Low-gloss high-rigidity polypropylene compound material and preparation method thereof
A composite material and polypropylene technology, which is applied to the composition and preparation of low-gloss high-rigidity polypropylene composite materials and can solve the problem of low gloss, not high enough, low gloss and matting effect on the surface of polypropylene blended modified materials, etc. problem, to achieve the effect of low production cost
Active Publication Date: 2014-03-26
SHANGHAI PRET COMPOSITES
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Problems solved by technology
The obtained polypropylene blended modified material has low surface gloss and good matting effect, but low toughness, which limits its application in automotive interior parts
[0005] In addition, Japanese Patent Laid-Open No. 157607 / 1995 discloses polyolefin compositions comprising propylene polymers, partially crosslinked thermoplastic elastomers and ethylene-propylene-conjugated diene terpolymers, and modified olefin resins and glues. Coagulant compositions (Japanese Patent Laid-Open No. 192509 / 1994), however, for these compositions, although low gloss is achieved to a certain extent, it is still not high enough and must be gelled or cross-linked
In addition, they also have problems such as poor uniformity and difficulty in recycling
Method used
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[0031] Below in conjunction with embodiment, the present invention is described in further detail:
[0032] In the composite material formulations of Examples and Comparative Examples, the polypropylene is a block copolymer polypropylene produced by Shanghai Petrochemical, and the trade name is M2600R. The particle size range of the talcum powder, calcium carbonate or their composition is 1-10 microns. Described toughening agent POE is the linear ethylene-octene copolymer that DuPont produces, and trade name is 8180, and its density is 0.88~0.90g / cm 3 , the melt index is 0.5g / 10min (test condition: 190°C×2.16kg). The nano-montmorillonite is a layered aluminum (magnesium) silicate clay mineral, in the form of off-white powder, with a montmorillonite content of 96-98%, an average wafer row thickness of less than 20 nanometers, and a diameter / thickness ratio of 200 . The PP-g-MAH is OREVAC CA100 produced by ARKEMA Company, its graft rate is 1.0%, and its melt index is 18g / 10mi...
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Abstract
The invention relates to a low-gloss high-rigidity polypropylene compound material and a preparation method thereof. The low-gloss high-rigidity polypropylene compound material is prepared from the following raw materials by weight percent: 55-91% of polypropylene, 0-25% of inorganic filling material, 0-10% of flexibilizer, 1-5% of nano montmorillonite, 2-4% of maleic anhydride grafted polypropylene (PP-G-MAG), 0.1-1% of antioxidant and 0-1% of other auxiliary agents. The preparation method comprises the following materials: mixing the polypropylene, the inorganic filling material, the flexibilizer, the nano montmorillonite, the PP-G-MAG, the antioxidant and the auxiliary agents in a high-speed agitator after weighing the raw materials in weight proportion; putting the mixture in a twin-screw extruder, and carrying out melt extrusion; and after extrusion, cooling, drying and pelletizing so that a finished product is obtained. The low-gloss high-rigidity polypropylene compound material has the advantages of low gloss, good impact toughness and good rigidity.
Description
technical field [0001] The invention relates to a composition and a preparation method of a polypropylene composite material with low gloss and high rigidity and toughness. More specifically, the glossiness of the polypropylene composite material is reduced by adding nano-montmorillonite, and the material has high impact toughness and rigidity. The invention belongs to the technical field of polymer modification and processing. Background technique [0002] Polypropylene (PP) is a widely used general-purpose plastic because of its good processing performance, physical, mechanical, chemical and electrical insulation properties, and light weight and low price. Therefore, it is widely used in the automotive industry, especially for Automotive interior materials. With the development of the automobile industry, people have higher and higher requirements for the comfort and comfort in the cab. If the gloss of the cockpit interior parts is high, there will be strong light reflec...
Claims
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IPC IPC(8): C08L53/00C08L23/08C08L23/20C08L51/06C08K13/02C08K3/34C08K3/26B29B9/06
Inventor 康兴宾张鹰张祥福周文
Owner SHANGHAI PRET COMPOSITES