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Lubricant Additive Increased Resistance To Lubricating Oil Flow
Jul 04, 2017

Lubricant additive Increased resistance to lubricating oil flow

Degree index modifier, also known as tackifier or viscosity agent, its output after the clean dispersant. 

The viscosity index improver is an oil-soluble chain polymer, whose molecular weight varies from tens of thousands to several million. Viscosity index improver dissolved in the lubricating oil, at low temperature when they exist in the filament, 

the viscosity of the oil has little effect, with the oil temperature increases, silk roll stretch, the effective volume increases, the flow of lubricants Resistance increases, resulting in a relatively significant increase in the viscosity of lubricating oil. Because the viscosity index improver at different temperatures has different shapes and have different effects on viscosity, it can increase the viscosity and improve the viscosity-temperature performance, 

so the viscosity index improver is mainly used to improve the viscosity index of lubricating oil, 

improve the viscosity-temperature performance, Viscosity. Viscosity index improver can be used to prepare thickened oil, 

so that the preparation of oil has excellent viscosity-temperature performance, 

so that the low temperature of the oil start-up, low fuel consumption and a certain anti-wear effect. 

Viscosity index improver is widely used in internal combustion engine oil, mainly used in the production of multi-stage gasoline and diesel oil, and hydraulic oil and gear oil to use. 

Commonly used viscosity index improvers are: polyisobutylene, polymethacrylate, ethylene propylene copolymer, styrene and diene copolymers and polyethylene n-butyl ether. 

Oil and extreme pressure anti-wear agent 1, extreme pressure anti-wear additives refers to the high temperature, 

high pressure boundary lubrication, and metal surface can form a high melting point chemical reaction film to prevent the occurrence of sintering, bite, scratches additives The Its role is to decompose the product at the friction temperature can react with the metal to produce shear stress and melting point than pure metal compounds, 

so as to prevent contact with the surface of the bite and welding, effectively protect the metal surface. 

Extreme anti-wear agent is mainly used for industrial gear oil, hydraulic oil, rail oil, cutting oil and other extreme requirements of the lubricating oil, in order to improve the extreme pressure anti-wear properties of oil.

Extreme anti-wear agent is generally divided into organic sulfide, phosphide, chloride, organic metal salts and borate type extreme pressure anti-wear agent. 

The main varieties of extreme pressure grinding agent are: chlorinated paraffin, acid dibutyl phosphite, thiophosphoric acid nitrogen derivatives, tricresyl phosphate, sulfurized isobutylene, dibenzyl disulfide, lead naphthenate, 

those who can use the oil to increase the oil film strength, reduce the friction coefficient, improve wear resistance, 

reduce the friction between the moving parts and wear additives are called oily agent. Oily agent is a surfactant, 

one end of the molecule with a polar group, the other end of the oil-soluble hydrocarbon groups. 

The substance containing such a polar group has a strong affinity for the metal surface, which is firmly adhered to the metal surface, forming a protective film similar to the cushion between the metals, preventing the direct contact of the metal surface , Reduce friction and wear. Oily agents have a high interfacial activity, 

they produce physical adsorption or chemical adsorption on the metal surface. Physical adsorption is reversible, 

in the lower temperature, the load is small, the physical adsorption play a role; 

in high temperature and high load adsorbent desorption and loss of role. 

Fatty acid type of oily agent in addition to physical adsorption, there are chemical adsorption,

at a lower temperature and metal surface to generate metal soap, improve wear resistance.