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Development of a poly(urethane-malonic-esteramide) coating from corn oil and carbon nanotubes for corrosion resistant applications
International Journal of Polymer Analysis and Characterization ( IF 1.9 ) Pub Date : 2021-01-06
Manawwer Alam, Naser M. Alandis, Javed Alam, Naushad Ahmad, Mohammad Asif Alam

Abstract

Poly(urethane-malonic-esteramide) (PUMEA), a novel resin synthesized from corn oil-based fatty amide, malonic acid, and isophorone diisocynate, was modified by introducing different amounts of multi-walled carbon nanotubes (MWCNTs) into the polymer matrix and cured at room temperature. The chemical structure and surface morphology were characterized by Fourier-transform infrared spectroscopy, nuclear magnetic resonance, and field emission scanning electron microscopy, and thermal analysis was carried out by thermogravimetric analysis and differential scanning calorimetry. The PUMEA/MWCNTs composites were coated on mild steel panel and cured at room temperature. Hydrophobicity and physico-mechanical properties of the coatings were extracted by measuring contact angle, scratch and pencil hardness, bending, cross-hatch adhesion, impact, and gloss. The corrosion resistance was proved measuring the potentiodynamic polarization and electrochemical impedance of a PUMEA-coated mild steel panel immersed in a 3.5 wt% NaCl solution for 40 days. Thermal studies revealed that the PUMEA coating can be safely used up to 250 °C.



中文翻译:

从玉米油和碳纳米管开发用于耐腐蚀应用的聚(氨基甲酸酯-丙二酸酯)涂层

摘要

通过将不同量的多壁碳纳米管(MWCNT)引入聚合物基体中,对由玉米油基脂肪酰胺,丙二酸和异佛尔酮二异氰酸酯合成的新型树脂聚(氨基甲酸酯-丙二酸酯)(PUMEA)进行了改性。并在室温下固化。通过傅里叶变换红外光谱,核磁共振和场发射扫描电子显微镜对化学结构和表面形貌进行表征,并通过热重分析和差示扫描量热法进行热分析。将PUMEA / MWCNTs复合材料涂覆在低碳钢板上并在室温下固化。通过测量接触角,划痕和铅笔硬度,弯曲度,划格法附着力,冲击力和光泽度来提取涂层的疏水性和物理机械性能。通过测量浸入3.5 wt%NaCl溶液中40天的PUMEA涂层软钢板的电位动力学极化和电化学阻抗,证明了其耐腐蚀性。热学研究表明,PUMEA涂层可在最高250°C的温度下安全使用。

更新日期:2021-01-06
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