聚合氯化铝原位改性聚氨酯泡沫用于油水分离  

Polyaluminum Chloride In-situ Modified Polyurethane Foam for Oil-Water Separation

作　　者：范雷倚 王锐 何睿杰 张瑞阳[2] 张骞[2] 周莹[1,2] FAN Leiyi;WANG Rui;HE Ruijie;ZHANG Ruiyang;ZHANG Qian;ZHOU Ying(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China;The Center of New Energy Materials and Technology,School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [2]西南石油大学新能源与材料学院,新能源材料及技术研究中心,成都610500

出　　处：《材料导报》2022年第9期188-194,共7页Materials Reports

基　　金：国家自然科学基金石油化工联合基金(U1862111);四川省青年科技创新研究团队专项计划(2016TD0011);四川省学术和技术带头人培养基金。

摘　　要：含油废水的排放造成了严重的环境污染,其净化处理受到了广泛关注。本工作通过原位发泡制备了聚合氯化铝(PAC)改性的聚氨酯泡沫(PAC@PU),研究了其组成结构、表面性质及油水分离性能。所制备的PAC@PU显示出良好的疏水性(水接触角为(140±3)°)和优异的物理、化学稳定性。PAC@PU对泵油的吸收容量高达79.42 g·g^(-1),经200次吸收-挤压循环后吸收容量仍保持不变;对层状油水混合物的静态分离通量和动态分离通量分别为1.55×10^(6) L·m^(-3)·h^(-1)和3.3×10^(5) L·m^(-3)·h^(-1)。PAC@PU对水包油(O/W)乳液的分离效率高达86.7%,分离通量达到了3×10^(5) L·m^(-3)·h^(-1)。机理分析表明,PAC改善了PU的微观结构和表面能,使PU的疏水性增大,并增大了其对油滴吸附位点的捕获能力。因此,PAC@PU具有优异的乳液分离性能。The discharge of oily wastewater has caused serious environmental pollution,and its purification treatment has attracted widespread attention.In this work,the polyurethane foam(PU)modified by polyaluminum chloride(PAC)(PAC@PU)was prepared via in-situ foaming process.The composition structure,surface properties and oil-water separation properties of the samples were studied.The obtained PAC@PU showed outstanding hydrophobicity(hydrophobic angle of(140±3)°)and excellent physical and chemical stability.The absorption capacity of PAC@PU for pump oil reached 79.42 g·g^(-1),which remained unchanged after 200 absorption-extrusion cycles.Moreover,the static separation flux and dynamic separation flux of the layered oil-water mixture were respectively 1.55×10^(6) L·m^(-3)·h^(-1) and 3.3×10^(5) L·m^(-3)·h^(-1) over [e-mail] separation efficiency of PAC@PU for oil-in-water(O/W)emulsions was as high as 86.7%and the separation flux reached 3×10^(5) L·m^(-3)·h^(-1).Mechanism analysis showed that PAC improved the hydrophobicity and surface energy of PU,and enriched the adsorption sites of PU,thereby optimizing the ability of PU to capture the oil droplet in O/W emulsions.Overall,PAC@PU exhibits excellent emulsion separation performance.

关 键 词：聚氨酯泡沫 聚合氯化铝 油水分离 乳液 

分 类 号：O648[理学—物理化学]