PROPERTY CHANGES OF CYANATE ESTER/EPOXY INSULATION SYSTEMS CAUSED BY AN ITER-LIKE DOUBLE IMPREGNATION AND BY REACTOR IRRADIATION

Journal Article · Thu Apr 08 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3402292· OSTI ID:21371737

Prokopec, R; Humer, K; Fillunger, H; Maix, R K; Weber, H W ^[1]

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1. 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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1219; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANNULAR SPACE
BARYONS
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
COMPOSITE MATERIALS
CONFIGURATION
CURING
DESIGN
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELEMENTARY PARTICLES
EPOXIDES
EQUIPMENT
FAST NEUTRONS
FERMIONS
FIBERS
HADRONS
IMPREGNATION
IRRADIATION
ITER TOKAMAK
LAYERS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
MATERIALS
MECHANICAL PROPERTIES
NEUTRON FLUENCE
NEUTRONS
NUCLEONS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL RADIATION EFFECTS
POLYMERS
RADIATION EFFECTS
REINFORCED MATERIALS
RESINS
SHEAR PROPERTIES
SPACE
SUPERCONDUCTING COILS
THERMAL INSULATION
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS
TOROIDAL CONFIGURATION