超疏水三聚氰胺海绵粉末的制备及破乳性能  

Preparation and Demulsification Performance of Superhydrophobic Melamine Sponge Powder

作　　者：邓志鹏 赵学之 冯玉军[1] Zhipeng Deng;Xuezhi Zhao;Yujun Feng(Polymer Research Institute,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学高分子研究所高分子材料国家重点实验室,四川成都610065

出　　处：《高分子材料科学与工程》2023年第8期1-8,共8页Polymer Materials Science & Engineering

基　　金：国家自然科学基金石油化工联合基金A类项目(U1762218)。

摘　　要：通过氯化铝溶液和甲基三氯硅烷溶液两步浸泡法制备了一种超疏水三聚氰胺海绵粉末,并对改性样品进行了扫描电镜、红外光谱和X射线光电子能谱分析。从微观结构和化学组成两方面共同揭示了粗糙度增加、硅烷化以及金属离子配位三者协同作用的超疏水转变机理。验证了压实的改性三聚氰胺粉末作为过滤材料用于“油包水”乳液高效分离的性能,讨论了润湿性、压实程度、初始含水率及粒径大小对于海绵粉末破乳性能的影响,发现适当提高材料疏水性、粉末压实程度,降低乳液初始含水率、减小粉末粒径可以有效改善其破乳效率。Superhydrophobic melamine sponge powder was prepared by two-step immersion method in aluminium chloride solution and methyltrichlorosilane solution successively,the modified samples were tested by SEM,FT-IR and XPS to reveal the mechanism of superhydrophobic transformation from the aspect of microstructure and chemical composition:the synergistic effects of increased roughness,silanization and metal ion coordination.The excellent performance of compacted modified melamine powder as filter for the efficient separation of water-in-oil emulsions was then verified.The effects of wettability,compaction degree,initial water content and particle size on the demulsification performance of the sponge powder were further discussed,and it is found that increasing the hydrophobicity,enhancing the compaction degree,reducing the initial water content and decreasing the particle size could effectively improve the demulsification efficiency.

关 键 词：超疏水 三聚氰胺海绵粉末 油水分离 乳液 

分 类 号：TQ323.3[化学工程—合成树脂塑料工业]