| Titre : |
Storage-stable, fiber-reinforced adhesive films |
| Type de document : |
texte imprimé |
| Auteurs : |
Claude Hosotte, Auteur ; Raphael Schaller, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 12-16 |
| Note générale : |
Bibliogr. |
| Langues : |
Multilingue (mul) |
| Catégories : |
Adhésifs -- Stockage
Copolymère éthylène acide acrylique
Essais de pelage
Fibre aramide
Fibres à orientation unidirectionnelle
Films adhésifs
Films adhésifs -- Propriétés mécaniques
Polyuréthanes
Stabilité au stockage
Stratifiés
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
The desire for lightweight yet strong composite materials is echoed by various industries confronted with new, often extreme, requirements. With this in mind, Nolax has developed fiber-reinforced adhesive films that combine toughness and high tensile strength combined with low weight and outstanding flexibility. |
| Note de contenu : |
- From fabric to yarn and filament
- The Nolax matrix : solvent-free and storage-stable
- Crosslinking on demand
- Customized properties
- Thermal and alternating climate resistance
- Storage-stable for over 12 months
- Fig. 1 : A membrane sail in action
- Fig. 2 : Fiber-reinforced adhesive films from Nolax. Unidirectionally arranged filaments are embedded in an adhesive and can be processed at elevated temperature and pressure, for example, into membrane sails
- Fig. 3 : Stress-strain diagram of a filament, yarn and fabric made of aramid. The zigzag path of yarns in a fabric significantly reduces their performance compared to a single filament
- Fig. 4 : Continuous multi-filament yarns are unwound, spread and impregnated. This process produces fiber-reinforced adhesive films with typical weights of <100 g.m-2.
- Fig. 5 : Calculated off-axis Young's moduli of the fiber-reinforced adhesive film T52.5110 and their laminates - unidirectional : one layer of fiber-reinforced adhesive film, cross-ply laminate : two layers in fiber directions (0°/90°), quasi-isotropic laminate : four layers with fiber directions (0°/45°/90°/135°), (a) measurements of Young's modulus at 0°, 45° and 90° to the fiber orientation in T52.5110. The Tsai-Hill criterion [5] was used to calculate the off-axis Young's moduli
- Fig. 6 : Tensile force k1% value (the force at 1% elongation) versus number of plies of (a) Nolax T51.5000 with 15 g.m-2, in comparison with a (a) standard polyester fabric 450 g.m-2, single layer
- Fig. 7 : T-Peel force at 20°C and 80°C of laminates with two layers of fiber-reinforced films
- Fig. 8 : Plotting the T-peel force of laminates against the storage time of the fiber¬reinforced adhesive films. The unidirectional laminates consist of 10 layers of T51.5000 (weight 15 g.m-2) dried at (a) 50 °C or (1:1) 60 °C - with a line speed of 8 m.min-' and a drying section of approx. 25 m
- Table 1 : Overview of the mechanical properties (in fiber direction), density and application temperature of three different fiber-reinforced adhesive films
- Table 2 : SAFT values before and after the climate change test Nolax (LRPU : latent-reactive polyurethane / EAA: ethylene-acrylic acid copolymer) |
| En ligne : |
https://drive.google.com/file/d/1KlOKDigHhWBmKEKGedtG0pCyUK4M7914/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35693 |
in ADHESION - ADHESIVES + SEALANTS > Vol. 18, N° 2/2021 (2021) . - p. 12-16
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