Chemical substance-resistant low odor polypropylene composite material and preparation method thereof

Abstract

The invention discloses a chemical substance-resistant low odor polypropylene composite material. The polypropylene composite material comprises, by weight, 55-90 parts of polypropylene, 5-10 parts ofpolyethylene and 5-25 parts of a filler, and the filler comprises magnesium silicate. All components and contents thereof in the polypropylene composite material interact with each other, and the filler is selected reasonably, so the polypropylene composite material has good chemical substance resistance, low odor and other good comprehensive performances, keeps excellent mechanical performances,and is especially suitable for automotive interior parts. The invention also discloses a preparation method of the chemical substance-resistant low odor polypropylene composite material.

Description

technical field [0001] The invention relates to a polypropylene composite material and a preparation method thereof, in particular to a chemical-resistant, low-odor polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP for short) is a semi-crystalline thermoplastic made by propylene polymerization. As a commonly used polymer thermoplastic material, polypropylene material has low density, low water absorption, good acid and alkali resistance, and physical properties. Excellent performance, easy availability of raw materials, cheap price and other advantages, widely used in construction, packaging, automobile and other industries. According to the "Energy Saving and New Energy Vehicle Industry Development Plan (2012-2020)" promulgated by our country, whether it is a traditional fuel vehicle or a new energy vehicle, the development and application of lightweight automotive materials is imperative. Polypropylene mater...

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Problems solved by technology

The application background of polypropylene materials for automobiles is diverse, such as dashboards, pillars and glove boxes in automobile interiors, which are more or less exposed to commonly used chemicals such as gasoline, liquid paraffin, sunscreen, detergents, etc. However, polypropylene materials have poor resistance to non-polar chemicals; at the same time, the odor of automotive interiors has always been the focus of consumers' attention. Excellent automotive interiors should be non-toxic and low-odor

Chinese patent CN105255088B uses polypropylene resin, acrylic acid, styrene, and dicumyl peroxide to prepare acrylic styrene grafted polypropylene, and then passes through a high-speed mixer and internal mixer with carboxylated nitrile rubber, amino-terminated liquid nitrile rubber, etc. , Parallel twin-screw extruder granulator to prepare heat-resistant, oil-resistant, acid-alkali-resistant modified polypropylene, but this kind of polypropylene composition has many processing steps and the process cannot be continuous, the production efficiency is low, and it is not suitable for large-scale rapid Production

However, the production of this material requires multiple extrusion granulation and mixing, the steps are complicated and not conducive to large-scale production, and this material is mainly used for cables

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