CTBN variability study. Final report

Technical Report · Fri May 01 00:00:00 EDT 1981

OSTI ID:6238481

Young, D A

The carboxyl-terminated butadiene/acrylonitrile copolymer (CTBN)/epoxy adduct, BKC 20102, which is used for encapsulating electronic devices, was studied to improve its quality and reliability. The average chemical, physical, and mechanical properties were obtained by testing 16 batches of adduct prepared from 13 separate lots of CTBN. Three methods were determined to prepare a clear, soluble liquid adduct that does not separate in storage or transit. Two of these methods also produce a clear epoxy casting and a filled potting compound with improved impact and flexural, compressive, and tensile strengths. Study of the temperature-viscosity profile during the cure of the liquid adduct has shown that a slight change in the degassing time can significantly reduce foaming during degassing.

• Research Organization: Bendix Corp., Kansas City, MO (USA)
• DOE Contract Number: AC04-76DP00613
• OSTI ID: 6238481
• Report Number(s): BDX-613-2565; ON: DE81023773
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL PREPARATION
QUALITY CONTROL
EPOXIDES
PHYSICAL PROPERTIES
ELECTRONIC EQUIPMENT
PROTECTIVE COATINGS
COATINGS
CONTROL
EQUIPMENT
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
SYNTHESIS
360603* - Materials- Properties
360601 - Other Materials- Preparation & Manufacture