METALLIZED FABRICS RESEARCH
Abstract
The limiting value of thermal porosity for Al-coated fabrics appears to be about 25%. Any subsequent improvement would come from using a metallizing process where the substrate would not be exposed at a normal angle to metal vapors, but where it would be exposed in such a way that the vapors would coat all of the surface of the yarn uniformly. All substrates show a marked decrease in the breaking strength of the fabric after cleaning, an operation which removes oils and plasticizer films as a prerequisite to metallizing. Abrasion tests indicate that wear does not materially decrease the efficiency of metallized fabric as a barrier to thermal radiation, since most effective abrasion takes place at the contact points only. Metallizing both sides of a substrate decreases the thermal porosity of the substrate significantly. The thermal porosity of a fabric decreases more than 5% when Au or Ag metallizing is substituted for Al.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 28, 1961
- Accession Number
- AD0289360
Entities
People
- John S. Light
- Leo B. Hieblinger