Radiation Resistant Epoxy for Resin Transfer Molding Fabrication of Cryogenic Electrical Insulation

Novel radiation-resistant glass fiber/epoxy composite for cryogenic insulation system

“…In some recent magnet structures, the resin systems for VPI process are usually based upon diglycidyl ether of bisphenol A (DGEBA) or diglycidyl ether of bisphenol F (DGEBF) cured by acid anhydride hardeners such as methyl tetrahydrophthalic anhydride (MTHPA). However, previous studies showed that with regards to epoxy systems, radiation tolerance increases with resin functionality, and aromatic amine curing agents are superior to anhydride systems [2,5]. Multi-functional epoxy resins with aromatic amine hardeners can withstand radiation doses of up to 200 MGy with only a 25% loss of strength.…”

“…In the past decades, extensive work has been done to investigate processing techniques of the insulation materials and the radiation effect on the mechanical properties of GFRP composites at cryogenic temperatures. Based on these studies [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], advanced epoxy based GFRPs with improved mechanical properties and radiation hardness were introduced into fusion technology, and certain chemical structure have been noted to result in enhanced radiation tolerance. In addition, vacuum press impregnation (VPI) are generally selected to fabricate insulation systems.…”

Study on thermal properties of radiation-resistant epoxy composite

“…As a consequence, it is necessary to investigate the effects of cryogenic temperature and irradiation on the properties of polymer matrix composites so that they can be used with confidence. Up to now, the effects of irradiation on the mechanical properties of various GFRPs have been investigated [7][8][9][10][11][12][13][14][15][16][17]. In addition to the mechanical properties, the thermal characteristics of the material should also be understood.…”