操白浆,国产在线观看91精品,国产精品自在线,国产亚洲欧洲精品,国产精品成人亚洲,欧美成人精品免费播放,最新自拍偷拍视频

 
CN    EN 
Button Text

Details description

Create a well-known brand, the industry's first fight

NEWS
Why add additives in lubricants?
Source: | Author:haiyangshiyou | Published time: 2017-12-06 | 1392 Views | Share:
Lube base oil has the basic characteristics of lubricants and some performance, but only rely on the processing technology to improve the lube, and can not produce a variety of properties are in line with the requirements of lubricants. To make up for some of the nature of the defects of lubricants and lubricants to give some new excellent properties, lubricating oil to add a variety of different additives. The addition amount from a few millionths to tens of percent. The role of additives mainly in two aspects: First, change the physical properties of lubricants, such as viscosity, freezing point; Second, increase or enhance the chemical properties of lubricants, such as anti-corrosion and so on. The use of lubricant additives not only meets the requirements of various new types of machinery and engines, but also lengthens the service life of lubricants and reduces the demand for lubricants in the petroleum products.