Preparation method of heat/ozone/compressive deformation resistant rubber material for automobile sealing element

Abstract

The invention discloses a preparation method of a heat / ozone / compressive deformation resistant rubber material for an automobile sealing element, and the method comprises a formula and a preparation process. In the invention, nitrile rubber / polyvinyl chloride resin and rubber are adopted; in the formula, a vulcanizing system of dicumyl peroxide and N,N'-m-phenylene dimaleimide is adopted, the anti-aging agents of 2,2,4-trimethyl-1,2-dihyaroquinoline polymer and 2-mercaptobenzimidazole are added, the anti-aging agent of N-isopropyl-N'-phenyl-p-phenylenediamine and a paraffin lubricating agent with ozone resistance are added, and the technical scheme of the corresponding preparation process is provided, thus the problems and defects of low temperature / ozone / permanent compressive deformation resistances in the prior art are overcome, and through the heat / ozone / compressive deformation resistant rubber material prepared by the method, the manufactured rubber article of an automobile oil tank pumping hole sealing element achieves the purpose of improving the heat / ozone / compressive deformation resistances to conform to the Nissan NES M707 standard.

Description

technical field [0001] The invention relates to a method for preparing a rubber material, in particular to a product used for the manufacture of automotive oil tank pump port seals, a heat-resistant, ozone-resistant, and pressure-resistant rubber material for automobile seals with heat-resistant, ozone-resistant, and pressure-resistant properties method of preparation. Background technique [0002] Rubber products such as automobile fuel tank pump port seals made of rubber materials in the prior art have low temperature resistance, ozone resistance, and low compression set resistance, which cannot meet the requirements of the Nissan NES M7070 standard. [0003] The test data of the automobile oil tank pump port seal rubber product that rubber material (acrylonitrile-butadiene rubber) of prior art is made is as follows: [0004] [0005] Conclusion: the 2.2 tensile strength in the 2nd heat resistance item, the 3rd ozone resistance item, and the 4th compression resistance ...

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Problems solved by technology

[0007] For the problems and deficiencies in the above-mentioned prior art, the present invention adopts nitrile rubber / polyvinyl chloride resin and rubber; adopts dicumyl peroxide, N, N'-m-phenylene bismaleimide in the formula Vulcanization system to improve the pressure change resistance and heat resistance of the material; add 2,2,4-trimethyl-1,2-dihydroquinoline polymer and 2-mercaptobenzimidazole anti-aging agent to the formula , to improve the heat resistance and anti-aging performance of the material; add N-isopropyl-N'-phenyl-p-phenylenediamine anti-aging agent and paraffin lubricant with anti-ozone performance in the formula to improve the anti-ozone performance of the material performance; and matched with the technical scheme of the corresponding preparation process, a method for preparing a heat-resistant, ozone-resistant, and pressure-resistant rubber material for automobile seals is provided, aiming at preparing a heat-resistant, ozone-resistant, and pressure-resistant rubber material, so that the produced The rubber products of automobile fuel tank pump port seals can improve the performance of temperature resistance, ozone resistance and compression deformation resistance, meet the increasing demand of rubber products in the automobile industry, and meet the purpose of Nissan NESM7070 standard

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