摘要
为解决传统环氧聚氨酯涂料中异氰酸酯毒性高、固化后涂层脆性大、韧性不佳、耐化学品性和耐盐雾性能差等问题,以有机硅改性的环氧树脂与CO_(2)反应制得的环氧-环碳酸酯为树脂基料(组分A),以聚氧化丙烯二胺(D-230)为固化剂基料(组分B),配以适量的填充材料和防腐助剂,制备一种新型有机硅改性环氧非异氰酸酯聚氨酯(NIPU)防腐涂料。采用FTIR对固化后涂层进行红外表征并对其性能进行测试。实验结果表明:涂料在80℃下实干时间为20 min,外观光滑平整,无起泡、裂纹、剥落等不良现象,再经室温固化7 d后,涂层硬度可达到2H,附着力为0级,耐盐雾时间高达1 500 h。所制备的有机硅改性NIPU防腐涂料具有良好的机械性能和防腐蚀性能。
In order to solve the problems of high toxicity of isocyanate in traditional epoxy polyurethane coatings,high brittleness,poor toughness,poor chemical resistance,and salt spray resistance of the cured coating,a new type of epoxy non-isocyanate polyurethane anticorrosive coating was prepared by using epoxy-cyclocarbonate synthesized by the reaction of silicone modified epoxy resin with carbon dioxide as resin base material(component A),polypropylene oxide diamine as curing agent base material(component B),and proper fillers and auxiliaries.The cured coating was characterized by FTIR and its performance was tested.The results showed that the coating could be dried at 80 ℃ for 20 min,with a smooth appearance and no cracking,blistering or peeling,and then after curing at room temperature for seven days,the hardness could reach 2H,the adhesion was 0 grade,and the salt spray resistance time could reach 1 500 h.The prepared silicone modified NIPU anticorrosive coating had good mechanical properties and corrosion resistance.
作者
李华
齐鹏飞
杨忠花
LI Hua;QI Pengfei;YANG Zhonghua(Henan Provincial Engineering Laboratory of Coal-based Ecological Fine Chemicals,Zhengzhou University,Jiyuan 459000,China;School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《郑州大学学报（工学版）》
CAS
北大核心
2023年第3期102-107,共6页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(52071297)
河南省工程实验室开放基金项目(C202003)。
关键词
环氧树脂
有机硅
非异氰酸酯聚氨酯
防腐
耐盐雾性能
epoxy resin
organosilicon
non-isocyanate polyurethane
anti-corrosion
salt spray resistance
