摘要
采用两种催化体系制备了聚四甲基苯撑硅氧烷－二苯基硅氧烷（ＰＴＭＰＳ－ＤＰＳ）共聚物。用凝胶色谱分析、广角 Ｘ光衍射分析、示差扫描量热分析（ＧＰＣ、 ＷＡＸＤ、 ＤＳＣ）等方法研究了 ６０Ｃo γ射线辐照对 ＰＴＭＰＳ－ＤＰＳ共聚物形态结构及力学性能的影响。结果表明，经过 ８．５ｘ１０５Ｇｙ大剂量辐照后， ＰＴＭＰＳ－ＤＰＳ共聚物的平均分子量、结晶度、拉伸强度及断裂伸长率等变化不大。使用非平衡催化体系可以进一步提高ＰＴＭＰＳ—ＤＰＳ共聚物的耐辐照性能。
Poly(Tetramethyl-p-Silphenylene-Diphenylsiloxane) (PTMPS-DPS)copoly- mer was synthesized by two different catalysts. The effect of 6oCo r irradiation on morphological structure and mechanical properties of PTMPS-DPS copolymer was investigated by using of GPC, WAXD, DSC, et al. The result showed that molecular weight, crystallinity, tensile strength and elongation at break were not changed very much by irradiation with dose of 8.5 x 105Gy. The copolymer by means of the nonequilibrium catalysis system has a better irradiation stability.
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
北大核心
2000年第4期241-245,共5页
Journal of Radiation Research and Radiation Processing
基金
上海市应用基础基金!(915814037)
关键词
聚硅氧烷
Γ射线辐照
形态结构
力学性能
钴60
Organosiloxane polymer, 6oCo γ ray irradiation, Morphological structure, Mechanical properties
