Bamboo fiber reinforced thermoplastic resin composite material and preparation method thereof
A resin composite material and enhanced thermoplastic technology, applied in the field of composite materials, can solve the problems of poor impact resistance, poor rigidity, poor heat resistance, etc., achieve good wear resistance, wear resistance and high temperature resistance, and improve the effect of reinforcement
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[0054] (1) Preparation of modified bamboo fiber and modified filler: a certain amount of bamboo fiber is dried and then pulverized and sieved; the bamboo fiber after sieving is immersed in alkaline solution, stirred for 20-40 minutes, and left to stand for 36-40 minutes. After 56 hours, suction filter and wash until the lotion is neutral; dry the washed bamboo fiber, then immerse the bamboo fiber in the cyanate acetone solution, heat in a water bath at 55°C to 70°C, and stir for 0.8 to 1.5 hours. Stand still for 20 to 30 hours and then filter with suction. After drying, the bamboo fiber after suction filtration is crushed and dispersed again to prepare modified bamboo fiber for later use; the filler is dispersed in water, and a surfactant is added to the aqueous solution, and stirred for 0.5 to 1.5 Hours later, the modified filler was obtained by suction filtration and drying treatment for subsequent use;
[0055] (2) Mixing: mixing a certain amount of thermoplastic resin, mod...
Embodiment 1
[0062] Bamboo fiber reinforced thermoplastic resin composite material in the present embodiment, by weight, has the following components: 60 parts of thermoplastic resin, 20 parts of modified bamboo fiber, 6 parts of modified filler, 9 parts of toughening agent, compatibilizer 4 parts and 0.3 parts of flow modifier.
[0063] The thermoplastic resin adopts polypropylene with a molecular weight of 3000-5000. The modified filler includes modified calcium carbonate, and the particle size of the modified filler is 200-500nm. The toughening agent is an acrylate copolymer with the organosiloxane-acrylate composite rubber phase as the core and the methyl methacrylate-glycidyl methacrylate copolymer as the shell. The combination of acrylate and organosiloxane The weight ratio is 2:1, and the average particle size of the toughening agent is 250-350nm. The compatibilizer is maleic anhydride grafted ethylene-octene copolymer. Flow modifiers include N,N'-ethylene bis stearamide.
[006...
Embodiment 2
[0070] The bamboo fiber reinforced thermoplastic resin composite material in the present embodiment, by weight, has the following components: 45 parts of thermoplastic resin, 10 parts of modified bamboo fiber, 4 parts of modified filler, 6 parts of toughening agent, compatibilizer 2 parts and 0.1 part of flow modifier.
[0071] The thermoplastic resin includes polyethylene, polypropylene, polyvinyl chloride, polystyrene and acrylonitrile-styrene-butadiene, and the mass ratio of its components is 1:1:1:1:1. The molecular weight of polyethylene is 200,000-600,000, the molecular weight of polypropylene is 3,000-5,000, the molecular weight of polyvinyl chloride is 50,000-110,000, the molecular weight of polystyrene is 180,000-220,000, acrylonitrile-styrene-butadiene The molecular weight of the copolymer is 150,000 to 300,000. The modified filler includes modified calcium carbonate and modified silica, the mass ratio of the components is 1:1, and the particle size of the modified ...
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