基材表面处理方式对油管内涂层的性能影响研究  

Research on the Effect of Substrate Surface Treatment on the Performance of Oil Pipe Inner Coating

作　　者：王维东 张阿昱 王泽宇[2] 赵苗苗 王维亮 臧伟 王晓波[2] 刘猛 WANG Weidong;ZHANG Ayu;WANG Zeyu;ZHAO Miaomiao;WANG Weiliang;ZANG Wei;WANG Xiaobo;LIU Meng

机构地区：[1]中油国家石油天然气管材工程技术研究中心有限公司 [2]宝鸡石油钢管有限责任公司 [3]陕西省高性能连续管重点实验室

出　　处：《化工装备技术》2024年第2期11-14,共4页Chemical Equipment Technology

摘　　要：随着防腐防蜡的涂层油管在油田中被广泛应用,油管涂覆技术已成为研究热点。为了研究基材不同处理方式对涂层性能的影响,对油管内表面进行喷砂和化学除锈处理,选用无溶剂环氧涂料进行涂覆,对涂层进行表面观察,并对其塑韧性、耐腐蚀性等性能进行检测。实验结果表明:喷砂后材料表面冲蚀坑大小均匀,粗糙度可以达到39.069μm;化学除锈表面出现成片腐蚀,粗糙度为15.145μm,涂层粗糙度仅为2.037μm。两种处理方式涂层的附着力均满足使用要求,但喷砂后的附着力比除锈后的附着力高45%;对涂层进行弯曲、疲劳等性能评价后,涂层均未出现开裂和漏点等现象;经高温高压腐蚀后,化学除锈后试样表面出现鼓泡,但喷砂后材料表面未出现变化。With the widespread application of anti-corrosion and anti wax coated oil pipes in oil fields,oil pipe coating technology has become a hot research topic.In order to study the effect of different substrate treatment methods on coating performance,sandblasting and chemical rust removal treatment were carried out on the inner surface of oil pipes.Solvent free epoxy coating was selected for coating,and surface observation,plasticity,toughness,corrosion resistance and other properties of the coating were tested.The experimental results showed that after sandblasting,the size of the erosion pits on the surface of the material was uniform,and the roughness could reach 39.069μm.The chemical rust removal surface showed patchy corrosion,with a roughness of 15.145μm,and the coating roughness was only 2.037μm.The adhesion of the coatings in both treatment methods met the requirements for use,but the adhesion after sandblasting was 45%higher than that after rust removal.After evaluating the bending,fatigue and other performance of the coating,no cracking or leakage occurred in the coating.After high-temperature and high-pressure corrosion,bubbles appeared on the surface of the sample after chemical rust removal,but there was no change in the surface of the material after sandblasting.

关 键 词：喷砂 化学除锈 油管涂层 塑韧性 耐腐蚀性 

分 类 号：TQ639.1[化学工程—精细化工]