Adhesive bonding and miscellaneous chemical manufacture – Methods – Making electrical conductors of indefinite length
Patent
1986-06-03
1988-01-05
Simmons, David
Adhesive bonding and miscellaneous chemical manufacture
Methods
Making electrical conductors of indefinite length
29596, 29605, 335216, H02K 1504
Patent
active
047174374
ABSTRACT:
A film is disclosed which will accommodate high shear strain in a rigidly supported epoxy impregnated Nb.sub.3 Sn superconducting coil (SCC). In a generator application the SCC is subjected to a combined load due to differential thermal contraction, magnetic, and centrifugal forces. These strains could lead to coil fracture and resulting degradation of the field and current-carrying properties. A low modulus material at the interface between the SCC and support structure will reduce or distribute the shear strain to an acceptable level, i.e., no degradation in current carrying properties. Two film materials, polyethylene terephthalate Mylar (DuPont Chemical) and polycarbonate Makrofol KG (Mobay chemical) are disclosed as suitable damping or interface films. An adhesive such as the polyurethane Bostik 7070 is used for affixing the film to the winding surface.
REFERENCES:
patent: 3416111 (1968-12-01), Bogner
patent: 3662461 (1972-05-01), Lake et al.
patent: 3705372 (1972-12-01), Gotal et al.
patent: 3931108 (1976-01-01), Binsack
patent: 3991333 (1976-11-01), Laskaris
patent: 4037312 (1977-07-01), Deis
patent: 4038741 (1977-08-01), Schuler
patent: 4467303 (1984-08-01), Laskaris
Dimensional Behavior of Thin-Film Dielectric Polymers in the Temperature Range 4.2 to 300 K, Jelinek & Muller, 7/22/75 (1st Inter. Cyrogenic Mat'ls Conf.) Plenum Press, New York, pp. 312-315.
Non Metallic Materials and Composites at Low Temperatures, Muller, 1978, International Cyrogenic Materials Conference Board, pp. 339-363.
Blaugher Richard D.
Kolek Robert L.
Franz Bernard E.
Simmons David
Singer Donald J.
The United States of America as represented by the Secretary of
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