掺杂纳米Al_(2)O_(3)与改性植酸的复合环氧涂层的制备及其性能研究  

Preparation and Properties of Composite Epoxy Coating Doped With Nano-Al_(2)O_(3)and Modified Phytic Acid

作　　者：于郭 张鹏龙 钱海博 谭娟 殷允杰 王立明 YU Guo;ZHANG Penglong;QIAN Haibo;TAN Juan;YIN Yunjie;WANG Liming(Shaoxing University,Shaoxing,Zhejiang 312000,China;Shaoxing Changmu New Material Technology Co.,Ltd.,Shaoxing,Zhejiang 312072,China;Jiangnan University,Wuxi,Jiangsu 214122,China)

机构地区：[1]绍兴文理学院,浙江绍兴312000 [2]绍兴长木新材料科技有限公司,浙江绍兴312072 [3]江南大学,江苏无锡214122

出　　处：《涂料工业》2025年第2期1-6,13,共7页Paint & Coatings Industry

基　　金：绍兴市柯桥区揭榜挂帅科技攻关项目(2023JBGS302);江苏省自然科学基金项目(SBK2019020945)。

摘　　要：为了提高环氧树脂涂层的防腐性能并赋予其自修复性,在四丁基溴化铵的催化下,将植酸接枝到乙二醇二缩水甘油醚上,并与纳米Al_(2)O_(3)混合掺入到环氧树脂中,制备了一种新型复合环氧树脂涂层。探究了纳米Al_(2)O_(3)质量分数对涂层防腐性的影响,并且对其表面形貌、光泽、力学性能、自修复性和防腐性进行了测试。结果表明:改性植酸和纳米Al_(2)O_(3)的加入显著提高了环氧涂层的表面平整度、光泽和硬度。当改性植酸的含量控制在5%,纳米Al_(2)O_(3)的含量达到5%时,复合涂层的硬度达到H,腐蚀电流密度达到7.85×10^(-8)A/cm^(2),腐蚀电位为−0.805 V。除此之外,复合涂层还具有良好的自修复性。改性植酸和纳米Al_(2)O_(3)的引入显著提高了环氧树脂涂层的防腐性能、自修复性能和耐久性。To enhance the anticorrosive resistance of epoxy resin coating and endow them with self-healing property,a novel composite epoxy resin coating was prepared by grafting phytic acid onto ethylene glycol diglycidyl ether catalyzed by tetrabutylammonium bromide and doped with nano-Al_(2)O_(3)mixed into epoxy resin.The influence of the mass fraction of nano-Al_(2)O_(3)on the anticorrosive resistance of the coating was investigated,along with tests on its surface morphology,gloss,mechanical properties,self-healing ability,and anticorrosive resistance.The results showed that the addition of modified phytic acid and nano-Al_(2)O_(3)significantly improved the surface smoothness,gloss and hardness of the epoxy coating.When the content of modified phytic acid was controlled at 5%and the nano-Al_(2)O_(3)content reached 5%,the composite coating exhibited a hardness of H,the self-corrosion current density reached 7.85×10^(-8)A/cm^(2),and the corrosion potential was-0.805 V.In addition,the composite coating demonstrated excellent self-healing properties.The introduction of modified phytic acid and nano-Al_(2)O_(3)significantly enhanced the anticorrosive resistance,self-healing ability,and durability of the epoxy resin coating.

关 键 词：环氧树脂 改性植酸 纳米Al_(2)O_(3) 防腐性能 功能材料 

分 类 号：TQ635.2[化学工程—精细化工]