PREPARING POLYMERIC MATRIX COMPOSITES USING AN AQUEOUS SLURRY TECHNIQUE
Assignee
UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE
Filed
Nov 6, 1991
Granted
Oct 12, 1993
Location
NEWPORT NEWS VA US
Abstract
An aqueous process was developed to prepare a consolidated composite laminate from an aqueous slurry. An aqueous poly(amic acid) surfactant solution was prepared by dissolving a poly(amic acid) powder in an aqueous ammonia solution. A polymeric powder was added to this solution to form a slurry. The slurry was deposited on carbon fiber to form a prepreg which was dried and stacked to form a composite laminate. The composite laminate was consolidated using pressure and was heated to form the polymeric matrix. The resulting composite laminate exhibited high fracture toughness and excellent consolidation.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 27, 1992
Rescinded
Jul 29, 1992
Duration
4 months
Inventor
- 1NORMAN J. JOHNSTON
Record Details
- Patent number
- US 5252168
- Application
- 07788403
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records