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A kind of high glow wire reinforced flame-retardant PBT composite material and preparation method thereof
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A high-glow wire and composite material technology, applied in the field of polymer composite materials and their preparation, can solve the problems of poor flame retardancy, low notch impact, and low thermal deformation temperature of pure PBT resin, and achieve good flame retardancy and finished products The effect of high efficiency and excellent mechanical properties
Active Publication Date: 2019-12-03
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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However, pure PBT resin has the disadvantages of poor flame retardancy, low notch impact, and low heat distortion temperature. The flame retardant performance of the parts must meet: UL94V-0 level and 750 ℃ glow wire contact material without fire within 30s or burning time is less than 5s, that is, the glow wire ignition temperature (GWIT) is greater than 750 ℃
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Embodiment 1
[0019] 35% by weight of PBT resin with a viscosity of 0.83dL / g, 20% by weight of brominated flame retardant (composed of 15% brominated polystyrene and 5% antimony trioxide), 20% by weight of halogen-free flame retardant Burning agent (15% OP1312 and 5% MPP composition), 2% by weight of nano-montmorillonite, 2% by weight of ethylene-butyl acrylate-glycidyl methacrylate terpolymer, 0.5% by weight of antioxidant Agent (0.3% Oxygen 1010 and 0.2% Antioxidant 168) and 0.5% by weight of EBS were put into a high-speed mixer and mixed for 1 min at a speed of 500 rpm to fully disperse them evenly. Then put the mixed material into the twin-screw extruder, and at the same time, add 20% by weight of glass fiber in the fifth zone for melt extrusion. The extrusion temperature is 210-240°C, the screw speed is 450rpm, and then cooled and air-dried , dicing, magnetization, packaging.
Embodiment 2
[0021] 38.3% by weight of PBT resin with a viscosity of 0.83dL / g, 17.5% by weight of brominated flame retardant (composed of 13% brominated polystyrene and 4.5% of antimony trioxide), 18% by weight of halogen-free flame retardant Combustion agent (14% OP1312 and 4% MPP composition), 0.5% by weight of polytetrafluoroethylene, 5% by weight of ethylene-butyl acrylate-glycidyl methacrylate terpolymer, 0.4% by weight of antioxidant Agent (0.2% Oxygen 1010 and 0.2% Antioxidant 168) and 0.3% by weight of EBS were put into a high-speed mixer and mixed for 1 min at a speed of 500 rpm to fully disperse them evenly. Then put the mixed material into the twin-screw extruder, and at the same time, add 20% by weight of glass fiber in the fifth zone for melt extrusion. The extrusion temperature is 210-240°C, the screw speed is 450rpm, and then cooled and air-dried , dicing, magnetization, packaging.
Embodiment 3
[0023] 39.3% by weight of PBT resin with a viscosity of 0.83dL / g, 10% by weight of brominated flame retardant (composed of 7% brominated polystyrene and 3% antimony trioxide), 16% by weight of halogen-free flame retardant Combustion agent (12% OP1312 and 4% MPP composition), 1% by weight of polytetrafluoroethylene, 3% by weight of ethylene-butyl acrylate-glycidyl methacrylate terpolymer, 0.4% by weight of antioxidant Agent (0.2% Oxygen 1010 and 0.2% Antioxidant 168) and 0.3% by weight of EBS were put into a high-speed mixer and mixed for 1 min at a speed of 500 rpm to fully disperse them evenly. Then put the mixed material into the twin-screw extruder, and at the same time, add 30% by weight of glass fiber in the fifth zone for melt extrusion. The extrusion temperature is 210-240 ° C, the screw speed is 450 rpm, and then cooled and air-dried , dicing, magnetization, packaging.
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Abstract
The invention relates to an enhanced flame-retardant PBT composite material for a high glowing filament and a preparation method thereof. The enhanced flame-retardant PBT composite material for the high glowing filament comprises the following components by weight percent: 35-45% of polybutylene terephthalate, 10-20% of compound brominated flame retardant, 10-20% of compound halogen-free flame retardant, 0.5-2% of synergistic flame retardant, 20-35% of glass fiber, 2-5% of toughener, 0.3-0.5% of antioxidant and 0.2-0.5% of lubricant. The invention also provides the preparation method of the enhanced flame-retardant PBT composite material for the high glowing filament. The glowing filament with enhanced flame-retardant PBT composite material in an IEC60695 standard has the temperature of 850 DEG C from 750 DEG C, thereby satisfying the requirements of customers for higher and higher temperature of the glowing filament; and meanwhile, the enhanced flame-retardant PBT composite material has the advantages of high yield, excellent mechanical properties, favorable flame retardancy and the like, and can completely satisfy the application in the fields of electronic and electrical appliances such as capacitor shells, load break switches, motor shells, socket connectors, coil formers and the like, home appliances, automobiles and the like.
Description
technical field [0001] The invention relates to a polymer composite material and a preparation method thereof, in particular to a high glow wire reinforced flame-retardant PBT composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline, linear saturated polyester. It has excellent mechanical properties, electrical properties, chemical corrosion resistance, easy molding and low moisture absorption. It is a thermoplastic engineering plastic with excellent comprehensive properties and is widely used in electronic appliances, home appliances and automobiles. However, pure PBT resin has the disadvantages of poor flame retardancy, low notch impact, and low heat distortion temperature. The flame retardant performance of the parts must meet: UL94V-0 level and 750 ℃ glow wire contact material within 30s without fire or burning time less than 5s, that is, the glow wire ignition temperature (GWIT) is greater th...
Claims
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Application Information
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