Viscosity Index Improvers
Product Details
|
An increase in the Viscosity Index (VI) of an oil blend can be brought about by the incorporation of a VI Improver. CRISTOL-VI Improvers are solutions of alkyl methacrylate polymer in solvent refined hydrocarbon oils that reduce the tendency of oil to change viscosity with temperature. Hydraulic fluids, which provide effective lubrication over a broad temperature range, usually contain these VI Improvers. The viscosity index, commonly designated VI, is an arbitrary numbering scale that indicates the changes in oil viscosity with changes in temperature. Viscosity index can be classified as follows: low VI - below 35, medium VI ?35 to 80, high VI ?80 to 110, very high VI - above 110. A high viscosity index indicates small viscosity changes with temperature. A low viscosity index indicates high viscosity changes with temperature. Therefore, a fluid that has a high viscosity index can be expected to undergo very little change in viscosity with temperature extremes and is considered to have a stable viscosity. A fluid with a low viscosity index can be expected to undergo a significant change in viscosity as the temperature fluctuates. For a given temperature range, say ?18 to 370o C (0 - 100o F), the viscosity of one oil may change considerably more than another. Oil with a VI of 95 to 100 would change less than one with a VI of 80. Knowing the viscosity index of oil is crucial when selecting a lubricant for an application, and is especially critical in extremely hot or cold climates. Failure to use oil with the proper viscosity index when temperature extremes are expected may result in poor lubrication and equipment failure. |
- Country:India
- telephone:91-91 22 28952367
| The viscosity index, commonly designated VI, is an arbitrary numbering scale that indicates the changes |
You may also like
Send inquiry / quota request to Viscosity Index Improvers
Relate products of Viscosity Index Improvers
It is suitable for lubrication of high-speed / low-torque, low-speed / high-torque or high-speed gears. It is suitable for the lubrication of the drive shafts (front and rear cars), engineering machinery drive axles and some gearbox gears. High speed / impact load ...
Come From SKALN LUBRICANT OIL
Usage (Industrial):Engine Oil Additive Style:Industrial Usage (Automotive):Engine Brand Name:RSEPL Place of Origin:Gujarat India It is recommended for use in gasoline and diesel engine lubricants, and used when excellent shear stability and high temperature ...
Come From Radhaswami Exports Pvt. Ltd.
General Composition:Additives Specification:Other Type:Liquid Application:Automotive Lubricant Place of Origin:Vietnam This product is a washy brown liquid, possessing strong thickening power and also possessing the pour point deprssing ability. ...
Come From ALLIANCE INTERNATIONAL LOGISTICS CO LTD
Type:Liquid Vi - 185kg drum - usd 225.00 Viscosity index (or vi) is a petroleum industry term. It is a lubric ...
Welcome contac us,We'll supply best quality and best price, thanks Also we can supply DISPERSANT, ENERGY-SAVING & ABRASION-RESISTANT ADDITIVES, CD etc. Packing: Drums SJ,SH,SG,CI-4, CG-4,CF-4, requirements on shear stability, such as ACEA A3, B3, B4, E3, CC, CG4, G5, ILSAC ...
General Composition:Additives Specification:Other Type:Liquid Application:Automotive Lubricant Place of Origin:Vietnam This product is a yellow thick liquid, possessing strong thickening power and also possessing the pour point deprssing ability. ...
Come From ALLIANCE INTERNATIONAL LOGISTICS CO LTD
Model Number:T612,T613,T614 General Composition:Base Oil Type:additive Application:Automotive Lubricant Place of Origin:Jilin China (Mainland) The improver is mainly applied in improving and increasing lube oil viscosity indexes. ...
Come From Jilin Xingyun Industrial Trade Co., Ltd of Jilin Chemical Group
Place of Origin:China (Mainland) T612 Ethylene-propylene copolymer Viscosity index improver lubricant additive petrochemical/ additive supply qty:100 ton ...
