高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (1): 105.

• 论文 • 上一篇    下一篇

丁腈羟聚氨酯/聚环氧树脂互穿网络高聚物的研究

李玉玮1, 栗宜明1, 张丽梅1, 杨红1, 方远1, 张东华2, 金恕2   

  1. 1. 吉林大学化学系;
    2. 中国科学院长春应用化学研究所
  • 收稿日期:1982-05-24 出版日期:1984-02-24 发布日期:1984-02-24

THE INVESTIGATION ON POLYURETHANE/POLYEPOXIDE INTERPENETRATING POLYMER NETWORKS

Li Yuwei1, Li Yiming1, Zhang Limei1, Yang Hong1, Fang Yuan1, Zhang Donghua2, Jin Shu2   

  1. 1. Department of Chemistry, Jilin University, Changchun;
    2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun
  • Received:1982-05-24 Online:1984-02-24 Published:1984-02-24

摘要: 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—800Å)。由于两组份网络互穿,发生“强迫互容”,使Tg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Tg转变区。

Abstract: In this paper,the synthesis of interpenetrating polymer networks(IPN) based on polyurethane (hydroxy terminated eopolymer of butadiene-acrylonitrile crossliked with 2, 4-tolylene diisocyanate) and polyepoxide (crossliked with DMP-30)by simultaneous method and the influence of various factors on their morphology and glass transition behavior were reported. The curing condition of testing specimen was selected with the aid of JSRtype curelastometer . The morphology and glass transition of the tested material were studied by transmission electron microscopy (TEM) and dynamic mechanical spectroscopy (DMS) techniques respectively and the thermostability and mechanical behavior of the sample were investigated as well. The results show that PU/PEbelongs to inconsistent system. In all the cases, a two-phase morphology emerged and the celluar structure with the cell sizes ranging from 400 Å to 800 Å was found. The damping value is increased and the zone of Tg transition is broadened by adjusting the constituent ratio and adding various chain extender.

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