News Details
Polycarbonate used flame retardant
2017-9-19 11:32:25
Polycarbonate used flame retardant
Have certain flame retardant polycarbonate itself, on the basis of relative molecular mass and different grafting, oxygen index was 21% - 24%, flame retardant performance of UL - 94 - V - 2 levels, better than the common plastic, polycarbonate may self-extinguishing, but it is still difficult to meet some application fields such as TV, computer, printer, the chassis and the component, the transformer coil, auto parts, building materials, etc on the properties of flame retardant PC (polycarbonate). In addition, the thermal melt of the polycarbonate when it burns is very easy to cause the nearby materials to catch fire. To this end, polycarbonate must be modified.
At present, polycarbonate is mainly divided into bromine, organophosphorus, silicon, sulfonate and boron. Bromine flame retardants are gradually being restricted due to their environmental pollution. Phosphorus-containing flame retardants add large amount: 10% - 30%, most of the decomposition temperature is lower, easy corrosion mould, some can also affect the impact strength of the resin, even under the high temperature will cause yellowing of polycarbonate material, organic phosphorus flame retardants more commonly used in polycarbonate/ABS alloy.
Organosilicon compounds are considered as a kind of high - efficiency, non-toxic, low-smoke and environment-friendly flame retardant. But the cost is higher, often with other flame retardant compound use. The flame retardant efficiency of boron flame retardants is not high, usually only with polysiloxane and can achieve better results.
Polycarbonate with flame retardant sulfonate series flame retardant with high efficiency, add very little can be made of polycarbonate UL 94 V - level 0 (3.2 mm thick), is used with other flame retardants can satisfy higher flame retardant performance requirements.
The flame retardant mechanism of polycarbonate flame retardant sulfonates. The main products commonly used in industry are benzene sulfonyl benzene sulfonate (KSS), potassium perfluorobutyl sulfonate (PPFBS), 2,4,5 - trichlorobenzene sulfonate (STB).
Trixylyl Phosphate(TXP)
Chinese Name: Tris (Xylene) Phosphate, Flame Retardant TXP
English Name: Trixylyl Phosphate
Appearance: Colorless Or Light Yellow Viscous Liquid, Slightly Soluble In Water, Soluble In General Organic Solvents.
Molecular Formula: C24H27 O4 P
Molecular Weight: 410.48
Acid Value: ≤0.1
Flash Point: ≥230
Moisture%: ≤0.1%
Melting Point: 46 Deg C
Specific Gravity: 1.130 ~ 1.150
Density: 1.154g / Cm3
Flash Point: 263.8 ° C
Refractive Index: 1.550? 1.560
Color Value: (PT-CO) ≤200
Refractive Index: N20 / D 1.552
Boiling Point: 490.8 ° Cat760mmHg
Raw Materials: Xylenol, Phosphorus Trichloride, Chlorine Through Esterification, Chlorination, Hydrolysis, Distillation Steps To Get.
Packing: Net Weight 200KG / Galvanized Iron Drum (A Small Cabinet Playing With 16 Tons), 1000KG / IB Bucket (A Small Cabinet 18 Tons) Or 23 Tons ISOTANK.
Trixylyl Phosphate(TXP) Use
Phosphate Trisphenylene Phosphate Is Low, Resistant To Hydrolysis, Good Flame Retardant Can Be Used As Vinyl Resin, Cellulose Resin, Natural And Synthetic Rubber Plasticizer, Low Volatility, Good Water Resistance, Flame Retardant. Trichenylene Phosphate Use For Use In Combustible Turbine Oils, With Good Flame Resistance And Good Thermal Oxidation Safety, Good Lubricity, Extreme Pressure Antiwear Additives For Lubricants, Thickeners. Also Used For Fire-Resistant Turbine Oil, With Good Thermal Oxidation Stability, Lubricity, As A Lubricant Anti-Wear Additives, Plasticizers, But Also For Flame Retardant, Wear-Resistant, Resistant To The Mold Of The Cable, Ethylene Conveyor Belt, Artificial Leather, Foam, Flooring Materials, But Also In Metallurgy, Electricity, Mechanical Engineering And Other Aspects As A Fire-Resistant Hydraulic Oil.
The flame retardant mechanism of fire retardant can be divided into: 1. The flame retardant of gas phase, which is the free radical that inhibits the growth of chain growth in the combustion reaction; 2. Flame retardant of condensed phase, that is, the decomposition of the polymer in the solid phase and the release of flammable gas from the polymer; 3. Interrupt heat exchange. The heat generated by the polymer is carried away without feedback to the polymer, so that the polymer will no longer continuously decompose. However, the flame retardant mechanism of sulfonates on polycarbonate is different from that of the above mentioned above. At present, it is believed that it can accelerate the carbon rate of polycarbonate and promote the crosslinking of polymer molecules.
Application of polycarbonate in flame retardant sulfonates. The commonly used sulfonate flame retardants in polycarbonate include KSS, PPFBS and STB. STB is used in flame retardant and non-transparent polycarbonate materials, and its flame retardant effect is good. The STB of 0.1 % in polycarbonate, the oxygen index can reach 25% ~ 35%, and the flame retardant grade can reach UL - 94 V- 0. STB can also be used in conjunction with other flame retardants. When used alone, the contents of halogen elements in the whole system were lower than 0.15%, and in some regulations, they were included in the non-halogen materials. Currently, Metropolitan Eximchem Limited and Arichem, LLC are suppliers of the goods.
PPFBS is also a highly effective flame retardant for polycarbonate, adding 0.06% to the polycarbonate - 0.1% PPFBS can make the material flame retardant performance to the UL-94V-0 level (3). 2 mm thick). It should be noted that if the dosage is more than 0.1%, the flame retardant properties of the material will not improve the transparency of polycarbonate. In order to meet the higher flame retardant requirements, a small amount of siloxane can be added, and the amount of siloxane is 0.02% of the total formula, and the 1.6-mm thick spline flame retardancy can be reached to the ul-94v-0 level by 0.3%.
The most commonly used is polymethyl phenylsiloxane, but some siloxane affects the transparency of polycarbonate in PPFBS. PPFBS is of high price, and it is often used to replace PPFBS with partial KSS to reduce costs. For example, in polycarbonate, 0.02% of PPFBS and 0.3% of KSS can be used to achieve UL-94 V - 0 (1.6mm thick).
Polycarbonate used in sulfonate flame retardant: KSS is widely used. It contains no halogen and environmental protection economy. Added 0.05% - 0.1% can increase the concentration of polycarbonate's oxygen index from 27% to around 37%, without affecting the transparency of polycarbonate. The deficiency is that the use alone cannot meet higher flame retardant requirements. In practice, it is often used with polysiloxane, and the addition of a small amount of fluoropolymer can make the material flame retardant better.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Have certain flame retardant polycarbonate itself, on the basis of relative molecular mass and different grafting, oxygen index was 21% - 24%, flame retardant performance of UL - 94 - V - 2 levels, better than the common plastic, polycarbonate may self-extinguishing, but it is still difficult to meet some application fields such as TV, computer, printer, the chassis and the component, the transformer coil, auto parts, building materials, etc on the properties of flame retardant PC (polycarbonate). In addition, the thermal melt of the polycarbonate when it burns is very easy to cause the nearby materials to catch fire. To this end, polycarbonate must be modified.
At present, polycarbonate is mainly divided into bromine, organophosphorus, silicon, sulfonate and boron. Bromine flame retardants are gradually being restricted due to their environmental pollution. Phosphorus-containing flame retardants add large amount: 10% - 30%, most of the decomposition temperature is lower, easy corrosion mould, some can also affect the impact strength of the resin, even under the high temperature will cause yellowing of polycarbonate material, organic phosphorus flame retardants more commonly used in polycarbonate/ABS alloy.
Organosilicon compounds are considered as a kind of high - efficiency, non-toxic, low-smoke and environment-friendly flame retardant. But the cost is higher, often with other flame retardant compound use. The flame retardant efficiency of boron flame retardants is not high, usually only with polysiloxane and can achieve better results.
Polycarbonate with flame retardant sulfonate series flame retardant with high efficiency, add very little can be made of polycarbonate UL 94 V - level 0 (3.2 mm thick), is used with other flame retardants can satisfy higher flame retardant performance requirements.
The flame retardant mechanism of polycarbonate flame retardant sulfonates. The main products commonly used in industry are benzene sulfonyl benzene sulfonate (KSS), potassium perfluorobutyl sulfonate (PPFBS), 2,4,5 - trichlorobenzene sulfonate (STB).
Trixylyl Phosphate(TXP)
Chinese Name: Tris (Xylene) Phosphate, Flame Retardant TXP
English Name: Trixylyl Phosphate
Appearance: Colorless Or Light Yellow Viscous Liquid, Slightly Soluble In Water, Soluble In General Organic Solvents.
Molecular Formula: C24H27 O4 P
Molecular Weight: 410.48
Acid Value: ≤0.1
Flash Point: ≥230
Moisture%: ≤0.1%
Melting Point: 46 Deg C
Specific Gravity: 1.130 ~ 1.150
Density: 1.154g / Cm3
Flash Point: 263.8 ° C
Refractive Index: 1.550? 1.560
Color Value: (PT-CO) ≤200
Refractive Index: N20 / D 1.552
Boiling Point: 490.8 ° Cat760mmHg
Raw Materials: Xylenol, Phosphorus Trichloride, Chlorine Through Esterification, Chlorination, Hydrolysis, Distillation Steps To Get.
Packing: Net Weight 200KG / Galvanized Iron Drum (A Small Cabinet Playing With 16 Tons), 1000KG / IB Bucket (A Small Cabinet 18 Tons) Or 23 Tons ISOTANK.
Trixylyl Phosphate(TXP) Use
Phosphate Trisphenylene Phosphate Is Low, Resistant To Hydrolysis, Good Flame Retardant Can Be Used As Vinyl Resin, Cellulose Resin, Natural And Synthetic Rubber Plasticizer, Low Volatility, Good Water Resistance, Flame Retardant. Trichenylene Phosphate Use For Use In Combustible Turbine Oils, With Good Flame Resistance And Good Thermal Oxidation Safety, Good Lubricity, Extreme Pressure Antiwear Additives For Lubricants, Thickeners. Also Used For Fire-Resistant Turbine Oil, With Good Thermal Oxidation Stability, Lubricity, As A Lubricant Anti-Wear Additives, Plasticizers, But Also For Flame Retardant, Wear-Resistant, Resistant To The Mold Of The Cable, Ethylene Conveyor Belt, Artificial Leather, Foam, Flooring Materials, But Also In Metallurgy, Electricity, Mechanical Engineering And Other Aspects As A Fire-Resistant Hydraulic Oil.
The flame retardant mechanism of fire retardant can be divided into: 1. The flame retardant of gas phase, which is the free radical that inhibits the growth of chain growth in the combustion reaction; 2. Flame retardant of condensed phase, that is, the decomposition of the polymer in the solid phase and the release of flammable gas from the polymer; 3. Interrupt heat exchange. The heat generated by the polymer is carried away without feedback to the polymer, so that the polymer will no longer continuously decompose. However, the flame retardant mechanism of sulfonates on polycarbonate is different from that of the above mentioned above. At present, it is believed that it can accelerate the carbon rate of polycarbonate and promote the crosslinking of polymer molecules.
Application of polycarbonate in flame retardant sulfonates. The commonly used sulfonate flame retardants in polycarbonate include KSS, PPFBS and STB. STB is used in flame retardant and non-transparent polycarbonate materials, and its flame retardant effect is good. The STB of 0.1 % in polycarbonate, the oxygen index can reach 25% ~ 35%, and the flame retardant grade can reach UL - 94 V- 0. STB can also be used in conjunction with other flame retardants. When used alone, the contents of halogen elements in the whole system were lower than 0.15%, and in some regulations, they were included in the non-halogen materials. Currently, Metropolitan Eximchem Limited and Arichem, LLC are suppliers of the goods.
PPFBS is also a highly effective flame retardant for polycarbonate, adding 0.06% to the polycarbonate - 0.1% PPFBS can make the material flame retardant performance to the UL-94V-0 level (3). 2 mm thick). It should be noted that if the dosage is more than 0.1%, the flame retardant properties of the material will not improve the transparency of polycarbonate. In order to meet the higher flame retardant requirements, a small amount of siloxane can be added, and the amount of siloxane is 0.02% of the total formula, and the 1.6-mm thick spline flame retardancy can be reached to the ul-94v-0 level by 0.3%.
The most commonly used is polymethyl phenylsiloxane, but some siloxane affects the transparency of polycarbonate in PPFBS. PPFBS is of high price, and it is often used to replace PPFBS with partial KSS to reduce costs. For example, in polycarbonate, 0.02% of PPFBS and 0.3% of KSS can be used to achieve UL-94 V - 0 (1.6mm thick).
Polycarbonate used in sulfonate flame retardant: KSS is widely used. It contains no halogen and environmental protection economy. Added 0.05% - 0.1% can increase the concentration of polycarbonate's oxygen index from 27% to around 37%, without affecting the transparency of polycarbonate. The deficiency is that the use alone cannot meet higher flame retardant requirements. In practice, it is often used with polysiloxane, and the addition of a small amount of fluoropolymer can make the material flame retardant better.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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