Epoxy resins modified with poly(vinyl acetate)
| Autor: | Rosa M. Masegosa, A. Lapprand, M. G. Prolongo, C. Arribas, C. Salom |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Bisphenol A
Materials science Diglycidyl ether Metals and Alloys Epoxy Miscibility Industrial and Manufacturing Engineering Computer Science Applications chemistry.chemical_compound Differential scanning calorimetry chemistry Chemical engineering Modeling and Simulation visual_art Phase (matter) Polymer chemistry Ceramics and Composites Vinyl acetate visual_art.visual_art_medium Curing (chemistry) |
| Zdroj: | Journal of Materials Processing Technology. :827-831 |
| ISSN: | 0924-0136 |
| DOI: | 10.1016/s0924-0136(03)00356-x |
| Popis: | Miscibility and curing behaviour have been studied in blends of poly(vinyl acetate) (PVAc) with diglycidyl ether of bisphenol A (DGEBA) resin and 4,4′-diaminodiphenylsulphone (DDS) used as curing agent. The PVAc component was used as a potential toughness modifier. Binary mixtures DGEBA+PVAc show complete miscibility over the whole composition range. Ternary mixture DGEBA+DDS in stoichiometric ratio +10% (w/w) PVAc behaves also as homogeneous phase. However PVAc was found to be inmmiscible with the highly amine-cross-linked epoxy resin. It was found that phase separation in DGEBA+DDS+PVAc blends occurred as the conversion reaches a value close to 40%. In the final cured material two phases are present: an epoxy phase and a PVAc phase. It was also found a slow down of the reaction when PVAc was present. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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