摘要
[目的]为提升材料在复杂环境中的综合性能,开发一种同时具备抗菌性与超疏水性的复合功能涂层,以满足工程应用对多重性能的需求。[方法]采用Pechini法合成ZnO颗粒,并通过溶胶-凝胶法制备改性SiO_(2)纳米粒子,结合双层喷涂工艺构建ZnO/SiO_(2)复合微纳结构涂层。系统研究了ZnO在底漆和面漆中的掺杂比例(0%、6%、9%、12%和15%)与表面粗糙度对涂层性能的影响。[结果]当底漆不含ZnO、面漆含ZnO 12%时,涂层性能最佳,静态水接触角达152.20°左右,滚动角小于5°,抗菌测试中的菌落总数降至4.67×10^(4) CFU/cm^(2)。该涂层在pH=1~13的溶液中浸泡15 d后仍保持超疏水性,在砂砾冲击测试中表现出良好的耐磨性。绝缘测试结果表明涂层的相对介电常数为2.39,体积电阻率为9.7×10^(10)Ω·m,表面电阻率为5.4×10^(11)Ω。[结论]该涂层在抗菌性、超疏水性与电绝缘性方面实现了协同优化,表现出优异的环境稳定性和工程应用潜力。
[Objective]To enhance the comprehensive performance of materials in complex environments,a multifunctional composite coating with both antibacterial and superhydrophobic properties was developed to meet the demands of engineering applications requiring multiple functionalities.[Method]ZnO nanoparticles were synthesized via the Pechini method,while modified SiO_(2)nanoparticles were prepared through a sol-gel process.A ZnO/SiO_(2)composite micro/nanostructured coating was fabricated using a dual-layer spraying technique.The effect of ZnO dosage(0%,6%,9%,12%,and 15%)in the primer and topcoat,as well as surface roughness,on coating performance was systematically studied.[Result]When the primer contained no ZnO and the topcoat contained 12%ZnO,the coating exhibited the optimal performance as follows:water contact angle 163.5°,sliding angle below 5°,and total bacterial colony count reduced to 4.67×10^(4) CFU/cm^(2) in antibacterial tests.It maintained its superhydrophobicity after 15 days of immersion in solutions with pH ranging from 1 to 13,and demonstrated good abrasion resistance in sand impact tests.Insulation tests showed a relative permittivity of 2.39,a volume resistivity of 9.7×10^(10)Ω·m,and a surface resistivity of 5.4×10^(11)Ω.[Conclusion]The ZnO/SiO_(2)composite coating achieves synergistic improvement in antibacterial,superhydrophobic,and insulating properties,indicating excellent environmental stability and significant potential for engineering applications.
作者
梁永超
杨震洋
黎元钦
陈智
朱仕惠
LIANG Yongchao;YANG Zhenyang;LI Yuanqin;CHEN Zhi;ZHU Shihui(Guangdong Power Grid Co.,Ltd.,Guangzhou 510600,China;Zhuhai Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Zhuhai 519000,China;Wuhan Shuneng New Materials Co.,Ltd.,Wuhan 430000,China)
出处
《电镀与涂饰》
北大核心
2026年第3期163-176,共14页
Electroplating & Finishing
基金
南方电网公司科技项目(GDKJXM20231290)。
关键词
环氧树脂
氧化锌
二氧化硅
复合抗菌涂层
微生物附着
超疏水
电绝缘
epoxy resin
zinc oxide
silica
antibacterial composite coating
microbial adhesion
superhydrophobicity
electrical insulation
