Sterligov Grigorii K, Rzhevskiy Sergey A, Isaeva Dilshodakhon K, Belov Nikita M, Rasskazova Maria A, Drokin Egor A, Topchiy Maxim A, Minaeva Lidiya I, Babkin Alexander V, Erdni-Goryaev Erdni M, Kepman Alexey V, Asachenko Andrey F
A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia.
Faculty of Chemistry, National Research University Higher School of Economics, 101100 Moscow, Russia.
Polymers (Basel). 2022 Oct 21;14(20):4456. doi: 10.3390/polym14204456.
"Green" thermally stable hardener was synthesized from a PET waste. The rigid molecular linear structure of the new hardener suggests that it will provide the polymer matrix with the necessary physical and mechanical characteristics. It also allows the expectation that cured matrix based on this hardener can provide increased toughness. New hardener was used as a curing agent for three epoxy resins-tetraglycidyl methylenedianiline (TGDMA, 111-117 EEW), diglycidylether of bisphenol A (DGEBA, 170-192 EEW) and solid epoxy resin (SER)-with a medium molecular weight (860-930 EEW) based on DGEBA. The mixtures were found to have the highest T for the DGEBA resin, and high of that for TGDMA and SER. According to the DMA analysis for two cured matrices, the hardener proved to be no worse than the standard ones, and made it possible to obtain cured matrices with excellent mechanical properties, which allows us to hope for further application of new hardener cured epoxy matrices in appropriate composite materials at high temperatures.
由聚对苯二甲酸乙二酯废料合成了“绿色”热稳定固化剂。这种新型固化剂的刚性分子线性结构表明，它将为聚合物基体提供必要的物理和机械特性。这也让人预期，基于这种固化剂的固化基体能够提高韧性。新型固化剂被用作三种环氧树脂的固化剂，这三种环氧树脂分别是四缩水甘油基亚甲基二苯胺（TGDMA，环氧当量111 - 117）、双酚A二缩水甘油醚（DGEBA，环氧当量170 - 192）和基于DGEBA的中等分子量（环氧当量860 - 930）的固体环氧树脂（SER）。结果发现，对于DGEBA树脂，这些混合物具有最高的玻璃化转变温度，对于TGDMA和SER则具有较高的玻璃化转变温度。根据对两种固化基体的动态热机械分析，这种固化剂被证明不逊色于标准固化剂，并且能够获得具有优异机械性能的固化基体，这使我们有望在高温下将新型固化剂固化的环氧基体进一步应用于合适的复合材料中。
