Electron Beam Manufacturable Composites for Space Applications
Abstract
This program investigated electron beam curing with three types of composite matrix resins for use in space applications. Cyanate ester and propargyl terminated resins were shown to undergo radiation-induced rearrangements and did not polymerize. Recommendations are included for chemical structures containing cyanates and acetylene groups that should not undergo rearrangement and thus should produce high molecular weight polymers. Cationic-initiated epoxy resins polymerized to high glass transition polymers were selected for fabrication of composites reinforced with an intermediate modulus carbon fiber. Those systems displayed mechanical and thermal properties equivalent to those of thermally cured composites with similar matrix resins even when electron beam cured at temperatures below -30 C. When optimized, electron beam curing at subambient temperatures will result in high performance composite structures for space applications with low, stress-free temperatures and improved dimensional stability.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1998
- Accession Number
- ADA344507
Entities
People
- Andrea E. Hoyt
- Larry A. Harrah
- Ronald E. Allred