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Rapidly-vulcanized ethylene-propylene-diene monomer and preparation method thereof

A technology for vulcanizing ternary and ethylene-propylene rubber, applied in the rubber field, can solve the problems of poor fluidity, insufficient scorch safety, slow vulcanization speed, etc., and achieve the effect of reducing vulcanization time, excellent performance such as shock resistance, and improving vulcanization speed.

Inactive Publication Date: 2019-11-08
上海正村橡塑工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing EPDM formula generally has the problem of slow vulcanization speed when used in injection molding, so increasing the vulcanization speed is the key, but if the vulcanization speed is fast enough, it is prone to scorch, insufficient safety and poor fluidity and other shortcomings

Method used

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  • Rapidly-vulcanized ethylene-propylene-diene monomer and preparation method thereof
  • Rapidly-vulcanized ethylene-propylene-diene monomer and preparation method thereof
  • Rapidly-vulcanized ethylene-propylene-diene monomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A rapid vulcanization EPDM rubber, comprising the following raw materials in parts by weight: 100 parts of EPDM rubber, 50 parts of carbon black, 95 parts of paraffin oil, 2 parts of ZnO, 2 parts of stearic acid, PEG 3.5 parts, 2 parts of anti-aging agent, 1.5 parts of flow aid, 2 parts of sulfur, 0.4 parts of thiuram accelerator TMTD, 1.5 parts of thiazole accelerator DM, 0.5 part of dithiocarbamate accelerator TDEC.

[0024] Adopt above-mentioned raw material to prepare the preparation method of rapid vulcanization EPDM rubber, comprise the steps:

[0025] (1) Internal mixing: first put in EPDM rubber, ZnO, PEG, anti-aging agent, processing aid, stearic acid, then put in carbon black and paraffin oil after 1-2 minutes, and mix until 130-140°C Glue; The rubber is left to stand for 24 hours, then the rubber is put into the internal mixer and added sulfur, thiuram accelerator TMTD, thiazole accelerator DM, dithiocarbamate accelerator TDEC, mixing 2- Deglue after 3 minut...

Embodiment 2

[0030] A rapid vulcanization EPDM rubber, comprising the following raw materials in parts by weight: 100 parts of EPDM rubber, 70 parts of carbon black, 100 parts of paraffin oil, 1 part of ZnO, 1 part of stearic acid, PEG 4 parts, 3 parts of anti-aging agent, 1 part of flow aid, 1 part of sulfur, 0.6 parts of thiuram accelerator TMTD, 2 parts of thiazole accelerator DM, 1.5 parts of dithiocarbamate accelerator TDEC.

[0031] Adopt above-mentioned raw material to prepare the preparation method of rapid vulcanization EPDM rubber, comprise the steps:

[0032] (1) Internal mixing: first put in EPDM rubber, ZnO, PEG, anti-aging agent, processing aid, stearic acid, then put in carbon black and paraffin oil after 1-2 minutes, and mix until 130-140°C Glue; The rubber is left to stand for 24 hours, then the rubber is put into the internal mixer and added sulfur, thiuram accelerator TMTD, thiazole accelerator DM, dithiocarbamate accelerator TDEC, mixing 2- Deglue after 3 minutes;

[...

Embodiment 3

[0037] A rapid vulcanization EPDM rubber, comprising the following raw materials in parts by weight: 100 parts of EPDM rubber, 60 parts of carbon black, 90 parts of paraffin oil, 3 parts of ZnO, 1.5 parts of stearic acid, PEG 3 parts, 1 part of anti-aging agent, 2 parts of flow aid, 1.5 parts of sulfur, 0.8 parts of thiuram accelerator TMTD, 1.5 parts of thiazole accelerator DM, 1 part of dithiocarbamate accelerator TDEC.

[0038] Adopt above-mentioned raw material to prepare the preparation method of rapid vulcanization EPDM rubber, comprise the steps:

[0039] (1) Internal mixing: first put in EPDM rubber, ZnO, PEG, anti-aging agent, processing aid, stearic acid, then put in carbon black and paraffin oil after 1-2 minutes, and mix until 130-140°C Glue; The rubber is left to stand for 24 hours, then the rubber is put into the internal mixer and added sulfur, thiuram accelerator TMTD, thiazole accelerator DM, dithiocarbamate accelerator TDEC, mixing 2- Deglue after 3 minutes;...

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Abstract

The invention relates to a rapidly-vulcanized ethylene-propylene-diene monomer. The rapidly-vulcanized ethylene-propylene-diene monomer is prepared from following raw material substances in parts by weight: ethylene-propylene-diene monomer, carbon black, paraffin oil, ZnO, stearic acid, PEG, an anti-aging agent, a processing aid, sulphur, a thiuram type accelerator, a thiazole type accelerator, and a dithiocar-bamate type accelerator. The invention further relates to a preparation method of the rapidly-vulcanized ethylene-propylene-diene monomer. Through a method of combined use of a vulcanization system and various accelerators, part of an active agent is added, thus the vulcanization reaction activity of a sizing material is further improved, the vulcanization speed of the sizing material is increased to a large extent, and the vulcanization time is shortened; and meanwhile, it is ensured that the sizing material has great scorch safety, flowability and primary hot tearing crack performance. A product prepared through the preparation method has great tensile strength, great tearing strength and low compression set, and has excellent properties such as ozone resistance, moisture resistance and seismic resistance.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to rapid vulcanization EPDM rubber and a preparation method thereof. Background technique [0002] The existing EPDM formula generally has the problem of slow vulcanization speed when used in injection molding, so increasing the vulcanization speed is the key, but if the vulcanization speed is fast enough, it is prone to scorch, insufficient safety and poor fluidity and other shortcomings. Contents of the invention [0003] The invention overcomes the deficiencies in the prior art, and aims to provide a rapidly vulcanized EPDM rubber capable of increasing the vulcanization speed and ensuring scorch safety and a preparation method thereof. [0004] Concrete technical scheme of the present invention is as follows: [0005] A rapid vulcanization EPDM rubber, comprising the following raw materials in parts by weight: [0006] [0007] Preferably, the processing aid is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L71/02C08L91/06C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K5/47C08K5/40C08K5/39
CPCC08K2003/2296C08L23/16C08L71/02C08L91/06C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K5/47C08K5/40C08K5/39
Inventor 潘晓天赵士伍林郎功蔡庸进
Owner 上海正村橡塑工业有限公司
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