Synthesis of Hydrophobic, Crosslinkable Resins.
Abstract
The synthesis of a family of vinyl terminated aromatic polyether polymers is described. The synthetic method is a lengthy two-stage process, requiring further simplification to reduce the time and effort currently required. The polymers can be conveniently crosslinked by heat alone, to give matrix resins of exceptionally low moisture absorption. Compatability with styrene is limited, but styrene solutions have been successfully crosslinked to give thermosetting resins with moisture absorptions of 0.71% at 50 C. The moisture absorption characteristics of the homopolymers are slightly impaired by prolonged heat ageing in air. Flexural strength and modulus, glass transition temperature and dielectric properties are reported. In general they are comparable with the properties of unsaturated polyester resins. Woven roving glass laminates have been prepared and their flexural properties are given. Adhesion between matrix and glass fibres appears to be good. Keywords: Matrix, Polymer, Moisture, Diffusion, Synthesis, Laminate, Vinyl, Crosslinking, Dielectric, Wittig.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1986
- Accession Number
- ADA177530
Entities
People
- A. E. Matthews
- G. Pritchard
- J. S. Ghotra
- W. E. Douglas