玻璃钢用于管道内防腐的研究

Study on a glass steel for internal pipeline anticorrosion

管道在使用过程中,易受到输送介质的侵蚀,采用玻璃钢/EP(环氧树脂)防腐涂料可有效提高管道内表面的防腐性能。研究了涂层的拉伸剪切强度、耐磨性和冲蚀磨损性能,使用自行设计的冲蚀磨损试验机探讨了冲蚀时间及冲角对涂层冲蚀磨损率的影响。研究结果表明:添加适量的复合固化剂和活性稀释剂,可以缩短防腐涂料的固化时间,增加拉伸剪切强度,便于生产施工;玻璃纤维和纳米Si O2的协同作用,提高了涂层的耐磨性和力学性能;采用单因素试验法优选出制备EP防腐涂料的最佳配方是m(EP)=10.0 g、m(稀释剂660A)=3.0 g、m(玻璃纤维)=1.0 g、m(硅烷偶联剂KH-560)=0.3 g、m(纳米Si O2)=0.5 g、m(固化剂PA650)=4.0 g和m(固化剂T31)=2.0 g,此时产物的综合性能相对最好。

Pipeline is easily corroded by transport medium in use process, but the glass steel/EP （epoxy resin） anticorrosion coating can effectively improve anticorrosion properties of inner surface of pipeline. The tensile shear strength, wear resistance and erosion wear resistance of coating were investigated, the influences of erosion time and erosion angle on erosion wear rate of coating were discussed by self-designed erosion wear test machine. The research results showed that the appropriate amount of composite curing agent and reactive diluent could shorten curing time and increase tensile shear strength of anticorrosion coating, and the production and construction of anticorrosion coating were convenient. The synergistic action between glass fiber and nano-SiO2 could improve the wear resistance and mechanical properties of coating. The optimal formula of preparing EP anticorrosion coating was preferred by single-factor experiment when EP, diluent 660A, glass fiber, silane coupling agent KH-560, nano-SiO2, curing agent PA650 and curing agent T31 were the product had the relatively best comprehensive properties. 10.0,3.0, 1.0,0.3,0.5,4.0,2.0 g, respectively. Here,the product had the relatively best comprehensive properties.