Medium temperature coal asphalt manufacturer Mengbei
First, the chemical composition.
Medium-temperature coal asphalt is mainly composed of polycyclic aromatic hydrocarbons and hydrocarbons, among which the content of polycyclic aromatic hydrocarbons is high, which is its main characteristic.
Modified coal asphalt is processed through hydrogenation or oxidation and other modification technologies to improve its quality and performance. The chemical composition of modified coal pitch is more complex, in addition to containing a large number of polyaromatic hydrocarbons, and rich in a certain amount of oxygen, nitrogen and other non-metallic elements.
Second, stability.
The viscosity of medium-temperature coal asphalt is low, the softening point is generally 80 90, and it is susceptible to oxidation, polymerization, deformation and other reactions affected by external factors such as temperature and oxygen, so the storage stability is poor, and it is easy to decompose or gel.
The modified coal asphalt is treated with a softening point of about 110. Therefore, it is more stable at high temperatures, has a longer storage period at room temperature, and is not easily affected by temperature, oxygen, etc.
Third, use. Medium-temperature coal asphalt has a wide range of uses, mainly used in the manufacture of waterproof and anti-corrosion materials, adhesives, carbon products, etc. Due to its low softening temperature and simple operation, it has been widely used in some fields with low requirements.
Due to its excellent heat resistance and coking rate, modified coal asphalt is mainly used to manufacture high-end asphalt products, such as graphite electrodes, high-power electrode rods, high value-added needle coke, asphalt coke, etc. At the same time, it also has a wide range of application prospects in the chemical industry and pharmaceutical industry.
In summary, there are significant differences between medium-temperature coal asphalt and modified coal asphalt in terms of chemical composition, stability and use. In practical application, the appropriate coal asphalt products should be selected according to the specific needs and sites.