3PE防腐层剥离强度测试的破坏形式  

Research on 3PE coating peel strength test for failure modes

作　　者：冯少广[1] 李东阳[1] 张海磊 赵君[1] 李明红 周武龙 吴定勇 刘国豪[1] FENG Shaoguang;LI Dongyang;ZHANG Hailei;ZHAO Jun;LI Minghong;ZHOU Wulong;WU Dingyong;LIU Guohao(PetroChina Pipeline R&D Center//National Engineering Laboratory for Pipeline Safety;PetroChina Southwest Pipeline Company;Yunnan Taian Engineering Technology Consulting Co.Ltd.)

机构地区：[1]中国石油管道科技研究中心·油气管道输送安全国家工程实验室,河北省廊坊市065000 [2]中国石油西南管道公司 [3]云南泰安工程技术咨询有限公司

出　　处：《油气储运》2020年第11期1274-1279,1285,共7页Oil & Gas Storage and Transportation

基　　金：中石油管道有限责任公司课题“3PE管道防腐层剥离机理及对策研究”,2016B-3107-0501。

摘　　要：剥离强度测试是评价三层结构聚乙烯(3PE)防腐层粘结性能及涂敷质量的主要方法,分析剥离强度及剥离后防腐层破坏形式可以获得管道涂敷工艺控制及原材料性能等方面的关键信息。通过分析16个典型3PE样品在不同测试条件下的40个测试结果,总结了3PE防腐层的7种主要破坏形式,分析了不同破坏形式与涂敷工艺和材料性能之间的关系。研究了测试温度和剥离速度对防腐层破坏形式的影响:不同温度区间内同一样品可能呈现不同的破坏形式;随着剥离速度的加快,剥离界面会出现粗糙程度增加甚至被撕裂的情况。研究结果为3PE防腐层剥离强度测试结果的判定及标准指标的完善提供了数据支持。(图9,表2,参21)The peel strength test is the main method to evaluate the adhesion performance and coating quality of 3-layer polyethylene(3PE)coating,and the key information concerning coating process control and raw material performance of pipeline can be obtained by analyzing the peel strength and failure modes of coating peeled.Through the analysis on 40 test results of 16 typical 3PE samples under different test conditions,7 types of failure modes of 3PE coating were summarized,and the relationship between various failure modes and the coating process and material performance were analyzed.Futhermore,the effect of test temperature and peeling rate on the failure modes of coating was also studied.The same sample may present different failure modes in different temperature ranges.With the increase of peeling rate,the peeling section will show increase in roughness and even be torn.Research result provides data support to the judgment on the results of peel strength test and the improvement of standard indicators of 3PE coating.(9 Figures,2 Tables,21 References)

关 键 词：3PE防腐层 剥离强度 破坏形式 测试温度 剥离速度 结果评价 

分 类 号：TE988[石油与天然气工程—石油机械设备]