本文分析了甲醇-汽油体系中水含量、温度、汽油组成等因素对其互溶性的影响,论述了助溶剂的作用机理与助溶剂的选择。水含量越高、温度越低则互溶性越差,反之亦然。醇类助溶剂助溶效果强于酯类、醚类等助溶剂,复配助溶剂助溶效果强于单组份助溶剂。 This article analyzes the methanol - gasoline system water content, temperature, composition of gasoline and other factors on their mutual solubility, discussed the mechanism of cosolvent and cosolvent selection. The higher the water content, the lower the temperature the worse the mutual solubility, and vice versa. Alcohol co-solvent solubilization effect stronger than ester, ether and other co-solvents, co-solvent co-solvent effect stronger than the single-component co-solvent.