钙离子交换硅胶防锈颜料的合成及在卷材涂料中的性能研究  

Synthesis of calcium ion exchange silica gel and study on its properties as antirust pigment in coil paint

作　　者：廖欢 侯欣怡 李潇咏 余慧群 蓝擎 李一凡 莫雅冰 黄灏彬 LIAO Huan;HOU Xinyi;LI Xiaoyong;YU Huiqun;LAN Qing;LI Yifan;MO Yabing;HUANG Haobin(Institute of New Functional Materials of GIIT,Co.,Ltd.,Nanning 530200,China)

机构地区：[1]广西产研院新型功能材料研究所有限公司,广西南宁530200

出　　处：《电镀与涂饰》2023年第2期54-59,共6页Electroplating & Finishing

基　　金：桂科AB22080003。

摘　　要：通过对钙离子交换得到的SiO_(2)凝胶进行晶化处理得到特制硅胶,研究了钙离子交换硅胶的粒径、形貌及对不同卷材底漆的防锈性能与贮存稳定性的影响,并与磷酸锌、格雷斯CS311等常见防锈颜料进行对比。结果表明,粒径较小、疏松多孔的钙离子交换硅胶在环氧底漆中的防锈效果及贮存稳定性最佳。这归因于该硅胶在底漆应用中生成了致密的惰性硅-钙-铁保护膜,阻碍了腐蚀性H+直接接触金属。A special silica gel was obtained by calcium ion exchange and crystallization. The effects of particle size and morphology of the calcium ion exchange silica gel on rust resistance and storage stability of different primers for coils were studied, and compared with two common antirust pigments i.e. zinc phosphate and Grace’s SHIELDEX?CS311. The results show that the small and porous calcium exchange silica gel provides the best antirust effect and storage stability for epoxy primer. This is attributed to the fact that the silica gel creates a compact and inert silicon–calcium–iron film after application of the primer, preventing the direct contact of metallic substrate with the corrosive H+.

关 键 词：钙离子交换 硅胶 防锈颜料 环氧 聚酯 卷材涂料 贮存稳定性 耐蚀性 

分 类 号：TQ628.1[化学工程—精细化工]