强韧P(SBMA-co-AAc)/SiO_(2)复合水凝胶海洋防污减阻涂层  

High strength and toughness P(SBMA-co-AAc)/SiO_(2) composite hydrogel marine antifouling and drag-reducing coating

作　　者：李文宝 胡锦鹏 杜淼[2,3] 潘鹏举 单国荣[1] LI Wenbao;HU Jinpeng;DU Miao;PAN Pengju;SHAN Guorong(State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310058,Zhejiang,China;Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310058,Zhejiang,China;Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering,Taiyuan 030000,Shanxi,China)

机构地区：[1]浙江大学化学工程与生物工程学院,化学工程联合国家重点实验室,浙江杭州310058 [2]浙江大学高分子科学与工程学系,浙江杭州310058 [3]山西浙大新材料与化工研究院,山西太原030000

出　　处：《化工学报》2025年第2期787-796,F0004,共11页CIESC Journal

基　　金：山西浙大新材料与化工研究院研发项目(2022SZ-TD008)。

摘　　要：将两性离子甲基丙烯酸磺酸甜菜碱(SBMA)与丙烯酸(AAc)单体共聚,并引入气相SiO_(2)纳米粒子,将化学交联与物理交联相结合,制备了P(SBMA-co-AAc)/SiO_(2)复合水凝胶。添加SiO_(2)粒子有效降低了水凝胶在水及海水中的相对溶胀度,显著提升了水凝胶的强度和模量,在海水中的拉伸强度和杨氏模量可达662 kPa和429 kPa,压缩模量达225 kPa,同时具有高断裂伸长率。水凝胶涂层减阻效果优异,高滑动速率下,表现出低摩擦因数,在1 N的载重下与玻璃表面的摩擦因数可低至0.004。复合水凝胶还表现出优异的抗蛋白吸附和抗菌性能,在马口铁片表面也具有优异的黏结性能。P(SBMA-co-AAc)/SiO_(2)复合水凝胶涂层制备工艺简单、成本较低,可为防污减阻水凝胶涂层的应用提供参考。A composite hydrogel was prepared by copolymerization of zwitterionic betaine methacrylate sulfonate(SBMA)with acrylic acid(AAc)and addition of fumed SiO_(2)nanoparticles,P(SBMA-co-AAc)/SiO_(2),in which both the chemical crosslinking and physical crosslinking coexist.The addition of SiO_(2)particles effectively reduces the relative swelling degree of the hydrogel in water and seawater,and significantly improves the tensile strength and modulus of the hydrogel.The tensile strength and Youngs modulus in seawater can reach 662 kPa and 429 kPa,respectively,and the compressive modulus is 225 kPa.At the same time,it has high elongation at break.The hydrogel coating has excellent drag reduction effect and exhibits a low friction coefficient under high sliding speed.The friction coefficient with the glass surface can be as low as 0.004 under a load of 1 N.The composite hydrogel also shows excellent anti-protein adsorption and antibacterial properties.The hydrogel coating could be adhered on the surface of tinplate sheet with high adhesion energy.P(SBMA-co-AAc)/SiO_(2)composite hydrogel has simple preparation process and low cost,which provides a reference for the application of antifouling and drag-reducing hydrogel coating.

关 键 词：两性离子水凝胶 复合材料 二氧化硅 纳米粒子 力学性能 防污减阻 

分 类 号：TQ317.3[化学工程—高聚物工业]