- Author
-
Weissberg, S. G.
|
Jessup, D. A.
|
Weber, C. G.
- Title
- Stability of Sheathing Papers as Determined by Accelerated Aging.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
BMS 35
December 22, 1939
9 p.
- Keywords
-
paper
|
stability
|
aging (materials)
- Abstract
- The more familar types of sheathing papers were tested to obtain authoritative information on how well they can be expected to retain their desirable qualities in service. Accelerated aging was used, because to obtain comparable data from natural aging would require much more time. The aging treatment included cycles of wetting, freezing, drying, and baking; and the effects of the treatment were observed by comparison of the properties before and after aging. Important properites of this class of papers are resistance to the passage of air, water, and water vapor; hence, the judgment of stability was based largely on the degree of retention of those attributes. In general, the papers lined with metal foils were least affected by aging. The asphalt-treated papers differed widely. The single-ply papers as a class had lower initial resistance to water and moisture vapor than the laminated papers but retained the resistance somewhat better than the latter, although one of the duplex papers received a very high rating. Rosin-sized papers had unsatisfactory aging properties.