TiO_(2)掺量对氟树脂涂层防腐性能的影响机制  

The influence mechanism of TiO_(2) content on the anti-corrosion performance of fluororesin coatings

作　　者：张学涛 郝利兵 李秦乐 李泓坤 黄智凡 沈佩浒 王敏嘉[2] ZHANG Xuetao;HAO Libing;LI Qinle;LI Hongkun;HUANG Zhifan;SHEN Peihu;WANG Minjia(China Railway First Group Construction Installation Engineering Co.Ltd.,Xi'an 710001,China;School of Civil Engineering and Architecture,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]中铁一局集团建筑安装工程有限公司,陕西西安710001 [2]浙江理工大学建筑工程学院,浙江杭州310018

出　　处：《新型建筑材料》2025年第3期48-52,69,共6页New Building Materials

摘　　要：以亚微米级TiO_(2)粒子作为防腐强化填料,掺入氟树脂乙烯-三氟氯乙烯共聚物(ECTFE)中,采用静电喷涂技术结合热处理工艺在碳钢表面制备TiO_(2)/ECTFE复合涂层。结果表明,复合TiO_(2)可提升ECTFE涂层防腐性能,且性能与TiO_(2)掺量呈正相关。掺10.0%TiO_(2)涂层表面粗糙度与疏水性最优,防腐性能更佳,浸泡30 d后,低频阻抗为6.94×10^(9)Ω·cm^(2)。TiO_(2)粒子通过增加表面粗糙度、致密化填充及迷宫效应协同提升了复合涂层的防腐性能。The submicron TiO_(2) particles were used as an anti-corrosion reinforcing filler to be incorporated into the ethylene-chlorotrifluoroeethylene(ECTFE).The TiO_(2)/ECTFE composite coatings were prepared on carbon steel surfaces using electrostatic spraying technology followed by a heat treatment process.The results indicate that the TiO_(2) can enhance the anti-corrosion performance of the ECTFE coating,with its effectiveness being positively correlated with the TiO_(2) content.The surface roughness and hydrophobicity of the coating doped with 10.0%TiO_(2) are optimal,and the anti-corrosion performance is better.After soaking for 30 days,the low-frequency impedance is 6.94×10^(9)Ω·cm^(2).TiO_(2) particles synergistically enhance the anti-corrosion performance of composite coatings by increasing surface roughness,reducing the internal porosity,and exhibiting a labyrinth effect.

关 键 词：腐蚀防护 TiO_(2) ECTFE 复合涂层 

分 类 号：TU561.67[建筑科学—建筑技术科学]