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Heat aging-resisting and low-pressure change sulfur vulcanized EPDM (Ethylene-Propylene-Diene Monomer) rubber composition, preparation method, application and application product thereof

A technology of EPDM rubber and heat aging resistance, which is applied in the field of artificial rubber to achieve excellent physical and mechanical properties, improve heat aging resistance and low compression set performance, and reduce the effect of vulcanization temperature

Active Publication Date: 2017-09-22
NANJING ORIENTLEADER TECH CO LTD
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  • Claims
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  • Heat aging-resisting and low-pressure change sulfur vulcanized EPDM (Ethylene-Propylene-Diene Monomer) rubber composition, preparation method, application and application product thereof
  • Heat aging-resisting and low-pressure change sulfur vulcanized EPDM (Ethylene-Propylene-Diene Monomer) rubber composition, preparation method, application and application product thereof
  • Heat aging-resisting and low-pressure change sulfur vulcanized EPDM (Ethylene-Propylene-Diene Monomer) rubber composition, preparation method, application and application product thereof

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[0039] The technical solutions of the present invention will be further described below with reference to specific examples.

[0040] Table 1 embodiment 1-5 raw material components of sulfur-vulcanized EPDM rubber compositions and their proportions

[0041]

[0042]

[0043] Note:

[0044] (1) Anti-aging agent 445: 4.4'-bis(α.α'-dimethylbenzyl)diphenylamine;

[0045] (2) Anti-aging agent 4010NA: N-isopropyl-N'-phenyl-p-phenylenediamine;

[0046] (3) Accelerator DTDM: 4,4'-dithiodimorpholine;

[0047] (4) accelerator TMTD: tetramethylthiuram disulfide;

[0048] (5) accelerator PZ: zinc dimethyl dithiocarbamate;

[0049] (6) accelerator BZ: zinc di-n-butyl dithiocarbamate;

[0050] Weigh the raw material components according to the ratio shown in Table 1, and carry out the mixing and processing of the raw materials, including the following steps:

[0051] Put the formula amount of EPDM into the internal mixer for 1-2 minutes; then add the formula amount of zinc oxide...

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Abstract

The invention discloses a heat aging-resisting and low-pressure change sulfur vulcanized EPDM (Ethylene-Propylene-Diene Monomer) rubber composition, a preparation method, application and an application product thereof. The composition is prepared from 100 parts of EPDM rubber, 50 to 130 parts of carbon black, 10 to 60 parts of paroline, 2 to 8 parts of zinc oxide, 0.5 to 3 parts of stearic acid, 1 to 6 parts of an anti-aging agent, 0.2 to 1 part of sulfur and 1 to 6 parts of an accelerator. Compared with a sulfur vulcanized EPDM rubber composition prepared in the prior art, the composition has the advantages that heat aging resistance and low compression set are remarkably increased, and the composition is applied to rubber products having the requirements on heat aging resistance and low pressure change, and is particularly applied to an outer adhesive layer of a rubber hose which adopts a poly-4-methyl-1-pentene (TPX) coating and vulcanizing technology; meanwhile, the preparation method of the composition is simple, the vulcanization temperature is lower, and the purpose of saving energy is achieved.

Description

technical field [0001] The invention belongs to the technical field of artificial rubber, and relates to a sulfur-vulcanized EPDM rubber composition with heat aging resistance and low pressure change, a preparation method, an application and an application product thereof. Background technique [0002] Vulcanization is the last process in the production of rubber products, and it is also one of the important processes in rubber processing. In order to obtain a smooth appearance for the rubber hose, the traditional vulcanization method is to vulcanize the semi-finished product with lead before the vulcanization of the hose, but this method has serious pollution problems. It is easy to be oxidized during the process, and it is accompanied by lead vapor to cause pollution. In order to overcome the shortcomings of traditional vulcanization methods and not reduce the performance of rubber hoses, the current vulcanization process of rubber hoses is mostly poly-4-methylpentene-1 (...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K5/40C08K5/39
CPCC08K2003/2296C08L23/16C08L2201/08C08L2203/18C08L91/06C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K5/40C08K5/39
Inventor 王定东马妍邹惠芳郭磊王峰
Owner NANJING ORIENTLEADER TECH CO LTD
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