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将芳纶纸在质量分数为20%的N,N-二甲基乙酰胺溶液中浸泡15min后取出,然后采用喷枪在处理好的芳纶纸表面喷涂聚四氟乙烯(PTFE)纳米颗粒,构造粘附力强的纳米级粗糙表面,制备出疏水亲油型油水分离材料。结果显示,该涂层材料在高温280℃高温下处理0.5h,其接触角仍在125°以上;在强酸强碱环境下,该芳纶纸仍能保持135°左右的水接触角。通过油水分离实验表明,该材料可有效分离轻油、重油(相对于水),分离效率高达99%以上,具有极其广阔的应用前景。
The aramid paper was soaked in 20% N, N-dimethylacetamide solution for 15 minutes and then taken out. Then the surface of the treated aramid paper was sprayed with polytetrafluoroethylene (PTFE) nano-particles using a spray gun to construct a Adhesion strong nano-rough surface, prepared hydrophobic hydrophobic oil-water separation material. The results show that the contact angle of the coating is still above 125 ° C at a high temperature of 280 ℃ for 0.5 h. The contact angle of the aramid paper remains about 135 ° in the strong acid and alkali environment. Through oil-water separation experiments show that the material can effectively separate light oil, heavy oil (relative to water), the separation efficiency of up to 99% or more, has a very broad application prospects.