Accession Number : AD0291661

Title :   EFFECTS OF WEATHERING ON THE MECHANICAL PROPERTIES OF FOUR REINFORCED PLASTIC LAMINATES

Corporate Author : FOREST PRODUCTS LAB MADISON WIS

Personal Author(s) : KIMBALL,KENNETH E.

Report Date : 18 JUL 1962

Pagination or Media Count : 1

Abstract : Four different reinforced plastic laminates were exposed to various environmental conditions for periods up to 36 months. After completion of the exposure, the laminated panels were evaluated under normal, wet, and elevated temperature conditions. Data on the effect of 3, 12, and 36 months' exposure on the flexural properties of laminates and their appearance after 36 months are presented. Results show that the effect of outdoor exposure varies with the types of laminates and conditions of exposure. Weathering at the Florida site usually resulted in the greatest reduction in strength. In general, normal and wet flexural strengths of the weathered glass-fabric laminates were 80% or more of the corresponding control strengths, but the elevated temperature strength was only about 55 to 75% of the controls. A higher percentage of over-all strength retention was noted for the phenolic-asbestos mat laminate than for the glass-fabric laminates. (Author)

Descriptors :   *LAMINATES, *PLASTICS, ASBESTOS, CONTROL, DEFORMATION, ELASTIC PROPERTIES, GLASS TEXTILES, HARDNESS, LAMINATED GLASS, MECHANICAL PROPERTIES, PHENOLIC PLASTICS, REINFORCING MATERIALS, RUPTURE, TENSILE PROPERTIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE