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对PAN/PEO凝胶(5%PAN,5%PEO)在1.0 MeV电子束下进行了不同剂量的辐照。红外光谱测量表明,PAN/PEO凝胶辐照后发生了化学交联。分析结果指出,PAN/PEO的凝胶分数随着辐照剂量的增加而不断增加;其凝胶分数增长率的变化可以分为3个阶段,即快速增加阶段(0~39kGy)、下降阶段(39~130 kGy)和稳定阶段(>130 kGy)。拟合发现,引入材料刚性参数β的半经验修正方程与未考虑材料刚性的Char1esby-Pinner方程相比,更符合实际测量值(对于该配比PAN/PEO,β为0.166)。交联度-辐照剂量曲线显示,交联度随辐照剂量的增加而增加,为设计新型能功能材料中所需的固定交联度的PAN/PEO凝胶提供了辐照剂量参考值。
Different doses of radiation were irradiated on the PAN / PEO gel (5% PAN, 5% PEO) under 1.0 MeV electron beam. Infrared spectroscopy measurements showed that the PAN / PEO gel chemically crosslinked after irradiation. The results showed that the gel fraction of PAN / PEO increased with the increase of irradiation dose. The change of gel fraction growth rate could be divided into three stages: rapid increase stage (0 ~ 39kGy), decrease stage ( 39 to 130 kGy) and stable phase (> 130 kGy). The fitting results show that the semi-empirical correction equation with the material stiffness parameter β is more in line with the actual measured value (β = 0.166 for the ratio PAN / PEO) than that of the Char-Besby-Pinner equation without considering the material stiffness. The cross-linking degree-irradiation dose curve shows that the degree of cross-linking increases with the increase of irradiation dose, which provides a radiation dose reference for designing PAN / PEO gel with a fixed degree of cross-linking required for novel functional materials.