Pre-dispersion master colloidal particles of environment-friendly comprehensive promoter used for automobile sealing strips, and preparation thereof

Abstract

The invention discloses pre-dispersion master colloidal particles of an environment-friendly comprehensive promoter used for automobile sealing strips. The pre-dispersion master colloidal particles comprises, by weight, 10-30 parts of a thiazole promoter, 10-30 parts of a zinc dialkyl dithiophosphate promoter, 10-30 parts of a thiocarbamate promoter, 1-10 parts of a scorch retarder, 2-5 parts of ethylene-propylene-diene monomers and 2-5 parts of cis-polyisoprene. The invention also discloses a preparation method for the pre-dispersion master colloidal particles of the environment-friendly comprehensive promoter used for the automobile sealing strips. The pre-dispersion master colloidal particles of the environment-friendly comprehensive promoter used for the automobile sealing strips are prepared by mixing powdery comprehensive promoters with a polymer carrier, so that during a use process, the pre-dispersion master colloidal particles have better dispersibility, more excellent vulcanization efficiency, are not easy to scorch and crock, do not generate carcinogenic nitrosamine, are environment-friendly, and can increase batch qualification rate of finished products.

Description

technical field [0001] The invention relates to a rubber additive, in particular to a pre-dispersed masterbatch of an environmental protection comprehensive accelerator for automobile sealing strips and a preparation method thereof. Background technique [0002] In order to improve the vulcanization efficiency and good physical properties of the rubber compound in the production of automotive sealing strips, it is generally necessary to use an accelerator system with high reactivity and high dosage. The commonly used accelerator system is based on derivatives of thiuram and dithiocarbamate. However, such products can form carcinogenic nitrosamines during the vulcanization process, and increase the possibility of scorching and frosting of the rubber, and the automobile sealing strips made of them have a strong smell. [0003] At the same time, this traditional powder accelerator produces a lot of dust during the mixing and vulcanization process and is difficult to uniformly d...

AI Technical Summary

Problems solved by technology

[0002] In order to improve the vulcanization efficiency and good physical properties of the rubber compound in the production of automotive sealing strips, it is generally necessary to use an accelerator system with high reactivity and high dosage. The commonly used accelerator system is based on derivatives of thiuram and dithiocarbamate. However, such products can form carcinogenic nitrosamines during the vulcanization process, and increase the possibility of rubber scorching and blooming, and the automobile sealing strips made of them have a strong smell

[0003] At the same time, this traditional powder accelerator produces a lot of dust during the mixing and vulcanization process and is difficult to disperse evenly in the rubber, so it has a series of quality and energy consumption problems.