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Long-Term Field Testing of Polyphenylenesulphide Composite Coatings

机译:多聚烯基硫化物复合涂料的长期田间试验

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Researchers at Brookhaven National Laboratory and the National Renewable Energy Laboratory completed long-term tests of polymer-based coating systems intended to reduce the capital equipment and maintenance costs of heat exchangers and other process equipment operating in corrosive and fouling geothermal environments. These coating systems act as barriers to corrosion, protecting low-cost carbon steel tubing. They are formulated to resist wear from hydroblasting and to have high thermal conductivity. Recently, polymer composite systems were exposed to production geothermal fluids for 27 months and 17 months at the Mammoth Pacific LP binary power plant. Analyses of the exposed coatings showed that those using silicon carbide or carbon fiber fillers at the 0.08 wt% level for thermal conductivity and mechanical property enhancement protected the substrate and showed no deterioration, even after hydroblasting. Coatings that used long carbon fiber fillers at 0.15wt% and higher performed poorly because of excessive porosity in the matrix and poor bonding to the primer.
机译:Brookhaven国家实验室和国家可再生能源实验室的研究人员完成了旨在减少换热器和其他过程设备的基于聚合物的涂料系统的长期试验,以及在腐蚀性和污垢地热环境中运行的其他工艺设备。这些涂层系统充当腐蚀的屏障,保护低成本的碳钢管。它们配制成抵抗水粒血管刺激并具有高导热率。最近,在Mammoth Pacific LP二进制电厂将聚合物复合系统暴露于生产地热液中27个月和17个月。暴露涂层的分析表明,在0.08wt%水平的热导率和机械性能增强水平下使用碳化硅或碳纤维填料的那些受到保护基底,并且甚至在水粒溶膜之后也没有劣化。由于基质中的孔隙率过多,并且与引物粘合不良,使用长碳纤维填料的涂层以0.15wt%和更高的涂层较高。

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