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Ultimate properties of epoxy resins modified with a polysiloxane-polycaprolactone-blockcopolymer

: Könczöl, L.; Döll, W.; Buchholz, U.; Mülhaupt, R.


Journal of applied polymer science 54 (1994), pp.815-826
ISSN: 0021-8995
ISSN: 1097-4628
Journal Article
Fraunhofer IWM ()
blend; epoxy resin; fracture; liquid rubber; rubber toughening; silicone; strength; toughness

Mechanical and fracture mechanics properties of transparent multiphase epoxy resins toughened with various amounts of compatibilized silicone liquid rubbers consisting of polycaprolactone-block-poly(dimethylsiloxane)block-polycaprolactone triblock-copolymer have been investigated. At silicone liquid rubber contents < 10 wt% significantly improved toughness has been achieved without adversely affecting thermal and mechanical properties. Fractographic and interferometric methods have been applied to study crack propagation in such siliconemodified resins.