With the development of the automotive industry, the performance requirements for auto parts are becoming higher and higher. Hydrogenated nitrile butadiene rubber (HNBR), as a kind of high performance rubber material, has been widely used in auto parts due to its unique physical and chemical properties. This paper will introduce the application and advantages of HNBR in auto parts in detail.
1. Basic characteristics of HNBR
HNBR is obtained by hydrogenating unsaturated double bonds in nitrile butadiene rubber (NBR), a process that significantly improves the heat, oxidation and oil resistance of the material. HNBR has excellent temperature resistance and can maintain stable performance at high temperatures and even above 150 ° C. In addition, it also has good oil resistance, chemical resistance and low permeability.
Second, the application of HNBR in auto parts
1. Fuel system and engine seals: HNBR's high temperature and oil resistance make it an ideal material for fuel system and engine seals. For example, components such as fuel pipes, fuel pump seals, crankcase ventilation pipes can be made of HNBR material.
2. Oil seals and O-rings: HNBR's excellent oil resistance makes it widely used in seals such as oil seals and O-rings. These seals need to withstand high temperatures and oil erosion for a long time, and HNBR can provide reliable sealing performance.
3. Hose and piping system: Because of its excellent temperature resistance and oil resistance, HNBR is widely used in automotive hose and piping system, such as fuel hose, brake hose and so on.
4. Shock absorber: HNBR's high elasticity and fatigue resistance make it an ideal material for shock absorber components, such as engine mounts, suspension system components, etc.
3. Advantages of HNBR
1. High temperature resistance: HNBR can maintain stable performance in high temperature environment to meet the sealing needs of high temperature parts such as automotive engines.
2. Excellent oil resistance: HNBR has good resistance to fuel oil and lubricating oil, and can maintain long-term sealing performance.
3. Good mechanical properties: HNBR has excellent tensile strength, tear strength and wear resistance, which can meet the requirements of mechanical properties of materials for auto parts.
4. Chemical corrosion resistance: HNBR has good resistance to a variety of chemical media, suitable for complex vehicle operating environment.
Iv. Summary
Hydrogenated nitrile butadiene rubber (HNBR) has been widely used in auto parts due to its high temperature resistance, oil resistance, excellent mechanical properties and good chemical resistance. With the continuous progress of the automobile industry and the improvement of environmental protection requirements, the application prospect of HNBR will be broader. In the future, with the continuous development of new materials and technologies, the application of HNBR in automotive parts will continue to expand and optimize, contributing to the sustainable development of the automotive industry.