【摘要】 <正> 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.更多还原

【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 110kGy. 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.更多还原