Coal asphalt manufacturer Shi Shan
Modified coal tar asphalt is a special asphalt material, and its preparation process is relatively complex. The origin of modified coal tar bitumen will be detailed below.
1. Coal tar asphalt.
Coal tar bitumen is an asphalt-like substance obtained by distilling coal tar at high temperatures. Coal tar is a by-product of the coking industry, mainly in the dry distillation process of coal. In the coking process, the organic matter in the coal undergoes a pyrolysis reaction at high temperatures to form a variety of organic compounds, including coal tar.
2. Preparation of modified coal tar asphalt.
Modified coal tar asphalt is obtained by modifying coal tar asphalt by specific processing methods. In the process of upgrading, heating, pressurization, catalyst and other means are usually used to change the macromolecular structure of coal tar asphalt, so as to improve its performance. The specific preparation process includes the following steps:
1.Raw material preparation: Coal tar is pre-treated to remove impurities and moisture from it.
2.Heating and melting: The pretreated coal tar is heated to a molten state.
3.Catalyst addition: A catalyst is added to the molten coal tar to facilitate its modification reaction.
4.Heating and pressurization: The coal tar after the catalyst is added is heated to a certain temperature, and a certain pressure is applied for a certain time.
5.Cooling and solidification: The coal tar after heating and pressurization is cooled to room temperature to obtain modified coal tar asphalt.
3. Performance characteristics of modified coal tar asphalt.
Modified coal tar asphalt has the following performance characteristics:
1.High temperature stability: The modified coal tar asphalt has high heat resistance and can maintain good stability in high temperature environment.
2.Good adhesion: The modified coal tar asphalt has good adhesion properties and can form a good bond interface with various materials.
3.Good corrosion resistance: The modified coal tar asphalt has good corrosion resistance to acids, alkalis and other chemicals.
4.Good electrical insulation properties: The modified coal tar asphalt has good electrical insulation properties and can be used to manufacture electrical insulation materials.
5.Environmental protection: Compared with other asphalt materials, the production process of modified coal tar asphalt produces less pollutants such as waste gas and wastewater, and has better environmental performance.
Fourth, the application field of modified coal tar asphalt.
Modified coal tar asphalt has been widely used in many fields, mainly including:
1.Carbon industry, refractory materials, graphite electrode manufacturers use as binders.
2.Other fields: It can also be used to manufacture coatings, adhesives and other products to meet the needs of different fields.
In a word, modified coal tar asphalt, as a special asphalt material, has excellent performance characteristics and application fields. With the continuous progress of science and technology and the change of market demand, the application prospect of modified coal tar asphalt will be broader.