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Epoxy resin phosphorus silicon flame retardant
2017-11-25 11:09:33
Epoxy resin phosphorus silicon flame retardant
In the production and application of flame retardants, people are exploring the synthesis of new efficient flame retardants, but also the flame retardant effect of good combination of flame retardants.
The so-called compounding is mainly the use of the interaction between flame retardants, in order to improve the flame retardant efficiency, that is commonly known as "synergistic effect of flame retardants"". The flame retardant system with synergistic effect has good flame retardancy, flame retardancy, flame retardancy, smoke suppression, and some special functions. It has wide application range, low cost, and can improve economic benefits. It is one of the effective ways to realize low halogen and halogen-free flame retardants.
The synergistic system of epoxy resin phosphorus silicon flame retardant has halogen / phosphorus, antimony / halogen, phosphorus / nitrogen, etc., and also can be compounded with flame retardant, in order to reduce the amount of flame retardant and improve the flame retardant performance. The synergistic system of epoxy resin and phosphorus flame retardant is a kind of halogen-free flame retardant which has attracted the attention of experts and scholars in recent years.
There are two kinds of flame retardant epoxy resin: 1) flame retardant compounded with phosphorus compounds and silicon compounds. 2) the flame retardant compound itself contains phosphorus and silicon elements. Phosphorus based flame retardant [4] consists of two categories: inorganic phosphorus flame retardant and organic phosphorus flame retardant. Inorganic phosphorus flame retardants include red phosphorus, ammonium phosphate and ammonium polyphosphate, they have good stability, no volatilization, no corrosive gas, flame retardant lasting effect and low toxicity. Organic phosphorus flame retardants mainly include phosphate, phosphonate, phosphine oxide, phosphorus heterocyclic compounds, condensed phosphate and organic phosphate.
Compared with halogen compounds, although they have certain toxicity, their teratogenicity is not high, and their decomposition products are less corrosive and toxic. Besides flame retardant, phosphorus based flame retardants have a very important role in improving the comprehensive properties of polymer materials.
Phosphorus flame retardant mechanism is divided into three categories: first, phosphorus has strong dehydration, phosphorus flame retardant high temperature combustion of the formation of phosphoric acid or poly phosphoric acid, easy to form high viscosity molten glass and dense carbonized layer on the surface of the combustion, so that the matrix and heat and oxygen separation. The two is capturing free radicals.
Free radicals such as PO or HPO are decomposed in combustion, and the active H free radical or OH free radical is captured in the gas phase. The three is to promote the formation of porous foaming charring layer on the surface of the combustion, partition heat and oxygen. The flame retardant mechanism of each phosphorus flame retardant is the combination of these three kinds of flame retardant effect.
Triphenyl Phosphate (TPP)
Triphenyl Phosphatetpp-cas: 15-86-6
EINECS number: 204-112-2
Chinese Name: Triphenyl Phosphate
Chinese alias: phosphoric acid three phenyl ester; flame retardant TPP; TPP
English Name: Triphenyl Phosphate
English alias: Triphenyl Phosphate free of phenol; Triphenyl Phosphate (TPPa); Triphenyl Phosphate white XTL Phosphoric acid triphenyl ester; TPP
Molecular formula: C18H15O4P; OP (OC6H5) 3
Appearance and properties: white crystalline powder, odorless, slightly deliquescence
Molecular weight: 326.29
Steam pressure: 0.01kPa/20 ℃
The above is the product of the CAS, such as Triphenyl Phosphate tpp-cas: 15-86-6 other information please contact us!
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
When most phosphorus containing flame retardants are used in combination with nitrogen or halogen compounds, the flame retardant effect can be greatly improved. The mechanisms and applications of phosphorus / nitrogen synergistic system and phosphorus / halogen synergistic system have been reviewed.
However, the synergistic flame retardant effect and application of phosphorus and silicon are rarely reported. Silicone flame retardant is a new halogen-free flame retardant, also a carbon smoke inhibitor, or a good dispersant, which can increase the compatibility of materials. As a kind of polymer flame retardant, it has the characteristics of high efficiency, non-toxic, low smoke, anti dripping, no pollution, etc..
Organophosphorus flame retardant has the characteristics of high thermal stability, good precipitation resistance, high efficiency, low toxicity, non volatilization and so on. The composite flame retardant with better flame retardant effect can be obtained by combining the two methods.
Attention has been paid to silicon based flame retardants because of their low toxicity. It can be divided into inorganic silicon and silicone flame retardant according to its composition. The former is mainly SiO2, which has both reinforcing and inflaming retarding effects. The flame retardant mechanism is that when the plastic is burned, the SiO2 cover is formed, which plays a dual role of heat insulation and shielding.
Silicone flame retardants mainly include silicone oil, silicone resin, silicone rubber and organic silane amide. Organic silicon flame retardant has high efficiency, low toxicity, no pollution, less smoke, little influence on the performance of the resin, and excellent flame retardant properties, so it has attracted much attention. The flame retardant mechanism of [6] is: when the combustion of polymeric materials, silicone molecules in - Si - O - Si - C bond bond formation, formation of white charcoal composite combustion residue and inorganic layer can prevent the combustion of volatiles escaping oxygen barrier to prevent contact with the substrate, melt dripping, so as to achieve the purpose of flame retardant.
When the phosphorus / silicon flame retardant when used at high temperatures, phosphorus will catalyze the formation of carbon and silicon is facilitated, increase the thermal stability of the carbon layer, and thus play the phosphorus / silicon synergistic flame retardant effect, and, instead of using a silicone silane, phosphorus / silicon flame retardant synergistic effect has been further strengthened, because the layered silica siloxane the formation of degradation preventing oxidized carbon layer, thereby improving the stability of carbon layer.
Epoxy resin is one of the most important electronic and chemical materials at present. Therefore, many scholars have studied how to improve the flame retardancy of epoxy resin by non halogen flame retardants in recent years.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
In the production and application of flame retardants, people are exploring the synthesis of new efficient flame retardants, but also the flame retardant effect of good combination of flame retardants.
The so-called compounding is mainly the use of the interaction between flame retardants, in order to improve the flame retardant efficiency, that is commonly known as "synergistic effect of flame retardants"". The flame retardant system with synergistic effect has good flame retardancy, flame retardancy, flame retardancy, smoke suppression, and some special functions. It has wide application range, low cost, and can improve economic benefits. It is one of the effective ways to realize low halogen and halogen-free flame retardants.
The synergistic system of epoxy resin phosphorus silicon flame retardant has halogen / phosphorus, antimony / halogen, phosphorus / nitrogen, etc., and also can be compounded with flame retardant, in order to reduce the amount of flame retardant and improve the flame retardant performance. The synergistic system of epoxy resin and phosphorus flame retardant is a kind of halogen-free flame retardant which has attracted the attention of experts and scholars in recent years.
There are two kinds of flame retardant epoxy resin: 1) flame retardant compounded with phosphorus compounds and silicon compounds. 2) the flame retardant compound itself contains phosphorus and silicon elements. Phosphorus based flame retardant [4] consists of two categories: inorganic phosphorus flame retardant and organic phosphorus flame retardant. Inorganic phosphorus flame retardants include red phosphorus, ammonium phosphate and ammonium polyphosphate, they have good stability, no volatilization, no corrosive gas, flame retardant lasting effect and low toxicity. Organic phosphorus flame retardants mainly include phosphate, phosphonate, phosphine oxide, phosphorus heterocyclic compounds, condensed phosphate and organic phosphate.
Compared with halogen compounds, although they have certain toxicity, their teratogenicity is not high, and their decomposition products are less corrosive and toxic. Besides flame retardant, phosphorus based flame retardants have a very important role in improving the comprehensive properties of polymer materials.
Phosphorus flame retardant mechanism is divided into three categories: first, phosphorus has strong dehydration, phosphorus flame retardant high temperature combustion of the formation of phosphoric acid or poly phosphoric acid, easy to form high viscosity molten glass and dense carbonized layer on the surface of the combustion, so that the matrix and heat and oxygen separation. The two is capturing free radicals.
Free radicals such as PO or HPO are decomposed in combustion, and the active H free radical or OH free radical is captured in the gas phase. The three is to promote the formation of porous foaming charring layer on the surface of the combustion, partition heat and oxygen. The flame retardant mechanism of each phosphorus flame retardant is the combination of these three kinds of flame retardant effect.
Triphenyl Phosphate (TPP)
Triphenyl Phosphatetpp-cas: 15-86-6
EINECS number: 204-112-2
Chinese Name: Triphenyl Phosphate
Chinese alias: phosphoric acid three phenyl ester; flame retardant TPP; TPP
English Name: Triphenyl Phosphate
English alias: Triphenyl Phosphate free of phenol; Triphenyl Phosphate (TPPa); Triphenyl Phosphate white XTL Phosphoric acid triphenyl ester; TPP
Molecular formula: C18H15O4P; OP (OC6H5) 3
Appearance and properties: white crystalline powder, odorless, slightly deliquescence
Molecular weight: 326.29
Steam pressure: 0.01kPa/20 ℃
The above is the product of the CAS, such as Triphenyl Phosphate tpp-cas: 15-86-6 other information please contact us!
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
When most phosphorus containing flame retardants are used in combination with nitrogen or halogen compounds, the flame retardant effect can be greatly improved. The mechanisms and applications of phosphorus / nitrogen synergistic system and phosphorus / halogen synergistic system have been reviewed.
However, the synergistic flame retardant effect and application of phosphorus and silicon are rarely reported. Silicone flame retardant is a new halogen-free flame retardant, also a carbon smoke inhibitor, or a good dispersant, which can increase the compatibility of materials. As a kind of polymer flame retardant, it has the characteristics of high efficiency, non-toxic, low smoke, anti dripping, no pollution, etc..
Organophosphorus flame retardant has the characteristics of high thermal stability, good precipitation resistance, high efficiency, low toxicity, non volatilization and so on. The composite flame retardant with better flame retardant effect can be obtained by combining the two methods.
Attention has been paid to silicon based flame retardants because of their low toxicity. It can be divided into inorganic silicon and silicone flame retardant according to its composition. The former is mainly SiO2, which has both reinforcing and inflaming retarding effects. The flame retardant mechanism is that when the plastic is burned, the SiO2 cover is formed, which plays a dual role of heat insulation and shielding.
Silicone flame retardants mainly include silicone oil, silicone resin, silicone rubber and organic silane amide. Organic silicon flame retardant has high efficiency, low toxicity, no pollution, less smoke, little influence on the performance of the resin, and excellent flame retardant properties, so it has attracted much attention. The flame retardant mechanism of [6] is: when the combustion of polymeric materials, silicone molecules in - Si - O - Si - C bond bond formation, formation of white charcoal composite combustion residue and inorganic layer can prevent the combustion of volatiles escaping oxygen barrier to prevent contact with the substrate, melt dripping, so as to achieve the purpose of flame retardant.
When the phosphorus / silicon flame retardant when used at high temperatures, phosphorus will catalyze the formation of carbon and silicon is facilitated, increase the thermal stability of the carbon layer, and thus play the phosphorus / silicon synergistic flame retardant effect, and, instead of using a silicone silane, phosphorus / silicon flame retardant synergistic effect has been further strengthened, because the layered silica siloxane the formation of degradation preventing oxidized carbon layer, thereby improving the stability of carbon layer.
Epoxy resin is one of the most important electronic and chemical materials at present. Therefore, many scholars have studied how to improve the flame retardancy of epoxy resin by non halogen flame retardants in recent years.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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