化学学报 ›› 1979, Vol. 37 ›› Issue (1): 30-45. 上一篇    下一篇

论文

三氟氯乙烯与乙烯辐射共聚合的研究

刘钰铭1, 汤国强2, 王维国2, 吴超3   

  1. 1. 上海化工研究院;
    2. 上海合成橡胶研究所;
    3. 上海曙光化工厂
  • 投稿日期:1978-06-30 发布日期:2013-06-03

A STUDY OF THE RADIATION-INDUCED COPOLYMERIZATION OF CHLOROTRIFLUOROETHYLENE AND ETHYLENE

LIU YU-MING1, TANG KUO-CHIAN2, WANG WIE-GOU2, WU CHAO3   

  1. 1. Institute of Shanghai Chemical Engineering;
    2. Shanghai Institute of Synthetic Rubber;
    3. Shanghai Su-Guang Chemical Works
  • Received:1978-06-30 Published:2013-06-03

本文报导利用60Coγ射线引发以三氟三氯乙烷为溶剂的三氟氯乙烯与乙烯溶液共聚合的研究.聚合有诱导期(小于40伦/秒时)而无后效应.平均聚合速率比本体辐射聚合快一倍以上.聚合初速率与辐照强度成0.5次方关系,DPPH完全抑制聚合反应,聚合按自由基机制进行.聚合总活化能为3.5千卡/克分子.求得单体竞聚率γOTFE·E=0.025,γE·CTFE=0.20,所得共聚物为交替共聚物.共聚物熔点随单体配比中三氟氯乙烯含量的增加而增加,随聚合温度的升高而降低,而与辐照强度和溶剂比关系不大.聚合率(P%)与辐照强度(I)、除去诱导期的辐照时间(t)和溶剂FC-113比例(φ)的关系近似地由下式表示:P%=10(-1.28·t1.23·I1.12·φ-0.508熔融指数(M.I.)与辐照温度(T)和溶剂FC-113比例(φ)的关系近似地由下式表示:M.I.=1.586·10-4·φ3.3·T1.78(克/10分).

The 60Co-induced copolymerization of chlorotritluoroethylene (CTFE) and ethylene (E) in triHuorotrichloroethane (FC-113) as a solvent waq studied.The oopolymerization process gives an induction period at <40 Roentgens/sec., with no post-irradiation effeotobserved.As compared with bulk copolymerization, its average oopolymerization rate is more than doubled.