Thermal Conductivity of High-Strength Polyethylene Fiber and Applications for Cryogenic Use
Joint Authors
Takao, Tomoaki
Yamanaka, Atsuhiko
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-10-05
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The local temperature rise of the tape is one of instabilities of the conduction-cooled high temperature superconducting (HTS) coils.
To prevent the HTS tape from locally raising a temperature, high thermal conductive fiber reinforced plastic was applied to coil bobbin or spacer for heat drain from HTS tape.
The thermal conductivity of ramie fibers increases by increasing orientation of molecular chains with drawing in water, and decreases by chain scission with γ-rays irradiation or by bridge points in molecular chains with vapor-phase-formaldehyde treatments.
Thermal conductivity of high strength ultra-high-molecular-weight (UHMW) polyethylene (PE) fiber increases lineally in proportion to tensile modulus and decreases by molecular chain scissions with γ-rays irradiation.
This result suggested the contribution of the long extended molecular chains due to high molecular weight on the high thermal conductivity of high strength UHMW PE fiber.
Thermal conductivity of high strength UHMW PE fiber reinforced plastics in parallel to fiber direction is proportional to the cross sectional ratio of reinforcement oriented in the conduction direction.
Heat drain effect of high strength UHMW PE fiber reinforced plastic from HTS tape is higher than that of glass fiber reinforced plastic (GFRP) and lower than that of aluminum nitride (AlN).
In the case of HTS coil, the thermal stability wound on coil bobbin made of high strength UHMW PE fiber reinforced plastic is good as that of AlN, and better than that of GFRP.
American Psychological Association (APA)
Yamanaka, Atsuhiko& Takao, Tomoaki. 2011. Thermal Conductivity of High-Strength Polyethylene Fiber and Applications for Cryogenic Use. ISRN Materials Science،Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-493110
Modern Language Association (MLA)
Yamanaka, Atsuhiko& Takao, Tomoaki. Thermal Conductivity of High-Strength Polyethylene Fiber and Applications for Cryogenic Use. ISRN Materials Science No. 2011 (2011), pp.1-10.
https://search.emarefa.net/detail/BIM-493110
American Medical Association (AMA)
Yamanaka, Atsuhiko& Takao, Tomoaki. Thermal Conductivity of High-Strength Polyethylene Fiber and Applications for Cryogenic Use. ISRN Materials Science. 2011. Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-493110
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-493110