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Processing characteristic and radiation resistance of various epoxy insulation materials for superconducting magnets |
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| Authors: | Zhixiong Wu Jingwen Li Chuanjun Huang Rongjin Huang Laifeng Li |
| Affiliation: | 1. Key Laboratory of Cryogenics, TIPC, CAS, Beijing 100190, PR China;2. State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China;3. University of Chinese Academy of Sciences, Beijing 100049, PR China |
| Abstract: | Glass fiber reinforced epoxy-based composites were developed as insulating materials for fusion superconducting magnets. The processing properties of various epoxy matrices were investigated in terms of the isothermal viscosity at 45 °C. The interlaminar shear strength (ILSS) at 77 K and the thermal expansion coefficient (CTE) of the composites were assessed before and after gamma irradiation at ambient temperature up to 10 MGy. It is found that the TGPAP-based systems showed lower initial viscosities, longer working life and higher radiation resistance compared to the DGEBF-based systems with the same modifier. Furthermore, there was no significant effect of the irradiation dose on the CTE of the composites. |
| Keywords: | Polymer-matrix composites Radiation resistance Rheological properties Mechanical properties Thermal properties |
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