Deng Yajun, Bai Weibin, Zhang Xinmei, Chen Jipeng, Wang Shenji, Lin Jinhuo, Xu Yanlian
College of Material Science and Engineering, Fujian Normal University, Fuzhou 350007, PR China.
Fujian Key Laboratory of Polymer Materials, Fuzhou 350007, PR China.
ACS Omega. 2018 Apr 12;3(4):4129-4140. doi: 10.1021/acsomega.8b00050. eCollection 2018 Apr 30.
Environmentally friendly and renewable hybrid lacquer coatings with excellent aging resistant and anticorrosion properties were studied. The coatings were prepared using raw lacquer coupled with the silane agent 3-aminopropyltriethoxysilane or -(2-aminoethyl)-3-aminopropyltrimethoxysilane via an eco-friendly sol-gel preparation process. The physical-mechanical properties, thermal stability, aging resistance, and anticorrosion properties of the as-prepared coatings were analyzed. Additionally, the surface of the coatings before and after an accelerated aging treatment was studied by scanning electron microscopy and X-ray photoelectron spectroscopy. The results revealed that the hybrid lacquer coating A (with a raw lacquer-to-APTES mass ratio of 1.8:1) resulted in films with a significantly enhanced antiaging effect (e.g., six times higher than that of lacquer at a gloss loss rate of 30%). Besides, this film revealed an exceptional anticorrosion performance (with the lowest corrosion current = 2.476 × 10 A·cm) and a high protection efficiency (99.99 and 94.10%), as demonstrated by its electrochemical characteristics. Furthermore, all films exhibited a good barrier because of their dense structure, which prevents the corrosive medium from penetrating the coating during the salt spray test analysis after 1000 h. And the coating A relatively layered was distributing any significant cancaves, integrity better than all coatings studied, indicating that the based electrolyte was easier to penetrate it after salt spraying 2000 h.
研究了具有优异耐老化和防腐性能的环保型可再生混合漆涂层。通过环保的溶胶 - 凝胶制备工艺，使用生漆与硅烷试剂3 - 氨丙基三乙氧基硅烷或 -（2 - 氨乙基）-3 - 氨丙基三甲氧基硅烷制备涂层。分析了所制备涂层的物理机械性能、热稳定性、耐老化性能和防腐性能。此外，通过扫描电子显微镜和X射线光电子能谱研究了加速老化处理前后涂层的表面。结果表明，混合漆涂层A（生漆与APTES的质量比为1.8:1）制成的薄膜具有显著增强的抗老化效果（例如，在光泽损失率为30%时，比漆高六倍）。此外，该薄膜还表现出优异的防腐性能（最低腐蚀电流 = 2.476×10 A·cm）和高保护效率（99.99%和94.10%），其电化学特性证明了这一点。此外，由于其致密结构，所有薄膜都表现出良好的阻隔性，在1000小时后的盐雾试验分析中可防止腐蚀性介质穿透涂层。并且涂层A相对分层分布，没有明显凹坑，完整性优于所有研究的涂层，表明在盐雾喷涂2000小时后，基础电解质更容易渗透其中。
