摘要
采用环保增塑剂和环保溶剂,以聚醚多元醇和MDI合成预聚体,MOCA为固化剂,研制环保型双组分聚氨酯防水涂料。通过对预聚体-NCO含量、聚醚多元醇的配比、MOCA用量、软硬段比和增塑剂对性能影响的研究,制备的双组分聚氨酯防水涂料力学性能优异,环保性能同时符合GB 19250—2013《聚氨酯防水涂料》中有害物质限量以及《生活饮用水输配设备及防护材料的卫生安全评价规范》的卫生安全性能的要求。
The environment-friendly two-component polyurethane waterproof coating was prepared by environmentfriendly plasticizer and oil,prepolymer with polyether polyol and MDI,and MOCA as a curing agent.The performance influences of polyether ratio,-NCO content,ratio of soft and hard segment,MOCA and plasticizer were investigated.The results of application performance indicated that two-component polyurethane waterproof coating exhibited excellent phy sical and mechanical properties.The environmental performance showed the limits of harmful substances met the standard requirements of GB19250-2013 polyurethane waterproof coating.The health safety performance met the requirements of the standard for hygienic safety evaluation of equipment and protective materials in drinking water.
引文
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