Effect of gamma irradiation on the mechanical behavior, thermal properties and structure of epoxy/glass-fiber composite
Effect of gamma irradiation on the mechanical behavior, thermal properties and structure of epoxy/glass-fiber composite
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DOI：
10.1016/j.jnucmat.2013.05.041
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发表时间：
2013-10
影响因子：
3.1
通讯作者：
Zuheng Wu;Juanjuan Li;Chun-Hua Huang;Rong Huang;Laifeng Li
中科院分区：
文献类型：
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作者：
Zuheng Wu;Juanjuan Li;Chun-Hua Huang;Rong Huang;Laifeng Li
研究了γ射线辐照对玻璃纤维增强环氧树脂复合材料力学性能、热性能和结构的影响。在77 K的层间剪切强度（ILSS）和复合材料的断裂形态作为辐射剂量的函数进行了评价。采用紫外-可见光谱（UV-Vis）、傅里叶变换红外光谱（FTIR）、差示扫描量热法（DSC）和热重分析仪（TGA）对环氧树脂基体的分子结构和热稳定性进行了研究。结果表明，在77 K时，ILSS在5 MGy以下几乎不受影响，但在10 MGy照射后显著下降。树脂的热性能随辐照剂量的增加而下降。这些结果可以通过环氧树脂基体的交联和降解来解释。该复合材料似乎对5.0 MGy的剂量具有耐受性。
Effect of gamma irradiation on the mechanical, thermal properties and structure of glass fiber reinforced epoxy composites was investigated. The interlaminar shear strength (ILSS) at 77 K and the fracture morphology of the composites were evaluated as a function of radiation dose. In addition, the molecular structure and the thermal stability of epoxy matrix were investigated by means of UV–Vis spectra, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermogravimetric analyzer (TGA). It is found that the ILSS at 77 K was affected scarcely up to 5 MGy but decreased significantly after 10 MGy irradiation. The thermal properties of the resin decreased with the increasing irradiation dose. These results can be interpreted by the crosslinking and degradation of the epoxy matrix. The composite appears to be resistant to a dose of 5.0 MGy.