News Details
Polyester non halogen-free flame retardant
2017-12-2 11:56:53
Polyester non halogen-free flame retardant
Polyester (PET) belongs to high molecular compound. Terephthalic acid (PTA) and ethylene glycol (EG) were condensed to produce polyethylene terephthalate (PET), and some of them were finally generated by underwater pelletizing. The characteristics, composition, application scope and application examples of polyester non halogen flame retardant are introduced. No halogen flame retardant polyester EPFR series of phosphorus nitrogen expansion type environmental friendly flame retardant has the advantages of no phosphorus, low smoke, low toxicity, high efficiency, good compatibility and little influence on material properties.
With respect to life, more and more responsible manufacturers are starting to choose halogen - free flame retardant materials. These responsible manufacturers need flame-retardant UL94-V0 to meet hot wire requirements, a variety of superior performance, the right price of polyester halogen free flame retardant.
At present, the problems of flame retardant used in polyester are:
1. halogen flame retardant system. The most important and widely used one is the brominated styrene polymer, which has excellent thermal stability. And because it is melted and mixed with nylon, it has good fluidity in processing. In addition, the flame retardant nylon prepared by it has excellent electrical properties and good physical and mechanical properties. The limitation of the flame retardants is poor light stability, which is not completely compatible with nylon, and the cost is higher than that of the widely applied ten brominated diphenyl ethers.
At present, the most widely used flame retardant in China is ten brominated diphenyl ethers. Because of its higher bromine content, nylon has higher flame retardant efficiency and is the most economical flame retardant. But because it is a kind of filler type flame retardant, it has a great negative effect on the processing fluidity and the physical and mechanical properties of the product. Especially in the increasingly complex structure of electrical connector and other products, the requirements for the processing flow of resin are also increasing. Poor fluidity resin can't meet the requirement of processing small and complex parts. Therefore, it can be imagined that such filled flame retardants are difficult to be applied in high-grade fields, and their thermal stability and light stability are also poor.
In recent years, a new flame retardant used in nylon and polyester flame retardance is ten bromo two phenyl ethane. It has the same bromine content and the same high flame retardant efficiency with ten brominated diphenyl ethers. In addition, it has good thermal stability and light stability. The limitation is that it is the same as ten brominated diphenyl ethers, which belongs to filler flame retardants, and has poor compatibility with polymers. Therefore, processing fluidity and physical and mechanical properties of products are poor.
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.
2. halogen free flame retardant system. Red phosphorus is in halogen-free flame retardant of nylon and polyester is widely used, has the advantages of less addition and wide use etc.. Ordinary red phosphorus easy absorption of moisture, bad compatibility with polymer, especially easy to cause spontaneous combustion, not the actual use. Microencapsulated red phosphorus flame retardant, red phosphorus reduced activity, solves the compatibility, phosphorus content is about 85%, but spontaneous combustion problems have not been effectively resolved, serious dust pollution. Is the red phosphorus masterbatch of red phosphorus and aluminum hydroxide, expandable graphite and other inorganic flame retardants, with dark red resin particle carrier, security problems have been solved.
The flame retardant low smoke and flame retardant efficiency is high; no dust pollution, excellent machining performance; low density, good thermal stability, product physical performance; die nonblooming, does not migrate, corrosion process. In particular, the products have high leakage resistance mark index (CTI), which has obvious advantages in the application of electronic and electrical appliances. The main drawback of red phosphorus masterbatch is the color of dark red and black, in addition, to endow the products with more color choices.
Ammonium polyphosphate (APP) with high phosphorus content, adding features such as less, has also been used for flame retardant nylon and polyester preparation, but the main disadvantage of APP is strong hygroscopicity, low thermal stability (a NH3 removal process occurs at 230 DEG C), the nylon and polyester processing process solution, cause discoloration foaming products.
Poly melamine phosphate (MPP) is a kind of environmentally friendly flame retardant are widely used in flame retardant nylon and polyester, the molecular chain structure similar to APP, is relatively large with the molecular weight of melamine substituted side groups of NH4 +, thus increasing the thermal stability, but the cause of the low phosphorus content of MPP. It is found by experiment that 25% of MPP can only increase the oxygen index of glass fiber reinforced PA66 by 5.5%, while the vertical combustion performance has hardly improved. Therefore, the application of flame retardant PA66 requires more MPP, resulting in a serious decline in the mechanical properties of the resin.
Melamine cyanurate (MCA) is commonly used in flame retardant nylon and polyester, which is characterized by low toxicity, no corrosion, heat and UV stability, however its flame retardant nylon and polyester, burning melting drops, of flame retardant polyester poor, unable to reach the UL94-V0 level, the electrical properties of products in the humid environment is poor moreover, poor dispersion in the base material, processing difficulty.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Polyester (PET) belongs to high molecular compound. Terephthalic acid (PTA) and ethylene glycol (EG) were condensed to produce polyethylene terephthalate (PET), and some of them were finally generated by underwater pelletizing. The characteristics, composition, application scope and application examples of polyester non halogen flame retardant are introduced. No halogen flame retardant polyester EPFR series of phosphorus nitrogen expansion type environmental friendly flame retardant has the advantages of no phosphorus, low smoke, low toxicity, high efficiency, good compatibility and little influence on material properties.
With respect to life, more and more responsible manufacturers are starting to choose halogen - free flame retardant materials. These responsible manufacturers need flame-retardant UL94-V0 to meet hot wire requirements, a variety of superior performance, the right price of polyester halogen free flame retardant.
At present, the problems of flame retardant used in polyester are:
1. halogen flame retardant system. The most important and widely used one is the brominated styrene polymer, which has excellent thermal stability. And because it is melted and mixed with nylon, it has good fluidity in processing. In addition, the flame retardant nylon prepared by it has excellent electrical properties and good physical and mechanical properties. The limitation of the flame retardants is poor light stability, which is not completely compatible with nylon, and the cost is higher than that of the widely applied ten brominated diphenyl ethers.
At present, the most widely used flame retardant in China is ten brominated diphenyl ethers. Because of its higher bromine content, nylon has higher flame retardant efficiency and is the most economical flame retardant. But because it is a kind of filler type flame retardant, it has a great negative effect on the processing fluidity and the physical and mechanical properties of the product. Especially in the increasingly complex structure of electrical connector and other products, the requirements for the processing flow of resin are also increasing. Poor fluidity resin can't meet the requirement of processing small and complex parts. Therefore, it can be imagined that such filled flame retardants are difficult to be applied in high-grade fields, and their thermal stability and light stability are also poor.
In recent years, a new flame retardant used in nylon and polyester flame retardance is ten bromo two phenyl ethane. It has the same bromine content and the same high flame retardant efficiency with ten brominated diphenyl ethers. In addition, it has good thermal stability and light stability. The limitation is that it is the same as ten brominated diphenyl ethers, which belongs to filler flame retardants, and has poor compatibility with polymers. Therefore, processing fluidity and physical and mechanical properties of products are poor.
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.
2. halogen free flame retardant system. Red phosphorus is in halogen-free flame retardant of nylon and polyester is widely used, has the advantages of less addition and wide use etc.. Ordinary red phosphorus easy absorption of moisture, bad compatibility with polymer, especially easy to cause spontaneous combustion, not the actual use. Microencapsulated red phosphorus flame retardant, red phosphorus reduced activity, solves the compatibility, phosphorus content is about 85%, but spontaneous combustion problems have not been effectively resolved, serious dust pollution. Is the red phosphorus masterbatch of red phosphorus and aluminum hydroxide, expandable graphite and other inorganic flame retardants, with dark red resin particle carrier, security problems have been solved.
The flame retardant low smoke and flame retardant efficiency is high; no dust pollution, excellent machining performance; low density, good thermal stability, product physical performance; die nonblooming, does not migrate, corrosion process. In particular, the products have high leakage resistance mark index (CTI), which has obvious advantages in the application of electronic and electrical appliances. The main drawback of red phosphorus masterbatch is the color of dark red and black, in addition, to endow the products with more color choices.
Ammonium polyphosphate (APP) with high phosphorus content, adding features such as less, has also been used for flame retardant nylon and polyester preparation, but the main disadvantage of APP is strong hygroscopicity, low thermal stability (a NH3 removal process occurs at 230 DEG C), the nylon and polyester processing process solution, cause discoloration foaming products.
Poly melamine phosphate (MPP) is a kind of environmentally friendly flame retardant are widely used in flame retardant nylon and polyester, the molecular chain structure similar to APP, is relatively large with the molecular weight of melamine substituted side groups of NH4 +, thus increasing the thermal stability, but the cause of the low phosphorus content of MPP. It is found by experiment that 25% of MPP can only increase the oxygen index of glass fiber reinforced PA66 by 5.5%, while the vertical combustion performance has hardly improved. Therefore, the application of flame retardant PA66 requires more MPP, resulting in a serious decline in the mechanical properties of the resin.
Melamine cyanurate (MCA) is commonly used in flame retardant nylon and polyester, which is characterized by low toxicity, no corrosion, heat and UV stability, however its flame retardant nylon and polyester, burning melting drops, of flame retardant polyester poor, unable to reach the UL94-V0 level, the electrical properties of products in the humid environment is poor moreover, poor dispersion in the base material, processing difficulty.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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