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

A technology of pre-dispersing masterbatch particles and automobile sealing strips, which is applied in the field of rubber additives, can solve the problems of difficulty in uniform dispersion of dust, quality and energy consumption, increased scorching and frosting of rubber materials, and strong odor of automobile sealing strips, etc., to achieve The effects of improving mixing efficiency and finished product quality, reducing ingredient deviation, and improving vulcanization efficiency

Active Publication Date: 2014-05-28
NINGBO ACTMIX POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Pre-dispersed masterbatch particles of environmental protection comprehensive accelerator for automobile sealing strips, including the following ingredients in parts by weight: 10 parts of dibenzothiazole disulfide, 10 parts of O, O-dibutyl zinc dithiophosphate, 10 parts of dibenzyl dithiophosphate 10 parts of zinc thiocarbamate, 1 part of N-phenyl-N-[(trichloromethyl)thio]benzenesulfonamide, 2 parts of EPDM rubber, and 2 parts of cis-polyisoprene.

[0017] The preparation method of the environmental protection comprehensive accelerant predispersed masterbatch of the automobile sealing strip described in embodiment 1 formula comprises the steps:

[0018] 1) Weigh the raw materials of the first mixture: 10 parts of dibenzothiazole disulfide, 10 parts of O, O-dibutyl zinc dithiophosphate, 10 parts of zinc dibenzyl dithiocarbamate, N-phenyl- 1 part of N-[(trichloromethyl)thio]benzenesulfonamide, and the weighed 4 kinds of first mixture raw materials (that is, 10 parts of t...

Embodiment 2

[0022] Pre-dispersed masterbatch particles of environmental protection comprehensive accelerator for automobile sealing strips, including the following ingredients in parts by weight: 20 parts of dibenzothiazole disulfide, 20 parts of O, O-dibutyl zinc dithiophosphate, 20 parts of dibenzyl dithiophosphate 20 parts of zinc thiocarbamate, 5 parts of N-phenyl-N-[(trichloromethyl)thio]benzenesulfonamide, 4 parts of EPDM rubber, and 4 parts of cis-polyisoprene.

[0023] The preparation method of the environmental protection comprehensive accelerant predispersed masterbatch of the automobile sealing strip described in embodiment 1 formula comprises the steps:

[0024] 1) Weigh the raw materials of the first mixture: 20 parts of dibenzothiazole disulfide, 20 parts of O, O-dibutyl zinc dithiophosphate, 20 parts of zinc dibenzyl dithiocarbamate, N-phenyl- 5 parts of N-[(trichloromethyl)thio]benzenesulfonamide; and the weighed 4 kinds of first mixture raw materials (that is, 20 parts of...

Embodiment 3

[0028] Pre-dispersed masterbatch particles of environmental protection comprehensive accelerator for automobile sealing strips, including the following ingredients in parts by weight: 30 parts of dibenzothiazole disulfide, 30 parts of O, O-dibutyl zinc dithiophosphate, 30 parts of dibenzyl dithiophosphate 30 parts of zinc thiocarbamate, 10 parts of N-phenyl-N-[(trichloromethyl)thio]benzenesulfonamide, 5 parts of EPDM rubber, and 5 parts of cis-polyisoprene.

[0029] The preparation method of the environmental protection comprehensive accelerant predispersed masterbatch of the automobile sealing strip described in embodiment 1 formula comprises the steps:

[0030] 1) Weigh the raw materials of the first mixture: 30 parts of dibenzothiazole disulfide, 30 parts of O, O-dibutyl zinc dithiophosphate, 30 parts of zinc dibenzyl dithiocarbamate, N-phenyl- 10 parts of N-[(trichloromethyl)thio]benzenesulfonamide, and weighed 4 kinds of first mixture raw materials (that is, 30 parts of t...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/47C08K5/5398C08K5/39C08L23/16C08L47/00C08J3/22
Inventor 连千荣
Owner NINGBO ACTMIX POLYMER
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