EPM ethylene propylene rubber viscosity index improver is an ethylene copolymer rubber mainly composed of ethylene units and a small amount of propylene units.
It has excellent oil resistance, heat resistance, ageing resistance, weather resistance, chemical corrosion resistance, ozone resistance and other properties.
It is mainly used in the manufacture of heat-resisting and oil-resisting rubber products,
The viscosity index improver of engine oil is made of EPM as the main raw material.
What does EPM represent
EPM ethylene propylene rubber can be generally divided into ethylene propylene rubber (EPM) and ethylene propylene diene copolymer rubber (EPDM).
For EPDM, M is the abbreviation of diene (english acronym of diolefin).
Ethylene propylene rubber (EPM) is a copolymer rubber of ethylene and propylene.
Its molecular structure consists of three parts:
long chain of propylene, main chain of ethylene, cross-linking agent of non-conjugated diene.
The three parts are interlinked to form a three-dimensional network structure.
EPDM is a copolymer of ethylene, propylene and a small amount of non-conjugated and diene monomers.
It has excellent comprehensive physical and chemical properties, including ozone resistance, aging resistance, weather resistance, chemical resistance, electrical insulation, heat resistance and oil resistance.
It has good compatibility with oil, aviation liquid fuel, water and many acid-base solutions.
The product is widely used in polymer, rubber, medicine, textile, paper, detergent, etc.
EPM ethylene propylene rubber has excellent physical and chemical properties, including excellent heat resistance, ozone resistance, aging resistance, chemical resistance, flame resistance and electrical insulation properties.
Ethylene Propylene Rubber used to manufacture engine oil viscosity index improves, and can increase the viscosity index of engine oil.
In addition, ethylene propylene rubber is also used to manufacture rubber hoses, seals, rubber strips and sealing rings, and can be used to manufacture electrical insulation products such as electrical tape.
It is also used in the manufacture of anti-aging rubber products, such as belts, drive belts, rubber sheets, gaskets and pipe joints.
Ethylene propylene rubber is polymerized by ethylene and propylene.
It is primarily used in blending medium-grade internal combustion engine oils.
The product is white transparent colloid. It is solid at normal temperature.
Excellent thickening capacity
Excellent shear stability and thermal oxidation stability
Good compatibility with all functional additives and pour point depressants
Improve the low temperature property of oil
Good oil solubility
Shearing Stability Index (SSI) ≤45