EFFECTS OF ATMOSPHERIC HUMIDITY ON BOND STRENGTHS ON MATERIALS - ADHESIVES AND CEMENTS - METLBOND 4021 (NARMCO RESINS AND COATINGS, INC.). SCOTCHWELD AF-10 (MINNESOTA MINING AND MANUFACTURING CO.) ADHESIVE TAPES
Abstract
Test results indicated that exposure of uncured tape to relative humidity from 75 to 100% is detrimental to the bond strength of Metlbond 4021 adhesive at -67 F, room temperature, and at 300 F. Scotchweld AF-10 is also affected, but to a lesser degree. Metlbond 4021 adhesive absorbs water from the atmosphere at 100% relative humidity in larger quantities than AF-10, adding as much as 50% of its own original weight of water. Both adhesives appear to reach equilibrium with atmospheric humidity in about 24 hours. They continue to absorb water at decreasing rates after exposures of two weeks or more to 100% relative humidity. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 13, 1958
- Accession Number
- AD0290658
Entities
People
- E.e. Keller
- G.l. Picotte
- H.r. Barringer
Organizations
- General Dynamics