Phase morphology and mechanical properties of a poly(ether sulfone)-modified bismaleimide resin
| Autor: | Xiaoyun Liu, Zhe Wen Han, Guo Zhu Zhan, Shan Jun Li, Ying Feng Yu |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
chemistry.chemical_classification
Thermoplastic Materials science Polymers and Plastics Scanning electron microscope Thermosetting polymer Ether General Chemistry Surfaces Coatings and Films Sulfone body regions chemistry.chemical_compound Differential scanning calorimetry chemistry Ultimate tensile strength Materials Chemistry Composite material human activities Curing (chemistry) |
| Zdroj: | Journal of Applied Polymer Science. 106:77-83 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.26493 |
| Popis: | The polymerization-induced phase-separa- tion behavior of a thermoplastic (poly(ether sulfone) (PES))- modified thermosetting bismaleimide resin during isother- mal curing was investigated with differential scanning calorimetry, time-resolved light scattering, and scanning electron microscopy with various contents and molecular weights of PES. The results suggested that the phase struc- ture changed from a dispersed structure to a bicontinuous structure to phase inversion with an increase in the PES content. Three kinds of PES with different molecular weights were used to study the effects of the molecular weight on the phase structure and mechanical properties of modified systems. With higher molecular weight PES, a phase-inversion morphology could be obtained at lower PES contents. The curing conversion of bismaleimide was affected by the composition of the blend. The curing rate decreased with an increase in the PES content. A blend with 15 wt % PES of a suitable molecular weight had a higher tensile strength and elongation at break than that without PES. 2007 Wiley Periodicals, Inc. J Appl Polym Sci 106: 77-83, 2007 |
| Databáze: | OpenAIRE |
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