我国高寒地区冬季采煤中由于改向滚筒表面冻粘引起的输送带跑偏、撕裂问题严重制约了冬季煤矿的安全和高效生产。阐述了冻粘产生的机理,介绍了现有的Young,Wenzel,Cassie 3种接触角理论模型,简述了超疏水涂层的自清洁原理,总结了近年来国内外超疏水膜研究进展与制备方法,分析了超疏水膜制备的局限性和应用于改向滚筒的可行性,对解决滚筒冻粘问题作出了展望。
The problems of conveyor belt running deviation and avultion caused by freezing adhesive turnabout roller surface se-riously restricts the safe and efficient production of coal mines in cold regions during winter. The paper illustrated the occurrence mechanism of freezing adhesion, introduced the three existing Young, Wenzel, Cassie contact angle theoretical models, and briefly described the self-cleaning principle of super hydrophobic coating. The research status and preparation methods of super hydropho-bic film in China and foreign countries in recent years were summarized, and the limitations of the super hydrophobic film prepara-tion as well as the feasibility of application on turnabout roller were analyzed. Finally, the solutions to the problem of roller freezing adhesion were prospected.
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