Coal asphalt manufacturer Gao Xiao
Coal pitch is a common additive in anticorrosive coatings because of its good water resistance, corrosion resistance and weather resistance. Coal pitch is mainly composed of polycyclic aromatic hydrocarbons, which can chemically react with other components in the coating to form a denser anticorrosive coating. The properties of coal pitch are mainly determined by its chemical composition and process treatment. Generally speaking, high-quality coal pitch has high adhesion, good wettability, and strong adhesion, which can effectively improve the anti-corrosion performance and bond strength of coatings.
Different types of coal pitch have different properties due to their different manufacturing processes, raw materials and impurities. When choosing coal pitch, it is advisable to consider the following:
1. Chemical stability, high-quality coal pitch should have good chemical stability, not easy to react with the medium, and can maintain performance for a long time.
2. Adhesion, strong cohesion helps the coal pitch to be tightly bound to various substrates, thereby improving the anti-corrosion performance of the coating.
3. Mechanical properties, good mechanical properties can resist the influence of external factors such as temperature changes and environmental erosion, so that the coating is not easy to deform, crack and other problems.
4. Wettability, good wettability helps coal pitch to better infiltrate the surface of the substrate and form a uniform and dense coating.
5. Weather resistance, excellent weather resistance can make the coating maintain stable performance under various climatic conditions.
6. Economy. Considering the cost and engineering requirements, reasonable ** and lower coating cost are also important factors in choosing coal pitch.
In practical applications, according to the different requirements and uses of anticorrosive coatings, different types and qualities of coal pitch can be selected.