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| Titel: |
Synthesis, Characterization and Glass Reinforcement of Poly(Urea-imide)s, Part-1 |
| Auteur: |
Patel, A. M. Desai, K. K. Patel, H. S. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 40 (1998) nr. 1-2 pagina's 115-126 |
| Jaar: |
1998-04-01 |
| Inhoud: |
Poly(urea-imide)s (PUIs) were prepared by Diels-Alder(DA) intermolecular polymerization of 4-methyl-1,3-phenylene bis(2-furanyl methyl urea) (BFU) I, with various bis-(maleimido) compounds (IIa-h). The DA reaction was carried out in 1,4-dioxane as solvent as well as in bulk followed by aromatization (dehydration) of poly(tetrahydro phthalimide) intermediates (IIIa-h) in the presence of acetic anhydride. All the PUI (IVa-h) samples were characterized by elemental analysis, IR spectral studies and thermogravimetry. The PUIs exhibit good thermal stability. BUF and bismaleimides were polymerized (at 145±10°C) by in situ DA intermolecular reaction into moderately thermally stable PUIs glass fibre composites (i.e. laminates) without evolution of byproducts. The prepared composites were characterized by chemical resistivity and mechanical properties. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 11 van 14 gevonden artikelen
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