通过优化固化工艺、有机蒙脱土含量及树脂组分改善环氧涂层的耐热性,制备应用于高温H2S/CO2腐蚀环境中的环氧耐热防腐涂层,采用高温高压釜试验测试了涂层的耐热防腐效果.结果表明:适当的高温处理能显著提高基体树脂的玻璃化转变温度;环氧树脂在80℃机械搅拌条件下插入有机蒙脱土的层间,质量分数为3%的有机蒙脱土在基体中分散均一,为插层/剥离混合型复合结构,兼顾材料的热机械性能和阻隔性能;清漆涂层的玻璃化转变温度为153.7℃,其防腐涂层在150℃以下含H2S/CO2的油气环境中的防腐效果良好,说明玻璃化转变温度作为防腐涂层的使用上限温度是可行的.
参考文献
[1] | Selecting internal coatings for sweet oil well tubing service[S].Houston:NACE International,1999. |
[2] | The performance of organic thermoset coatings when exposed to drilling and completion fluids[S].Houston:NACE International,2001. |
[3] | Peter C. LeBaron;Zhen Wang;Thomas J. Pinnavaia .Polymer-layered silicate nanocomposites: an overvlew[J].Applied clay science,1999(1/2):11-29. |
[4] | R. Sarathi;R. K. Sahu;P. Rajeshkumar .Understanding the thermal, mechanical and electrical properties of epoxy nanocomposites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):567-578. |
[5] | Wang K;Wang L;Wu JS;Chen L;He CB .Preparation of highly exfoliated epoxy/clay nanocomposites by "slurry compounding": Process and mechanisms[J].Langmuir: The ACS Journal of Surfaces and Colloids,2005(8):3613-3618. |
[6] | Chen CG.;Khobaib M.;Curliss D. .Epoxy layered-silicate nanocomposites[J].Progress in Organic Coatings: An International Review Journal,2003(3/4):376-383. |
[7] | 张军科,徐勃.耐热环氧/有机硅/酚醛树脂涂料的研制[J].涂料工业,2008(08):10-12. |
[8] | 汤志刚 .有机硅改性酚醛环氧树脂及其耐热防腐涂料的研究[D].机械科学研究总院,2006. |
[9] | 贾梦秋,白红英,王金玲.环氧有机硅防腐蚀涂料耐热性的研究[J].材料保护,2003(04):54-56,59. |
[10] | 唐捷,张锋,许永辉,郭铭.耐高温涂料使用探讨[J].现代涂料与涂装,2009(03):15-16,20. |
[11] | 郑亚萍,宁荣昌,陈立新.纳米材料对环氧树脂耐热性的改性研究[J].热固性树脂,2006(01):18-20. |
[12] | NACE Standard TM0185-2000.Evalation of internal plastic coatings for corrosion control of tubular goods by autoclave testing[S].,2000. |
[13] | NACE Standard TM0296-2002.Evaluating elastomeric materials in sour liquid environments[S].,2002. |
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