The application of rubber hoses in the automotive industry

for automotive userubber tubeIn recent years, it has grown at a rate of about 25%, and there are more than 20 automobile rubber pipe factories in China, with a total consumption of 200 million standard meters. The proportion of resin composite rubber hoses, including brake hoses and cooling water pipes, is increasing, mainly consisting of woven rubber hoses and wrapped rubber hoses; Short fiber rubber hoses have attracted attention due to their simple process and good performance. From the rubber data, it can be seen that the development has shifted from a single type of rubber in the past to using different types of rubber for the inner, middle, and outer layers to adapt to different working environment conditions. Generally, 2-3 different types of rubber are compounded together. In recent years, the development of automotive rubber hoses in China has begun to take shape, and many enterprises have introduced foreign technology and equipment, resulting in significant progress in production quality and quantity. However, there is still a significant gap compared to foreign countries, and mid to low end products can meet market demands. High quality products such as fuel pipes, thin braided rubber hoses, heat-resistant pipes, etc. still rely on foreign products. The domestic car matching rate for this type of product is only 40%, and the matching rate for high-quality cars is only 5-10%. In addition to using nitrile rubber, rubber materials also use nitrile rubber/polyvinyl chloride blend rubber, and further use hydrogenated nitrile rubber, chloroether rubber, chlorosulfonated polyethylene, and ethylene propylene diene monomer rubber.

What are the characteristics of rubber hoses?

1. With good processing performance and easy molding, various products can be manufactured through methods such as extrusion hot air vulcanization molding, mold addition molding, and extension molding.

2. Temperature resistance: It can be used for a long time at 200 ℃ and still has elasticity at -60 ℃.

3. Electrical insulation performance: Silicone rubber has excellent dielectric properties, especially at high temperatures, which greatly exceed ordinary organic rubber. Its dielectric strength is almost unaffected by temperature in the range of 20-200 ℃.

4. Excellent high-temperature compression for permanent deformation.

5. Excellent weather resistance, ozone resistance, and UV resistance, and long-term outdoor use without cracking. It is generally believed that silicone rubber can be used outdoors for more than 20 years.