Low Viscosity Organic Insulation Systems For Improved Processing and Reduced Radiation Induced Gas Evolution

191 Low Viscosity Organic Insulation Systems For Improved Processing and Reduced Radiation Induced Gas Evolution--Eltron Research, Inc., 5660 Airport Boulevard, Boulder, CO 80301-2340; 303-440-8008 Dr. James B. Schutz, Principal Investigator Ms. Eileen E. Sammells, Business Official DOE Grant No. DE-FG03-97ER82366 Amount: $74,994 Advanced magnetic fusion energy experiments will require large superconducting magnets. These in turn will require the development of advanced electrical insulation materials capable of reliable performance at cryogenic temperatures under intense radiation conditions. As part of the insulation systems, low viscosity organic impregnating resins with a long working life are required to withstand the extremely harsh operating environment. Historically, radiation tolerant resins have not been amenable to impregnation processing. Recent research has identified several new materials which offer the potential for a reduction in radiation induced gas evolution, combined with improved impregnation processing characteristics. This project is aimed towards the development of novel low viscosity impregnating resins that have improved processing characteristics and reduced radiation resistance. In Phase I a systematic study of the processing characteristics of these epoxy resin formulations, as well as characterization of mechanical and physical properties, and optimization of resin formulations and cure schedules will be completed. A radiation test methodology and radiation test samples will be prepared. The Phase II program will include characterization of radiation induced gas evolution, and degradation of mechanical and physical properties of these systems. Commercial Applications and Other Benefits The program would result in the development of low viscosity epoxy insulation systems which combine favorable processing characteristics with improved radiation tolerance. Immediate applications include electrical insulation for cryogenic magnet systems, particularly those which would be subjected to irradiation, such as the International Thermonuclear Experimental Reactor. The development of high performance epoxy matrix formulations with improved processing characteristics would also be of interest for commercial, industrial, and aerospace composite applications.