...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>JCT coatingstech >Novel Acrylic Epoxy Hybrid System Design for Metal Protection Application
【24h】

Novel Acrylic Epoxy Hybrid System Design for Metal Protection Application

机译：金属保护应用的新型丙烯酸环氧混合体系设计

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

A process for producing a novel acrylic epoxy hybrid (AEH) is demonstrated in which a small molecule epoxy diffuses from its "monomer" droplets through the aqueous phase and into an acrylic dispersion particle. The obtained hybrid can be formulated as a viscosity-stable 2K coating system by mixing pigments and fillers with waterborne polyamine hardener as Part A and the acrylic epoxy hybrid as Part B. The 2K coating formulation stability is controlled by the hybrid and hardener surface charge reflected in zeta potential values. When the zeta potentials of the hybrid and hardener were in the range at broken vertical bar zeta (AEH) + zeta (hardener)vertical bar < 30, the 2K coating formulation showed instability and a tendency to form gel. The 2K coating system performance relies heavily on hardener choice for metal protection properties such as salt spray corrosion resistance. It was found that water solubility of hardener is negatively correlated to salt spray resistance (SSR). With an appropriately low water solubility hydrophobic hardener, the 2K coating system can achieve 600 hr SSR, which is much better than a 1K acrylic and 2K acrylic/liquid epoxy resin (LER) system and similar or slightly worse than a conventional 2K waterborne epoxy system. Furthermore, the 2K coating system dries faster than a traditional 2K WB epoxy system but has much longer pot life. In addition, its application properties, such as dilution stability, are also excellent due to the better stability of the acrylic latex polymers.
机译：证明了一种生产新型丙烯酸环氧杂化物（AEH）的方法，其中小分子环氧树脂从其“单体”液滴中扩散穿过水相并扩散到丙烯酸分散体颗粒中。通过将颜料和填料与水性聚胺硬化剂（A部分）和丙烯酸环氧混合剂（B部分）混合，可以将所得混合料配制成粘度稳定的2K涂料体系。2K涂料配方的稳定性受混合料和固化剂表面电荷的反射率控制在zeta电位值中。当杂化剂和硬化剂的ζ电势在垂直竖线ζ（AEH）+竖线（硬化剂）竖线<30的范围内时，2K涂料配方显示出不稳定性和形成凝胶的趋势。 2K涂层系统的性能在很大程度上取决于硬化剂的选择，以实现金属保护性能，例如耐盐雾腐蚀。发现硬化剂的水溶性与耐盐雾性（SSR）负相关。借助适当低水溶性的疏水性固化剂，2K涂料体系可以达到600小时的SSR，这比1K丙烯酸和2K丙烯酸/液体环氧树脂（LER）体系要好得多，并且与常规2K水性环氧体系相似或稍差。此外，2K涂层系统的干燥速度比传统的2K WB环氧系统快，但适用期更长。另外，由于丙烯酸胶乳聚合物的更好的稳定性，它的应用性能，例如稀释稳定性，也是极好的。

著录项

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