纳米二氧化硅复合涂料的制备及其性能

ZHANG Weiguo; WANG Xiaoyan; YAO Suwei; WANG Hongzhi

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纳米二氧化硅复合涂料的制备及其性能

更新时间：2025-12-10

- 纳米二氧化硅复合涂料的制备及其性能
- CIESC Journal Issue 11, (2006)
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- Online First：25 November 2006，
  
  Published：25 November 2006
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ZHANG Weiguo, WANG Xiaoyan, YAO Suwei, et al. 纳米二氧化硅复合涂料的制备及其性能[J]. CIESC Journal, 2006, (11).
DOI：

ZHANG Weiguo, WANG Xiaoyan, YAO Suwei, et al. 纳米二氧化硅复合涂料的制备及其性能[J]. CIESC Journal, 2006, (11). DOI：

摘要

通过表面改性技术制备了疏水性的纳米二氧化硅粒子，粒径约50 nm.在机械搅拌和超声场共同作用下，将纳米二氧化硅均匀分散到聚氨酯清漆中，制得纳米二氧化硅复合涂料，考察了纳米二氧化硅复合量对复合涂料性能的影响.直接腐蚀实验、阳极极化和交流阻抗测试结果表明，加入偶联剂改性的纳米二氧化硅后，复合聚氨酯清漆在氯化钠溶液中的抗腐蚀能力明显提高，浸泡腐蚀失重量减小约20％～70％，阳极腐蚀电流降低1个数量级以上，低频区涂层阻抗值增大2个数量级以上.油漆剪切强度和剥离强度实验显示，纳米复合漆膜的附着力增加.

Abstract

Hydrophobic nano-SiO2 particles were prepared by surface modification，and the diameter of nano-SiO2 was about 50 nm.Nano-SiO2 composite coating was obtained by adding nano-SiO2 particles into the polyurethane varnish through mechanical agitation and ultrasonic dispersing.Linear sweep voltammetry，electrochemical impedance spectroscopy（EIS）and mass loss measurements were used to evaluate the anti-corrosion property of the nanocomposite coating in NaCl solution.The results showed that the corrosion resistance of nano-composite coating was improved by adding modified nano-SiO2 particles.The anodic corrosive current of nanocomposite coating was decreased by about 1 order of magnitude，and the corrosion rate of nanocomposite coating was about 20%—70% lower than that of the original polyurethane varnish.In addition，the adhesion of nanocomposite coating was improved by adding modified nano-SiO2 particles.The influence of nano-SiO2content on the performance of nanocomposite coating was also discussed.

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