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Polyolefin composite flame retardant
2017-11-13 10:48:24
Polyolefin composite flame retardant
Halogen flame retardants used in polyolefin composite flame retardants are seldom used in polyolefin flame retardant. They are commonly used in conjunction with Sb2O3. The same Sb2O3 alone not only on the flame retardant properties of no great contribution but will make the mechanical properties of the system decreased a lot, the reason why the two together to show a synergistic effect that usually occurred with Sb2O3 halide synergistic reaction, thereby improving the polyolefin composite flame retardant halogen flame retardant effect obviously, because they can be generated in the SbX3 a wide range of temperature in combustion, and SbX3 can effectively capture free radicals. It is reported that SbCl3 and SbBr3 are directly used in polyolefin flame retardant, and the synergistic effect is better than that of halogenated flame retardants and Sb2O3.
Bao Zhiyu after the DBD, Sb2O3, chlorinated paraffin, ZnO cooperative polyolefin composite flame retardant HDPE optimized formulation design shows that when DBD, chlorinated paraffin, the dosage of Sb2O3 is 3, the amount of ZnO was the best of 1, the oxygen index reached 2911 HDPE, the tensile strength of 25MPa.
Luo building of ten bromine biphenyl ether, Sb2O3 collaborative polyolefin composite flame retardant HDPE agent that adding 14% ten PBDEs and 6% Sb2O3 HDPE can be made to reach V20 level, in addition to the mechanical properties of HDPE can also maintain ideal results: tensile strength 2119MPa, elongation was 305%, the notched impact strength for 30kJ PI m2. And he is using Al (OH) 3 - Sb2O3 instead of part of DBDPO (400 mesh), the 10% Al (OH) 3 (1200 mesh) can replace 3% DBDPO - Sb2O3 (400 mesh).
Zuo Jiandong et al. Studied the synergistic flame retardant PE of ten bromo two benzene ethane with Sb2O3. Come join DBDPE PI Sb2O3 could reduce the PE heat release rate during combustion, when adding 30% PE oxygen index is above 28, the DBDPE II Sb2O3 polyolefin composite flame retardant can restrain the PE melting drop phenomenon, the mechanical properties of the composites: tensile strength decreased from 11MPa to 917MPa, the impact strength from 75kJ m2 to 15kJ M2 PI pi.
Liu Xiongxiong used ten polybrominated diphenyl ether - Sb2O3 synergistic flame retardant PE, when the ten BDE 7 phr, Sb2O3 4 phr of the oxygen index reached 4712, in addition the author also used glass fiber team system for the enhancement of the mechanical properties of the composites has been greatly promoted, tensile strength never before modification of 34MPa increased to 61MPa, the impact strength never before modification 245J PI m increased to 375J PI M.
Multicomponent composite flame retardant system. Carpentier EVA2Mg (OH) 2 pi zinc borate as the flame retardant of polyethylene. It is found that zinc borate can slow down the degradation process of polyethylene and form a glass like protective layer to isolate the polyethylene chains in the inner layer from the heat source.
Triphenyl Phosphate (TPP)
Flame retardant tpp This product has good transparency , flexibility and good benefits antimicrobial resistance, with water, oil, electrical insulation and compatibility. Mainly for the cellulose resin, a vinyl resin, natural rubber and synthetic rubber flame retardant plasticizers may also be used for acetate and glycerol triacetate film thin , rigid polyurethane foam , phenolic resin, and engineering plastics such as resistance PPO burning plasticized . Flame Retardant tpp manufacturer price mainly in Jiangsu .
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.
Tian Chunming of Expanded Graphite Flame Retardant synergy APP HDPE was studied, the addition of thermal stability of HDPE EG Pi of APP increased, the degradation is slow, the amount of residual carbon increase. When APP: EG=2: 1 added, the oxygen index of the system reached 30, and good flame retardant effect was obtained. At the same time, the tensile strength of the system was not decreased, and decreased from 1417MPa to 1310MPa.
Bourbigot experiments show that the 4 molecular sieve APP PI PER! As the expansion synergist system when the best dosage was only 1wt%. Tian Chunming and other experiments have proved that ZnO can also act as synergist in intumescent flame retardants. The optimum dosage is about 1 phr, which leads to the decrease of oxygen index. The synergistic effect of ZnO is to catalyze the esterification and charring reaction to produce more residual carbon to form a stable protective carbon layer.
Zhang Zhilong used the intumescent flame retardant synergistic flame retardant PE - zeolite. The results show that the best effect is obtained when APP = PER: ZEO=2115: 6: 215, and the oxygen index of the material is 2913.
Bao Zhisu using high molecular weight thermoplastic phenolic resin with Microencapsulated Red Phosphorus, flame retardant, high nitrogen Mg (OH) 2 and LDPE and PP synergistic flame retardant. The study found that the use of phenolic resin with high molecular weight (Mw=80000 ~ 120000) synergistic flame retardant polyolefin can make flame retardant material has excellent flame retardant properties outside (UL294V20) can also make the tensile strength increase, and maintain the elongation and notched impact strength of the same.
The kinetic and thermodynamic processes of thermal oxidative degradation of condensed Graphite Flame Retarded by expanded graphite with different halogen free flame retardants (LLDPE) at 300~400 OC were investigated by Xie and Fu Liye spectroscopy. The research shows: (1) the increase of rupture of LLDPE molecular chain with time and temperature increased; (2) has a very important role in the formation of flame retardant expandable graphite flame retardant LLDPE P - red phosphorus - O - P and P - O - C bond; (3) the pyrolysis temperature has great influence the fire retardant effect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Halogen flame retardants used in polyolefin composite flame retardants are seldom used in polyolefin flame retardant. They are commonly used in conjunction with Sb2O3. The same Sb2O3 alone not only on the flame retardant properties of no great contribution but will make the mechanical properties of the system decreased a lot, the reason why the two together to show a synergistic effect that usually occurred with Sb2O3 halide synergistic reaction, thereby improving the polyolefin composite flame retardant halogen flame retardant effect obviously, because they can be generated in the SbX3 a wide range of temperature in combustion, and SbX3 can effectively capture free radicals. It is reported that SbCl3 and SbBr3 are directly used in polyolefin flame retardant, and the synergistic effect is better than that of halogenated flame retardants and Sb2O3.
Bao Zhiyu after the DBD, Sb2O3, chlorinated paraffin, ZnO cooperative polyolefin composite flame retardant HDPE optimized formulation design shows that when DBD, chlorinated paraffin, the dosage of Sb2O3 is 3, the amount of ZnO was the best of 1, the oxygen index reached 2911 HDPE, the tensile strength of 25MPa.
Luo building of ten bromine biphenyl ether, Sb2O3 collaborative polyolefin composite flame retardant HDPE agent that adding 14% ten PBDEs and 6% Sb2O3 HDPE can be made to reach V20 level, in addition to the mechanical properties of HDPE can also maintain ideal results: tensile strength 2119MPa, elongation was 305%, the notched impact strength for 30kJ PI m2. And he is using Al (OH) 3 - Sb2O3 instead of part of DBDPO (400 mesh), the 10% Al (OH) 3 (1200 mesh) can replace 3% DBDPO - Sb2O3 (400 mesh).
Zuo Jiandong et al. Studied the synergistic flame retardant PE of ten bromo two benzene ethane with Sb2O3. Come join DBDPE PI Sb2O3 could reduce the PE heat release rate during combustion, when adding 30% PE oxygen index is above 28, the DBDPE II Sb2O3 polyolefin composite flame retardant can restrain the PE melting drop phenomenon, the mechanical properties of the composites: tensile strength decreased from 11MPa to 917MPa, the impact strength from 75kJ m2 to 15kJ M2 PI pi.
Liu Xiongxiong used ten polybrominated diphenyl ether - Sb2O3 synergistic flame retardant PE, when the ten BDE 7 phr, Sb2O3 4 phr of the oxygen index reached 4712, in addition the author also used glass fiber team system for the enhancement of the mechanical properties of the composites has been greatly promoted, tensile strength never before modification of 34MPa increased to 61MPa, the impact strength never before modification 245J PI m increased to 375J PI M.
Multicomponent composite flame retardant system. Carpentier EVA2Mg (OH) 2 pi zinc borate as the flame retardant of polyethylene. It is found that zinc borate can slow down the degradation process of polyethylene and form a glass like protective layer to isolate the polyethylene chains in the inner layer from the heat source.
Triphenyl Phosphate (TPP)
Flame retardant tpp This product has good transparency , flexibility and good benefits antimicrobial resistance, with water, oil, electrical insulation and compatibility. Mainly for the cellulose resin, a vinyl resin, natural rubber and synthetic rubber flame retardant plasticizers may also be used for acetate and glycerol triacetate film thin , rigid polyurethane foam , phenolic resin, and engineering plastics such as resistance PPO burning plasticized . Flame Retardant tpp manufacturer price mainly in Jiangsu .
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.
Tian Chunming of Expanded Graphite Flame Retardant synergy APP HDPE was studied, the addition of thermal stability of HDPE EG Pi of APP increased, the degradation is slow, the amount of residual carbon increase. When APP: EG=2: 1 added, the oxygen index of the system reached 30, and good flame retardant effect was obtained. At the same time, the tensile strength of the system was not decreased, and decreased from 1417MPa to 1310MPa.
Bourbigot experiments show that the 4 molecular sieve APP PI PER! As the expansion synergist system when the best dosage was only 1wt%. Tian Chunming and other experiments have proved that ZnO can also act as synergist in intumescent flame retardants. The optimum dosage is about 1 phr, which leads to the decrease of oxygen index. The synergistic effect of ZnO is to catalyze the esterification and charring reaction to produce more residual carbon to form a stable protective carbon layer.
Zhang Zhilong used the intumescent flame retardant synergistic flame retardant PE - zeolite. The results show that the best effect is obtained when APP = PER: ZEO=2115: 6: 215, and the oxygen index of the material is 2913.
Bao Zhisu using high molecular weight thermoplastic phenolic resin with Microencapsulated Red Phosphorus, flame retardant, high nitrogen Mg (OH) 2 and LDPE and PP synergistic flame retardant. The study found that the use of phenolic resin with high molecular weight (Mw=80000 ~ 120000) synergistic flame retardant polyolefin can make flame retardant material has excellent flame retardant properties outside (UL294V20) can also make the tensile strength increase, and maintain the elongation and notched impact strength of the same.
The kinetic and thermodynamic processes of thermal oxidative degradation of condensed Graphite Flame Retarded by expanded graphite with different halogen free flame retardants (LLDPE) at 300~400 OC were investigated by Xie and Fu Liye spectroscopy. The research shows: (1) the increase of rupture of LLDPE molecular chain with time and temperature increased; (2) has a very important role in the formation of flame retardant expandable graphite flame retardant LLDPE P - red phosphorus - O - P and P - O - C bond; (3) the pyrolysis temperature has great influence the fire retardant effect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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