Application of nucleating agent to reducing VOC (Volatile Organic Compounds) in polypropylene composite

Abstract

The invention discloses application of a nucleating agent to reducing VOC (Volatile Organic Compounds) in a polypropylene composite. The polypropylene composite comprises 70 parts of polypropylene and0.1-1.5 parts of the nucleating agent by weight; and the nucleating agent is chosen from one of an alpha nucleating agent and a beta nucleating agent. The nucleating agent is added in the polypropylene, the degree of crystallinity of the polypropylene composite is improved, as the content of a small molecule volatile substance is less in a crystallization region than in a noncrystalline region, therefore, the content of the small molecule volatile substance in the polypropylene composite is reduced, and the odor and the VOC are not increased after the polypropylene composite is heated and melted again.

Description

technical field [0001] The invention relates to the technical field of new polymer materials, in particular to the application of nucleating agents in reducing VOC in polypropylene composite materials. Background technique [0002] With the continuous improvement of people's living standards, people pay more and more attention to health issues. Therefore, higher requirements are put forward for the air quality of the living environment, working environment and vehicle interior environment that are closely related to life. Among them, in order to improve the air quality of the car interior environment, many OEMs have introduced targeted emissions of various interior components (including odor and VOC: volatile organic compounds (Volatile organic compounds, referred to as VOC), TVOC is volatile organic compounds The control requirements of the total amount of detection), and the polypropylene material is an important part of the interior parts, and its sporadic state will dire...

AI Technical Summary

Problems solved by technology

The disadvantage of the removal method is that it has high requirements for equipment and processes, and it needs to prepare a special extraction agent in advance and equip a special vacuum device; the disadvantage of the adsorption method is that it needs to add an adsorbent during the processing, and the adsorbent has selective adsorption. , it only works on one or several small molecular substances, it cannot make all the small molecular substances be adsorbed, and the mechanical properties will be reduced to a certain extent after adding; the defect of the baking method is that it needs Equipped with special baking equipment, even if baking can remove most of the small molecular substances contained in the material particles, but because the polypropylene material will be heated and melted again during the injection molding process, new small molecular substances will be produced to affect the emission

[0005] In summary, the existing methods to reduce the emission of polypropylene materials have limitations