Rosin‐modified o‐cresol novolac epoxy resin (AEOCN) was synthesized by condensation of rosin acid with o‐cresol formaldehyde novolac resin (AOCN). The AEOCN resin was further epoxidized using epichlorohydrin and sodium hydroxide. Rosin‐based imidoamine curing agents (IAMDK, IASDK, and IAEDK) were also prepared by reacting dimaleopimaryl ketone (DMPK), a dimerized rosin product with aromatic diamines. The chemical structures of all synthesized products were confirmed by FTIR, ¹H‐NMR, ¹³C‐NMR, and DEPT‐135° spectroscopic techniques. The curing process of rosin‐modified epoxy cured with imidoamine crosslinkers was studied using differential scanning calorimetry (DSC) and the results were compared to o‐cresol novolac epoxy resin (EOCN) and some previously reported commercial‐based systems. The thermal and mechanical properties of the cured epoxy thermosets were determined using a thermogravimetric analyzer (TGA) and a universal testing machine (UTM), respectively. The chemical resistance analysis was carried out by immersing cured epoxy coated panels in 1M NaOH, 1MHCl, and 1M NaCl solutions. The results were evaluated in terms of % weight loss method and the morphological changes that appeared due to chemical exposure were also investigated via scanning electron microscopy (SEM). This study presents the economical synthetic approach towards high‐performance bio‐based epoxy coating materials impending to replace some of the petrochemical compounds in coating industries.

中文翻译：

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含松香亚胺胺固化剂的松香改性邻甲酚酚醛清漆环氧热固性树脂的热机械性能

松香改性的邻甲酚酚醛清漆环氧树脂（AEOCN）是通过将松香酸与邻甲酚甲醛酚醛清漆树脂（AOCN）缩合而合成的。使用表氯醇和氢氧化钠将AEOCN树脂进一步环氧化。松香基亚胺胺固化剂（IAMDK，IASDK和IAEDK）也通过使二马来松香基酮（DMPK）（一种二聚松香产物）与芳族二胺反应制得。FTIR，¹ H-NMR，¹³证实了所有合成产物的化学结构C‐NMR和DEPT‐135°光谱技术。使用差示扫描量热法（DSC）研究了使用亚胺基交联剂固化的松香改性环氧树脂的固化过程，并将结果与​​邻甲酚酚醛清漆环氧树脂（EOCN）和一些先前报道的商用体系进行了比较。分别使用热重分析仪（TGA）和通用测试机（UTM）确定固化的环氧树脂热固性塑料的热性能和机械性能。通过将固化的环氧涂层板浸入1M NaOH，1MHCl和1M NaCl溶液中进行耐化学性分析。用％重量损失法评价结果，并且还通过扫描电子显微镜（SEM）研究了由于化学暴露而出现的形态变化。