FILAMENT-WINDING PLASTICS. PART 3. SOME EFFECTS OF CURING AGENT STRUCTURE UPON EPOXIDE PLASTIC PHYSICAL PROPERTIES.
Abstract
Plastics studies have attempted to relate the molecular structural characteristics of epoxide resins to tensile properties of the plastics obtained, with particular attention devoted to resin systems suitable for filament-winding applications. Recent work has been concerned with finding an amine curing agent which gives optimum properties to the epoxy component. Basic requirements are that it be a liquid or low-melting solid or be soluble in the epoxide and that the reaction rate between the epoxide and the curing agent be slow enough to permit proper winding. Because of their slower reaction rate with epoxides, aromatic amines have been found preferable to aliphatic or alicyclic ones. Except in the case of m-aminobenzyl amine, physical properties of the system are not improved by extension of aliphatic side chains from the phenyl ring of the curing agents, and tensile properties of the plastic are diminished as the number of methylene groups increases. Of the combinations studied, one of the most suitable resins for wet winding is the system of m-aminobenzyl amine and the diglycidyl ether of Bisphenol A, because of its high elongation. The cis-trans bis(2,3-epoxy cyclopentyl) ether/maminobenzyl amine system is probably the strongest plastic available for wet winding. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 13, 1965
- Accession Number
- AD0622118
Entities
People
- J. R. Griffith
Organizations
- United States Naval Research Laboratory