Product Name | |
| CAS | / |
Quality Standard | Standard |
Product Grade | Pharma Grade |
Place of Origin | China |
Dangerous Goods | No |
Hydrogenated Styrene-Isoprene Copolymer (HSIP) is a type of high-performance thermoplastic elastomer and lubricant additive, prepared by the selective hydrogenation of styrene-isoprene copolymers. The hydrogenation process eliminates the unsaturated double bonds in the molecular structure, which significantly enhances the thermal stability, oxidation resistance and compatibility of the copolymer compared with its unhydrogenated precursor.
In terms of core functions, HSIP is mainly used as a viscosity index improver and pour point depressant in high-grade lubricant formulations, and it also exhibits excellent shear stability. As a viscosity index improver, its unique block copolymer structure enables it to respond sensitively to temperature changes. At high temperatures, the polymer chains stretch to increase the internal friction of the lubricating oil, preventing excessive viscosity reduction and maintaining a stable oil film to protect mechanical friction pairs. At low temperatures, the chains curl up tightly to avoid sharp increases in oil viscosity, ensuring good fluidity of the lubricant and smooth cold starts of equipment.
Its outstanding shear stability allows it to resist the mechanical shear force generated by high-speed operation of equipment, avoiding molecular chain breakage and ensuring long-term stable performance of lubricants. In addition, HSIP has good compatibility with various mineral base oils, synthetic base oils and other lubricant additives such as antioxidants, anti-wear agents and metal deactivators, and can produce synergistic effects to improve the overall performance of lubricating oils.
HSIP is widely applied in the production of high-performance engine oils, hydraulic oils and gear oils, especially suitable for lubrication systems of equipment operating under harsh conditions such as high temperature, high pressure and high speed.
Product Introduction