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首页> 外文会议>Corrosion conference and expo 2010 >New Developments of Mid-Tg FBE powder coatings to meet the requirements of pipe coaters and pipeline owners
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New Developments of Mid-Tg FBE powder coatings to meet the requirements of pipe coaters and pipeline owners

机译：满足管道涂料商和管道所有者要求的中Tg FBE粉末涂料的新发展

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The development of oil and gas fields at increasing depths in recent years, both onshore and offshore, and the need for pipelines to carry viscous media such as oil sands at high temperature to improve flow efficiency, has created a requirement for the coatings used to protect such pipelines from corrosion to be able to operate in a temperature range 120-150°C. One of the most successful coating types for the corrosion protection of steel pipes is Fusion Bonded Epoxy (FBE) powder coatings but, until now, the range of options available for pipelines operating at high temperatures has been mainly limited to either a standard FBE applied at a higher film thickness or as a dual-layer system, or an FBE with a high glass transition (Tg) of the film, applied as a primer for a 3-layer polypropylene system.Whilst it is widely accepted that it is preferable for the Tg of the coating film to be at least 10°C above the operating temperature of the pipeline there are few FBE coatings commercially available with a film Tg in the range 130-160°C to allow them to be used at the higher operating temperatures now required. The few that do exist have relatively limited flexibility particularly at low temperatures which limits the range of environmental conditions that pipelines coated with such products can withstand.This paper presents the development of a range of Mid-Tg-FBE powder coatings with film Tg's in the range 130-150°C and test methods with conclusions. These coatings demonstrate excellent adhesion and mechanical performance, even at temperatures down to -60°C, thus greatly expanding the range of field conditions and pipeline operating temperatures that can be accommodated. The excellent flexibility of these coatings enable them to be applied as a single-layer FBE coating, and as a dual-layer FBE coating system, as well as a primer for 3-layer polypropylene systems. The growing commercial track record of these products is confirming the excellent results seen in production and laboratory testing.
机译：近年来，陆上和海上深度上油气田的发展以及对管道输送高温下诸如油砂之类的粘性介质以提高流动效率的需求，对用于保护的涂料提出了要求。这样的管道从腐蚀到能够在120-150°C的温度范围内运行。用于钢管腐蚀防护的最成功的涂料类型之一是熔融粘结环氧（FBE）粉末涂料，但到目前为止，高温下运行的管道的可用选项范围主要限于在以下条件下使用的标准FBE：较高的膜厚或用作双层体系，或具有高玻璃化转变温度（Tg）的FBE，用作3层聚丙烯体系的底漆。 尽管人们普遍认为涂膜的Tg最好比管道的工作温度高至少10°C，但是很少有FBE涂料在市场上可以买到，其Tg在130-160°C至允许它们在现在要求的更高工作温度下使用。确实存在的少数几个具有相对有限的柔韧性，特别是在低温下，柔韧性限制了涂有此类产品的管道可以承受的环境条件的范围。 本文介绍了在130-150°C范围内具有Tg薄膜的一系列Mid-Tg-FBE粉末涂料的开发以及结论的测试方法。这些涂料甚至在低至-60°C的温度下也表现出出色的附着力和机械性能，从而大大扩展了可适应的现场条件和管道工作温度范围。这些涂料具有出色的柔韧性，使其既可以用作单层FBE涂料，也可以用作双层FBE涂料体系，以及用于三层聚丙烯体系的底漆。这些产品的商业记录不断增长，证实了在生产和实验室测试中看到的出色结果。

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