Polypropylene composite material and preparation method thereof
A composite material and polypropylene technology, applied in the field of polypropylene composite materials and its preparation, can solve problems such as gloss reduction, limit material performance and application range, and achieve stable product performance, high dimensional stability, and good toughness.
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[0052] Based on the same inventive concept, the application also discloses a method for preparing a polypropylene composite material, comprising the following steps:
[0053] Weigh raw materials: weigh 10-50wt.% homopolypropylene, 5-45wt.% copolymerized polypropylene, 15-40wt.% filler, 2-10wt.% toughening agent, 1-5wt.% Compatibilizer, 0.1-0.5wt.% antioxidant and 0.1-1wt.% other additives;
[0054] Mix at a medium speed, add the prepared polypropylene copolymer, toughening agent, compatibilizer, and antioxidant into a medium-speed mixer, mix at a speed of 200-400rpm for 3-5min, and mix well to obtain a mixture;
[0055] High-speed mixing, put the mixture into the high-speed mixer, then continue to add the prepared homopolypropylene and other additives into the high-speed mixer, mix at 600-800rpm for 3-5min, and mix evenly to obtain Mixture 2: During the high-speed mixing process, part of the filler material can be added at the same time, the filler material is specifically a ...
Embodiment 1
[0062] Weigh 50wt.% homopolypropylene, 20.9wt.% copolymerized polypropylene, 5wt.% calcium carbonate and 15wt.% glass fiber, 6wt.% ethylene-octene copolymer, 2wt. % maleic anhydride grafted polypropylene, a mixture of 0.22wt.% antioxidant 1010 and antioxidant 626, 0.2wt.% lubricant polypropylene wax, 0.3wt.% light stabilizer and 0.4wt. % of toner, wherein the mass ratio of antioxidant 1010 and antioxidant 626 is 1:1.2;
[0063] Add the prepared copolymerized polypropylene, toughening agent, compatibilizer, and antioxidant into a medium-speed mixer, mix at a speed of 300 rpm for 3 minutes, and mix uniformly to obtain a mixture 1;
[0064] As soon as the mixture is put into the high-speed mixer, the prepared homopolypropylene, lubricant, light stabilizer and toner and 5wt.% calcium carbonate continue to be added to the high-speed mixer, and mixed at 650rpm 5min, mix well, obtain mixture 2;
[0065] The mixture 2 was put into a cold mixer for cold mixing, and the rotation speed...
Embodiment 2
[0068] Weighing 50wt.% homopolypropylene, 10.9wt.% copolymerized polypropylene, 10wt.% calcium carbonate and 20wt.% glass fiber, 6wt.% ethylene-octene copolymer, 2wt.% The mixture of maleic anhydride grafted LDPE, 0.2wt.% of antioxidant 1010 and antioxidant 626, 0.2wt.% of lubricant polypropylene wax, 0.3wt.% of light stabilizer and 0.4wt.% of Toner, wherein the mass ratio of antioxidant 1010 and antioxidant 626 is 1:1.2;
[0069] Add the prepared copolymerized polypropylene, toughening agent, compatibilizer, and antioxidant into a medium-speed mixer, mix at a speed of 300 rpm for 3 minutes, and mix uniformly to obtain a mixture 1;
[0070] As soon as the mixture is put into the high-speed mixer, the prepared homopolypropylene, lubricant, light stabilizer and toner and 5wt.% calcium carbonate continue to be added to the high-speed mixer, and mixed at 650rpm 5min, mix well, obtain mixture 2;
[0071] The mixture 2 was put into a cold mixer for cold mixing, the speed of the co...
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Abstract
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