电子束辐射对取向性聚醚醚酮性能的影响  

Effect of Electron-beam Radiation on Properties of Oriented Poly(ether-ether-ketone)

作　　者：丁仁浩 曹丹 许璐 王自强[1] 李建喜 马红娟[1] DING Renhao;CAO Dan;XU Lu;WANG Ziqiang;LI Jianxi;MA Hongjuan(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;CGN-DELTA(Taicang)Testing Technology Co.,Ltd.,Suzhou 215400,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中广核三角洲(太仓)检测技术有限公司,苏州215400 [3]中国科学院大学,北京100049

出　　处：《材料研究学报》2020年第11期822-828,共7页Chinese Journal of Materials Research

基　　金：国家自然科学基金(U1732151)。

摘　　要：在室温空气气氛中用电子束(EB)辐照拉伸取向后的聚醚醚酮(PEEK)片,研究了辐射对取向性PEEK片材性能的影响。采用X射线衍射(XRD)、热重分析(TGA)、差示扫描量热(DSC)和万能拉力机等手段测试了不同辐射吸收剂量对取向性PEEK片受力方向(平行方向)和垂直于受力方向(垂直方向)的结晶性能、热稳定性、力学性能和热收缩性能的影响。结果表明,在实验吸收剂量范围内,样品的结晶温度、熔融焓以及结晶度都随着吸收剂量的增加而减小;随着吸收剂量的增加样品的热稳定性降低;在空气气氛中辐照样品,其平行和垂直方向上的断裂伸长率、断裂应力均随吸收剂量的增加而减小;辐照后样品平行方向的热收缩率是垂直方向的2倍,在不同吸收剂量的条件下两方向的热收缩率都不变。The effect of electron-beam(EB)radiation on the properties of oriented PEEK sheets in air at room temperature were investigated herein.While the effect of different absorbed doses of EB on the crystallinity,thermal stability,mechanical properties and thermal shrinkage properties of PEEK sheets in the direction of stress(parallel direction)and perpendicular to the direction of stress(vertical direction)was assessed by means of X-ray diffractometer(XRD),thermogravimetric analysis(TGA),differential scanning calorimetry(DSC)and a universal tension machine.The results show that the crystallization temperature,melting enthalpy and crystallinity of the samples decreased with the increasing absorbed doses within the designed absorbed dose range.The thermal stability of the samples decreased with the increasing absorbed doses.The tensile stress and elongation at break in the parallel and vertical directions of the irradiated samples in air decreased with the increasing absorbed doses.The thermal shrinkage ratio of the samples after irradiation in the parallel direction was twice as high as that in the vertical direction,and was constant in these two directions under different absorbed doses.

关 键 词：有机高分子材料 聚醚醚酮 辐射老化 热稳定性 结晶行为 

分 类 号：TL13[核科学技术—核能科学]