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Nitrogen containing flame retardant of epoxy resin
2017-11-23 11:05:14
Nitrogen containing flame retardant of epoxy resin
The nitrogen containing flame retardant of epoxy resin decomposes when heated, and has the functions of heat absorption, cooling and dilution. Nitrogen containing flame retardant epoxy resin is mainly of melamine and its derivatives and related heterocyclic compounds, mainly of melamine, melamine phosphate and so on, because of its chemical properties and nylon are similar, so it is a halogen containing flame retardant and superior red phosphorus.
Melamine itself can make nylon mixture reach V-O grade. Flame retardant is very effective in combination with various halogen derivatives, metal oxides, some organic phosphoric acid or alkali metals and alkaline earth metal salts. The Melapur2o0 (melamine phosphate) used for glass reinforced nylon 66 is added to reduce the thermal stability of the polyamine. Therefore, temperature control should be taken into account in the extrusion model. Unlike the halogen containing additive and red phosphorus, nitrogen makes the polyamide dripping.
Epoxy resin containing nitrogen flame retardant is applied in epoxy resin, polyurethane, polyolefin and nylon and other materials. It has excellent thermal stability and good compatibility with polymer.
Phosphonate flame retardant is a promising flame retardant. Because of the existence of C- P bond in phosphonate molecule, its stability is very good, and it has very good water resistance and solvent resistance. Foreign phosphonate products include: Pyrovatex is N- hydroxymethyl propyl methyl phosphonate, Antiblaze is in the ring phosphonate. The phosphonate esters were also studied in China, and the synthesized phosphonate esters were N, N- pairs, benzene two amine group (2- hydroxy) two benzyl phosphonic acid four ethyl ester, methyl phosphonic acid two methyl ester (DMMP), in which DMMP is an additive flame retardant developed in recent years. DMMP is prepared from methylene Phosphite by isomerization reaction under the action of catalyst. The most notable feature of DMMP is that phosphorus content is as high as 25%, and the flame retardant effect is very good. When the flame retardant is used, half of the common flame retardants can play the same effect.
Tungsten complexes, such as titanium, zirconium and tungsten, have flame retardancy, but the synthesis process and production cost of these complexes are different. From the economic, simple and efficient point of view, tungsten complexes are widely used. Synthesis of tungsten anion complexes flame retardant with sodium tungstate and tartaric acid. The flame retardant can be combined with the ionic bond of wool fabric with positive charge in acid medium to obtain better flame retardant effect.
Aluminum hydroxide and magnesium hydroxide are the main force in inorganic flame retardants, especially when halogen free flame retardants are advocated in some fields, and they will become the first choice. Because of the need to add inorganic flame retardant in large quantity, in some special cases, flame retardant application will exceed the amount of the polymer itself, therefore, is bound to have a great influence on the mechanical properties of polymers, which requires to deal with the inorganic flame retardant, namely particle, surface activation.
Triphenyl Phosphate (TPP)
Retardants tpp quality standards:
Appearance: white flaky crystal
Content : ≥ 99%;
Acid value (mgKOH / g): ≤ 0.1;
Free phenol : ≤ 0.1%;
Freezing point : ≥ 47.0 ℃
Chromaticity (APHA): ≤ 60;
Moisture : ≤ 0.1%
Density (50 ℃, g/cm3) :1.185-1 .202
Retardants tpp Packing: NW 25KG / composite paper ( lined with black plastic bags ) , a small cabinet loaded 12.5 tons .
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.
The purpose of particulate matter is to disperse them evenly in polymers and to act as flame retardants everywhere in the body. It is proved that the amount of the particles can be reduced properly when the same flame retardant standard is reached. In addition, the surface activation is to make the compatibility between inorganic flame retardant and polymer better, which can reduce the mechanical strength of polymer itself due to the addition of a large number of inorganic flame retardants. Recently, some papers have talked about the flame retardant advantages of inorganic nanoparticles. Our experience suggests that the addition of these nanoparticles may improve mechanical strength, but will not have much impact on the flame retardancy.
Because the inorganic flame retardant mechanism is to reduce the temperature of the system by thermal decomposition and release water vapor, water vapor and dilute combustible gas to achieve flame retardant effect, which is based on the amount of water vapor to determine its flame retardant effect, so it is related with the dosage of the flame retardant, and flame retardant is generally inorganic nanoparticles. Flame retardant particle size distribution between 2 mu M5 mu m is enough.
Intumescent flame retardant is a kind of flame retardant which is mainly composed of phosphorus and nitrogen in recent years. When the flame retardant is heated, the surface can form a layer of dense carbon foam layer, which has the advantages of heat insulation, oxygen separation, smoke suppression, and prevention of droplet, and has good flame retardant performance.
Since 1992, there has been a successful research report in China. Many research institutes have been engaged in the development of this field so far, but there is still no industrial scale production report.
There has been no reason to scale production may have two: one is the left has yet to inorganic acid reaction products, reflected in the flame retardant products surface moisture absorption phenomenon; the other one is NP intumescent flame retardant is some macromolecular compounds, the last step is solid state reaction, its mass and heat transfer process too complex since industrialization is difficult. Finally, the inorganic flame retardants need to be explained, people have always been three oxidation of two antimony into this category, but in strict terms, three antimony oxide two is not a flame retardant, it is only a synergistic agent with halogen flame retardants.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The nitrogen containing flame retardant of epoxy resin decomposes when heated, and has the functions of heat absorption, cooling and dilution. Nitrogen containing flame retardant epoxy resin is mainly of melamine and its derivatives and related heterocyclic compounds, mainly of melamine, melamine phosphate and so on, because of its chemical properties and nylon are similar, so it is a halogen containing flame retardant and superior red phosphorus.
Melamine itself can make nylon mixture reach V-O grade. Flame retardant is very effective in combination with various halogen derivatives, metal oxides, some organic phosphoric acid or alkali metals and alkaline earth metal salts. The Melapur2o0 (melamine phosphate) used for glass reinforced nylon 66 is added to reduce the thermal stability of the polyamine. Therefore, temperature control should be taken into account in the extrusion model. Unlike the halogen containing additive and red phosphorus, nitrogen makes the polyamide dripping.
Epoxy resin containing nitrogen flame retardant is applied in epoxy resin, polyurethane, polyolefin and nylon and other materials. It has excellent thermal stability and good compatibility with polymer.
Phosphonate flame retardant is a promising flame retardant. Because of the existence of C- P bond in phosphonate molecule, its stability is very good, and it has very good water resistance and solvent resistance. Foreign phosphonate products include: Pyrovatex is N- hydroxymethyl propyl methyl phosphonate, Antiblaze is in the ring phosphonate. The phosphonate esters were also studied in China, and the synthesized phosphonate esters were N, N- pairs, benzene two amine group (2- hydroxy) two benzyl phosphonic acid four ethyl ester, methyl phosphonic acid two methyl ester (DMMP), in which DMMP is an additive flame retardant developed in recent years. DMMP is prepared from methylene Phosphite by isomerization reaction under the action of catalyst. The most notable feature of DMMP is that phosphorus content is as high as 25%, and the flame retardant effect is very good. When the flame retardant is used, half of the common flame retardants can play the same effect.
Tungsten complexes, such as titanium, zirconium and tungsten, have flame retardancy, but the synthesis process and production cost of these complexes are different. From the economic, simple and efficient point of view, tungsten complexes are widely used. Synthesis of tungsten anion complexes flame retardant with sodium tungstate and tartaric acid. The flame retardant can be combined with the ionic bond of wool fabric with positive charge in acid medium to obtain better flame retardant effect.
Aluminum hydroxide and magnesium hydroxide are the main force in inorganic flame retardants, especially when halogen free flame retardants are advocated in some fields, and they will become the first choice. Because of the need to add inorganic flame retardant in large quantity, in some special cases, flame retardant application will exceed the amount of the polymer itself, therefore, is bound to have a great influence on the mechanical properties of polymers, which requires to deal with the inorganic flame retardant, namely particle, surface activation.
Triphenyl Phosphate (TPP)
Retardants tpp quality standards:
Appearance: white flaky crystal
Content : ≥ 99%;
Acid value (mgKOH / g): ≤ 0.1;
Free phenol : ≤ 0.1%;
Freezing point : ≥ 47.0 ℃
Chromaticity (APHA): ≤ 60;
Moisture : ≤ 0.1%
Density (50 ℃, g/cm3) :1.185-1 .202
Retardants tpp Packing: NW 25KG / composite paper ( lined with black plastic bags ) , a small cabinet loaded 12.5 tons .
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.
The purpose of particulate matter is to disperse them evenly in polymers and to act as flame retardants everywhere in the body. It is proved that the amount of the particles can be reduced properly when the same flame retardant standard is reached. In addition, the surface activation is to make the compatibility between inorganic flame retardant and polymer better, which can reduce the mechanical strength of polymer itself due to the addition of a large number of inorganic flame retardants. Recently, some papers have talked about the flame retardant advantages of inorganic nanoparticles. Our experience suggests that the addition of these nanoparticles may improve mechanical strength, but will not have much impact on the flame retardancy.
Because the inorganic flame retardant mechanism is to reduce the temperature of the system by thermal decomposition and release water vapor, water vapor and dilute combustible gas to achieve flame retardant effect, which is based on the amount of water vapor to determine its flame retardant effect, so it is related with the dosage of the flame retardant, and flame retardant is generally inorganic nanoparticles. Flame retardant particle size distribution between 2 mu M5 mu m is enough.
Intumescent flame retardant is a kind of flame retardant which is mainly composed of phosphorus and nitrogen in recent years. When the flame retardant is heated, the surface can form a layer of dense carbon foam layer, which has the advantages of heat insulation, oxygen separation, smoke suppression, and prevention of droplet, and has good flame retardant performance.
Since 1992, there has been a successful research report in China. Many research institutes have been engaged in the development of this field so far, but there is still no industrial scale production report.
There has been no reason to scale production may have two: one is the left has yet to inorganic acid reaction products, reflected in the flame retardant products surface moisture absorption phenomenon; the other one is NP intumescent flame retardant is some macromolecular compounds, the last step is solid state reaction, its mass and heat transfer process too complex since industrialization is difficult. Finally, the inorganic flame retardants need to be explained, people have always been three oxidation of two antimony into this category, but in strict terms, three antimony oxide two is not a flame retardant, it is only a synergistic agent with halogen flame retardants.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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