Investigation of Resin Systems for Improved Ablative Materials.
Abstract
This final report describes the work performed to advance the state of the art of resin matrices required for improved ablative materials for use with high energy fluorine containing liquid propellant systems. This experimental program was a continuation of a previously reported effort (NASA CR-54471) and consisted of a systematic materials development effort of resin synthesis and property determination of new and previously identified resin systems, optimization of composite processing parameters and fabrication and use testing of candidate ablative composites. Two new high char forming polymer systems were synthesized, fabricated and evaluated in composite form for ablative use effectiveness. These aromatic/heterocyclic polymer systems were designed to be processed readily with the evolution of minimum quantity of volatile matter during cure. As a consequence, low void, high strength composites were prepared which exhibited ablative performance (combination of dimensional stability, weight retention and resistance to thermal shock) superior to commercially available ablative materials when tested in a FLOX/methane torch combustion environment. Tested composites were prepared using Refrasil, graphite and carbon cloth and titanium diboride fibrous reinforcements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1968
- Accession Number
- ADA309498
Entities
People
- E. A. Burns
- H. R. Lubowitz
- J. F. Jones
Organizations
- TRW Inc.