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Method of solving blooming problem during production of rubber

A problem, rubber technology, applied in the field of rubber sealing materials, can solve problems such as the problem of frost spray, and achieve the effect of solving the problem of frost spray

Inactive Publication Date: 2015-10-14
天津滨海新区大港汇丰汽车装饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a method to solve the problem of blooming in rubber production, to prevent the blooming problem caused by anti-aging agents and accelerators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Two kinds of accelerators and anti-aging agents are used together, and the weight ratio of raw materials is: 21 parts of ethylene propylene rubber, 13 parts of carbon black, 4 parts of calcium carbonate, 4.4'-bis(α.α-dimethylbenzyl) diphenylamine ( KY-405) 0.2 parts, polyethylene glycol (PEG-4000) 0.3 parts, dispersant polyethylene wax 0.3 parts, accelerator di-n-butylzinc dithiocarbamate (BZ) 0.3 parts, accelerator dimethyl Zinc dithiocarbamate (PZ) 0.1 part, vulcanizing agent sulfur 0.1 part, flame retardant polyammonium phosphate 0.15 part.

[0015] Put the ethylene-propylene rubber in the mixer for 70 seconds, add KY-405 and mix for 30 seconds, add carbon black, calcium carbonate, paraffin oil, PEG-4000, polyethylene wax and mix for 60 seconds to get a rubber. The temperature of mastication and mixing is controlled at 120°C. Put the first-stage rubber on the open mill, add BZ, PZ, vulcanizing agent sulfur and flame retardant polyphosphate ammonium fat, and knead at...

Embodiment 2

[0017] Two kinds of accelerators and anti-aging agents are used together, and the weight ratio of raw materials is: 21 parts of ethylene propylene rubber, 10 parts of carbon black, 3 parts of calcium carbonate, 4.4'-bis(α.α-dimethylbenzyl) diphenylamine (KY -405) 0.1 part, polyethylene glycol (PEG-4000) 0.1 part, dispersant polyethylene wax 0.15 part, accelerator di-n-butylzinc dithiocarbamate (BZ) 0.15 part, accelerator dimethyl dithiocarbamate (BZ) 0.15 part, accelerator dimethyl dithiocarbamate Zinc thiocarbamate (PZ) 0.1 part, vulcanizing agent sulfur 0.2 part, flame retardant polyammonium phosphate 0.3 part.

[0018] Put the ethylene-propylene rubber in the mixer for 80 seconds, add KY-405 and mix for 40 seconds, add carbon black, calcium carbonate, paraffin oil, PEG-4000, polyethylene wax and mix for 120 seconds to get a rubber. The temperature of mastication and mixing is controlled at 140°C. Put the first-stage rubber on an open mill, add BZ, PZ, sulfur as a vulcanizi...

Embodiment 3

[0020] Two kinds of accelerators and anti-aging agents are used together, and the weight ratio of raw materials is: 21 parts of ethylene propylene rubber, 10 parts of carbon black, 4 parts of calcium carbonate, 4.4'-bis(α.α-dimethylbenzyl) diphenylamine (KY -405) 0.1 part, polyethylene glycol (PEG-4000) 0.2 part, dispersant polyethylene wax 0.15 part, accelerator di-n-butylzinc dithiocarbamate (BZ) 0.3 part, accelerator dimethyl dithiocarbamate (BZ) 0.3 part, accelerator dimethyl dithiocarbamate Zinc thiocarbamate (PZ) 0.08 part, vulcanizing agent sulfur 0.15 part, flame retardant polyammonium phosphate 0.3 part.

[0021] Put the ethylene-propylene rubber in the mixer for 80 seconds, add KY-405 and mix for 30 seconds, add carbon black, calcium carbonate, paraffin oil, PEG-4000, polyethylene wax and mix for 60 seconds to get a rubber. The temperature of mastication and mixing is controlled at 140°C. Put the first-stage rubber on the open mill, add BZ, PZ, vulcanizing agent sul...

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Abstract

A method of solving blooming problem during production of rubber aims to solve the blooming problem caused by accelerants and anti-aging agents. According to the method, ethylene-propylene rubber is employed as a basic raw rubber material and is matched with following components, in certain amounts, carbon black, calcium carbonate, an anti-aging agent polyethylene glycol, an anti-aging agent 4,4'-bis([alpha],[alpha]-dimethylbenzyl)diphenylamine, a dispersing agent, a vulcanizing agent, an accelerant zinc dimethyldithiocarbamate and zinc dibutyldithiocarbamate, and a flame retardant. A rubber sealing material is prepared through internal mixing and open milling. Because the two anti-aging agents and the two accelerants are matched and each agents are in the range of the solubility of the ethylene-propylene rubber, the agents are free of a large use amount for achieving an expected effect of the anti-aging agents and the accelerants without excessive solubility of the ethylene-propylene rubber, thereby fundamentally solves the blooming problem caused by the anti-aging agents and the accelerants.

Description

[0001] technical field [0002] The invention relates to the field of rubber sealing materials and is applied to solve the problem of blooming caused by accelerators and anti-aging agents. Background technique [0003] In the preparation of the current rubber sealing material, since the polarity and structure of the molecules of the accelerator and the anti-aging agent are quite different from those of the ethylene-propylene rubber, the compatibility of the accelerator and the anti-aging agent with the rubber is poor. When the solubility is high, it is easy to produce ejection phenomenon. Using only one anti-aging agent and accelerator can achieve the desired effect of rubber, that is, the anti-aging agent can increase the coagulation and anti-aging effect of rubber, and the accelerator can promote the effect of vulcanization. Accelerators and anti-aging agents must be used in large quantities, so it is easy to produce blooming phenomenon and affect the quality of sealing ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L71/08C08K13/02C08K5/18C08K5/39C08K3/04C08K3/26C08K3/06
CPCC08L23/16C08K2201/014C08L2205/03
Inventor 顾正
Owner 天津滨海新区大港汇丰汽车装饰有限公司
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