Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1989-06-19
1990-05-08
Foelak, Morton
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156245, 1563315, 1563318, 264 53, 264 71, 264129, 428290, 4283144, 4283179, 4283191, 521 54, 521 91, 521122, 521123, 521184, 521185, 521189, 523218, 523219, B32B 518, B32B 3114
Patent
active
049235389
ABSTRACT:
A method of making thermal insulating products comprising porous, lightweight, high temperature resistant inorganic particles in a polyimide foam matrix and the product thereof. A polyimide precursor powdered is mixed with about equal weight of flake-like porous inorganic particles to substantially uniformly coat the particles with powder. The mixture is placed in a mold and compressed slightly. The assembly is heated to the foaming temperature of the polyimide precursor for a period suitable to produce uniform foaming. Then the temperature is raised to the curing and crosslinking temperature of the precursor for a time period sufficient to produce complete cure. A high temperature and flame resistant, light weight, highly insulating product results. If desired, protective sheets of material may be bonded to selected product surfaces during or after the molding operation.
REFERENCES:
patent: 4518717 (1985-05-01), Long et al.
patent: 4520071 (1985-05-01), Noda et al.
patent: 4814356 (1989-03-01), Bongers et al.
Foelak Morton
Gilliam Frank D.
Sorrento Engineer, Inc.
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