高性能低表面处理环氧涂料的制备和性能研究
|
摘要
开发了一种用于表面处理达不到Sa2.5级钢结构表面的高性能防腐涂料,探讨了环氧树脂种类、C9石油树脂用量、固化剂种类和复配用量以及颜基比对涂层干燥时间、基本物理性能和低表面处理底材的附着力的影响。研究表明:以C9石油树脂替换20%的环氧树脂E-20的树脂体系,聚酰胺115和N-(3-氨丙基)吗啉以相等活泼氢量复配作为固化剂体系,颜基比控制在1.8∶1时,涂层综合性能最佳,涂料各项性能均明显高于HG/T 4564—2013《低表面处理容忍性环氧涂料》的要求,潮湿表面附着力16.4 MPa,带锈表面附着力15.7 MPa,长效防腐性能优异。该涂料在各类低表面处理底材上进行涂装性能试验,具备一次施工干膜厚度250μm以上,漆膜表面无异常,满足厚浆型涂料的涂装要求,施工性能优异。
A kind of high performance anti-corrosive coating for steel structure with its surfacetreatmentlevelbelowSa 2.5 hasbeenprepared.Theeffectsofdifferentkindsofepoxyresin,different amounts of C9 petroleum resin,different kinds of curing agents and their mixture as well as pigment/binder ratio on the drying time,basic physical properties and adhesion of the surface-tolerance substrates are investigated. The result shows that the coating has the best comprehensive performance when 20% of epoxy resin E-20 is replaced by C9 petroleum resin,and the curing agent system is mixed wherein the polyamide 115 and 3-morpholinopropylamine is mixed at an equal equivalent of active hydrogen and the pigment/binder ratio is controlled at1.8∶1. Meanwhile,the performance of the coating is obviously better than the requirements of"HG/T 4564—2013 surface-tolerant epoxy coatings". The adhesion on wet surface is up to16.4 MPa and the adhesion on rust surface is up to 15.7 MPa. It has excellent long-lasting corrosion resistance. The coating performance test on surface-tolerance surface shows that it can be applied at a dry film thickness of 250 μm or more,and the surface of the paint film is free of abnormalities. It meets the coating requirements of high-build coatings and has excellent construction performance.
A kind of high performance anti-corrosive coating for steel structure with its surfacetreatmentlevelbelowSa 2.5 hasbeenprepared.Theeffectsofdifferentkindsofepoxyresin,different amounts of C9 petroleum resin,different kinds of curing agents and their mixture as well as pigment/binder ratio on the drying time,basic physical properties and adhesion of the surface-tolerance substrates are investigated. The result shows that the coating has the best comprehensive performance when 20% of epoxy resin E-20 is replaced by C9 petroleum resin,and the curing agent system is mixed wherein the polyamide 115 and 3-morpholinopropylamine is mixed at an equal equivalent of active hydrogen and the pigment/binder ratio is controlled at1.8∶1. Meanwhile,the performance of the coating is obviously better than the requirements of"HG/T 4564—2013 surface-tolerant epoxy coatings". The adhesion on wet surface is up to16.4 MPa and the adhesion on rust surface is up to 15.7 MPa. It has excellent long-lasting corrosion resistance. The coating performance test on surface-tolerance surface shows that it can be applied at a dry film thickness of 250 μm or more,and the surface of the paint film is free of abnormalities. It meets the coating requirements of high-build coatings and has excellent construction performance.
引文
[1]刘新.高性能低表面涂料[J].中国涂料,2004,19(11):42-45.
[2]杨万国,贾思洋,张波,等.低表面处理涂料的研究现状与发展前景[J].现代涂料与涂装,2011,14(2):24-27.
[3]李伟华,田惠文,宗成中,等.低表面处理涂料的配方设计和研究进展[J].涂料工业,2008,38(2):50-54.
[4]常道阳,黄晓峰,李运德.浅谈低表面处理涂料的现状及发展方向[J].中国涂料,2016,31(2):7-9.
[5]伍小军,曾超,王意松.环氧湿固化涂料的研制与应用[J].中国涂料,2016,31(1):42-45.
[6]陈伟胜,刘一呜,刘秉涛.潮湿基面用环氧封闭底涂料的性能研究[J].中国建筑防水,2016(1):1-5.
[7]方健君,覃远斌,马胜军,等.水下施工固化环氧涂料的研究[J].涂料工业,2014,44(8):1-6.
[8]方倩,郭常青,张善贵,等.新型带锈带湿带油涂装涂料的研制[J].涂料工业,2014,44(2):1-6.
[2]杨万国,贾思洋,张波,等.低表面处理涂料的研究现状与发展前景[J].现代涂料与涂装,2011,14(2):24-27.
[3]李伟华,田惠文,宗成中,等.低表面处理涂料的配方设计和研究进展[J].涂料工业,2008,38(2):50-54.
[4]常道阳,黄晓峰,李运德.浅谈低表面处理涂料的现状及发展方向[J].中国涂料,2016,31(2):7-9.
[5]伍小军,曾超,王意松.环氧湿固化涂料的研制与应用[J].中国涂料,2016,31(1):42-45.
[6]陈伟胜,刘一呜,刘秉涛.潮湿基面用环氧封闭底涂料的性能研究[J].中国建筑防水,2016(1):1-5.
[7]方健君,覃远斌,马胜军,等.水下施工固化环氧涂料的研究[J].涂料工业,2014,44(8):1-6.
[8]方倩,郭常青,张善贵,等.新型带锈带湿带油涂装涂料的研制[J].涂料工业,2014,44(2):1-6.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |