Low VOC polypropylene composite material for vehicle and preparation method thereof

Abstract

The present invention relates to a low VOC polypropylene composite material for vehicle and a preparation method thereof. The polypropylene composite material comprises the following blended components, calculated by 100 weight parts of the polypropylene: 10-35 parts of toughening agent, 10-35 parts of ultra-fine talcum powder and 1-5 weight parts of fully vulcanized powder silicon rubber. The toughening agent is at least one selected from ethylene octene copolymer and EPDM; the fully vulcanized powder silicon rubber is selected from full vulcanized powder silicon rubber with average grain size of 0.05-1 mum, homogeneous structure and gel content of 60 wt% or higher; the ultra-fine talc powder has an average size of 1-13 mum. The polypropylene composite material of the invention is added with fully vulcanized powder silicon rubber to realize faster and better extraction of organic volatile matters during a vacuum pumping process and well solve a problem of to volatile organic residuals in the composite material, thereby preparing the low VOC polypropylene composite material.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a low-VOC polypropylene composite material and a preparation method thereof. Background technique [0002] Among many automotive plastics, polypropylene has the characteristics of light weight, low price, large design freedom, easy processing, and recyclability, and the rapid development of polypropylene modification technology makes its performance diverse and adaptable to various automotive parts. performance requirements. Therefore, modified polypropylene material is one of the varieties with the largest amount and the fastest development speed in automotive plastics. Among them, polypropylene for interior parts such as instrument panels, control panels, door panels, seat parts, glove boxes and air-conditioning systems accounts for more than 2 / 3 of the polypropylene materials used in automobiles. However, polypropylene is affected by factors such as catalysts and p...

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Problems solved by technology

The product made by this method can play some role, but there is a problem of adsorption balance, and the balance moves to the direction of desorption at a higher temperature, causing the volatilization of volatile organic compounds; Chinese patent (CN 101691435A) is passed The use of copolymerized polypropylene produced by a specific hydrogen modulation method to produce low-VOC polypropylene composite materials has great limitations for raw materials; Chinese patent (CN101570612A) decomposes small organic molecules by adding an inorganic photocatalyst, Reduce VOC content, but its effect is limited

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