This research endeavor is aimed at developing a protective coating for marine service conditions of the southeastern coastal area of the China–Pakistan Economic Corridor. Bisphenol A-type epoxy-based protective coatings were prepared by impregnating exotic titanium metal microparticles into two different proportions, i.e., 5% and 10% (). Film hardness measurement by pencil test, adhesion measurement by the crosshatch-tape test, chemical and heat resistance test, gloss measurement, natural exposure, and salt spray testing have demonstrated that Ti-enriched coatings have performed better than the virgin epoxy coating. Moreover, scanning electron microscopy has depicted more surface degradation. Fourier transform infrared spectroscopy has indicated higher mass loss and chain scission in the virgin epoxy coating than the Ti-enriched coatings. In addition, these Ti microparticles have filled up the cavities/imperfections, reduced cracking, promoted crosslinking during the curing, and cordoned-off passage of corrodents and moisture, thus improving epoxy resin coating features. These results have widened the scope of Ti-embedded epoxy coatings against atmospheric corrosion for highly corrosive marine sites.

中文翻译：

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中巴经济走廊东南沿海地区天然海洋环境中钛浸渍双酚A型环氧双相涂层体系的耐腐蚀性协同评价

本研究旨在为中巴经济走廊东南沿海地区的海洋服务条件开发防护涂层。双酚A型环氧基保护涂层是通过浸渍稀有金属钛微粒成两种不同的比例，即5%和10%（）。铅笔测试的薄膜硬度测量、划格胶带测试的附着力测量、耐化学性和耐热性测试、光泽度测量、自然暴露和盐雾测试表明，富钛涂层的性能优于原始环氧涂层。此外，扫描电子显微镜已经描述了更多的表面降解。傅里叶变换红外光谱表明，与富钛涂层相比，原始环氧树脂涂层的质量损失和断链更高。此外，这些钛微粒填充了空腔/缺陷，减少了开裂，促进了固化过程中的交联，并封锁了腐蚀剂和水分的通过，从而改善了环氧树脂涂层的特性。