Modified coal asphalt: definition, properties and applications.
I. Introduction. Modified coal bitumen, also known as coal tar bitumen or coal tar, is a type of mesophase bitumen processed from coal tar produced during the coal coking process. It occupies an important position in a variety of chemical and engineering applications, including the production of carbon products, rubber, plastics, and waterproofing materials. This article will introduce the definition, properties and applications of modified coal asphalt in detail.
2. Definition of modified coal asphalt.
Modified coal asphalt is made from the by-product obtained from the coal coking process under high temperature and pressure, and then refined and processed. This process can change the molecular weight and chemical structure of coal pitch, thereby improving its properties. Modified coal pitch is a complex mixture of polycyclic aromatic hydrocarbons, hydrocarbons, phenols and other organic compounds.
3. The properties of modified coal asphalt.
Modified coal asphalt has a variety of important physical and chemical properties, such as hardness, thermal stability, viscosity, electrical insulation, etc. These properties make it widely used in many fields. For example, due to its good thermal stability and viscosity, modified coal pitch is widely used in the production of carbon materials and graphite. In addition, due to its good electrical insulation and chemical stability, it is also used in the production of insulating materials and anti-corrosion coatings.
Fourth, the application of modified coal asphalt.
Modified coal asphalt has a wide range of applications in many fields due to its unique physical and chemical properties. Here are some of the main uses:
1.Carbon and graphite production: Modified coal pitch is an important raw material for the production of carbon and graphite materials. These materials are widely used in electrodes, batteries, electric arc furnaces, and crucibles for various high-temperature furnaces.
2.Rubber and plastic additives: Modified coal pitch can be used as a softener and plasticizer for rubber and plastics to improve their elasticity and durability.
3.Waterproofing materials: Due to its good waterproofness and durability, modified coal pitch is widely used in the production of waterproof coatings and waterproofing membranes.
4.Anti-corrosive coatings: Due to its good chemical stability and electrical insulation, modified coal pitch can be used as a raw material for anti-corrosive coatings to protect various equipment and facilities from corrosion.
5.Other uses: Modified coal pitch can also be used to make adhesives, dyes and pesticides.
V. Conclusions. As an important chemical raw material, modified coal asphalt has a wide range of applications in many fields due to its unique physical and chemical properties. With the continuous development of science and technology, the application field of modified coal asphalt will continue to expand. For relevant production and scientific researchers, understanding and mastering the properties and applications of modified coal asphalt is of great significance for making better use of this resource and promoting the development of related industries.