双酚A基双邻苯二甲腈聚合物的制备及性能,High Performance Polymers

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双酚A基双邻苯二甲腈聚合物的制备及性能
High Performance Polymers ( IF 1.8 ) Pub Date : 2013-07-05 , DOI: 10.1177/0954008313493645
Zhiran Chen ₁ , Xulin Yang ₁ , Mingzhen Xu ₁ , Xiaobo Liu ₁

Affiliation

2,2-双[4-(3,4)-二氰基苯氧基苯基]丙烷（双邻苯二甲腈；BAPh）的腈基可以通过亲核酚基进行固化。双酚A（BPA）可与4-硝基邻苯二甲腈反应合成BAPh。因此，BPA 被用作一种新型固化剂与 BAPh 反应。BAPh/BPA 预聚物和聚合物通过热聚合制备。使用差示扫描量热法、动态流变分析和热重分析表征固化行为。结果表明，BPA 可以降低 BAPh 的熔融温度，缩短 BAPh 的固化时间，较低的固化温度为 243°C，并将 BAPh 的加工窗口扩大至 95-120°C。同时，在 240°C 下固化 10 小时后，BAPh/BPA 聚合物在氮气气氛下可承受高达 443°C 的温度，在空气中可承受高达 420°C 的温度。研究了 BAPh/BPA 聚合物的机械性能，其弯曲强度为 75 至 122 MPa。动态力学分析用于评估 BAPh/BPA 聚合物的动态力学性能。聚合物的玻璃化转变温度范围为 244 至 299°C，加热并固化至 240°C。在此，BAPh/BPA 聚合物可以成为高性能聚合物材料的良好候选树脂。

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Preparation and properties of bisphenol A-based bisphthalonitrile polymers

The nitrile groups of 2,2-bis [4-(3,4)-dicyanophenoxy phenyl] propane (bisphthalonitrile; BAPh) can be cured by the nucleophilic phenol groups. Bisphenol A (BPA) can react with 4-nitrophathalonitrile to synthesize BAPh. Therefore, BPA was used as a novel curing agent to react with BAPh. The BAPh/BPA prepolymers and polymers were prepared by heat polymerization. The curing behaviors were characterized using differential scanning calorimetry, dynamic rheological analysis, and thermogravimetric analysis. The results indicate that BPA can decrease the melting temperature of BAPh, shorten the curing time of BAPh with lower curing temperature at 243°C, and widen the processing windows of BAPh to 95–120°C. Meanwhile, BAPh/BPA polymers could withstand temperatures up to 443°C under nitrogen atmosphere and 420°C in air when cured at 240°C for 10 h. The mechanical properties of BAPh/BPA polymers were investigated, and it exhibits a flexural strength of 75 to 122 MPa. Dynamic mechanical analysis was used to evaluate the dynamic mechanical properties of BAPh/BPA polymers. The polymers show glass transition temperature ranging from 244 to 299°C heating and cured to 240°C. Herein, the BAPh/BPA polymers can be a good candidate resin for high-performance polymeric materials.

更新日期：2013-07-05

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