Thermoplastic elastomer for automobile sealing strip joint corner and production method thereof

Abstract

The invention relates to a thermoplastic elastomer for an automobile sealing strip joint corner and a production method thereof, and the thermoplastic elastomer is prepared by combining 10-30 parts by mass of ethylene propylene diene monomer (EPDM), 10-30 parts by mass of high melt index polypropylene (PP), 10-30 parts by mass of POE elastomer, 10-30 parts by mass of filler, 10-30 parts by mass of plasticizer, 10-30 parts by mass of cross-linking agent and 10-30 parts by mass of assistant. 18 to 25 parts of polypropylene (PP) with high melt index; 2-5 parts of a POE elastomer; 2-5 parts of a filler; 0-20 parts of a plasticizer; 0.5 to 5 parts of a cross-linking agent; 1-5 parts of an auxiliary agent; the thermoplastic elastomer is low in friction coefficient, high in elasticity, good in wear resistance and high in weather resistance, the sealing effect of an automobile is improved, rubber strips made of different materials can be subjected to corner connection, rapid injection molding and integrated forming can be achieved, vulcanization is not needed, environmental protection and energy saving are achieved, leftover materials can be recycled, and cost is reduced; through the composition of the thermoplastic elastomer, a reliable production process is formulated, and the production automation degree is high, so that the thermoplastic elastomer has great practical and popularization values.

Description

technical field [0001] The invention relates to a thermoplastic elastomer material, in particular to a thermoplastic elastomer for automobile sealing strip corners and a production method thereof. Background technique [0002] After retrieving the relevant patent documents, the same thermoplastic elastomer for the corner of the automobile sealing strip as the present invention and its production method have not yet been retrieved. At present, the domestic automobile sealing strip materials basically use EPDM rubber (EPDM) and thermoplastic elastomer (TPV). (TPV) sealing strip, its thermoplastic elastomer (TPV) corner material has been widely used, convenient processing, environmental protection, cost saving, the existing EPDM rubber strip still uses EPDM rubber ) materials for corner joints, which need to be shaped and vulcanized during the corner joint process. The equipment investment for the joint joints is large and the production efficiency is low. Therefore, how to de...

AI Technical Summary

Problems solved by technology

At present, the domestic automobile sealing strip materials basically use EPDM rubber (EPDM) and thermoplastic elastomer (TPV). (TPV) sealing strip, its thermoplastic elastomer (TPV) corner material has been widely used, convenient processing, environmental protection, cost saving, the existing EPDM rubber strip still uses EPDM rubber ) materials for corner joints, which need to be shaped and vulcanized during the corner joint process. The equipment investment for the joint joints is large and the production efficiency is low. Therefore, how to develop an environmentally friendly thermoplastic elastomer (TPV) for the existing EPDM The joint angle of rubber (EPDM) rubber strips and ensuring its bonding force are technical problems that need to be solved at present