Shandong Dawn Special Elastomer Material Co., Ltd. is a subsidiary of Dawn Polymer (stock code: 002838), which was established in 2016 and is committed to the research and development, production, sales, and application services of hydrogenated nitrile rubber (HNBR) series products. The company has a 3000-ton/year HNBR rubber production facility in Longkou, Shandong, as well as high-end HNBR rubber and nitrile rubber (NBR rubber ) compounding production lines, which can customize and process various kinds of compounded rubber products.
HNBR rubber is a highly saturated special elastomer obtained from nitrile rubber (NBR) through hydrogenation. Compared with NBR rubber, HNBR rubber molecules contain a small amount or no carbon-carbon double bonds, while maintaining NBR's excellent properties such as resistance to oil and abrasion, it also has superior resistance to heat aging, ozone, radiation, chemical media (acids, alkalis, methane, refrigerants, hydrogen sulfide), and excellent dynamic properties. As a result, HNBR rubber is a strategically important material.
The advantages of HNBR rubber over NBR rubber are mainly reflected in the following aspects:
1. Superior heat resistance: HNBR rubber can work continuously at temperatures up to 150°C, while NBR rubber can only work within 100°C. HNBR rubber is more suitable for applications in high-temperature environments.
2. Excellent resistance to aging: HNBR rubber has a unique molecular structure, which makes it less susceptible to degradation caused by heat or oxygen. It can resist the aging caused by heat, oxygen, and ozone, prolong the service life of products, and improve their reliability and safety.
3. Better oil resistance: HNBR rubber has excellent oil resistance, especially to lubricating oils, hydraulic oils, and fuel oils that contain high levels of aromatics, which makes it suitable for use in automobile engines, transmission systems, and other applications that require good oil resistance.
4. Superior resistance to chemicals: HNBR rubber has excellent resistance to a wide range of chemical compounds, including acids, alkalis, and freon refrigerants, which makes it a preferred material for use in seals and gaskets under harsh chemical environments.
5. Excellent elasticity and flexibility: HNBR rubber has good elastic and resilient properties, which make it suitable for use in dynamic sealing applications that require good rebound resilience, such as pump seals and valve seals.
In summary, HNBR rubber has many advantages over NBR rubber due to its unique molecular structure, making it suitable for use in high-temperature, harsh chemical, and dynamic environments. Shandong Dawn Special Elastomer Material Co., Ltd. is committed to the development and production of HNBR series products. With its strong technical strength and excellent product quality, the company has been a leading player in the HNBR rubber industry.