[article]
| Titre : |
Latent acid catalysts for process control of phenolics |
| Type de document : |
texte imprimé |
| Auteurs : |
Graham Murray, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
p. 57-58 |
| Langues : |
Anglais (eng) |
| Tags : |
Phénoplaste 'Pile combustible' Application 'Pressage à chaud' Résol Polycondensation 'Matériau composite' 'Contrôle de processus' |
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
For composite products where fire safety is paramount and high temperature resistance is important, the polymer of choice is phenolic. Phenolic composites are usually produced using resole resins, which are polymerised by the addition of strong acid catalysts or by hot pressing. Resole resins however, can be highly reactive when mixed with strong acids and dangerous exothermic reactions can result. The reactivity of an acid catalysed resole can be so rapid that the processing becomes impossible. This often means the pre-mixing of resin and catalyst must be done immediately before use, limiting applications to those where compounding is close to production operations because shipping and storage is problematic. Finding an effective latent acid catalyst to control polymer chemistry solves many process issues. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13777 |
in JEC COMPOSITES MAGAZINE > N° 61 (12/2010) . - p. 57-58
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