A kind of continuous fiber reinforced wood-plastic and its preparation method
A continuous fiber and wood-plastic technology, applied in the field of materials, can solve the problems of insignificant reinforcement effect and inability to exert the effect of long fiber reinforcement, and achieve the effect of improved mechanical properties and good compatibility
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Embodiment 1
[0017] S1, surface modified long fiber: mix 10 parts of maleic anhydride, 70 parts of epoxy resin prepolymer, 20 parts of N, N-m-phenylene bismaleimide to make a modifier and put it in a solvent In the tank, then pass the long roll of glass fiber through the solvent tank at a speed of 1m / min, the fiber is immersed in the modifier, and then the fiber is dried into rolls through a microwave oven at a speed of 1m / min, and the drying temperature is 70°C; The three raw materials of the modifier all react with the surface of the long fiber, so the modified long fiber has good compatibility with wood-plastic, so that it can be successfully applied to wood-plastic materials;
[0018] S2, granulation: 55 parts of wood fiber, 35 parts of waste plastic PE, 5 parts of maleic anhydride grafted PE compatibilizer, and 5 parts of lubricant are mixed and granulated;
[0019] S3. Extrusion: Add the material after granulation in step S2 into a conical twin-screw extruder for extrusion molding. T...
Embodiment 2
[0021] Embodiment 2 is roughly the same as Embodiment 1, except that the component content and process parameters are different, as follows.
[0022] S1, surface modified long fiber: mix 20 parts of maleic anhydride, 50 parts of epoxy resin prepolymer, 30 parts of N, N-m-phenylene bismaleimide to make a modifier and put it in a solvent In the tank, the long roll glass fiber is passed through the solvent tank at a speed of 2m / min, the fiber is immersed in the modifier, and then the fiber is dried into a roll through a microwave drying oven at a speed of 3m / min, and the drying temperature is 80°C;
[0023] S2. Granulation: 64 parts of wood fiber, 30 parts of waste plastic PE, 3 parts of maleic anhydride grafted PE compatibilizer, and 3 parts of lubricant are mixed and granulated;
[0024] S3. Extrusion: Add the material after granulation in step S2 into a conical twin-screw extruder for extrusion molding. The conical twin-screw extruder has four zones arranged in sequence accord...
Embodiment 3
[0026] Embodiment 3 is roughly the same as Embodiment 1, except that the component content and process parameters are different, as follows.
[0027] S1. Surface modification of long fibers: Mix 20 parts of maleic anhydride, 60 parts of epoxy resin prepolymer, and 20 parts of N, N-m-phenylene bismaleimide to make a modifier and place it in a solvent In the tank, the long roll of aramid fiber is passed through the solvent tank at a speed of 1.5m / min, the fiber is immersed in the modifier, and then the fiber is dried into a roll through a microwave drying oven at a speed of 2m / min, and the drying temperature is 60 ℃;
[0028] S2. Granulation: 40 parts of wood fiber, 35 parts of waste plastic PP, 4 parts of maleic anhydride grafted PE compatibilizer, and 3 parts of lubricant are mixed and granulated;
[0029] S3. Extrusion: Add the material after granulation in step S2 into a conical twin-screw extruder for extrusion molding. The conical twin-screw extruder has four zones arrang...
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