Selvaraj V, Raghavarshini T R, Alagar M
Nanotech Research Lab, Department of Chemistry, University College of Engineering Villupuram (A Constituent College of Anna University, Chennai) Kakuppam Villupuram Tamil Nadu India
Polymer Engineering Laboratory, PSG Institute of Technology and Applied Research Neelambur Coimbatore-641 062 India.
RSC Adv. 2020 Feb 4;10(10):5656-5665. doi: 10.1039/c9ra08741a.
An attempt has been made in the present work to develop hybrid blended composites using epoxy resin (PETEP) derived from waste polyethylene terephthalate (PET) bottles and bio-phenolic (cardanol)-based benzoxazine (CBz) reinforced with functionalized bio-carbon (f-PJC) obtained from (PJ) for high performance applications. The molecular structure, thermal properties, thermo-mechanical behaviour, morphology, surface properties, and corrosion resistance of the composites were studied by different analytical methods, and the obtained results are reported. Dynamic mechanical properties such as the storage modulus (2.591 GPa), loss modulus (1.299 GPa) and cross-linking density (5.1 × 10 J mol K) were improved in the case of the 5 wt% f-PJC/PETEP-CBz composite compared to those of the PETEP-CBz blended matrix and the f-PJC/PETEP-CBz composites with other weight percentages. Among the studied bio-carbon-reinforced hybrid composites with different weight percentages, the 5 wt% f-PJC/PETEP-CBz composite shows a higher value of char yield (38.37%), with an enhanced glass transition temperature of 285 °C and an improved water contact angle of 111.3°. Results obtained from corrosion studies infer that these hybrid composites exhibit improved corrosion resistance behaviour and effectively protect the surface of mild steel specimens from corrosion. It is concluded that the present work can be considered as an effective method for utilizing waste products and sustainable bio-materials for the development of high performance value-added hybrid composites for thermal and corrosion protection applications.
在本研究中，尝试开发一种混合共混复合材料，该材料使用由废弃聚对苯二甲酸乙二酯（PET）瓶衍生的环氧树脂（PETEP）和以生物酚（腰果酚）为基础的苯并恶嗪（CBz），并用从（PJ）获得的功能化生物碳（f - PJC）增强，用于高性能应用。通过不同的分析方法研究了复合材料的分子结构、热性能、热机械行为、形态、表面性能和耐腐蚀性，并报告了所得结果。与PETEP - CBz共混基体和其他重量百分比的f - PJC / PETEP - CBz复合材料相比，5 wt% f - PJC / PETEP - CBz复合材料的动态力学性能，如储能模量（2.591 GPa）、损耗模量（1.299 GPa）和交联密度（5.1×10 J mol K）得到了改善。在研究的不同重量百分比的生物碳增强混合复合材料中，5 wt% f - PJC / PETEP - CBz复合材料显示出更高的残炭率（38.37%），玻璃化转变温度提高到285 °C，水接触角改善到111.3°。腐蚀研究结果表明，这些混合复合材料表现出改善的耐腐蚀行为，并能有效保护低碳钢试样表面免受腐蚀。得出的结论是，本研究可被视为一种有效利用废品和可持续生物材料来开发用于热防护和腐蚀防护应用的高性能增值混合复合材料的方法。
