论文部分内容阅读
本文用同步法合成了丁腈羟聚氨酯/聚环氧树脂(PU/PE)体系的互穿网络高聚物(IPN),研究了各种因素对其形态和玻璃化转变行为的影响,并用扭辫及扭摆(TPA)在-100℃—+150℃温度区间内,测试全部试样的动态力学谱。结果表明,PU/PE是不相容体系,在电镜片上呈现细胞状结构(400—800A)。由于两组份网络互穿,发生“强迫互容”,使T_g内移,通过调整组份比和加不同扩链剂等能提高阻尼值,加宽T_g转变区。
In this paper, the interpenetrating network polymer (IPN) of NBR / polyepoxy resin (PU / PE) was synthesized by the synchronous method. The effects of various factors on the morphology and glass transition behavior were studied. Braid and twist (TPA) Dynamic mechanical spectra of all specimens were tested in the temperature range of -100 ° C to + 150 ° C. The results show that PU / PE is an incompatible system, showing cell-like structure on the lens (400-800A). Due to the intercommunication between the two component networks, “forced mutual tolerance” occurs and the T_g shift inwards. The damping ratio can be increased by adjusting the component ratios and adding different chain extenders and the T_g transition zone can be widened.