Hexahydro-s-triazine: A Trial for Acid-Degradable Epoxy Resins with High Performance
Hexahydro-s-triazine: A Trial for Acid-Degradable Epoxy Resins with High Performance
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六氢均三嗪：高性能酸降解环氧树脂的试验
DOI：
10.1021/acssuschemeng.7b00030
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发表时间：
2017-06-01
影响因子：
8.4
通讯作者：
Zhu, Jin
中科院分区：
文献类型：
--
作者：
You, Shusen;Ma, Songqi;Zhu, Jin
六氢均三嗪（HT）衍生物是酸敏感性化合物。合成了含三个氨基的4，4 '，4“-（1，3，5-六氢均三嗪-1，3，5-NH，三基）三（N-（2-氨乙基）苯甲酰胺）（HT-A）作为固化剂，制备了酸降解环氧树脂。HT -A及其前体的化学结构经~ 1H NMR和~（13）C NMR确证.合成的HT-A以及商业化的4，4 '-二氨基二苯基甲烷（DDM）（用作对照）分别用于固化双酚A的二缩水甘油醚（DGEBA）。通过动态力学分析（DMA）、差示扫描量热分析（DSC）、热重分析（TGA）和拉伸试验对HT-A固化环氧树脂的性能进行了测试，结果表明，HT-A固化环氧树脂具有与DDM固化环氧树脂相当的热性能和力学性能。同时，降解研究表明，HT-A固化环氧树脂在强酸条件下可发生可控降解.因此，HT-A在制备性能优良的可回收热固性材料方面具有很大的潜力.
Hexahydro-s-triazine (HT) derivatives are acid sensitive compounds. 4,4',4 ''-(1,3,5-Hexahydro-s-triazine-1,3,5-NH, triy1) tris(N-(2-aminoethyl) benzamide) (HT -A) bearing three amino groups was synthesized as a curing agent to prepare the acid -degradable epoxy resin. The chemical structures of HT -A and its precursor were confirmed by 'H NMR and C-13 NMR. The synthesized HT -A, as well as the commercialized 4,4'-diaminodiphenylmethane (DDM) (for use as the control) were used to cure diglycidyl ether of bisphenol A (DGEBA), respectively. The property examinations performed by dynamic mechanical analysis (DMA), differential scanning calorimeter (DSC), thermogravimetric analysis (TGA), and tensile test demonstrated that the HT -A -cured epoxy presented high thermal and mechanical properties which were comparable with those of the DDM cured one. Meanwhile, degradation investigation indicated that the HT -A -cured epoxy could be controllably degraded with strong acid stimuli. Thus, HT -A has a great potential to produce recyclable thermosets with satisfactory properties.