PROPERTIES OF POLYMERS AFTER CRYOGENIC NEUTRON IRRADIATION.

D. S. Tucker; F. W. Clinard; G. F. Hurley; J. D. Fowler

doi:10.1016/0022-3115(85)90262-4

PROPERTIES OF POLYMERS AFTER CRYOGENIC NEUTRON IRRADIATION.

D. S. Tucker
, F. W. Clinard
, G. F. Hurley
, J. D. Fowler

Energy & Environmental Science & Technology

Research output: Contribution to conference › Paper › peer-review

2 Scopus citations

Abstract

Organic matrix insulation has been specified for use in fusion reactor superconducting coils due to lower material and fabrication costs compared to other forms of insulation. Glass fabric filled resins are prime candidates since they provide not only electrical insulation, but also the mechanical strength necessary to withstand the high magnetic forces present during coil operation. Two epoxy- and two polyimide-based fiber reinforced materials were irradiated to neutron fluences of 4. 1 multiplied by 10**2**1 n/m**2, E greater than 0. 1 MeV at 4. 2 K. Post-irradiation testing included flexural (3 pt. bend), as well as DC conductivity and dielectric breakdown strength. Measurements were made at 77 K and 300 K. Flexural strength was observed to decrease for the epoxy-based materials while the polyimide-based materials exhibited essentially no change in strength. Both DC conductivity and dielectric breakdown strength revealed little or no pattern of degradation at all levels of radiation exposure.

Original language	English
Pages	805-809
Number of pages	5
DOIs	https://doi.org/10.1016/0022-3115(85)90262-4
State	Published - 1985

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title = "PROPERTIES OF POLYMERS AFTER CRYOGENIC NEUTRON IRRADIATION.",

abstract = "Organic matrix insulation has been specified for use in fusion reactor superconducting coils due to lower material and fabrication costs compared to other forms of insulation. Glass fabric filled resins are prime candidates since they provide not only electrical insulation, but also the mechanical strength necessary to withstand the high magnetic forces present during coil operation. Two epoxy- and two polyimide-based fiber reinforced materials were irradiated to neutron fluences of 4. 1 multiplied by 10**2**1 n/m**2, E greater than 0. 1 MeV at 4. 2 K. Post-irradiation testing included flexural (3 pt. bend), as well as DC conductivity and dielectric breakdown strength. Measurements were made at 77 K and 300 K. Flexural strength was observed to decrease for the epoxy-based materials while the polyimide-based materials exhibited essentially no change in strength. Both DC conductivity and dielectric breakdown strength revealed little or no pattern of degradation at all levels of radiation exposure.",

author = "Tucker, \{D. S.\} and Clinard, \{F. W.\} and Hurley, \{G. F.\} and Fowler, \{J. D.\}",

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AU - Tucker, D. S.

AU - Clinard, F. W.

AU - Hurley, G. F.

AU - Fowler, J. D.

PY - 1985

Y1 - 1985

N2 - Organic matrix insulation has been specified for use in fusion reactor superconducting coils due to lower material and fabrication costs compared to other forms of insulation. Glass fabric filled resins are prime candidates since they provide not only electrical insulation, but also the mechanical strength necessary to withstand the high magnetic forces present during coil operation. Two epoxy- and two polyimide-based fiber reinforced materials were irradiated to neutron fluences of 4. 1 multiplied by 10**2**1 n/m**2, E greater than 0. 1 MeV at 4. 2 K. Post-irradiation testing included flexural (3 pt. bend), as well as DC conductivity and dielectric breakdown strength. Measurements were made at 77 K and 300 K. Flexural strength was observed to decrease for the epoxy-based materials while the polyimide-based materials exhibited essentially no change in strength. Both DC conductivity and dielectric breakdown strength revealed little or no pattern of degradation at all levels of radiation exposure.

AB - Organic matrix insulation has been specified for use in fusion reactor superconducting coils due to lower material and fabrication costs compared to other forms of insulation. Glass fabric filled resins are prime candidates since they provide not only electrical insulation, but also the mechanical strength necessary to withstand the high magnetic forces present during coil operation. Two epoxy- and two polyimide-based fiber reinforced materials were irradiated to neutron fluences of 4. 1 multiplied by 10**2**1 n/m**2, E greater than 0. 1 MeV at 4. 2 K. Post-irradiation testing included flexural (3 pt. bend), as well as DC conductivity and dielectric breakdown strength. Measurements were made at 77 K and 300 K. Flexural strength was observed to decrease for the epoxy-based materials while the polyimide-based materials exhibited essentially no change in strength. Both DC conductivity and dielectric breakdown strength revealed little or no pattern of degradation at all levels of radiation exposure.

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U2 - 10.1016/0022-3115(85)90262-4

DO - 10.1016/0022-3115(85)90262-4

M3 - Paper

AN - SCOPUS:0022279571

SP - 805

EP - 809

ER -

PROPERTIES OF POLYMERS AFTER CRYOGENIC NEUTRON IRRADIATION.

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