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SiO_2-丙烯酸树脂复合涂层的电化学行为
Authors
乌学东
李渊
+5 more
秦立光
薛群基
赵文杰
郑文茹
金谷
Publication date
1 January 2016
Publisher
Abstract
为了增强丙烯酸树脂涂层的防腐蚀性能,采用硅烷偶联剂KH550分别对微米、纳米SiO_2粒子进行化学改性,再以丙烯酸树脂为基体材料,选择纳米、微米SiO_2填料并控制填料比例制成涂料,涂布在铸铁表面制成SiO_2-丙烯酸树脂复合涂层。采用傅里叶红外光谱仪(FT-IR)表征树脂固化程度,用电化学工作站测试涂层的电化学性能,以扫描电镜(SEM)观察加入纳米、微米SiO_2前后丙烯酸树脂涂层的断面形貌。结果表明:纳米和微米SiO_2的加入有助于提高丙烯酸树脂的耐腐蚀性能,尤其是纳米SiO_2,0.50%(质量分数)改性纳米SiO_2-丙烯酸树脂涂层耐蚀性最好,其Bode谱中低频区的阻抗值达到1.0×105Ω·cm2;改性微/纳米SiO_2复合改性同样可以提高丙烯酸树脂涂层的防腐蚀性能,涂层耐蚀性介于单组分改性纳米SiO_2涂层和改性微米SiO_2涂层之间,改性微、纳米SiO_2总用量0.50%,二者质量比1∶4时涂层抗腐蚀性能最佳
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Last time updated on 22/01/2018