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Field Joint Coatings - Heat-Shrinkable Sleeve Systems

机译:现场接头涂层-热缩套管系统

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摘要

Heat-shrinkable sleeves are the most widely used technology in the world today for field girth-weld corrosion protection because they're easy to install, provide excellent protection, and are cost-effective. What makes these products unique and why is it that many specifiers rely on them for the high-quality field joint corrosion protection?rnThe first heat-shrinkable sleeves were introduced over 30 years ago when polyethylene pipeline coatings started to replace bituminous or tape coatings in the oil and gas industry. Back then, the processing for polyethylene to make the sleeve backing was new technology and the adhesives used in sleeves were much the same as those used on pipeline coatings.rnThe technology behind cross-linking polyolefin materials (polyethylene and polypropylene) to make sleeves has advanced since then, and adhesives used today are formulated to provide performance under demanding pipeline conditions. The technology is interesting since it involves molecular chemistry in the backing, combined with pressure sensitive or hot-melt adhesives. Epoxy primers are also used for 3-layer systems for maximum corrosion protection.
机译:热缩套管是当今世界上用于现场环焊腐蚀防护的最广泛使用的技术,因为它们易于安装,提供出色的防护并且具有成本效益。这些产品与众不同的原因是什么,为什么许多规格者依靠它们来提供高质量的现场接头腐蚀保护?rn 30年前,当聚乙烯管道涂料开始取代沥青或胶带涂料时,出现了第一个热缩套管。石油和天然气工业。那时,用于制造衬套衬里的聚乙烯的加工是一种新技术,用于衬套的胶粘剂与用于管道涂料的胶粘剂基本相同。rn交联聚烯烃材料(聚乙烯和聚丙烯)以制造衬套的技术已经发展起来从那时起,如今使用的胶粘剂经配制可在苛刻的管道条件下提供性能。这项技术很有趣,因为它在背衬中涉及分子化学,并结合了压敏或热熔粘合剂。环氧底漆还用于三层系统,以实现最大程度的腐蚀防护。

著录项

  • 来源
    《Pipeline & gas journal》 |2008年第7期|84|共1页
  • 作者

    Robert Buchanan;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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