• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Cathodic disbondment resistance with reactive ethylene terpolymer blends and composite coatings.
【24h】

Cathodic disbondment resistance with reactive ethylene terpolymer blends and composite coatings.

机译：具有反应性乙烯三元共聚物共混物和复合涂料的耐阴极剥离性。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The cathodic disbondment (CD) of organic coatings is a continual problem in applications of cathodically protected steel in civil infrastructure and petrochemical production and transportation. Multiple researchers have proposed that the degree of disbondment is a function of factors such as service temperature, coating thickness and applied cathodic potential. While the mechanism by which disbondment occurs has received a fair amount of attention, efforts to develop new material coating systems to resist the disbondment of organic coatings on cathodically protected metal substrates has been lacking. The objective of this dissertation is to develop a new coating system to protect metal substrates under cathodic protection, such as buried pipelines. Pipeline coatings must be tough, durable, resistant to chemical and moisture diffusion, and maintain adhesion in wet environments. A reactive ethylene terpolymer (RET) was compound blended with standard high-density polyethylene (HDPE) as a potential coating material for steel. The HDPE component provides toughness and high chemical and moisture resistance, while the RET component provides high polarity and reactivity, which enhance adhesion to steel substrates. Micro- and nanocomposite approaches were taken to incorporate multi-walled carbon nanotubes (MWCNTs) to provide increased cohesive strength while inorganic particles (clay, talc, and zinc) micro-scale fillers and organically-modified nanoclays were explored to reduce diffusion pathways through the polymer coatings. The cathodic disbondment performance of the various blend and composite coatings are presented and analytical models developed to predict long-term durability of the coatings in corrosive environments.
机译：在有机基础设施中的阴极保护钢在石化生产和运输中的应用中，有机涂层的阴极剥离（CD）是一个持续存在的问题。多个研究人员提出，脱粘程度是诸如使用温度，涂层厚度和施加的阴极电势等因素的函数。尽管发生剥离的机理已引起广泛关注，但仍缺乏开发新材料涂层体系以抵抗阴极保护的金属基材上有机涂层剥离的努力。本文的目的是开发一种新的涂层系统，以保护在阴极保护下的金属基材，例如埋地管道。管道涂料必须坚韧，耐用，抗化学和水分扩散，并在潮湿环境中保持附着力。将反应性乙烯三元共聚物（RET）与标准高密度聚乙烯（HDPE）混合，作为钢的潜在涂层材料。 HDPE组分具有韧性，并具有很高的耐化学性和耐湿性，而RET组分则具有高极性和反应性，从而增强了与钢质基材的粘合性。采取了微米和纳米复合材料的方法来结合多壁碳纳米管（MWCNT），以提供更高的内聚强度，同时探索了无机颗粒（粘土，滑石和锌）微型填料和有机改性的纳米粘土，以减少通过碳纳米管的扩散途径。聚合物涂料。介绍了各种共混和复合涂料的阴极剥离性能，并开发了分析模型来预测涂料在腐蚀性环境中的长期耐久性。

著录项

  • 作者

    Love, Corey T.;

  • 作者单位

    University of California, San Diego.$bMaterials Sci and Engineering.;

  • 授予单位 University of California, San Diego.$bMaterials Sci and Engineering.;
  • 学科 Engineering Materials Science.
  • 学位 Ph.D.
  • 年度 2008
  • 页码 422 p.
  • 总页数 422
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号