PP composite material with low VOC and high performance specially used for automotive upholsteries and preparation method thereof

Abstract

The invention belongs to a polypropylene (PP) composite material with a low volatile organic compound (VOC) and high performance specially used for automotive upholsteries and a preparation method thereof, relating to the automobile field. The special material is prepared from the following components by mass percent: 60-80% of polypropylene (PP), 10-25% of reinforcing filler, 10-15% of flexibilizer, 0.2-0.5% of antioxidant and 0.1-0.5% of light stabilizer. The total volatile organic compound (TVOC) of the polypropylene composite material obtained in the invention is less than 40 mu gC / g; the notch impact strength of a cantilever beam under 23 DEG C is 15-40kJ / m2; the flexural modulus is 1500-2300MPa; the melt index is more than 10g / 10min at a temperature of 230 DEG C and at a weight of 2.16kg; and the composite material has favorable light and heat stability, low VOC, few components, low cost, good performance, easy preparation and can be widely used in the production of automotive upholsteries.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an automobile interior decoration material and a preparation method thereof. Background technique [0002] With the increasingly stringent requirements for material performance in the automotive industry, environmentally friendly low-VOC materials have become one of the hot spots and directions for the development of automotive interior materials. Automotive interior parts are generally modified PP composite materials, and the main reasons for the generation of VOC are: (1) PP resin. Conventional high-flow PP resin is generally produced by organic peroxide degradation method, and the residual peroxide in the resin will react to generate organic volatiles such as alcohol and aldehyde; (2) processing aids and their compatibility with the matrix PP resin. Processing aids with poor heat resistance and poor compatibility with the matrix resin will produce VOC through precipitation and vola...

AI Technical Summary

Problems solved by technology

[0003] At present, there is little research on low-VOC automotive materials in China, and there are only a few reports on low-odor automotive materials, such as the Chinese patent "High-performance and low-odor automotive dashboard special polypropylene and its preparation method", patent application number: 200510024840.2, report The low odor of the material is reduced by adding adsorbents such as porous molecular sieves, but the products produced in this way have problems with adsorption balance; Chinese patent "Special Materials for Low Emission Automotive Interior Parts and Its Preparation Method", patent application number: 200810023327.5 , reported that the low odor of the material can be reduced by adding an organic repellant such as isopropanol / water, but this method has compatibility and persistence problems

[0004] Therefore, how to make the material have comprehensive and durable low VOC emission and meet the high performance requirements of automotive special materials will have important practical application value, and the relevant methods have not been reported yet.