Radar transparent rigid polyurethane laminate systems for radome

Details Radar transparent rigid polyurethane laminate systems for radome Radar transparent rigid polyurethane laminate systems for radome

1980-10-03

1982-10-12

Page, Thurman K.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563074, 1563314, 361218, 427379, 4273898, 428290, 4284256, B32B 3112

Patent

active

043537693

ABSTRACT:
A polyurethane-quartz laminate suitable for aircraft radomes. Controlled amounts of a mixture of unpolymerized 4,4 diphenyl methane diisocyanate (MDI) and 2,4 toluene diisocyanate (TDI) are polymerized with ethylene glycol at a preselected temperatures and periods to produce a polymeric resin of relatively few nonpolar isocyanate groups. The resin is impregnated and cured in layers of quartz cloth to form a relatively high strength composite or laminate having a low dielectric constant.

REFERENCES:
patent: 3616185 (1971-10-01), Goldberg
patent: 3619338 (1971-11-01), Gilman et al.
patent: 3878036 (1975-04-01), Chang
patent: 4098943 (1978-07-01), Degginger et al.
patent: 4153594 (1979-05-01), Wilson, Jr.

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