Accession Number:

AD0880151

Title:

Hydrolytic Stability of Potting Compounds for Electrical Connectors

Descriptive Note:

Technical rept. Aug 1968-Apr 1970

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH

Personal Author(s):

• House, Philip A.

Report Date:

1970-11-01

Pagination or Media Count:

112.0

Abstract:

An extensive evaluation of elastomeric potting compounds for their ability to withstand long term exposure to high temperature and humidities is described. This work was initiated as a result of the reversion of potting compounds in the electrical connectors on the F-4 in which the compounds softened and liquefied. Materials tested included polyurethanes, epoxies, silicones and polysulfides. Coatings and tubing were tested in addition to the potting compounds. This effort involved the establishment of more severe humidity-temperature tests than were previously used in military specifications. The results of testing many specification and non-specification compounds to the more severe conditions are included.

Descriptors:

• *EMBEDDING SUBSTANCES
• ELASTOMERS
• TEST METHODS
• THERMAL STABILITY
• HYDROLYSIS
• TROPICAL TESTS
• HUMIDITY
• ISOCYANATES
• SILICONES

Subject Categories:

• Miscellaneous Materials
• Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE