The bimodal phase separation process of a rubber-modified epoxy system, consisting of diglycidyl ether of bisphenol A (DGEBA), and a hydroxyl-terminated butadiene-acrylonitrile random copolymer (HTBN), during curing with tetrahydrophthalic anhydride was studied by time-resolved small-angle light sca
Reaction-induced phase separation in rubber-modified epoxy resins
โ Scribed by Keizo Yamanaka; Yasushi Takagi; Takashi Inoue
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 699 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0032-3861
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Real time dielectric and rheological measurements are reported for mixtures of carboxylterminated butadiene acrylonitrile in epoxy resins obtained by curing either with diaminodiphelmethane at 80 ยฐ or triethylenetetramine at 30: with the diglycidylether of bisphenol-A. A good correlation is observed
Scanning electron microscopy and dynamic mechanical spectroscopy have been used to study phase separation of dissolved polyethersulphone (PES) from trifunctional and tetrafunctional epoxy resins during curing. No phase separation was observed at high concentrations of the tetrafunctional resin. Obse