中华医学超声杂志

应用化学 ›› 1989, Vol. 0 ›› Issue (3): 75-77.

• 研究简报 • 上一篇    下一篇

氯磺化聚乙烯的γ-辐射交联

李树忠, 何忠达, 杨金荣, 张杰   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1988-06-18 修回日期:1988-10-07 出版日期:1989-06-10 发布日期:1989-06-10

γ-IRRADIATION ON THE CHLOROSULFONATED POLYETHYLENE

Li Shuzhong, He Zhongda, Yang Jinrong, Zhang Jie   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1988-06-18 Revised:1988-10-07 Published:1989-06-10 Online:1989-06-10

PDF

428

被引次数

7 | 2

摘要： 氯磺化聚乙烯(简称CSM)由于存在SO2Cl基团很容易通过金属氧化物进行化学交联,但至今未见其辐射交联的详细报道.本文探讨氯含量对CSM辐射交联的影响. 所用CSM系吉林化工公司产品:20型(含氯量29～33%,下同),40型(33～37%)和30型(40～45%).将CSM和防老D按一定比例混炼均匀,再在140℃左右热压成形.试样用3.33×1015Bg 60Co于室温限量空气下进行辐照.辐照过的试样于80℃处理2小时以消除俘陷自由基.在氮气保护下先后用二甲苯和无水乙醇,加热回流48小时和8小时,测定凝胶含量.

关键词: 氯磺化聚乙烯, 辐射交联, 红外光谱, 物理性能

Abstract: The effect of radiation dose on the gel content of chlorosulfonated polyethylene (CSM)has been investigated. The results indicated that with the same radiation dose the more thechlorine content in CSM, the easier was the CSM to be crosslinked. IR spectra study showedthe importance of CCl group in CSM in radiation crosslinking.The presence of the antioxidants depressed the oxidation of CSM during irradiation. Thetensile strength. and the elongation of the polymer increased with increasing radiation dosewhen the latter was low. A maximum value of the tensile strength appeared at about 110 kGy. It is also found that γ-irradiation in dose of 60-300 kGy showed no effect on theglass transition temperature and dielectric property of CSM.

Key words: Chlorosulfonated polyethylene, Radiation crosslinking, IR spectra, Physical propeity

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