碟状α-磷酸锆在聚酯粉末涂料中的防腐蚀作用研究

doi:10.12020/j.issn.0253-4312.2019.11.32

涂料工业 ›› 2019, Vol. 49 ›› Issue (11): 32-39. doi: 10.12020/j.issn.0253-4312.2019.11.32

碟状α-磷酸锆在聚酯粉末涂料中的防腐蚀作用研究

司徒粤¹,纪维维¹,黄洪¹,史英骥²

1.华南理工大学化学与化工学院，广州 510640；
2.广东涂亿科技有限公司，广东佛山 528000

收稿日期:2019-03-13 修回日期:2019-10-10 出版日期:2019-11-01 发布日期:2019-11-01
通讯作者: 司徒粤 E-mail:situyue@scut.edu.cn
作者简介:司徒粤（1976—），男，博士，副研究员，主要研究方向为粉末防腐涂料、溶剂型重防腐环氧涂料。
基金资助:
国家自然科学基金

Study on Effect of α-Zirconium Phosphate on Corrosion Resistance of Polyester Powder Coatings

Situ Yue¹，Ji Weiwei¹,Huang Hong¹，Shi Yingji²

1. School of Chemistry and Chemical Engineering， South China University of Technology，Guangzhou 510640， China； 2. Guangdong Toeasy Technology Co., Ltd., Foshan，Guangdong 528000，China

Received:2019-03-13 Revised:2019-10-10 Online:2019-11-01 Published:2019-11-01

摘要/Abstract

摘要： 利用水热法合成了碟状 α-磷酸锆（ α-ZrP）并以此为功能填料制备了新型防腐聚酯粉末涂料，采用 SEM、FT-IR和 XRD对磷酸锆的物理形貌和化，学结构进行了表征，分别运用 TGA-DTG和 SEM分析了防腐涂料涂层的热稳定性与微观形貌。以 3.5%NaCl水溶液模仿海洋环境，测试了不同 α-ZrP含量的聚酯粉末涂层在浸泡过程中的交流阻抗谱（ EIS）和极化曲线（ LSV）分析了 α-ZrP对涂料防腐性能的影响。结果表明：添加碟状 α-ZrP能够大幅增强聚酯涂层的耐腐蚀能力，腐，蚀电压显著正移，腐蚀电流密度下降 1~3个数量级。当 α-ZrP的含量占总组分的 3%时，涂层的防腐性能达到最佳。

关键词: 磷酸锆（α-ZrP）, 聚酯粉末涂料, 防腐, EIS, LSV

Abstract: Disc-like α-zirconium phosphate（α-ZrP）was synthesized using hydrothermal method and used as a functional filler to prepare the novel polyester powder anti-corrosion coatings. The physical morphology and chemical structure of zirconium phosphate were characterized by using SEM，FT-IR and XRD. The thermal stability and micromorphology ofthe anticorrosion coatings were investigated using TG-DTG and SEM respectively. The impedance spectra（EIS） and polarization curves（LSV） of polyester powder coatings with different content of α-ZrP were tested in a 3.5wt.%NaCl aqueous solutionto simulate the marine environment for different time. The effect of α-ZrP on corrosion resistance of polyester powder coatings was analyzed. The results showed that addition of α-ZrP could significantly improve the anticorrosion performance of the polyester coatings with a reduction of corrosion current density by 1~3 orders of magnitude compared with the pure polyester coatings，and the corrosion voltage of the coatings also shifted positively. When the content of α-ZrP was 3% of the total composition，the coatings provided the best corrosion resistance.

Key words: α-zirconium phosphate (α-ZrP), polyester powder coatings, anticorrosion, EIS, LSV

中图分类号:

TQ635.2

司徒粤纪维维黄洪史英骥. 碟状α-磷酸锆在聚酯粉末涂料中的防腐蚀作用研究[J]. 涂料工业, 2019, 49(11): 32-39.

Situ Yue, Ji WeiweiHuang Hong, Shi Yingji. Study on Effect of α-Zirconium Phosphate on Corrosion Resistance of Polyester Powder Coatings[J]. Paint & Coatings Industry, 2019, 49(11): 32-39.

https://www.cn-pci.com/CN/Y2019/V49/I11/32

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