| Titre : |
Adhesion as a benchmark |
| Type de document : |
texte imprimé |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 52-55 |
| Langues : |
Anglais (eng) |
| Catégories : |
Adhésion
Couches minces
Liaisons covalentes
Matières plastiques
Métaux
Nanotechnologie
Plasma à pression atmosphériqueUn plasma à pression atmosphérique (ou plasma à PA ou plasma froid) est le nom donné à une catégorie spéciale de plasma pour lequel la pression approche celle de l’atmosphère.
Le plasma à pression atmosphérique marque une nette différence avec le plasma basse et haute pression. En effet, contrairement à ces derniers aucune enceinte de traitement n'est nécessaire. Ce type de plasma peut donc être utilisé directement sur ligne de production, évitant ainsi l'utilisation de vide qui est extrêmement onéreuse.
Polymères
Projection au plasma
|
| Index. décimale : |
671.7 Finissage et traitement des surfaces |
| Résumé : |
A new environmentally-safe systems solution based on atmospheric plasma coating not only promises a particularly strong, media-tight plastic-to-metal bond in the injection molding process, but also a very cost-effective solution. |
| Note de contenu : |
- Plasma under normal pressure
- Vision and challenge
- Multi-functional and millimeter precise
- Adaptation of the plastic compounds
- Bond strength in the test phase
- Media tightness
- Technical implementation
- FIGURES : 1. The newly chemical-physical coating process enables the area-selective application of functional nanocoatings in milliseconds and the formation of covalent bonds between different materials - 2. The penetration of water through the boundary layer of a plastic-to-metal bond due to poor adhesion leads to corrosion of the metal and in most cases, to complete functional failure - 3. Comparison : The maximum tensile shear strengths of Plasma-SealTight bonds are well above the maximum values obtained from laser-structured test specimens or ones coated with an adhesion promoter - 4. Water penetrating the boundary layer of the plastic-to-metal bond can lead to corrosion, failure of distinction the component function or even delamination (left). However, the plasma polymer layer (right) free prevents this by Ming every available cavity, leaving the water no opportunityto penetrate the boundary layer. Thus the covalent bond acts as a corrosion-proof barrier - 5. The micrograph shows a clear distinction between the plasma-coated, corrosion-free metal surface and the uncoated corroded area - 6. The turnkey, fully automated plasma cell contains evertything the plasma process needs and can be connected to any conventional injection molding machine |
| En ligne : |
https://drive.google.com/file/d/1vQk9ucCbcVE59mVHzA912nmA9wmVd9qn/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28322 |
in INTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 10, N° 1 (2017) . - p. 52-55
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Adhesion as a benchmark in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 10, N° 1 (2017)
