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通过γ射线辐照前后AFG90和E51 2种环氧树脂性能变化对比分析,确定采用AFG90环氧树脂为基体,微米钨粉为填料,由模压法制备了钨/环氧树脂复合材料,并对材料的屏蔽性能和力学性能进行了测试,结果表明:模压法制备得到的复合材料的弯曲强度随钨含量的增加增大,在钨粉质量分数80%时达到最大值142.4 MPa,随后逐渐减小。钨粉添加质量分数最高可达90%,此时密度9.15 g/cm3,材料的屏蔽性能最佳,对60Co、137Cs辐照源的线性吸收系数分别可达0.50 cm-1和0.86 cm-1。
By comparing the changes of two kinds of epoxy resins AFG90 and E51 before and after γ-ray irradiation, it was determined that AFG90 epoxy resin matrix and micron tungsten powder were used as fillers. The tungsten / epoxy composites were prepared by molding method, The results show that the bending strength of composites prepared by molding increases with the increase of tungsten content, reaches the maximum of 142.4 MPa at 80% tungsten powder, and then decreases gradually. When the mass fraction of tungsten powder is up to 90%, the density is 9.15 g / cm3, and the shielding properties of the material are the best. The linear absorption coefficients of 60Co and 137Cs irradiated sources are up to 0.50 cm-1 and 0.86 cm-1, respectively.