, production is the largest, the most widely used polymer, it will be PS, SAN, properties of the BS organically unify, both tough and hard, had excellent mechanical properties. In order to meet the requirements of UL94 v-0 (1.6mm) for flame retardant performance, both mechanical properties and colouring properties are considered, especially the toughness, so that the impact strength of the material is not affected greatly.
There are many solutions in the halogen flame retardant field; Also in the field of halogen-free flame retardant, red phosphorus flame retardants as a halogen-free flame retardant of ABS of the flame retardant efficiency is very high solution, it can meet the flame retardant properties and mechanical properties of these two requirements, but its made of ABS flame retardant material due to the deep color, can not meet the requirement of the color performance, can only be used for black or dark places;
The situation now is: at the same time in the must meet the flame retardant performance, mechanical properties and color performance of the three basic conditions under the premise of ABS halogen-free flame retardant, flame retardant modification has been the world recognized within the territory of a difficult problem, at home and abroad has not been found to have very good mature solution. The main reasons for the analysis are as follows:
One of the reasons: ABS, as a ternary copolymer, its own ABS without halogen flame retardant solution is very difficult to achieve; In fact, the other one yuan polymer (such as nylon, PBT, PP, PC, PET, etc.) compared with ABS, because it only needs to solve just a halogen-free flame retardant polymers, the material of halogen free flame retardant are relatively easy to implement, now many countries have good solutions; And ABS is greatly different, it needs at the same time satisfy the acrylonitrile, butadiene and styrene, these three kinds of halogen-free flame retardant materials, and materials are the three components need different flame retardant mechanism, in view of this, many countries, though many years of exploration, so far, has not yet formed a content less than 30% of halogen free flame retardant solutions.
Reason # 2: the world has developed some halogen-free flame retardant solutions, mainly includes: on the basis of the aluminium hydroxide and magnesium hydroxide dehydrated cool flame retardant system, the expansion of the polyphosphoric acid amine based flame retardant system, by alkyl or aryl phosphate (or phosphonic acid ester) kind of flame retardant plasticizers on the basis of flame retardant system, and so on, the flame retardant system, add the amount to over 35%, often filling amount is too large, or too large, plasticizing effect on the performance of the materials, especially the impact on the notched impact strength, so also can't meet the above three basic conditions.
Tert Benzyl diphenyl phosphate (BPDP-71B) use
Tert-butyl phosphate diphenyl phosphate, tert-butylated triphenyl phosphate is halogen-free organophosphorus flame retardant, using a new, excellent performance of phosphorus flame retardant, with excellent thermal stability and hydrolysis Sex. Its high thermal stability makes it as an engineering plastic flame retardant at the same time, can improve the plastic melting performance. Tert-butylated triphenyl phosphate for the liquid, in the resin can make its durability and hydrolysis stability is better, and easy to produce the table and stress cracking. It is widely used in flame retardant PV (, cellulose resin, into the rubber, phenolic resin, epoxy resin, polyene unit fiber.
The flame retardant effect of phosphor flame retardant is caused by the dehydration and carbonation of the early decomposition of high polymer. This process of dehydration and carbonization must depend on the oxygen-containing groups of the polymer itself, and it has a high polymer with oxygen groups in its own structure. Their flame retardant effects will be better. For polypropylene, due to the molecular structure of itself without oxygen containing groups, when used alone phosphorus-containing flame retardant flame retardant effect is not good, but if with (0 h) 3 and the distribution of such as Mg (OH) 2 can produce synergies, good flame retardant effect is obtained.
The commonly used flame retardants of organophosphorus are triphenyl phosphate, trimethylphenyl phosphate, trimethylene phosphate, propylene phosphate and butyl phosphatate. The characteristics of phosphate ester are the dual functions of flame retardant and plasticizing.
It can make the flame retardant without halogenation, and its plasticizing function can improve the flow processing when plastic is formed, and can restrain the residue after combustion.
The toxic gases and corrosive gases produced are less than halogen flame retardants. Its main advantage is high efficiency; The effect of light stability or light stabilizer is small. Small corrosivity in processing and combustion; Having the effect of obstructing the rekindling; Rarely or not to increase the quality of flame retardant materials. But most phosphaters have some drawbacks. For example, poor heat resistance, high volatility and compatibility are not ideal, and there is a drop in the combustion.
The main products of phosphor inorganic flame retardant are red phosphorus flame retardant, ammonium phosphate and ammonium polyphosphate. As the dosage of halogen-free flame retardants is increased, the dosage of red phosphorus flame retardants is increasing. The flame retardant effect of red phosphorus is better than the flame retardant effect of phosphate ester. Phosphorous inorganic flame retardants have been widely used due to their excellent thermal stability, non-volatile, non-corrosive gases, long-lasting effects and low toxicity.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
ABS is a terpolymer of acrylonitrile, butadiene and styrene, as one of the five synthetic resin, production is the largest, the most widely used polymer, it will be PS, SAN, properties of the BS organically unify, both tough and hard, had excellent mechanical properties. In order to meet the requirements of UL94 v-0 (1.6mm) for flame retardant performance, both mechanical properties and colouring properties are considered, especially the toughness, so that the impact strength of the material is not affected greatly.
There are many solutions in the halogen flame retardant field; Also in the field of halogen-free flame retardant, red phosphorus flame retardants as a halogen-free flame retardant of ABS of the flame retardant efficiency is very high solution, it can meet the flame retardant properties and mechanical properties of these two requirements, but its made of ABS flame retardant material due to the deep color, can not meet the requirement of the color performance, can only be used for black or dark places;
The situation now is: at the same time in the must meet the flame retardant performance, mechanical properties and color performance of the three basic conditions under the premise of ABS halogen-free flame retardant, flame retardant modification has been the world recognized within the territory of a difficult problem, at home and abroad has not been found to have very good mature solution. The main reasons for the analysis are as follows:
One of the reasons: ABS, as a ternary copolymer, its own ABS without halogen flame retardant solution is very difficult to achieve; In fact, the other one yuan polymer (such as nylon, PBT, PP, PC, PET, etc.) compared with ABS, because it only needs to solve just a halogen-free flame retardant polymers, the material of halogen free flame retardant are relatively easy to implement, now many countries have good solutions; And ABS is greatly different, it needs at the same time satisfy the acrylonitrile, butadiene and styrene, these three kinds of halogen-free flame retardant materials, and materials are the three components need different flame retardant mechanism, in view of this, many countries, though many years of exploration, so far, has not yet formed a content less than 30% of halogen free flame retardant solutions.
Reason # 2: the world has developed some halogen-free flame retardant solutions, mainly includes: on the basis of the aluminium hydroxide and magnesium hydroxide dehydrated cool flame retardant system, the expansion of the polyphosphoric acid amine based flame retardant system, by alkyl or aryl phosphate (or phosphonic acid ester) kind of flame retardant plasticizers on the basis of flame retardant system, and so on, the flame retardant system, add the amount to over 35%, often filling amount is too large, or too large, plasticizing effect on the performance of the materials, especially the impact on the notched impact strength, so also can't meet the above three basic conditions.
Tert Benzyl diphenyl phosphate (BPDP-71B) use
Tert-butyl phosphate diphenyl phosphate, tert-butylated triphenyl phosphate is halogen-free organophosphorus flame retardant, using a new, excellent performance of phosphorus flame retardant, with excellent thermal stability and hydrolysis Sex. Its high thermal stability makes it as an engineering plastic flame retardant at the same time, can improve the plastic melting performance. Tert-butylated triphenyl phosphate for the liquid, in the resin can make its durability and hydrolysis stability is better, and easy to produce the table and stress cracking. It is widely used in flame retardant PV (, cellulose resin, into the rubber, phenolic resin, epoxy resin, polyene unit fiber.
The flame retardant effect of phosphor flame retardant is caused by the dehydration and carbonation of the early decomposition of high polymer. This process of dehydration and carbonization must depend on the oxygen-containing groups of the polymer itself, and it has a high polymer with oxygen groups in its own structure. Their flame retardant effects will be better. For polypropylene, due to the molecular structure of itself without oxygen containing groups, when used alone phosphorus-containing flame retardant flame retardant effect is not good, but if with (0 h) 3 and the distribution of such as Mg (OH) 2 can produce synergies, good flame retardant effect is obtained.
The commonly used flame retardants of organophosphorus are triphenyl phosphate, trimethylphenyl phosphate, trimethylene phosphate, propylene phosphate and butyl phosphatate. The characteristics of phosphate ester are the dual functions of flame retardant and plasticizing.
It can make the flame retardant without halogenation, and its plasticizing function can improve the flow processing when plastic is formed, and can restrain the residue after combustion.
The toxic gases and corrosive gases produced are less than halogen flame retardants. Its main advantage is high efficiency; The effect of light stability or light stabilizer is small. Small corrosivity in processing and combustion; Having the effect of obstructing the rekindling; Rarely or not to increase the quality of flame retardant materials. But most phosphaters have some drawbacks. For example, poor heat resistance, high volatility and compatibility are not ideal, and there is a drop in the combustion.
The main products of phosphor inorganic flame retardant are red phosphorus flame retardant, ammonium phosphate and ammonium polyphosphate. As the dosage of halogen-free flame retardants is increased, the dosage of red phosphorus flame retardants is increasing. The flame retardant effect of red phosphorus is better than the flame retardant effect of phosphate ester. Phosphorous inorganic flame retardants have been widely used due to their excellent thermal stability, non-volatile, non-corrosive gases, long-lasting effects and low toxicity.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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