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One-pot synthesis of epoxy resin composite: thermal, rheological and Monte Carlo investigations
Iranian Polymer Journal ( IF 3.1 ) Pub Date : 2023-12-27 , DOI: 10.1007/s13726-023-01259-5
Naoual El-Aouni , Omar Dagdag , Rajesh Haldhar , Seong-Cheol Kim , Mouna Azogagh , Avni Berisha , El-Sayed M. Sherif , Rachid Hsissou , Abderrahim Elbachiri , Eno E. Ebenso , Mohamed Rafik

This paper describes the design and synthesis of a new epoxy resin, bisphenol A tetraglycidyl dipropoxy dianiline ether (TGEDADPBA), and its application as an organic matrix in developing new composite materials. 1H along with 13C nuclear magnetic resonance as well as Fourier transform infrared spectroscopy (ATR-FTIR) utilizing attenuated total reflection were used to determine the structure of the TGEDADPBA epoxide. In two stages, the epoxy resin was produced with a high yield: aniline, as well as diglycidyl ether of bisphenol A (DGEBA), were reacted, and the resultant product was then condensed with epichlorohydrin in the presence of triethylamine. Various properties of the synthesized epoxy resin and its composites were investigated using different analytical techniques. The thermal stability, morphology, rheology, and viscosity of TGEDADPBA epoxy resins and their composites were investigated using ATG, SEM, RHM01-RD HAAKE rheometer, and Ubbelohde VB-1423 capillary viscometer, respectively. Thermogravimetric analysis findings indicate that the various composites TGEDADPBA/MDA/ZnO made with varying ZnO mass fractions (0, 1, 5, and 10%) and including methylene dianiline (MDA) as hardener along with zinc oxide (ZnO) as filler exhibit improved thermal characteristics as the zinc oxide content rises. Rheological evaluations show that the storage modulus (G′) and the loss modulus (G″) of all the composites formed increase with the amount of zinc oxide added as reinforcement. In addition, photographs of the various composites studied show excellent dispersion of the zinc oxide filler. Furthermore, the thermal conductivity of the prepared TGEDADPBA/MDA/ZnO composites was simulated using Monte Carlo (MC) modeling. The findings demonstrate that ZnO considerably raises the composites’ thermal conductivity, while this thermal conductivity rises in proportion to the weight percentage of ZnO.

Graphical abstract



中文翻译:

环氧树脂复合材料的一锅法合成:热学、流变学和蒙特卡罗研究

本文介绍了新型环氧树脂双酚A四缩水甘油基二丙氧基二苯胺醚(TGEDADPBA)的设计和合成,及其作为有机基体在开发新型复合材料中的应用。使用1 H 和13 C 核磁共振以及利用衰减全反射的傅里叶变换红外光谱 (ATR-FTIR) 来确定 TGEDADPBA 环氧化物的结构。通过两个阶段,高产率地生产了环氧树脂:苯胺以及双酚A二缩水甘油醚(DGEBA)发生反应,然后所得产物在三乙胺存在下与环氧氯丙烷缩合。使用不同的分析技术研究了合成的环氧树脂及其复合材料的各种性能。分别使用 ATG、SEM、RHM01-RD HAAKE 流变仪和 Ubbelohde VB-1423 毛细管粘度计研究了 TGEDADPBA 环氧树脂及其复合材料的热稳定性、形貌、流变性和粘度。热重分析结果表明,采用不同 ZnO 质量分数(0%、1%、5% 和 10%)制成的各种复合材料 TGEDADPBA/MDA/ZnO,并包含亚甲基二苯胺 (MDA) 作为硬化剂以及氧化锌 (ZnO) 作为填料,表现出改进的性能热特性随着氧化锌含量的增加而变化。流变学评估表明,所有形成的复合材料的储能模量(G')和损耗模量(G'')随着作为增强体的氧化锌的添加量而增加。此外,所研究的各种复合材料的照片显示氧化锌填料具有优异的分散性。此外,使用蒙特卡罗(MC)模型模拟​​了所制备的TGEDADPBA/MDA/ZnO复合材料的热导率。研究结果表明,ZnO 显着提高了复合材料的热导率,而这种热导率随 ZnO 重量百分比的增加而增加。

图形概要

更新日期:2023-12-27
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