Formula of ethylene propylene diene monomer seal washer of plate heat exchanger

Abstract

The invention provides a formula of an ethylene propylene diene monomer seal washer of a plate heat exchanger. The ethylene propylene diene monomer seal washer comprises the following materials in parts by mass: 70-110 parts of ethylene propylene diene monomer, 10-25 parts of carbon black N550, 40-70 parts of paraffin oil, 5-15 parts of zinc oxide, 1-6 parts of stearic acid, 2-4 parts of amine thermal-resisting antioxidant, 2-5 parts of peroxide, 0.5-3.5 parts of triallyl cyanurate, 3-6 parts of a blending agent and 3-8 parts of an anti-wear agent, wherein the peroxide is 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane. The formula of the high heat-aging resistance ethylene propylene diene monomer seal washer of the plate heat exchanger is designed by combining the ethylene propylene diene monomer, the carbon black N550, the paraffin oil, the zinc oxide, the stearic acid, the amine thermal-resisting antioxidant, the peroxide, the triallyl cyanurate, the blending agent and the anti-wear agent; by using the Lanxess imported long-chain branched ethylene propylene diene monomer, the 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane and the efficient thermal-resisting antioxidant, the heat aging resistance of a rubber material is improved, and the heat resistance reaches 175 DEG C; therefore, the ethylene propylene diene monomer seal washer can meet the use requirement of the plate heat exchanger, and the product is environmental-friendly.

Description

technical field [0001] The invention relates to the field of rubber manufacturing, in particular to a formula of EPDM sealing gaskets for plate heat exchangers. Background technique [0002] At present, EPDM rubber is usually used in the manufacture of service heat exchanger sealing gaskets, but because the heat exchanger is prone to heat during work, the sealing ring is prone to thermal aging after being heated, resulting in damage to the heat exchanger sealing ring , affecting the sealing of the heat exchanger, resulting in the service life of the heat exchanger. Therefore, it is particularly important to design a formula of EPDM sealing gaskets for plate heat exchangers with high heat aging performance. Contents of the invention [0003] For the problems existing in the above-mentioned prior art, the purpose of this invention is to provide a kind of plate heat exchanger EPDM sealing gasket formula, through EPDM rubber, N550 carbon black, paraffin oil, zinc oxide, stear...

AI Technical Summary

Problems solved by technology

[0002] At present, EPDM rubber is usually used in the manufacture of service heat exchanger sealing gaskets, but because the heat exchanger is prone to heat during work, the sealing ring is prone to thermal aging after being heated, resulting in damage to the heat exchanger sealing ring , affecting the sealing of the heat exchanger, resulting in the service life of the heat exchanger