防腐及保温管道补口涂层与聚乙烯防腐层搭接处的表面处理技术研究  

Surface Treatment for Overlap of PE Coating and Field Coating at Pipeline Weld Joint

作　　者：陈守平[1] 莫荣[1] 吴迪[1] 

机构地区：[1]大庆油田建设集团工程设计研究院,黑龙江大庆163453

出　　处：《防腐保温技术》2007年第2期11-13,32,共4页Anticorrosion & Insulation Technology

摘　　要：补口的关键是补口涂层与聚乙烯防腐防护层搭接部位的粘接复合是否紧密，本文分析了聚乙烯防腐防护层难粘的原因是由于表面张力小，润湿能力差，非极性高分子，结晶度高和存在弱的边界层，并试验了几种提高聚乙烯防腐防护层粘接性能的方法，对各种方法的适用性提出了初步建议。The key to a quality tield coating at weld joint is the tight aoneslon at me overlap of PE coating and field coating. The causes of bad adhesion are analyzed such as small surface tension, bad wettability, non -polar high molecular, high crystallinity and weak boundary. Several methods are proposed and tested to improve adhesion of PE coating and their adaptability are discussed.

关 键 词：补口涂层 聚乙烯防腐层 搭接处 表面处理 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]