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首页> 外文期刊>Journal of Applied Polymer Science >Novolac epoxy resin from 4,4-dihydroxybenzophenone: Thermal, thermomechanical, interfacial, and cure kinetics with DGEBA/DICY blend
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Novolac epoxy resin from 4,4-dihydroxybenzophenone: Thermal, thermomechanical, interfacial, and cure kinetics with DGEBA/DICY blend

机译：来自4,4-二羟基苯苯甲酮的酚醛清漆环氧树脂：热，热机械，界面和固化动力学，具有DGEBA / dety Blend

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摘要

A novolac epoxy resin based on 4,4-dihydroxybenzophenone (BZPNE) was synthesized via epoxidation of 4,4-dihydroxybenzophenone novolac resin (BZPN). BZPN was obtained by strong mineral acid catalyzed reaction of 4,4-dihydroxybenzophenone (BZP) and paraformaldehyde. The formation of BZPNE and BZPN was confirmed by Fourier transform infrared spectroscopy, proton and carbon nuclear magnetic resonance spectroscopy, gel permeation chromatography, and epoxy equivalent weight. Different blends of BZPNE with diglycidyl ether of bisphenol-A (DGEBA; EEW approximate to 180) were cured using dicyandiamide were characterized by thermogravimetric analysis, thermomechanical analysis, dynamic mechanical analysis, and interfacial property between aluminum adherends at ambient and elevated temperature. Thermal properties were found to improve on increasing quantity of BZPNE in DGEBA as it is evidenced from glass transition temperature (T-g). Likewise, no deterioration in interfacial properties was observed with the highest quantity of BZPNE (30%) in DGEBA blend, when tested at 150 degrees C. Cure kinetics of compositions were studied by nonisothermal differential scanning calorimetry and Kissinger method was used to compute the kinetic parameters such as frequency factor (A), activation energy (E-a) followed by the dependency of rate constant (k) on temperature of different blends. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46164.
机译：基于4,4-二羟基苯甲酮（BZPNE）甲酚醛清漆环氧树脂通过4,4-二羟基酚醛清漆树脂（BZPN）的环氧化合成。 BZPN由4,4-二羟基苯甲酮（BZP）和多聚甲醛的强无机酸催化反应而获得。 BZPNE和BZPN的形成通过傅立叶确认变换红外光谱，质子和碳核磁共振光谱，凝胶渗透色谱法，和环氧当量。 （DGEBA; EEW近似于180）与双酚A的二缩水甘油醚BZPNE的不同共混物通过热重分析，热分析，动态力学分析，并在环境和升高的温度下铝被粘物之间的界面特性使用双氰胺均治愈了表征。热性能被发现改善对DGEBA增加BZPNE的量，因为它是从玻璃化转变温度（T-G）证实。同样地，在界面性质没有恶化用BZPNE（30％）的在DGEBA共混物中的量最高观察到，当在组合物的150℃固化动力学测试通过研究非等温差示扫描量和用于计算动力学基辛格方法参数，如频率因子（A），活化能（Ea），接着在不同的共混物的温度的速率常数（k）的依赖性。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018年，135，46164。

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