Coal asphalt manufacturer Gao Xiao
Penetration is a measure of the viscosity and consistency of coal pitch. It refers to the time it takes for a standard needle to pass through the coal pitch under specified conditions. The penetration degree reflects the softness and hardness of the coal pitch, and the requirements for the penetration degree are different for different uses of coal pitch. Generally speaking, the smaller the penetration, the harder the coal pitch, and vice versa, the softer the coal pitch. When evaluating the quality of coal pitch, the penetration degree is an important reference index.
The degree of penetration is closely related to the fluidity of coal pitch. A higher degree of penetration means that the coal pitch has a lower viscosity and better flowability. In the processing process, such as hot pressing, paint preparation, etc., the lower viscosity coal pitch is easier to handle. However, too low penetration may cause the coal pitch to be too soft, which will affect its performance.
There is also a correlation between penetration and the adhesion properties of coal pitch. Generally speaking, coal pitch with higher penetration has better adhesion properties, while coal pitch with low penetration has poor adhesion properties. This property is particularly important in applications such as coatings, adhesives and sealing materials.
Penetration has an important effect on the chemical stability of coal pitch. Coal pitch with higher penetration generally has better oxidation and corrosion resistance, while coal pitch with lower penetration may not perform well in these areas. This is because coal pitch with a high degree of penetration has a relatively dense molecular structure and stable chemical properties.
In the production process, coal pitch with a high degree of penetration is easier to convey and mix because it has better flowability. In addition, coal pitch with a high degree of penetration is also easier to hot work and react because it has a lower hardness. However, if the penetration of coal pitch is too low, it may cause operational difficulties in the production process because it has poor fluidity, which may clog the conveying pipeline or cause uneven mixing.
The penetration of coal pitch has a significant impact on its performance, and the influence of its penetration and its performance should be fully considered when selecting and using coal pitch to meet the needs of specific applications.