Xie Ying, a manufacturer of modified coal asphalt
Coal asphalt, modified asphalt and medium temperature asphalt are three common asphalt materials, and they have certain differences in chemical composition, physical properties and application fields.
Coal pitch is a by-product of coal tar processing, which is mainly composed of polycyclic aromatic hydrocarbons and contains highly toxic substances, such as benzopyrene. Therefore, there are certain limitations in the application of coal asphalt, such as road construction.
Modified asphalt is the modification of coal asphalt or other natural asphalt by chemical processing methods to improve its performance and application range. The chemical composition of modified asphalt is complex, mainly containing directional compounds and aliphatic compounds, and also contains more polycyclic aromatic hydrocarbons. Compared with coal asphalt, modified asphalt has lower toxicity and excellent performance, and can be used in construction, anti-corrosion, industrial binders and other fields.
Medium-temperature asphalt is a by-product of medium-temperature coal tar processing, and its chemical composition and physical properties are similar to those of high-temperature asphalt. Medium-temperature asphalt is widely used in construction, roads and other fields, and its advantages include good adhesion, anti-corrosion and waterproofing.
In short, there are differences in the chemical composition of coal asphalt, modified asphalt and medium temperature asphalt, and the choice should be made according to the actual needs and uses.