Reinforced flame-retardant low-warpage PBT alloy material and preparation method thereof
An alloy material and low warpage technology are applied in the field of reinforced flame retardant and low warpage PBT alloy materials and their preparation, which can solve the problems that the products do not have flame retardant properties and the difficulty of crystalline polymer PBT, and achieve good mechanical properties, The effect of improving glass fiber orientation and reducing production costs
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[0034] The present invention also includes a method for preparing a reinforced flame-retardant low-warpage PBT alloy material, including the following steps:
[0035] Step 1: Pass polybutylene terephthalate, polycarbonate, inorganic filler, compound flame retardant, toughener, compound antioxidant, lubricant, transesterification inhibitor and anti-dripping agent through High-speed mixer mixes uniformly at high speed to obtain mixed materials;
[0036] Step 2: Add the mixed material into the main feed port of the twin-screw extruder, and the glass fiber into the side feed port of the twin-screw extruder, and then melt, extrude, cool, dry, and cut into pellets.
[0037] The temperature of each zone of the barrel of the twin-screw extruder is set to 210-250°C, and the screw speed is 350 rpm.
Example Embodiment
[0039] Example 1
[0040] (1) Weigh the components in parts by weight: PBT: 44 parts, PC: 7 parts, ordinary alkali-free glass fiber: 22 parts, calcium carbonate: 10 parts, brominated epoxy: 8.5 parts, antimony trioxide: 2 parts, ethylene-methyl acrylate copolymer: 6 parts, antioxidant 1010: 0.1 part, antioxidant 168: 0.1 part, lubricant PETS (pentaerythritol stearate): 0.2 part, triphenyl phosphite: 0.1 part, 0.1 part of polytetrafluoroethylene;
[0041] (2) After mixing the raw materials other than glass fiber uniformly in the high-mixer, the glass fiber is fed from the side feeding port and melted and extruded through the extruder. The extrusion temperature is 210-250°C and the screw speed is 350rpm. The product is then cooled, dried, and cut into pellets.
Example Embodiment
[0042] Example 2
[0043] (1) Weigh the components by weight: PBT: 44 parts, PC: 7 parts, ordinary alkali-free glass fiber: 22 parts, kaolin: 10 parts, brominated epoxy: 8.5 parts, antimony trioxide: 2 Parts, ethylene-methyl acrylate copolymer: 6 parts, antioxidant 1010: 0.1 part, antioxidant 168: 0.1 part, lubricant PETS: 0.2 part, triphenyl phosphite: 0.1 part, polytetrafluoroethylene 0.1 part Copies
[0044] (2) After mixing the raw materials other than glass fiber uniformly in the high-mixer, the glass fiber is fed from the side feeding port and melted and extruded through the extruder. The extrusion temperature is 210-240°C, and the screw speed is 350rpm. The product is then cooled, dried, and cut into pellets.
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