超支化聚酯改性无溶剂环氧涂料的研制与应用  

Development and application of hyperbranched polyester modified solvent-free epoxy varnish

作　　者：盛恩怀 金志刚 汪开喜 安云岐[3] 张连英[4] 杨棕凯 晁兵 SHENG Enhuai;JIN Zhigang;WANG Kaixi;AN Yunqi;ZHANG Lianying;YANG Zongkai;CHAO Bing(Chizhou Highway Management Center,Anhui Transportation Holding Group Co.,Ltd.,Chizhou 247099,China;Anhui Transport Consulting&Design Institute Co.,Ltd.,Hefei 230011,China;China University Of Mining And Technology,Xuzhou 221116,China;Xuzhou University of Technology,Xuzhou 221018,China;Shanghai Qihai Anti-corrosion Engineering Technology Co.,Ltd.,Shanghai 201914,China)

机构地区：[1]安徽省交通控股集团池州高速公路管理中心,安徽池州247099 [2]安徽省交通规划设计研究总院股份有限公司,安徽合肥230011 [3]中国矿业大学,江苏徐州221116 [4]徐州工程学院,江苏徐州221018 [5]上海岐海防腐工程技术有限公司,上海201914

出　　处：《电镀与涂饰》2021年第22期1734-1740,共7页Electroplating & Finishing

基　　金：安徽省交控集团2018年科技计划(JKKY-2018-06)。

摘　　要：以超支化聚酯CYH-277制备了一种改性无溶剂环氧涂料。经检测,其黏度低,涂层性能良好。用它及现有的环氧清漆、水性环氧地坪底漆、硅烷分别对混凝土试块进行维修涂饰,对比了渗透深度、吸水量比、抗Cl−渗透、抗压强度等性能。结果表明,超支化聚酯改性环氧涂层渗透性好,抗吸水、抗Cl−渗透的能力突出,对混凝土基体有良好的保护作用。由于该双组分涂料活性高,适用期只有8~10 min,因此必须快混快用,优先采用枪外混合喷涂作业模式。A solvent-free epoxy varnish modified with hyperbranched polyester CYH-277 was prepared.Its viscosity is low and its coating has good properties.The penetration depth,water absorption rate,Cl−penetration resistance,and compressive strength of the concrete blocks coated with the hyperbranched polyester modified epoxy varnish for the purpose of repairing were compared with those of the samples coated with a common epoxy varnish,a water-based epoxy floor primer,and silane.The results showed that the hyperbranched polyester modified epoxy coating had good permeability and outstanding resistance to water absorption and Cl−penetration,showing good protection effect on concrete.However,the pot life of the 2K varnish is only 8-10 min due to the high activity of its components.It must be mixed and used quickly,and the spraying mode by mixing the components outside the spray gun is preferred.

关 键 词：无溶剂环氧涂料 超支化聚酯 改性 混凝土 涂装 渗透 维修 

分 类 号：TQ639[化学工程—精细化工]