混凝土聚脲涂层配套单组分聚氨酯底漆附着性研究.pdf

学兔兔 全国中文核心期刊 杆癯建 中国科技核心期刊 混凝土聚脲涂层配童晕组分聚薏麓熹漆 昀咐善性砥究 吕平，丁国雷，马学强 (青岛理工大学 功能材料研究所，山东 青岛 266033) 摘要：研究了3种用于混凝土防护的聚脲涂层的单组分聚氨酯底漆(底漆1～底漆3)的缺陷封闭效果，考察了环境温度和湿度 对聚氨酯底漆与混凝土附着性能的影响，以及喷涂聚脲后涂层与混凝土之间附着力随时间的变化规律。结果表明，底漆涂刷前为均 匀黏稠体，无凝胶、结块，涂刷后漆膜质量良好，未出现发泡、回缩或缩孔现象；喷涂聚脲后，涂刷3种聚氨酯底漆后聚脲对混凝土的 附着力随着时间的增加而分别增至5．63、5．39、6．09 MPa，随后趋于稳定。 关键词：单组份聚氨酯底漆；聚脲涂层；附着力；缺陷封闭效果 中图分类号：TU56 1．65 文献标识码：A 文章编号：1001—702X(201 1)09—0086～03 Research on the adhesive property of one-component polyurethane primers for concrete protective polyurea coatings LV Pf ，DING Guolei，MA Xueqiang (Institute of Functional Materials，Qingdao Technological University，Qingaao 266033，Shandong，China) Abstract：The defect closure effect of three different types of one-component polyurethane primers (primer 1-3)applied in concrete protective polyurea coatings were researched in this paper．The influence of ambient temperature and humidity to adhesion and the adhesion development trends with time was also studied．The results indicated that：the primer was sticky liquid， no gelling，no lumping before painted，while it performed good coating film quality after painted，no foaming and blebs are detected after painted．The development trend showed that the adhesion reached to 5．63，5．39，6．09 MPa respectively and then kept stable with increasing time． Key words：one—component polyurethane primer；polyurea coating；adhesive strength；defect closure effect 聚脲涂层之间起到良好的连接作用。因此，聚脲在混凝土上应