含酰胺的邻苯二甲腈模型化合物的合成与性能表征

Synthesis and Characterization of Amide-Containing Phthalonitrile Model Compound

以2,2-二(3-氨基-4-羟基苯基)丙烷为原料,通过亲核和缩合反应成功合成了一种含酰胺的邻苯二甲腈模型化合物(ACNPA),并用氢谱(1H-NMR)和红外光谱(FT-IR)表征了其结构;流变测试发现,该模型化合物在未加固化剂的条件下,在240℃、260℃、280℃均可交联固化,而且随着固化温度的提高,固化所需的时间变短;热重分析(TGA)的测试数据表明,与未固化模型化合物的残炭率41.46%相比,240℃、260℃、280℃固化后产物的残炭率分别提高到了54.21%、61.33%和60.66%。

Amide-containing phthalonitrile model compounds（ACNPA） were successfully synthesized from 2,2-bis （3-amino-4-hydroxyphenyl） propane via nuceophilic displacement and condensation reaction. The structure of ACNPA was confirmed by nuclear magnetic resonance （^1 H-NMR） and Fourier transform infrared spectra （FT-IR）. Rheology analysis performed on ACNPA reveals that the model compound can be cured at 240 ℃ , 260 ℃ , 280 ℃ without curing additive. With the curing temperature increasing, the shorter the required curing time becomes. Thermogravimetric analysis （TGA） was used to study the thermal properties of uncured and cured compound. The results show that compared with the char yield （41.46 %, at 800 ℃ ） of the uncured model compound, the char yield of cured products at 240 ℃ , 260 ℃ 280℃ is 54.21%, 61.33 % and 60.66 %, respectively