|
|
- 2015
γ辐照对玻璃布/环氧树脂层压板压缩性能的影响
|
Abstract:
玻璃纤维/环氧树脂复合材料具有高绝缘性和高力学性能, 常作为支撑材料用于高能物理和核物理试验, 但其力学性能在辐照环境中将发生变化。根据玻璃纤维/环氧树脂复合材料在新一代北京正负电子对撞机(BEPCII)中的应用要求, 研究了玻璃纤维/环氧树脂复合材料中的玻璃布/环氧树脂层压板γ辐照前后的压缩性能。研究表明:经20 kGy的γ辐照后, 玻璃布/环氧树脂层压板的压缩强度由辐照前的320.21 MPa下降为315.05 MPa, 下降了1.61%;经200 kGy的γ辐照后, 玻璃布/环氧树脂层压板的压缩强度下降为312.30 MPa, 下降了2.47%。利用扫描电镜对辐照前后的试件断口进行微观形貌观察, 发现辐照对玻璃布没有明显影响, 但使玻璃布与环氧树脂的结合度有所降低, 环氧树脂的碎片化趋于明显, 红外谱图显示环氧树脂在辐照后的降解反应强于交联反应。 Glass fiber/epoxy composites have high insulation and high mechanical properties. They are usually employed as the supporting materials in high energy physics and nuclear physics tests. But the mechanical properties will vary in irradiation environments. As one kind of glass fiber/epoxy composites, glass-cloth/epoxy laminated sheet is employed according to the application requirements of new generation Beijing Electron and Positron Collider (BEPCII). The compression properties of glass-cloth/epoxy laminated sheet before and after γ irradiation were studied. The result shows that the compression strength of glass-cloth/epoxy laminated sheet reduces to 315.05 MPa from 320.21 MPa after the γ irradiation of 20 kGy, declining by 1.61%. The compression strength of glass-cloth/epoxy laminated sheet reduces to 312.30 MPa after the γ irradiation of 200 kGy, declining by 2.47%. The fracture sections of the samples before and after irradiation were observed by SEM.The results show the glass-cloth does not change obviously and the binding degree of the glass-cloth and the epoxy declines after irradiation. The fragmentation of epoxy is more obvious. FTIR spectra indicates that the degradation reaction predominates over the crosslinking reaction of epoxy after irradiation. 北京高校青年英才计划(YETP0365); 中央高校基本科研业务费专项资金(FRF-TP-14-036A2); 中国科学院重大项目基金(KJ95T-03)
| [1] | Zheng L F, Ji Q, Wang L, et al. Irradiation effects on the shear property of supporting flange material of beam pipe in BES III[J]. Nuclear Electronics and Detection Technology, 2007, 27(2): 219-222 (in Chinese). 郑莉芳, 纪全, 王立, 等. 辐照对BES Ⅲ束流管支撑法兰材料断纹剪切性能影响的研究[J]. 核电子学与探测技术, 2007, 27(2): 219-222. |
| [2] | Zheng L F, Ji Q, Wu P, et al. Influence of irradiation on the tensile property of flange material of beam pipe in BES III based on SEM images[J]. Nuclear Electronics and Detection Technology, 2007, 27(5): 847-851 (in Chinese). 郑莉芳, 纪全, 吴平, 等. 基于SEM图像的BES Ⅲ束流管支撑法兰材料辐照拉伸性能研究[J]. 核电子学与探测技术, 2007, 27(5): 847-851. |
| [3] | Humer K, Tschegg E K, Platschka R, et al. Acoustic emission studies on irradiated plastic-copper interface in mode I at room temperature and 77K[J]. Advances in Cryogenic Engineering, 1996, 42: 51-56. |
| [4] | Fillunger H, Gerstenberg H, Humer K, et al. Irradiation and mechanical testing of ITER relevant magnet insulation[J]. Fusion Engineeringand Design, 2001, 58-59: 135-140. |
| [5] | Rosenkranz P, Humer K, Weber H W, et al. Irradiation effects on the fatigue behaviour of an ITER candidate magnet insulation material in tension and interlaminar shear[J]. Fusion Engineering and Design, 2001, 58-59: 289-293. |
| [6] | Bittner-Rohrhofer K, Humer K, Weber H W, et al. Mechanical performance of magnet insulation materials fabricated by "the insulate-wind-and-react" technique[J]. Fusion Engineering and Design, 2005, 75-79: 189-192. |
| [7] | Fiber-Reinforce Plastics Standardization Technical Committee of the National. GB/T 1446-2005 Fiber-reinforced plastics composites-The generals[S]. Beijing: Standard Press of China, 2005 (in Chinese). 全国纤维增强塑料标准化技术委员会.GB/T 1446-2005纤维增强塑料性能测试方法总则[S].北京: 中国标准出版社, 2005. |
| [8] | Fiber-Reinforce Plastics Standardization Technical Committee of the National. GB/T 1448-2005 Fiber-reinforced plastics composites-Determination of compressive properties[S]. Beijing: Standard Press of China, 2005 (in Chinese). 全国纤维增强塑料标准化技术委员会. GB/T 1448-2005纤维增强塑料压缩强度试验方法[S]. 北京: 中国标准出版社, 2005. |
| [9] | Zhou Z Y, Li X Y.Interchangeability and measurement technology[M]. Third Edition. Beijing: China Machine Press, 2011: 15-23 (in Chinese). 周兆元, 李翔英. 互换性与测量技术基础[M]. 3版. 北京: 机械工业出版社, 2011: 15-23. |
| [10] | Zhang L H, Zou M T, Chen D L.Mechanism of radiation crosslinking of polymers and its relationship with structural multiplicity[J]. Radiation Physics and Chemistry, 1993, 42(1): 125-128. |
| [11] | Shi J M, Wang Y S, Ge B, et al. Effects of γ-ray irradiation on carbon fiber surface graft modification[J]. Acta Materiae Compositae Sinica, 2012, 29(1): 43-48 (in Chinese). 石继梅, 王源升, 葛宝, 等. γ射线辐照对碳纤维表面接枝改性的影响[J]. 复合材料学报, 2012, 29(1): 43-48. |
