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Ethylene propylene diene monomer rubber and a preparation method thereof

A EPDM rubber and rubber technology, applied in the field of rubber materials, can solve problems such as appearance bubbles, affecting product appearance and performance, achieve stable product quality, solve the problem of product frosting, and optimize product formulations.

Inactive Publication Date: 2019-10-18
四川宏亿复合材料工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on the above analysis, the present invention discloses a formula of EPDM rubber, which aims to solve the problem of air bubbles in the appearance of the product after vulcanization caused by the formula and process of the low-hardness rubber; Problems that affect product appearance and performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A EPDM rubber

[0028] (1) One-stage internal mixing: put 32kg of EPDM rubber with brand J-4045 sold by Jilin Petrochemical Company into the internal mixer, pressurize for 2.5min, add 1.6kg of zinc oxide, 0.96kg of stearic acid, Lianyungang Ruiba Chemical The produced model RL-20 mobile dispersant is 0.48kg, the American EVERPOWER produced model PW mobile air exhaust agent is 0.48kg and pressurized for 2-3min; add 16kg of nano-calcium carbonate, 11.2kg of precipitated white carbon black, silicon-691.12kg, carbon black N77412 .8kg and 3.2kg of paraffin oil were pressurized for 4.5 minutes, and 3.2kg of paraffin oil was added to pressurize. When the banburying temperature reached 120°C, the rubber was discharged, and the lower sheet of the mill was 12mm, and it was parked for more than 6 hours to obtain the primary rubber compound;

[0029] (2) Two-stage internal mixing: Put the primary rubber material into the internal mixer and pressurize it for 2 minutes, add 0.32kg of...

Embodiment 2

[0041] A EPDM rubber

[0042] (1) One-stage internal mixing: Put 30kg of J-4045 EPDM rubber sold by Jilin Petrochemical Company into the internal mixer, pressurize for 3 minutes, and put 0.9kg of zinc oxide, 0.6kg of stearic acid, and Lianyungang Ruiba Chemical Production 0.36kg of the model RL-20 flow dispersant, 0.3kg of the American EVERPOWER model PW flow exhaust agent, pressurized for 2-3min; add 13.5kg of nano-calcium carbonate, 12kg of precipitated white carbon black, silicon-691.2kg, carbon black N77415kg and Add 3.5 kg of paraffin oil to pressurize for 6 minutes, add 4 kg of paraffin oil to pressurize, remove the rubber when the mixing temperature reaches 120 ° C, open the mill to lower the sheet to 15 mm, and park it for more than 6 hours to obtain the primary rubber material;

[0043] (2) Two-stage internal mixing: put the primary rubber into the internal mixer and pressurize for 3 minutes, add 0.3kg of sulfur and 1.05kg of compound accelerator of model EG-5 produce...

Embodiment 3

[0055] A EPDM rubber

[0056] (1) One-stage internal mixing: Put 24kg of J-4045 EPDM rubber sold by Jilin Petrochemical Company into the internal mixer, pressurize for 2 minutes, and put 1.68kg of zinc oxide, 1.2kg of stearic acid, and Lianyungang Ruiba Chemical Production The model RL-20 flow dispersant 0.6kg, the American EVERPOWER model PW flow exhaust agent 0.24kg pressurized for 2-3min; add nano calcium carbonate 16.8kg, precipitated white carbon black 12kg, silicon-69. 2kg, carbon black N774 3014.4kg and 4.6kg of paraffin oil were pressurized for 3 minutes, and 5kg of paraffin oil was added for pressurization. When the banburying temperature reached 120°C, the glue was discharged, and the lower sheet of the mill was opened to 10mm, and it was parked for more than 6 hours to obtain the primary rubber compound;

[0057] (2) Two-stage internal mixing: Put the primary rubber into the internal mixer and pressurize for 1min, add 1.2kg of sulfur and 1.2kg of compound accelerato...

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Abstract

The invention discloses ethylene propylene diene monomer rubber (EPDM) and a preparation method thereof. The ethylene propylene diene monomer rubber is prepared through one-stage mixing and two-stagemixing of 100-140 parts of ethylene propylene diene monomer, 3-7 parts of zinc oxide, 2-5 parts of stearic acid, 1-3 parts of a flow dispersant RL-20, 1-3 parts of a flow venting agent PW, 30-70 partsof nano-calcium carbonate, 20-50 parts of white carbon black, 2-5 parts of silicon 69, 30-50 parts of paraffin oil, 30-60 parts of carbon black N774, 0.7-1.5 parts of sulfur and 2-7 parts of a totalaccelerator EG-5. The EPDM rubber with low hardness, high tensile strength and elongation at break, excellent high-temperature resistance and ozone aging resistance is prepared through optimization ofthe types of filler, product formulas and the production process, the product has excellent appearance, no blueing and blooming phenomena, the high quality requirements of high performance automobiles and civilian rubber products are met; and meanwhile, the dispersibility and venting properties of the filler in the production process are improved, the weighing efficiency of the accelerator is improved, and risks of error weighing and leakage weighing in the traditional weighing process of multiple accelerators are reduced, so that the quality and stability of the product are ensured.

Description

technical field [0001] The invention relates to the field of rubber materials, in particular to a formulation process of ethylene-propylene-diene rubber and the ethylene-propylene-diene rubber prepared by the formulation process, which is mainly used in rubber products for automobiles and civilians. Background technique [0002] With its excellent water resistance, ozone resistance, aging resistance and weather resistance, ethylene propylene diene monomer (EPDM) is more and more widely used to replace traditional natural rubber and other rubber types in the production of automotive and civil rubber products. The unsaturation of EPDM rubber is much lower than that of other highly unsaturated diene rubbers. When vulcanized with sulfur vulcanization system, the vulcanization activity is low. In order to improve the vulcanization speed and vulcanization degree of the rubber compound, usually In the formulation, a high amount of accelerator is used in combination with the system....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/22C08K5/09C08K5/548C08K3/36C08K3/26C08K3/04C08K3/06
CPCC08L23/16C08L2201/08C08K2201/011C08K2003/2296C08K2003/265C08L91/06C08K13/02C08K3/22C08K5/09C08K5/548C08K3/36C08K3/26C08K3/04C08K3/06
Inventor 杨玉玺赵鑫
Owner 四川宏亿复合材料工程技术有限公司
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