Development of Flame Resistant, High Efficiency Thermal Insulation.
Abstract
The purpose of the program was to build upon an understanding of polymeric-fiber-based thermal insulation, gained through two previous Al Research Co./U.S. Army Natick RD&E Center contracts, to develop two new flame-resistant insulator configurations. They were to be lofty, water-repellent, durable and highly efficient on a thermal resistance/weight basis. One was to he based upon staple (cut) fiber, the other on continuous filament (endless fiber). Ten inherently flame-resistant fiber candidates that were predicted to be feasible bases for highly efficient insulation were selected for laboratory trials. Initial work with than showed that flame resistance would be the most difficult-to-attain performance objective. A low insulator density target and the need to include binder material to provide insulator durability exacerbated the flammability problem. An empirical approach that relied heavily upon laboratory-scale batt making trials and flammability testing, but also included many other types of tests, eventually lead to adoption of a satisfactory, three-component, bonded, staple-fiber insulator prototype. It met all program performance objectives. Continuous filament insulator development was hindered by the lack of an adequately flame resistant, continuous filament material, by the lack of a satisfactory bonding system, and by the need to conduct many experiments on production, rather than laboratory scale. Further pursuit of the flame resistant, continuous filament insulator approach is not recommended unless new materials become available. However, it appears that the performance, versatility and reasonable cost of the flame resistant, staple-based insulator prototype will diminish the need for an alternative configuration. (jg)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1995
- Accession Number
- ADA291136
Entities
People
- James G. Donovan