PROPERTY CHANGES OF CYANATE ESTER/EPOXY INSULATION SYSTEMS CAUSED BY AN ITER-LIKE DOUBLE IMPREGNATION AND BY REACTOR IRRADIATION
- Atominstitut, Vienna University of Technology, 1020 Wien (Austria)
Because of the double pancake design of the ITER TF coils the insulation will be applied in several steps. As a consequence, the conductor insulation as well as the pancake insulation will undergo multiple heat cycles in addition to the initial curing cycle. In particular the properties of the organic resin may be influenced, since its heat resistance is limited. Two identical types of sample consisting of wrapped R-glass/Kapton layers and vacuum impregnated with a cyanate ester/epoxy blend were prepared. The build-up of the reinforcement was identical for both insulation systems; however, one system was fabricated in two steps. In the first step only one half of the reinforcing layers was impregnated and cured. Afterwards the remaining layers were wrapped onto the already cured system, before the resulting system was impregnated and cured again. The mechanical properties were characterized prior to and after irradiation to fast neutron fluences of 1 and 2x10{sup 22} m{sup -2}(E>0.1 MeV) in tension and interlaminar shear at 77 K. In order to simulate the pulsed operation of ITER, tension-tension fatigue measurements were performed in the load controlled mode. The results do not show any evidence for reduced mechanical strength caused by the additional heat cycle.
- OSTI ID:
- 21371737
- Journal Information:
- AIP Conference Proceedings, Vol. 1219, Issue 1; Conference: International cryogenic materials conference (ICMC) on advances in cryogenic engineering materials, Tucson, AZ (United States), 28 Jun - 2 Jul 2009; Other Information: DOI: 10.1063/1.3402292; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
COMPOSITE MATERIALS
CURING
DESIGN
EPOXIDES
FAST NEUTRONS
FIBERS
IMPREGNATION
IRRADIATION
ITER TOKAMAK
LAYERS
MAGNETIC FIELDS
NEUTRON FLUENCE
PHYSICAL RADIATION EFFECTS
REINFORCED MATERIALS
RESINS
SHEAR PROPERTIES
SUPERCONDUCTING COILS
THERMAL INSULATION
TOROIDAL CONFIGURATION
ANNULAR SPACE
BARYONS
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
CONFIGURATION
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
HADRONS
MAGNETIC FIELD CONFIGURATIONS
MATERIALS
MECHANICAL PROPERTIES
NEUTRONS
NUCLEONS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RADIATION EFFECTS
SPACE
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS