Accession Number:

ADA076008

Title:

Moisture Sorption and Diffusion in Hercules 3501-6 Epoxy Resin.

Descriptive Note:

Progress rept. Oct 77-Oct 78,

Corporate Author:

NAVAL SURFACE WEAPONS CENTER WHITE OAK LAB SILVER SPRING MD

Personal Author(s):

• Augl,Joseph M.

Report Date:

1979-03-30

Pagination or Media Count:

41.0

Abstract:

The objective of this work was to obtain the moisture sorption equilibria of Hercules 3501-6 epoxy resin and its concentration dependent moisture diffusion coefficient. These data are necessary for predicting changes in aircraft strucctural composites properties where this resin is used as a matrix material. The data were obtained by sorption measurements with a Cahn electrobalance. It was found that the diffusion coefficient is strongly concentration-dependent at low moisture concentration, however, it is fairly flat at moisture concentrations corresponding to equilibrium concentration between 30 to 80 percent relative humidity. Author

Descriptors:

• *MEASUREMENT
• *DIFFUSION COEFFICIENT
• *MOISTURE
• *EPOXY RESINS
• *SORPTION
• AIRCRAFT
• PREDICTIONS
• COMPOSITE STRUCTURES
• MATRIX MATERIALS
• LOW HUMIDITY

Subject Categories:

• Plastics
• Numerical Mathematics
• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE