Automotive sealing industry status and development

Currently, the auto body sealing materials commonly used in EPDM rubber (EPDM) or polyvinyl chloride (PVC). EPDM rubber (EPDM) is ethylene, propylene monomer is added small amount of non conjugated diene elastomeric polymer material formed, which structure is characterized by the molecular chains of the polymer are all unsaturated double bonds, and in the branched-chain by introducing an unsaturated double bond, which has excellent weather resistance, heat resistance, ozone resistance, UV resistance and good processability and low compression resistance, is the production of automobile sealing material of choice, generally vehicles produced using EPDM seal material life of up to ten years. PVC materials used in surface decoration is more demanding automotive seals, such as the roof trim, inner and outer window seal. With the auto industry, can be used in automotive sealing strip processing and production of new materials more and more. Wherein the thermoplastic elastomer (TPE) material is the most prominent of a new type of environmentally friendly materials, it is mainly divided polyolefin (TPV, TPO); polyurethane (TPU); polyester (TPEE): polyvinyl chloride (TPVC ); polyamide (TPAE) and other types of thermoplastic elastomer. The seal used in automotive products mainly polyolefins (TPV, TPO) thermoplastic elastomer material, such materials and glass friction coefficient, wear resistance, can be used as automotive glass guide groove, outside door glass seal strip and part of the auxiliary seal materials. In addition, a variety of automotive sealing auxiliary materials increasingly focused on environmental requirements, such as various environmentally friendly adhesives, water-based coating materials applications.

Automotive sealing products involved in the technical standards mainly by material performance standards, product performance standards and test methods Standard three parts. In other countries, material, product performance standards of the automotive OEMs usually corporate standards, test methods, material properties of the standard test methods commonly used public infrastructure standards (ISO, DIN, ASTM, JIS, etc.), and product performance test method usually used each automotive OEMs corporate standards; in the country, as its own brand of automotive OEMs started late, automotive container seal products, technical standards primarily by automotive sealing industry associations and enterprises to establish and maintain, with the continuous development of China's auto industry , the major OEMs are gradually establish and improve their own standard system and standard system for the automotive industry with the world standards.

In recent years, China's auto industry growth by leaps and bounds, the global financial crisis and the decrease in car production and sales background, China's automobile production and sales both across ten million people. Not just the world's leading automobile manufacturing companies valued this huge Chinese market, the same as auto parts automotive sealing industry, the main seal foreign manufacturers have or are stationed in the Chinese mainland, or joint venture, or sole proprietorship, have build factories in the automotive OEMs around the present, these enterprises also mainly for the production of passenger cars based in Europe, America, Japan, Korea joint venture companies supporting the production of automotive automotive sealing Cable tie  strip. With these foreign automotive sealing enterprises, the domestic industry exists independent research firm inadequate investment, lack of R & D experience disadvantage.