Evaluation of inter-laminar shear strength of GFRP composed of bonded glass/polyimide tapes and cyanate-ester/epoxy blended resin for ITER TF coils

The insulation system of the ITER TF coils consists of multi-layer glass/polyimide tapes impregnated a cyanate-ester/epoxy resin. The ITER TF coils are required to withstand an irradiation of 10 MGy from gamma-ray and neutrons since the ITER TF coils is exposed by fast neutron (>0.1 MeV) of 1022...

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Bibliographic Details
Main Authors: Hemmi, T, Nishimura, A, Matsui, K, Koizumi, N, Nishijima, S, Shikama, T
Format: Conference Proceeding
Language:English
Subjects:
07 ISOTOPES AND RADIATION SOURCES
Bonding strength
Coiling
Coils
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Cyanates
Electrical equipment
Epoxy resins
ESTERS
EVALUATION
FAST NEUTRONS
FIBERGLASS
GAMMA RADIATION
Gamma rays
GLASS
Glass fiber reinforced plastics
HARDNESS
Insulation
IRRADIATION
ITER TOKAMAK
JRR-3M REACTOR
Mechanical properties
Multilayers
Nuclear reactors
Polymers
REINFORCED PLASTICS
SHEAR PROPERTIES
Shear strength
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Summary:The insulation system of the ITER TF coils consists of multi-layer glass/polyimide tapes impregnated a cyanate-ester/epoxy resin. The ITER TF coils are required to withstand an irradiation of 10 MGy from gamma-ray and neutrons since the ITER TF coils is exposed by fast neutron (>0.1 MeV) of 1022 n/m2 during the ITER operation. Cyanate-ester/epoxy blended resins and bonded glass/polyimide tapes are developed as insulation materials to realize the required radiation-hardness for the insulation of the ITER TF coils. To evaluate the radiation-hardness of the developed insulation materials, the inter-laminar shear strength (ILSS) of glass-fiber reinforced plastics (GFRP) fabricated using developed insulation materials is measured as one of most important mechanical properties before/after the irradiation in a fission reactor of JRR-3M. As a result, it is demonstrated that the GFRPs using the developed insulation materials have a sufficient performance to apply for the ITER TF coil insulation.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4860618