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Ethylene propylene diene monomer with excellent processability for lifting lug and preparation method of Ethylene propylene diene monomer

A technology of EPDM rubber and processing properties, applied in the field of rubber products, can solve the problems of rubber lug product flow marks, long injection time, poor fluidity, etc., reduce the risk of scorch, increase injection speed, and reduce production costs Effect

Pending Publication Date: 2020-12-22
威固技术(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rubber hanger products usually have a large size and wall thickness. In the prior art, injection molds are generally used for vulcanization. However, some existing rubber formulations require a long injection time due to their high Mooney and poor fluidity, which may easily lead to rubber hangers. Ear products have defects such as flow marks and weld marks

Method used

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  • Ethylene propylene diene monomer with excellent processability for lifting lug and preparation method of Ethylene propylene diene monomer
  • Ethylene propylene diene monomer with excellent processability for lifting lug and preparation method of Ethylene propylene diene monomer

Examples

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Embodiment 1

[0021] A kind of EPDM rubber with excellent processability for lifting lug proposed by the present invention, its raw material comprises the following components by weight: 100 parts of low Mooney oil-extended EPDM rubber (the content of the third monomer is 6.8 %), 60 parts of carbon black, 40 parts of paraffin oil, 1 part of anti-aging agent, 1 part of lubricant, 6 parts of zinc oxide, 0.2 part of sulfur S-80, 0.7 part of accelerator TMTD, and 3.5 parts of thiazole accelerator; The thiazole accelerator is composed of accelerator DM and accelerator D according to the ratio of 1:1.

[0022] The present invention also proposes a preparation method of the EPDM rubber with excellent processing performance for the above-mentioned lifting lug, comprising the following steps:

[0023] S1. Add low Mooney oil-extended EPDM raw rubber to the internal mixer for banburying, and the banburying time is 27s; then add zinc oxide, anti-aging agent and lubricant, and mix for 27s; then add carb...

Embodiment 2

[0027] A kind of EPDM rubber with excellent processability for lifting lug proposed by the present invention, its raw material comprises the following components by weight: 100 parts of low Mooney oil-extended EPDM rubber (the content of the third monomer is 6.8 %), 70 parts of carbon black, 25 parts of paraffin oil, 1.5 parts of anti-aging agent, 1.5 parts of lubricant, 5 parts of zinc oxide, 0.4 part of sulfur S-80, 1 part of accelerator TMTD, and 3 parts of thiazole accelerator; among them, The thiazole accelerator is composed of accelerator DM and accelerator D according to the ratio of 1:1.

[0028] The present invention also proposes a preparation method of the EPDM rubber with excellent processing performance for the above-mentioned lifting lug, comprising the following steps:

[0029] S1. Add low Mooney oil-extended EPDM raw rubber to the internal mixer for banburying, and the banburying time is 30s; then add zinc oxide, anti-aging agent and lubricant, and mix for 30s;...

Embodiment 3

[0033] A kind of EPDM rubber with excellent processability for lifting lug proposed by the present invention, its raw material comprises the following components by weight: 130 parts of low Mooney oil-extended EPDM rubber (the content of the third monomer is 6.8 %), 67 parts of carbon black, 30 parts of paraffin oil, 1.5 parts of anti-aging agent, 2 parts of lubricant, 5 parts of zinc oxide, 0.5 parts of sulfur S-800, 1.2 parts of accelerator TMTD, 2.8 parts of thiazole accelerator; among them, thiazole The quasi-accelerator is composed of accelerator DM and accelerator D according to the ratio of 1:1.

[0034] The present invention also proposes a preparation method of the EPDM rubber with excellent processing performance for the above-mentioned lifting lug, comprising the following steps:

[0035] S1. Add low Mooney oil-extended EPDM raw rubber to the internal mixer for banburying, and the banburying time is 30s; then add zinc oxide, anti-aging agent and lubricant, and mix f...

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Abstract

The invention discloses an ethylene propylene diene monomer with excellent processability for a lifting lug and a preparation method of the ethylene propylene diene monomer, and relates to the technical field of rubber products. The ethylene propylene diene monomer comprises the following raw materials in parts by weight: 100-175 parts of low-Mooney oil-extended ethylene propylene diene monomer rubber, 60-80 parts of carbon black, 20-40 parts of a plasticizer, 1-3 parts of an anti-aging agent, 1-3 parts of a lubricant, 4-6 parts of zinc oxide, 0.2-0.6 part of sulfur S-80, 0.7-1.5 parts of a thiuram accelerator and 2.5-3.5 parts of a thiazole accelerator. By reducing Mooney viscosity of the formula and optimally selecting the vulcanizing agent and the accelerant, the obtained rubber material is good in flowability, and the injection speed of an injection mold during vulcanization is increased, so that the processability of a rubber lifting lug product is improved, the defects of flow marks, welding marks and the like of the product are reduced, the percent of pass and the production efficiency of the product are improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of rubber products, in particular to EPDM rubber with excellent processing performance for lifting lugs and a preparation method thereof. Background technique [0002] As the load-bearing and vibration-isolation part of the exhaust system, the rubber lug of the exhaust pipe is used to suspend the exhaust system and isolate the vibration from the exhaust system and the body. Rubber hanger products usually have a large size and wall thickness. In the prior art, injection molds are generally used for vulcanization. However, some existing rubber formulations require a long injection time due to their high Mooney and poor fluidity, which may easily lead to rubber hangers. Ear products have defects such as flow marks and weld marks. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a EPDM rubber with excellent processing perf...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/04C08K3/22C08K3/06C08K5/40C08K5/47
CPCC08L23/16C08K2003/2296C08K2201/014C08L91/06C08K13/02C08K3/04C08K3/22C08K3/06C08K5/40C08K5/47
Inventor 陈志翔邢益福彭岩
Owner 威固技术(安徽)有限公司