Titre : |
In-line coated profiles : optimizing the pultrusion process |
Type de document : |
texte imprimé |
Auteurs : |
Nora Lardiès Miazza, Auteur |
Année de publication : |
2017 |
Article en page(s) : |
p. 28-30 |
Langues : |
Anglais (eng) |
Catégories : |
Capteurs (technologie) Composites Formulation (Génie chimique) Micro-ondes Polyesters Polymérisation Primaire (revêtement) Procédés de fabrication Pultrusion Thermométrie
|
Index. décimale : |
668.4 Plastiques, vinyles |
Résumé : |
The pultrusion process in an effective way to process composites, however several drawbacks that reduce the competitiveness of pultruded profiles in comparaison to traditional materials still need to be addressed. On the one hand, the process is limited by the time required to polymerize the resin inside the die, which results in a low-speed process. On the other hand, when a coating is needed to improve surface properties, the surface of this profile must be carefully prepared off-line, requiring additional sanding and painting steps that are expensive, highly labour-intensive and polluting. |
Note de contenu : |
- Creating a specific microwave antenna for the pultrusion die
- Formulating the resin with the necessary microwave susceptors
- Modelling the pultrusion process for die design
- Developing a specific sensor system to continuously monitor the curing degree of the resin and coating inside the pultrusion mould
- Manufacturing the molds and integrating all the subsystems
- Formulating a fast-curing primer to coat the composite profile and foster the adhesion of a debondable adhesive
- FIGURES: 1. Antenna MW for the curing of the ALKE's profile (automotive sector) - 2. Open antenna system available in AIMPLAS' facilities and temperature vs. time for the curing of the polyester resin with susceptor C - 3. First curved sensor developed for an in-line process - 4. The real-time temperature measurements of the 4 heating zones together with the temperature at the Microwave heating area and the profile speed are displayed - 5. Online prediction of the degree of cure from the 4 cure sensors. At the top right-hand-side the real-time degree of cure are displayed for the 2 sensors in the resin region and the other 2 cure sensors at the primer area - 6. First coated pultrusion profile obtained in-line - 7. Assembly of the full cargo bed by adhesive join and easy debonding picture |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29170 |
in JEC COMPOSITES MAGAZINE > N° 115 (08-09/2017) . - p. 28-30