Advertisement

Materials pp 255-259 | Cite as

A Radiation-Resistant Epoxy Resin System for Toroidal Field and Other Superconducting Coil Fabrication

  • N. A. Munshi
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 38)

Abstract

A liquid-epoxy resin system with high resistance to 4-K reactor radiation (neutron plus gamma) has been developed that meets all ITER and BPX requirements: pot life longer than 12 h at ambient temperatures; viscosity less than 1000 cP over its entire pot life; cure below 150°C; low shrinkage; no volatiles upon curing; excellent penetration; and good wetting of fibers, stainless steels, and nickel-based steels.

The strength of the epoxy resin system, CTD-101, was tested with and without S-2 Glass®* fiber reinforcement at 295, 76 and 4 K. Specimens were then irradiated at two dose levels (2.9 × 107 and 1.6 × 108 Gy) at temperatures below 6 K.

Virtually no deterioration in interlaminar shear strength at 76 K was observed after the lower dose level, which is the end-of-life dose level for ITER. After the higher dose level, the material had degraded, but its strength was still well above the BPX requirement (14 MPa in shear) at the end-of-life dose level of 1 × 108 Gy.

Keywords

Dose Level High Dose Level Resin System Epoxy Resin System Total Radiation Dose 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Insulators for Fusion Applications, IAEA-TECDOC-417. International Atomic Energy Agency, Vienna (1987).Google Scholar
  2. 2.
    M. B. Kasen and N. A. Munshi, Cost-Effective Techniques for Development of Radiation-Resistant Organic Insulators for Superconducting Magnets, SBIR Contract No. DE-ACO2–87ER80487 (1987).Google Scholar
  3. 3.
    N. A. Munshi, Effect of Polymer Additives and Residual Elements on the Cryogenic Performance and Radiation Resistance of Insulators for High-Field Magnets, SBIR Contract No. DE-FG02–90ER81073 (1990).Google Scholar
  4. 4.
    M. B. Kasen and N. A. Munshi, Cost-Effective Techniques for Development of Radiation-Resistant Organic Insulators for Superconducting Magnets, SBIR Contract No. DE-ACO2–87ER80487, Final Report (1991).Google Scholar
  5. S. N. A. Munshi and H. W. Weber, Reactor neutron and gamma irradiation of various composite materials, Advances in Cryogenic Engineering - Materials, vol. 38,R. P. Reed and F. R. Fickett, eds., Plenum, New York, submitted for publication.Google Scholar
  6. 6.
    H. Gerstenberg and W. Gläser, Neutron irradiations at temperatures below 6 K at the Munich Research Reactor (FRM), Fakultät für Physik E21, Technische Universität München, Garching, FRG (1990).Google Scholar
  7. 7.
    L. T. Summers (Lawrence Livermore National Laboratory), ITER design allowables, paper presented at Radiation Tolerant Magnet Insulation Workshop, Boulder, Colorado, June 1990.Google Scholar

Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • N. A. Munshi
    • 1
  1. 1.Composite Technology Development, Inc.BoulderUSA

Personalised recommendations