The silicone rubber strip of the car has the function of filling various gaps between body components, and has the functions of shock absorption, waterproof, dustproof, sound insulation, decoration and so on. It is mainly used in the door leaf, Door frames, front and rear windshields, engine covers and trunk lids. It is worth mentioning that, in order to save costs, many low-end models are simply equipped with seals in many directions.
The key to the production of car silicone strips is what kind of information is used. Let me introduce the information about car sealing strips. I hope I can assist you.
Polyvinyl chloride (PVC) is a traditional general-purpose plastic. After modification, its aging resistance and rubber feel are greatly improved. However, because of its poor elasticity, it is mainly used as a clamp for the inner and outer strips and some seals Location information. In trucks and agricultural vehicles, PVC is also often used as body door frame seals, and in cars, it is often used in combination with EPDM as light-colored accessories.
2, EPDM rubber
Ethylene-propylene-diene rubber (EPDM) is made by the polymerization of ethylene and propylene monomers in a small amount of non-conjugated diene. The structure is characterized by all non-full double bonds on the polymer molecular main chain, while the non-full double bonds are introduced on the branched chains. Therefore, it has excellent weather resistance, heat resistance, ozone resistance, ultraviolet resistance, excellent processing function and low shrinkage and permanent deformation. It is the first choice for producing seals. At present, most of the car seal materials are EPDM.
According to the different parts and functions of the sealing strip, in actual use, participate in the vulcanization, protection, reinforcement, operating system information and special materials (such as colorants, foaming agents) in the EPDM material guess, to form a dense rubber Black gum and colorful gum) and sponge gum.
3, thermoplastic elastomer
Thermoplastic Elastomer Materials (TPE / TPV) are materials that have been opened in recent years. The structural characteristics of the two phases are made of plastic and rubber, so to a certain extent, the characteristics of plastic and rubber do not need to be vulcanized in the processing process, which is briefly completed The accurate control of the cross-section, the data can be retrieved together under certain conditions, and the environmental pollution is small. Therefore, it is the focus of the designers of vehicles and sealing systems. However, because of its elasticity and permanent deformation, it is not yet sophisticated, it cannot produce sponges, and the price is high, so its use is very limited. Now it is mainly used for making window side bars and window guides. With the improvement and improvement of TPE production skills, the scale of its use will be further expanded.
Qinghe Hongao Sealing Parts Co., Ltd. is an enterprise with self-produced and self-sale, integrating production, processing, import and export trade. The company is a professional manufacturer of EPDM seals, door and window seals, silicone seals, rubber foam strips, foam seals, rubber seals. The factory covers an area of 5,600 square meters, with a construction area of 1,800 square meters. It has 12 million yuan in fixed assets. The company has more than 125 cadres and employees, including 13 senior engineering and technical personnel. Our company applies modern technology management. market. We always adhere to the principle of "practical and innovative, united and enterprising", and constantly develop and develop.