Viscosity Index Improver
Viscosity Index Improver
Viscosity Index Improvers are high-molecular-weight additives that improve the viscosity-temperature characteristics of lubricants through molecular chain entanglement effects. Key functions include:
- Viscosity Index Enhancement: Increases the oil’s viscosity index.
- High-Temperature Viscosity Retention: Maintains sufficient viscosity at elevated temperatures.
- Low-Temperature Fluidity: Ensures easy startup in cold conditions.
- Shear Stability: Preserves viscosity under mechanical stress.
Included Products
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Classification:
- Specifications
Type | Product |
J0050 Ethylene-Propylene Copolymer | Strong thickening capacity, moderate shear stability. |
J0010 Ethylene-Propylene Copolymer | Excellent thickening capacity, superior shear stability. |
PIB950 Polyisobutylene (PIB) | Moderate thickening capacity, good shear stability. |
PIB1300 Polyisobutylene (PIB) | Moderate thickening capacity, good shear stability. |
PIB2400 Polyisobutylene (PIB) | Moderate thickening capacity, good shear stability. |
4030 Styrene-Isoprene Polymer | Excellent thickening capacity, superior shear stability. |
T819HB High-Viscosity Polymethacrylate | Excellent thickening capacity, superior low-temperature performance. |
T838 Gear Oil Polymethacrylate | Moderate thickening capacity, good low-temperature performance. |
T878 Low-Temperature Hydraulic Oil Polymethacrylate | Excellent low-temperature performance, superior shear stability. |
TE-1 Water-Soluble High-MW Polyether | Preferred thickener for fire-resistant hydraulic fluids. |
PAO1000 Metallocene Polyalphaolefin 1000 | Balanced high/low-temperature performance and shear stability; partial viscosity index improver replacement. |
- Application Fields
High-Grade Engine Oils: Ultra-long oil drain intervals.
Wide-Range Gear Oils: Passes rigorous shear tests.
ATF Lubricants: Enhanced shear stability and viscosity index.
- Operational Guidelines
Dissolution Temperature Control
Ethylene-Propylene Copolymers:
Cut into small pieces.
Add dry polymer when oil temperature reaches 100°C.
Maintain oil temperature at 120–130°C for 8–12 hours (varies by equipment) until viscosity stabilizes.
Styrene-Isoprene Polymers:
Grind dry polymer into particles/powder (<1 cm).
Add dry polymer when oil temperature reaches 100°C.
Maintain oil temperature at 130–140°C for 8–12 hours (varies by equipment) until viscosity stabilizes.