| 王建,冀璞光,于晓燕,张庆新.化学通报,2018,81(5):466-471. |
| 双氨基邻苯二甲腈/环氧树脂固化物的制备及性能研究 |
| Preparation and Properties of Diamino-phthalonitrile/Epoxy Resin System |
| 投稿时间：2017-12-25 修订日期：2018-01-24 |
| DOI： |
| 中文关键词: 自催化 邻苯二甲腈 环氧树脂 热稳定 |
| 英文关键词:self-promoted, phthalonitrile, epoxy, thermal property |
| 基金项目:国家自然科学基金项目（51573037）、河北省自然科学基金（B2017202281, E2014202033）、长江学者和创新团队发展计划（IRT_17R33） |
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| 中文摘要: |
| 本文合成出了一种双氨基邻苯二甲腈单体（DPN），采用红外和核磁共振表征了DPN及其中间体—含双氨基的酚类单体（DHTM）的分子结构，利用差示扫描量热证明了DPN的自催化性能及其对环氧树脂（EP）的固化作用。将DHTM与DPN分别与EP制得共混体系，然后将其固化。将制得的两种固化物分别进行了热失重和动态热机械性能测试，发现DPN-EP固化物的各项性能都要优于DHTM-EP固化物。其在氮气和空气下的初始分解温度（T5%）分别提高了27和68°C，计算得到的极限氧指数提高了9.12，达到36.36，其玻璃化温度提高了42°C，展现出了良好的耐热和阻燃性能。 |
| 英文摘要: |
| A kind of diamino-phthalonitrile (DPN) monomer was successfully synthesized. The chemical structures of DPN and intermediate (DHTM) of a phenol that contain two amino groups were confirmed by spectroscopic tecniques. Differential scanning calorimetry was utilized to demonstrate the autocatalytic performance of DPN and its curing effect on EP. Blends of DHTM and DPN with EP were obtained, respectively. The thermal stabilitis and dynamic mechanical properties of cured resins were studied by thermo-gravimetric and dynamic mechanical analysis. The results show that all properties of DPN-EP cured resin are superior to DHTM-EP cured resin. For the former, the temperatures of 5% weight loss are 357 and 369°C under nitrogen and air, respectively. Glass temperature is 202°C, and the limiting oxygen indexe is 36.36 calculate by Van Krevelen equation. The DPN-EP cured resin will be a great candidate as a matrix for high-performance polymeric material. |
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