Moulding-grade wood-plastic composite and processing process
A wood-plastic composite material, injection molding technology, applied in the coating and other directions, can solve the problems of injection molding, single product shape, poor surface quality, etc., and achieves good molding performance, strong wood feeling, and high impact resistance. Effect
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Embodiment 1
[0029] (1) Process
[0030] Process recipe
[0031] ① 100 parts by mass of regenerated PP;
[0032] ② 80 parts by mass of wood flour (100-200 mesh in particle size);
[0033] ③ Chlorinated polyethylene 5.0 parts by mass;
[0034] ④ 5.0 parts by mass of polyethylene wax;
[0035] ⑤ 1.0 parts by mass of stearic acid;
[0036] 6. Nanoscale calcium carbonate, aluminum hydroxide 4.0 parts by mass (ratio 1: 1) through coupling treatment;
[0037] ⑦15.0 parts by mass of dibutyl phthalate;
[0038] ⑧ The amount of maleic anhydride grafted polypropylene with a molecular weight of 0.5-30,000 is 15.0-18.0 parts by mass.
[0039] After the above materials are fully mixed at low speed (300-400 rpm), high speed (1500-1800 rpm), and low speed (400-500 rpm) for 5-6 minutes, 25-30 minutes, and 5-6 minutes, A composite material premix is obtained. After being extruded and granulated by an extruder, special materials for injection molding wood-plastic composite materials can be obtaine...
Embodiment 2
[0051] (1) Process
[0052] Process recipe
[0053] ① regenerated PVC) 100 parts by mass;
[0054] ②Wood powder (particle size 100-200 mesh) 80-90 parts by mass;
[0055] ③ Chlorinated polyethylene 10.0 parts by mass;
[0056] ④ 0.5 parts by mass of polyethylene wax;
[0057] ⑤ 1.0 parts by mass of zinc stearate;
[0058] 6. 8.0 parts by mass (ratio 3: 1) of nanoscale calcium carbonate and aluminum hydroxide treated by coupling;
[0059] ⑦ Dioctyl phthalate 5.0 parts by mass;
[0060] ⑧ 20.0 parts by mass of maleic anhydride grafted polypropylene with a molecular weight of 0.5-30,000.
[0061] After the above materials are thoroughly mixed at low speed (500-600 rpm), high speed (2300-2500 rpm), and low speed (500-600 rpm) for 5-6 minutes, 25-30 minutes, and 5-6 minutes, the obtained Composite premixes. After being extruded and granulated by an extruder, special materials for injection molding wood-plastic composite materials can be obtained.
[0062] (2) Implementatio...
Embodiment 3
[0073] (1) Process
[0074] Process recipe
[0075] ① 100 parts by mass of regenerated HDPE;
[0076] ② 130 parts by mass of wood flour (100-200 mesh in particle size);
[0077] ③ 5 parts by mass of chlorinated polyethylene;
[0078] ④ 0.5 parts by mass of polyethylene wax;
[0079] 5.0 parts by mass of lead stearate;
[0080] 6. 4.0 parts by mass (ratio 1: 3) of nano-scale alumina and talcum powder treated by coupling;
[0081] ⑦ Dioctyl phthalate 15.0 parts by mass;
[0082] ⑧ 5.0 parts by mass of maleic anhydride grafted polyethylene with a molecular weight between 0.5 and 30,000.
[0083] After the above materials are thoroughly mixed at low speed (400-500 rpm), high speed (1700-1800 rpm), and low speed (400-500 rpm) for 5-6 minutes, 25-30 minutes, and 5-6 minutes, the obtained Composite premixes. After being extruded and granulated by an extruder, special materials for injection molding wood-plastic composite materials can be obtained.
[0084] (2) Implementation...
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