聚偏氟乙烯的辐射效应及其温度影响  

THE RADIATION EFFECTS OF POLYVINYLIDENE FLUORIDE AND ITS TEMPERATURE DEPENDENCE

作　　者：钟晓光[1] 于黎[1] 赵文伟[1] 张月芳[1] 孙家珍[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《辐射研究与辐射工艺学报》1993年第4期198-202,共5页Journal of Radiation Research and Radiation Processing

摘　　要：利用XPS、红外光谱、凝胶含量测试及辐照失重等方法,研究了聚偏氟乙烯(PVDF)的辐射效应及其温度的影响。结果表明,在低剂量范围内,提高辐照温度,明显地有利于辐射交联反应。在高温下,PVDF中不饱和双键的形成主要是通过交联或支化结构的进一步脱HF反应实现。而室温条件下,含氟自由基脱HF形成稳定的共轭多烯,也是导致双键形成的重要原因。In this work by using XPS. infrared spectrometer, the measurementof gel content and radiation induced weight loss, the radiation effects and its tempe-rature dependence of polyvinylidene fluoride (PVDF) were studied. The obtained re-sults show that in low dose range the increase in radiation temperature favors radia-tion croeslinking reaction of the polymer. Under high temperature, the unsaturatedstructure in PVDF are mainly formed through the further dehygrofluorination ofcrosslinking and/or branching structures, whereas under the low temperature the de-hygrofluorination of fluoro-carbon radicals to form more stable polyene radicals isresponsible for the observed CF structure in C-ls spectra and double bonds shown in IR spectra.

关 键 词：聚偏氟乙烯 辐射交联 温度相关 

分 类 号：O631.34[理学—高分子化学]