In our life, coal tar pitch is widely used. Coal tar pitch can be used for paving, roofing, waterproofing, etc. Its performance is very superior, so it can achieve very good results when used. Today we will mainly learn about the various types of coal tar pitch and the applications of each category of coal tar pitch.
① Low temperature coal tar asphalt, which is a type of asphalt with a softening point between 35 ℃ and 75 ℃, is mainly used for paving, waterproofing materials, and deep processing to obtain epoxy coal tar asphalt.
② The softening point of medium temperature coal tar pitch is slightly higher than that of low temperature pitch, between 75 ℃ and 95 ℃. When producing carbon products such as graphite electrodes, metallurgical carbon blocks, and calcium carbide, Chinese coal tar pitch is used.
③ The softening point of high-temperature coal tar pitch is between 120 ℃ and 250 ℃, and it is mainly used as wear-resistant carbon in mechanical seals. It is also an established material and an important component of activated carbon.
④ Modified coal tar pitch is made by using matrix asphalt as the raw material, adding a certain proportion of SBS modifier, and uniformly mixing and dispersing it through shearing, stirring, and other methods to modify coal tar pitch. During the use of modified coal tar asphalt, it has shown excellent resistance to high and low temperatures, as well as excellent elasticity and toughness. Using it to lay roads can effectively improve the fatigue resistance of the road surface and reduce permanent deformation. Modified coal tar asphalt has excellent adhesion ability, which can effectively improve the tensile strength of the road surface after encountering water, greatly ensuring stability and improving the skid resistance of the road surface.
Post time: 07-03-2024
