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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Prokopec, R. Humer, K. Maix, R.K. Fillunger, H. Weber, H.W. Knaster, J. |
| Copyright Year | 2002 |
| Abstract | The insulation of the ITER TF coils consists of multiple wrapped layers of glass fiber polyimide sandwich tapes. In order to simplify the fabrication process, the polyimide tape can be bonded to the glass fiber tape, mainly to avoid misalignments of the polyimide tape. However, due to the intense neutron and γ-radiation exposure, bonding agents have to be radiation resistant, otherwise the composite will be severely damaged, as was observed for the ITER TF model coil insulation. Two bonded glass fiber polyimide tapes (40 mm wide, ~0.175 mm thick) were supplied by Arisawa, Japan, and Advanced Composites Group, United Kingdom. Test materials were fabricated based on the build-up of the ITER TF turn insulation and vacuum pressure impregnated with a 40:60 cyanate ester/epoxy blend supplied by Huntsman, Switzerland. The mechanical properties of these materials were characterized prior to and after reactor irradiation to a fast neutron fluence of 2 × 1022 m-2 (E >; 0.1 MeV), i.e. twice the ITER design fluence. Static and dynamic tensile tests were carried out at RT and 77 K. The Arisawa tape showed excellent mechanical properties. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 7700604 |
| Ending Page | 7700604 |
| Page Count | 1 |
| File Size | 433344 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 22 |
| Issue Number | 3 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Radiation effects Polyimides Glass Bonding Insulation Neutrons reactor irradiation Bonded glass polyimide tape mechanical properties |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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