Popular science molybdenum disulfide
Molybdenum disulfide coating is a common smooth coating for light load and low speed sliding and heavy load rolling friction surface. The molybdenum disulfide maintenance layer formed after spraying can effectively extend the service life of components. The coating has good abrasion resistance, load bearing and smooth performance under medium and high temperature (~ 260 ° C) environment, and has anti-corrosion, oil resistance, and cavitation resistance. It can be used for appearance protection, anti-corrosion, sealing, smoothness and extended parts. The role of life.
Molybdenum disulfide coating is commonly used for the smoothness of most sliding mechanical parts including sliding bearings, bushing gearboxes, guide rails, cams and conditioning valves, and has a self-smoothing effect instead of smooth oil.
In the preparation of water-based molybdenum disulfide coatings, it is necessary that molybdenum disulfide coatings have excellent mobility and have good dispersibility, wetting and leveling properties, and coverability. In order to fully play the role of molybdenum disulfide coatings, Anti-corrosion, sealing, smooth and other properties.
Molybdenum disulfide is the main filler in coatings. Because molybdenum disulfide powder has low external surface energy and strong hydrophobicity, molybdenum disulfide dispersant is required to stop the appearance and dispersion of molybdenum disulfide, and change the adsorption layer of the particle surface. The physical and chemical properties make its appearance hydrophobic and hydrophilic. The molybdenum disulfide dispersant makes the molybdenum disulfide powder more easily dispersed in the coating, reduces the viscosity, and improves the dispersibility of the molybdenum disulfide coating. Only in the course of adopting the spraying process can the performance of molybdenum disulfide be fully utilized.
In addition, consider an important issue is that when the molybdenum disulfide coating is sprayed, it is necessary to consider the tension of the external appearance of the metal device, and we need to participate in a wetting and leveling agent to reduce the external surface tension on the metal device. It has excellent leveling properties to prevent oil dimples and shrinkage.
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