Development of High Temperature Low Cure shrinkage Adhesives.
Abstract
A diallyl- terminated spiro orthocarbonate was synthesized via a multi-step procedure. Polymer blands of SOC/bismaleimide were formed. :DSC and FTTR confirmed that cationic- catalyzed ring opening was achieved. Volume expansion was measured and found to be related to the concentration of SOC in the formulation. The underlying mechanism for such expansion was analytically modeled using quantum chemical- calculations that correlates with experimental results. Adhesive prepregs of the SOC-bismaleimide polymer blends were prepared and good quality lap-shear specimens were fabricated Data indicate that the blends were at least as good as the basselines.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 30, 1999
- Accession Number
- ADA373561
Entities
People
- Charles W. Lee
- Chuk L. Leung