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Enhanced irradiation crosslinking of Nylon-1010
Author(s): LI Zhihong, WANG Junlin, ZHANG Lihua, CHEN Xinfang
Pages: 257-
260
Year: 2007
Issue:
5
Journal: JOURNAL OF RADIATION RESEARCH AND RADIATION PROCESSING
Keyword: 辐射交联; 增强交联; 尼龙-1010; 结晶损伤;
Abstract: 用凝胶测定技术及广角X射线衍射(Wide angle X-ray diffraction,WAXD)等方法研究了尼龙-1010与添加了交联剂4,4'-双马来酰亚胺二苯甲烷(4,4'-Bismaleimideodephenylmathan,BMI)的尼龙-1010的辐射交联规律,试样的交联G值,结晶结构随吸收剂量的变化,讨论了交联剂存在下辐照对结晶损伤的影响.结果表明,多官能团单体的存在,不仅增强了辐射交联结构的生成,同时也促进了其结晶结构的辐射损伤,损伤的初始剂量减小.BMI单体主要存在于界面区,抑制应力键裂解、加强了界面交联,进一步导致结晶表面缺陷的积累和结晶度Wc下降,表明辐射损伤由晶面开始而逐步向结晶内部伸入.结晶度Wc、微晶尺寸Lhkl与剂量D关系表明,辐照初期W1c及Lhkl的增加与应力链断裂、氢键作用下分子链段重排有关,高吸收剂量的Wc与Lhkl的变化率与结晶比表面大小相关,010面较100面更易受损伤.
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