A kind of low VOC polypropylene resin composition and preparation method thereof

Abstract

The invention relates to a low VOC polypropylene resin composition and a preparation method thereof. The low VOC polypropylene resin composition comprises the following co-mixed ingredients: 100 parts by weight of polypropylene, 0.1-5 parts by weight of a VOC inhibitor, and 0.05-1 part by weight of an acid-absorbing agent. The VOC inhibitor comprises the following ingredients by the weight percentage based on the total weight of the VOC inhibitor: 30%-70% of a fully vulcanized powder silicon rubber, 10%-65% of a zeolite powder, and 5%-40% of pseudo-boehmite. The average particle size of rubber particles of the fully vulcanized powder silicon rubber is 0.05-1 [mu]m, the fully vulcanized powder silicon rubber has a cross-linking structure, and the gel content is 60 wt% or higher. The VOC polypropylene resin composition is simple in operation process, and is applicable to the fields of high-class automotive interior trim parts, medical and food package materials and the like with higher requirements on environmental protection.

Description

technical field [0001] The present invention relates to a polypropylene resin composition, more specifically, to a polypropylene resin composition with low VOC content and a preparation method thereof. Background technique [0002] Polypropylene (PP) has been widely used in various fields of people's life because of its excellent comprehensive properties, wide range of sources, high quality and low price. However, the existing polypropylene materials and products have the problems of releasing volatile organic compounds (VOC) to varying degrees to pollute the environment and endanger people's health, which largely limits the use of polypropylene materials in high-end cars with high environmental protection requirements. Applications in fields such as decorative parts, medical and food packaging materials. Therefore, the research and development of environmentally friendly low-VOC polypropylene resin and materials can expand the application field of PP and meet the requireme...

AI Technical Summary

Problems solved by technology

Chinese patent (CN101255252A) reduces the VOC of the material by adding an organic repellant such as isopropanol / water, but this method has compatibility and persistence problems

For example, Chinese patents (CN1727389A, CN1727390A) disclose the use of fine-pore silica gel and molecular sieves as adsorbents to reduce the odor of materials and the volatilization of organic compounds. The products prepared by this method can play a certain role, but there is a problem of adsorption balance. , at a higher temperature, the equilibrium moves to the direction of desorption, and there is a hidden danger of re-release of VOC in the later stage of polypropylene material

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