摘要
基于扩散理论及辐射化学反应理论,建立真空紫外(VUV)辐照引起的聚合物材料质量损失数学模型。采用分离变量法与特征函数展开法,获得材料中挥发物质量随辐照剂量变化的函数关系式。通过实验得到聚酰亚胺(PI)薄膜和聚酯(PET)薄膜的质量损失数据,拟合求解模型中的参数,验证模型的适用性。实验结果表明,该质量损失模型适用于PI薄膜及PET薄膜,借助该模型可预估VUV辐照引起的材料的质量损失。
Based on diffusion theory and radiation chemical reaction theory,simulation of mass loss of polymer material induced by vacuum ultraviolet（ VUV） radiation is established. The mathematical formula between mass of the volatile in the material and radiation time is obtained by using the separated variable approach and the eigenfunction expansion method. Mass losses of the polyimide（ PI） film and polyethylene terephthalate（ PET） film are obtained through experiments and model＇s parameters are solved by using curve fitting,thus validating the applicability of the model.Results show that the model of mass loss is applicable to PI or PET films and can be used for predicting mass losses of polymer materials induced by VUV radiation.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2016年第2期229-234,共6页
Journal of Astronautics
基金
真空低温技术与物理重点实验室基金(9140C550205140C55003)
关键词
真空紫外辐照
聚合物材料
质量损失
扩散理论
Vacuum ultraviolet radiation
Polymer materials
Mass loss
Diffusion theory
