Abstract Epoxy resin of 9,9′-bis-(3,5-dibromo-4-hydroxyphenyl) anthrone-10 (EANBr, EEW 490) was synthesized and was characterized by IR and 1HNMR . EANBr and EPK3251 cured resin (EANBrC) were characterized by DSC and TGA at 10°Cmin−1 under nitrogen atmosphere. Broad DSC endothermic transitions of EANBr (265.3 °C) and EANBrC (291.4 °C) are due to some physical change and further confirmed by no weight loss in their TG thermograms. EANBr and EANBrC are thermally stable up to 340 °C and 310 °C, respectively. EANBr has followed single step degradation kinetics, while EANBrC has followed two step degradation kinetics. EANBr followed apparently zero order kinetics, while EANBrC followed apparently second order (1.80) and first order (0.89) degradation kinetics, respectively. Ea and A values of EANBrC (299.7 kJmol−1 and 6.32 × 1020 s−1) were found higher than that of EANBr (201 kJmol−1 and 2.45 × 1013 s−1) due to more rigid nature of EANBrC. The ΔS* value of the first step degradation of EANBrC (146.3 JK−1 mol−1) was found much more than that of EANBr (4.6 JK−1 mol−1). Jute – EANBr composite (J-EANBr) was prepared by compression molding technique at 120 °C for 5 h and under 20 Bar pressure. The observed tensile strength, flexural strength, electric strength and volume resistivity of J-EANBr are 24.7 MPa, 19.0 MPa, 1.8 kVmm−1 and 3.5 × 1012 ohm cm, respectively. Water absorption in J-EANBr was carried out at 30 ± 2 °C against distilled water, 10% NaCl, 10% HCl, 10% HNO3, 10% H2SO4, 10% NaOH, and 10% KOH and also in boiling water. The equilibrium time and equilibrium water content for J-EANBr in different environments are 384–432 h; 12.7–15.2%, respectively. The observed equilibrium water content and diffusivity trends of J-EANBr are KOH>H2SO4>HCl>NaOH>H2O>NaCl and H2O>NaCl>NaOH>H2SO4>HCl>KOH, respectively. Good thermo-mechanical, electrical properties and excellent hydrolytic stability of J-EANBr may be useful for high temperature applications in diverse fields.

中文翻译：

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9,9'-双-(3,5-二溴-4-羟基苯基)蒽酮-10环氧树脂及其黄麻复合材料的合成与表征

摘要 合成了9,9'-双-(3,5-二溴-4-羟基苯基)蒽酮-10环氧树脂(EANBr, EEW 490)，并对其进行了红外和1HNMR表征。EANBr 和 EPK3251 固化树脂 (EANBrC) 在氮气氛下通过 DSC 和 TGA 在 10°Cmin-1 下进行表征。EANBr (265.3 °C) 和 EANBrC (291.4 °C) 的宽 DSC 吸热转变是由于一些物理变化，并通过它们的 TG 热谱图中没有重量损失进一步证实。EANBr 和 EANBrC 的热稳定性分别高达 340 °C 和 310 °C。EANBr 遵循单步降解动力学，而 EANBrC 遵循两步降解动力学。EANBr 明显遵循零级动力学，而 EANBrC 分别遵循明显的二级 (1.80) 和一级 (0.89) 降解动力学。EANBrC 的 Ea 和 A 值（299.7 kJmol−1 和 6。由于 EANBrC 的刚性更强，发现 32 × 1020 s-1) 高于 EANBr（201 kJmol-1 和 2.45 × 1013 s-1）。发现 EANBrC (146.3 JK-1 mol-1) 第一步降解的 ΔS* 值远大于 EANBr (4.6 JK-1 mol-1)。黄麻 - EANBr 复合材料 (J-EANBr) 是通过压缩成型技术在 120°C 下 5 小时和 20 巴压力下制备的。观察到的 J-EAANBr 的拉伸强度、弯曲强度、电气强度和体积电阻率分别为 24.7 MPa、19.0 MPa、1.8 kVmm-1 和 3.5 × 1012 ohm cm。J-EAANBr 中的吸水在 30 ± 2 °C 下对蒸馏水、10% NaCl、10% HCl、10% HNO3、10% H2SO4、10% NaOH 和 10% KOH 以及沸水进行。J-EAANBr在不同环境下的平衡时间和平衡水含量为384-432 h；分别为 12.7–15.2%。观察到的 J-EAANBr 的平衡含水量和扩散趋势分别为 KOH>H2SO4>HCl>NaOH>H2O>NaCl 和 H2O>NaCl>NaOH>H2SO4>HCl>KOH。J-EANBr 良好的热机械、电性能和优异的水解稳定性可用于不同领域的高温应用。