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固化剂种类和用量对丙烯酸镁防水材料固化的影响
作者：谷亚新，刘微，梁丽珠，刘运学，范兆荣
（沈阳建筑大学 材料科学与工程学院，辽宁 沈阳 110168）
摘要：以丙烯酸镁溶液为原料，以氧化-还原引发体系过硫酸钠-亚硫酸氢钠、过硫酸铵-三乙醇胺为固化体系，研究固化体系的种类、用量对丙烯酸镁溶液固化时间的影响；并研究交联剂用量对丙烯酸镁溶液固化时间、溶胀性能、遇水膨胀率的影响。结果表明，过硫酸钠-亚硫酸氢钠固化体系引发效率较高；增加氧化剂用量使体系固化时间变短，增加还原剂用量使体系固化时间变长，当氧化剂用量一定时，氧化剂与还原剂配比越大，固化时间越短，溶胀度越大。交联剂用量增加，固化时间变短，凝胶体的溶胀度和遇水膨胀率均降低，凝胶体表面形貌的孔洞越大越多，防水效果较好。
关键词：丙烯酸镁；防水材料；氧化-还原引发体系；固化时间
中图分类号：TU592 文献标识码：A 文章编号：1001-702X（2020）01-0108-04
Effect of type and dosage of curing agent on curing of magnesium acrylate waterproof material
GU Yaxin，LIU Wei，LIANG Lizhu，LIU Yunxue，FAN Zhaorong
（School of Materials Science and Engineering，Shenyang Jianzhu University，Shenyang 110168，China）
Abstract：Using magnesium acrylate solution as raw material，sodium persulfate-sodium bisulfite and ammonium persulfate-triethanolamine as curing systems，the effects of curing system type and dosage on curing time of magnesium acrylate solution were studied，and the effects of crosslinking agent dosage on curing time，swelling property and water swelling rate of magnesium acrylate solution were also studied. The results show that sodium persulfate-sodium bisulfite curing system has higher initiation efficiency，shorter curing time and longer curing time can be achieved by increasing the amount of oxidant and reducing agent. When the amount of oxidant is constant，the larger the ratio of oxidant to reducing agent，the shorter the curing time and the larger the swelling degree，the curing time becomes shorter. With the increase of the amount of crosslinking agent，the swelling degree and water swelling rate of the gel decrease，the larger the surface morphology of the gel，the better the waterproofing effect.
Key words：magnesium acrylate，waterproof material，oxidation-reduction initiation system，curing time