Guayule Resin in Amine-Epoxy Strippable Coatings
Polymers and High Performance Materials
The use of guayule coproducts as plasticizer/adhesive modifiers in high-performance epoxy resin coatings was investigated. An amine curing agent, Jeffamine D-400, was employed to affect crosslinking. Epoxy resin coatings with and without guayule modification were applied to treated and untreated steel and aluminum panels for performance evaluation. The film properties of both modified and unmodified coatings were comparable on aluminum and steel substrates which had been specifically treated to optimize adhesion. In contrast, the films from the guayule modified coatings cast onto untreated panels exhibit less adhesion and are strippable. The thermal properties and surface morphology of free films were studied. Scanning electron microscopy has confirmed incompatibility of the guayule and epoxy resins. Incompatibility increases with increasing amounts of guayule resin. As a result, the degree of adhesion can be controlled by judicious use of guayule resin.
Thames, S. F.,
(1991). Guayule Resin in Amine-Epoxy Strippable Coatings. Bioresource Technology, 35(2), 185-190.
Available at: http://aquila.usm.edu/fac_pubs/6969