METHOD FOR FABRICATING THERMOPLASTIC HIGH TEMPERATURE POLYMER GRAPHITE FIBER COMPOSITES
Assignee
UNITED TECHNOLOGIES CORPORATION, A CORP. OF DE
Filed
Aug 31, 1989
Granted
May 23, 1995
Location
GLASTONBURY CT US
Abstract
A pretreatment process for fabricating polyimide composites from prepreg, thereby reducing the formation of void producing or blister producing gases at elevated temperatures during a subsequent post cure cycle. The pretreatment process includes heating a prepreg to an elevated temperature and holding at said temperature for a period of time sufficient to achieve complete imidization of the prepreg but such that the material is still processable. Processes are also disclosed for the subsequent cure of the prepreg to form thermoplastic high temperature fiber reinforced composites.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
May 3, 1990
Rescinded
Feb 18, 1994
Duration
3 years, 9 months
Inventor
- 1DANIEL A. SCOLA
Record Details
- Patent number
- US 5417792
- Application
- 07401716
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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