Chain is an important part of the connection of mechanical components. It has the performance characteristics of gears and belts. It is widely used in metallurgy, textiles, glass, electric power, automobiles, cement, mine, paper, petrochemical and other high temperature, high humidity, heavy load and other occasions. Essence The medium that provides lubrication for chain is called "chain lubricant". The performance differences of chain lubricants with different quality and disadvantages can reach 200 times. The use of chain lubricants with different components of basic oil and formula is very different.
1. Types of the main chain lubricant Depending on the components of basic oil, it can be divided into two types: mineral type and synthetic oil Mineral type: low flash point, large gray portion, poor adhesion, scorching, restrictions on application occasions, foreign abroad has long been eliminated.
Synthetic type: PAO synthetic hydrocarbon: The compatibility with mineral oil is good, excellent in comprehensive performance, and the cost is lower than other synthetic oils. Domestic oils still have a certain percentage of PAO class. POE synthetic ester: divided into bisodescete, polyol ester, compound ester, etc. It has excellent high temperature stability, small volatility, and good solubility. It has a cleaning effect on the accumulation of carbon at high temperature, and the biodegradable degradation effect is good. PAG polyether: good high temperature, clean performance, good abrasion resistance, while absorbing water in the air without reducing its use performance. The disadvantage is that the temperature is not high, and the flash point is generally about 230 ° C; the phase solubility of other basic oils and additives is not good, high volatile, and promotion is more restricted. For different use environments, you can choose a typical application area of different chain lubricating oil and various types of chain oil: 2. Different types of synthetic high temperature chain oil formula process This chapter will focus on the preliminary exploration of related formulas and production processes for high-temperature chain oils of saturated polyol ester. At present, synthetic basic oils that are common and easy to obtain on the market include polyma-olefins (PAO), synthetic ester (POE), synthetic synthesis (POE), synthetic synthesis Polyether (PAG), etc. Depending on the requirements of the use temperature range and application occasions, different types of synthetic basic oils can be selected, and they can be configured according to various types of high -temperature antioxidants, polar pressure antie wear agents, rust -proof agents, passivation agents, etc. as a carrier. PAO type high temperature chain oil The basic advantages and disadvantages of the basic oil of the polyzan olefin (PAO) type synthetic: 1) High flash point, high -combustion point, high safety, low evaporation loss 2) High viscosity index, excellent viscosity, low temperature and cold starting performance and high temperature stability performance 3) Good thermal stability, oxidation stability performance, 4) Good hydrolysis stability performance 5) It is completely dissolved with mineral oil and ester oil, and high viscosity PAO is compatible with all sealing materials of all mineral oil 6) Non -toxic, the first choice for many food -grade lubricants 7) Compared with mineral oil, ester oil and polyether, the lubrication is slightly worse 8) Poor solubility to certain additives 9) High viscosity PAO biodegradability is poor According to US5151205 reports from foreign high -temperature chain oil patents, based on PAO as the Base Oil, a small amount of synthetic ester oil is added as an increase in solvents, with 2 ~ 4%polycutthne (PIB) as adhesive The chain oil has low evaporation loss and lasting lubrication performance. Under the same use conditions, the mineral oil type chain oil produces a large amount of smoke, and the formula oil is almost generated in use, which can be used for use temperature 200 ° C at 200 ° C ° C Inside. PAG polyether type high temperature chain oil Polyether used for high temperature chain oil base oil is usually average or polymer of ethylene oxide and propylene oxide. It is usually divided into water -soluble polyether and water insoluble polyether. Among them, water insoluble polyether can be applied to high temperature Basic oil of chain oil. Polyether has good high and low temperature performance, ultra high viscosity index, and it is not easy to focus under high temperature and high pressure, has good lubrication performance, and can easily obtain various high viscosity polyether according to needs. Polyether-type hightemperature chain oil has been successfully used in the textile printing and dyeing industries. Based on epoxy propane cluster as the base oil, an appropriate amount of high temperature antioxidants, rust-proof agent and other additives are added. Oil has a good performance price ratio. Synthetic ester (POE) type high temperature chain oil Synthetic ester oil is generated by the acid and alcohol reactions of different structures. Common esters are monoclodine, dual -ester, polyol ester, compound ester, etc. The main synthetic ester oil that can be applied to screw -type Air Compressor Oil is mainly used in the main oil type oil. There are bisodidthyl, saturated polyol ester (triam hydroxytalopyl, \ polenate \ ductive tetraoxyl ester, etc.). The commonly used biomedica is dietic acid, dose acid, 2-ethyl ester, etc.; Polyol ester is made by polyol alcohol and one meta acid reaction. Among them, the (dual) seasonal pentol alcohol synthetic basic oil has excellent high temperature performance, high temperature coking volume and evaporation loss, and excellent cleaning performance of the coke plate surface. POE -based basic oil has the following characteristics: (1) High flash point, high combustion point, high safety, maximum use temperature can reach 280 ℃ (2) Good thermal oxidation stability performance, low volatile performance (3) Good abrasion, abrasion, abrasions and defeat characteristics, effective energy saving (4) Good lubrication performance (5) Good additive dissolving performance (6) Has good phase-soluble performance with mineral oil, poly A-olefin, etc. (7) Non -toxic, excellent biodegradation performance For the different formulas, environmental requirements, and use occasions of synthetic polyol ester high -temperature chain oil, there can be more than a dozen different structural formulas to meet the needs of high -temperature lubrication of various brands of imports or domestic equipment.
