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首页> 外文期刊>Journal of Applied Polymer Science >Corrosion Protection of Epoxy-Coated Steel Using Different Silane Coupling Agents
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Corrosion Protection of Epoxy-Coated Steel Using Different Silane Coupling Agents

机译：不同硅烷偶联剂对环氧涂层钢的腐蚀防护

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摘要

To suppress steel corrosion at elevated temperature and in humid condi-tion silane coupling agents N-#beta#-aminoethyl aminopropyltrimethoxysilane (AAPS),#gamma#-glycidoxypropyltrimethoxysilane (GPS), and bis[3-(trimethoxysilyl)-1-phenylpro-pyl]tetrasulfide (RC-2) were introduced as promers into an epoxy/steel system.Silane coupling agents and epoxy were coated onto the steel surface using the solution casting method.The polymer degradation and steel corrosion formation after heat and humid treatment were investigated by Fourier transform infrared reflection and absorption spectroscopy (FTIR-RAS) and scanning electron microscopy (SEM).Compared to various silane treated epoxy/steel systems,the AAPS-treated epoxy/stee; (AAPS/epoxy =6:4) system suppressed steel corrosion at 400degC for 10 min in air and for 5 days at 60degC in 100% relative humidity.This is due to the formation of Si-O-Si linkage and Fe-O-Si bond on steel surface,which are resistant to water diffusion and thermally stable at elevated temperature.The relationship between chemical bonding at the steel-epoxy interface and corrosion protection on the steel surface was also investigated.
机译：为了抑制高温和潮湿条件下的钢腐蚀，硅烷偶联剂N-＃β＃-氨基乙基氨基丙基三甲氧基硅烷（AAPS），＃γ＃-环氧丙氧基丙基三甲氧基硅烷（GPS）和双[3-（三甲氧基甲硅烷基）-1-苯基丙氧基引入四苯基]四硫化物（RC-2）到环氧/钢体系中。采用溶液流延法将硅烷偶联剂和环氧涂料涂覆在钢表面上。研究了湿热处理后聚合物降解和钢腐蚀的形成通过傅里叶变换红外反射和吸收光谱（FTIR-RAS）和扫描电子显微镜（SEM）。与各种硅烷处理的环氧/钢体系相比，AAPS处理的环氧/三通; （AAPS /环氧树脂= 6：4）系统在100％相对湿度下于400°C的空气中抑制了10分钟的腐蚀，而在60°C的温度下抑制了5天的腐蚀，这是由于形成了Si-O-Si键和Fe-O-钢表面上的Si键具有良好的抗水扩散性和高温稳定性。还研究了钢-环氧界面的化学键与钢表面腐蚀保护之间的关系。

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