Key points of petroleum solvent selection
2022-05-17 14:30:421. Solubility
The lower the aniline point of the petroleum solvent, the stronger the solvency. The aniline point can directly provide information on the composition of the solvent. The higher the content of aromatic hydrocarbons, the lower the aniline point. In addition, the K-B value (Kauri-Butanol Value) is commonly used in the paint industry to measure the solubility of the solvent. . Generally, the K-B value of aliphatic petroleum solvents is usually between 20 and 30, naphthenic hydrocarbons are slightly higher, and pure aromatic hydrocarbons such as toluene and xylene are as high as 100 or more. The larger the K-B value, the stronger the solubility.
2. Volatile
The volatility of the solvent is also important due to the need for processing and recycling, as well as to save energy consumption. The volatility of the solvent used in the coating industry also affects the surface quality of the coating during construction, so the volatility of the solvent must be controlled. Volatility can be measured by distillation range. In addition, volatility is also related to odor and safety issues. High-volatile solvents usually have a heavy oily smell and a low flash point, which affects the safety of use.
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