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The red phosphorus flame retardant epoxy resin
2017-11-28 14:02:01
The red phosphorus flame retardant epoxy resin
From the beginning of the last century in 60s, red phosphorus flame retardant used mainly in synthetic resin, polyurethane, epoxy resin and thermosetting resin as a flame retardant, and achieved good flame retardant effect.
In early 70s, red phosphorus is added directly to the polymer, the red phosphorus dust, when using flammable, dangerous, as the poor compatibility of inorganic phosphorus and resin, ultimately affects the mechanical properties of the products.
In 70s began at the end of the capsule in treatment of Micro Phosphorus stabilized in 1984, the first successful development for thermoplastic phenolic resin coated red phosphorus, and used for glass fiber reinforced nylon 66, greatly improve the impact strength of the product. Add to the enhancement, filling thermoplastic plastics coated red phosphorus, and achieved good results. To the end of 80s, the red phosphorus microencapsulation technology has matured, has also been gradually commercialization of red phosphorus masterbatch.
Study of red phosphorus flame retardant epoxy resin production started late, but the development is very fast. The last century in the late 90s began research and development of red phosphorus flame retardant epoxy resin production. With the continuous development of the plastic industry and the improvement of the quality of the products, the requirements for the fire prevention and flame retardancy of plastics are becoming more and more strict.
At present, the global fire modification of plastics is a commonly used halogen flame retardants (DecaBDE), because the halogen containing flame retardant high efficiency, to reduce the amount, little influence on the properties of the material, and the price is relatively modest. However, halogen containing flame retardants will produce a lot of smoke and toxic gas during processing and pyrolysis process, which will be highly corrosive to equipment and seriously affect the health of operators.
In recent years, some European Union countries believe that brominated flame retardant can produce high carcinogenic polybrominated benzol (PBDD) and polybrominated two benzofuran (PBDF) when the brominated flame retardant is burned. In February 2003, the European Parliament and the Council of the European Union introduced ROHS and WEEE two ban provisions since July 2006, banned the sale of halogen flame retardants in the EU market (DecaBDE) and electronic plastic products. China also announced that, since March 2007, halogen - based flame retardants containing six kinds of toxic components such as lead, cadmium, mercury, polybrominated biphenyl and polybrominated biphenyl ethers were stopped.
After a long time of experiment and application shows that red phosphorus flame retardant epoxy resin is a high performance flame retardant, less dosage can achieve good flame retardant effect, because the filling quantity is little, on the mechanical properties of material, especially the electric effect. For example, in nylon materials, halogenated flame retardants are easy to react with the amide group of nylon on the processing temperature to make the extruded products foaming. In addition of red phosphorus flame retardant nylon material can greatly improve the tracking index.
Triphenyl Phosphate (TPP)
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.
In the red phosphorus flame retardant is the only element agent. The flame retardant mechanism is different from the halogen flame retardant, the former is the solid phase inhibition type and the latter is the gas phase inhibition type. The red phosphorus in the heat and oxygen in the air, generating polymetaphosphate. Polyphosphoric acid (polyphosphoric acid) is a stable stable compound, which forms a isolation layer on the surface of the burning substance. In addition, due to the dehydration of polyphosphoric acid, the carbonization of plastic is formed, and the carbonization layer is formed on the surface, which not only separates oxygen, but also keeps stable at a very high temperature. Red phosphorus is particularly effective for oxygen containing polymers!
In recent years, the domestic common in the research and production of low smoke, non halogen, low toxicity, red phosphorus flame retardant masterbatch products. It is relative to the red phosphorus WP has process performance and good safety. The flame retardancy of the following polymers is required.
1. Engineering plastics (PA6, PA66, PBT, PC, MC nylon)
2. General purpose plastics (PE, PP, EVA, EAA, EPR)
3. Thermosetting resins (polyamines, epoxy resins, unsaturated polyester)
High efficiency red phosphorus flame retardant masterbatch products with high flame retardant efficiency, add a convenient and safe operation, no dust pollution, has the advantages of good thermal stability, is one of the best domestic halogen flame retardant alternative products. With halogen flame retardant (ten bromo two stupid ether) compared to red phosphorus flame retardant materials, flame retardant masterbatch has the following characteristics:
Low density a; B high tracking index (CTI) value; C nonblooming, does not migrate, corrosion machine, D mold; physical properties; e excellent processing performance;
The red phosphorus flame retardant masterbatch flame retardant, meet the requirements of environmental protection, is the best substitute of halogen containing flame retardant, represents the development and future trend of flame retardant materials.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
From the beginning of the last century in 60s, red phosphorus flame retardant used mainly in synthetic resin, polyurethane, epoxy resin and thermosetting resin as a flame retardant, and achieved good flame retardant effect.
In early 70s, red phosphorus is added directly to the polymer, the red phosphorus dust, when using flammable, dangerous, as the poor compatibility of inorganic phosphorus and resin, ultimately affects the mechanical properties of the products.
In 70s began at the end of the capsule in treatment of Micro Phosphorus stabilized in 1984, the first successful development for thermoplastic phenolic resin coated red phosphorus, and used for glass fiber reinforced nylon 66, greatly improve the impact strength of the product. Add to the enhancement, filling thermoplastic plastics coated red phosphorus, and achieved good results. To the end of 80s, the red phosphorus microencapsulation technology has matured, has also been gradually commercialization of red phosphorus masterbatch.
Study of red phosphorus flame retardant epoxy resin production started late, but the development is very fast. The last century in the late 90s began research and development of red phosphorus flame retardant epoxy resin production. With the continuous development of the plastic industry and the improvement of the quality of the products, the requirements for the fire prevention and flame retardancy of plastics are becoming more and more strict.
At present, the global fire modification of plastics is a commonly used halogen flame retardants (DecaBDE), because the halogen containing flame retardant high efficiency, to reduce the amount, little influence on the properties of the material, and the price is relatively modest. However, halogen containing flame retardants will produce a lot of smoke and toxic gas during processing and pyrolysis process, which will be highly corrosive to equipment and seriously affect the health of operators.
In recent years, some European Union countries believe that brominated flame retardant can produce high carcinogenic polybrominated benzol (PBDD) and polybrominated two benzofuran (PBDF) when the brominated flame retardant is burned. In February 2003, the European Parliament and the Council of the European Union introduced ROHS and WEEE two ban provisions since July 2006, banned the sale of halogen flame retardants in the EU market (DecaBDE) and electronic plastic products. China also announced that, since March 2007, halogen - based flame retardants containing six kinds of toxic components such as lead, cadmium, mercury, polybrominated biphenyl and polybrominated biphenyl ethers were stopped.
After a long time of experiment and application shows that red phosphorus flame retardant epoxy resin is a high performance flame retardant, less dosage can achieve good flame retardant effect, because the filling quantity is little, on the mechanical properties of material, especially the electric effect. For example, in nylon materials, halogenated flame retardants are easy to react with the amide group of nylon on the processing temperature to make the extruded products foaming. In addition of red phosphorus flame retardant nylon material can greatly improve the tracking index.
Triphenyl Phosphate (TPP)
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.
In the red phosphorus flame retardant is the only element agent. The flame retardant mechanism is different from the halogen flame retardant, the former is the solid phase inhibition type and the latter is the gas phase inhibition type. The red phosphorus in the heat and oxygen in the air, generating polymetaphosphate. Polyphosphoric acid (polyphosphoric acid) is a stable stable compound, which forms a isolation layer on the surface of the burning substance. In addition, due to the dehydration of polyphosphoric acid, the carbonization of plastic is formed, and the carbonization layer is formed on the surface, which not only separates oxygen, but also keeps stable at a very high temperature. Red phosphorus is particularly effective for oxygen containing polymers!
In recent years, the domestic common in the research and production of low smoke, non halogen, low toxicity, red phosphorus flame retardant masterbatch products. It is relative to the red phosphorus WP has process performance and good safety. The flame retardancy of the following polymers is required.
1. Engineering plastics (PA6, PA66, PBT, PC, MC nylon)
2. General purpose plastics (PE, PP, EVA, EAA, EPR)
3. Thermosetting resins (polyamines, epoxy resins, unsaturated polyester)
High efficiency red phosphorus flame retardant masterbatch products with high flame retardant efficiency, add a convenient and safe operation, no dust pollution, has the advantages of good thermal stability, is one of the best domestic halogen flame retardant alternative products. With halogen flame retardant (ten bromo two stupid ether) compared to red phosphorus flame retardant materials, flame retardant masterbatch has the following characteristics:
Low density a; B high tracking index (CTI) value; C nonblooming, does not migrate, corrosion machine, D mold; physical properties; e excellent processing performance;
The red phosphorus flame retardant masterbatch flame retardant, meet the requirements of environmental protection, is the best substitute of halogen containing flame retardant, represents the development and future trend of flame retardant materials.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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