VOC (Volatile Organic Compounds)-inhibited master batch for polypropylene, and preparation method and applications thereof

Abstract

The invention relates to a VOC (Volatile Organic Compounds)-inhibited master batch for polypropylene, and a preparation method thereof, and a low-VOC polypropylene composition prepared by using the VOC (Volatile Organic Compounds)-inhibited master batch. The VOC-inhibited master batch comprises the following mixed components in parts by weight: on the basis of 100 weight parts of polypropylene, 0.5-25 parts of benzofuranone free radical trapping agent, 1-40 parts of fully-vulcanized powder silicone rubber, wherein the average particle size of rubber particles in the fully-vulcanized powder silicone rubber is 0.05-1 micrometers, and the gel content is 60wt% or above. The VOC-inhibited master batch can be master-batched by melting and mixing through adding the benzofuranone free radical trapping agent and the fully-vulcanized powder silicone rubber, so that the dispersion effect of the benzofuranone free radical trapping agent can be improved, the efficiency for inhibiting VOC can be further improved, the content of total volatile organic compound in the polypropylene can be remarkably reduced, and the problem of residual volatile organic matters in the polypropylene composition can be solved.

Description

technical field [0001] The invention relates to the field of plastics, in particular to a volatile organic compound (VOC) inhibiting masterbatch for polypropylene and a preparation method and application 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 all have the problems of releasing volatile organic compounds (VOC) to pollute the environment and endanger people's health in varying degrees, which largely limits the use of polypropylene materials in high-end automobiles 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 ...

AI Technical Summary

Problems solved by technology

Chinese patents CN 1727389A and CN 1727390A respectively use fine-pore silica gel and molecular sieve as adsorbents to reduce the odor of materials and the volatilization of organic compounds. The products prepared by this method can play some roles, 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

Chinese patent CN 101570612A reduces VOC content by adding an inorganic photocatalyst to decompose small organic molecules, but its effect is limited

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

However, none of the above methods considered the impact of processing aids on VOC, so they cannot fundamentally solve the problem of VOC produced by various factors

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