| Titre : |
The preparation and characterization of abrasion-resistant coatings on polycarbonate |
| Type de document : |
texte imprimé |
| Auteurs : |
Yu-Hong Chen, Auteur ; Li-Xiang Liu, Auteur ; Mao-Sheng Zhan, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 79-86 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésion
Caractérisation
Dureté (matériaux)
Méthyltriméthoxysilane
Polycarbonates
Résistance à l'abrasion
Revêtements
Sol-gel, Procédé
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A series of abrasion-resistant coatings based on methyltrimethoxysilane (MTMS), tetraethoxysilane (TEOS), and methacyloxypropyltrimethoxysilane (MEMO) were synthesized via a sol–gel method and applied to polycarbonate (PC) substrate. Through a comparison with an uncoated PC substrate, hardness, adhesion, and abrasion resistance of coated PC substrates were investigated. Fourier transform infrared (FTIR) spectra of these coatings before and after being cured indicated that the crosslinked structure of Si–O–Si was formed via the hydrolysis–condensation reactions of alkoxy silane. The optical test results showed that coated PC substrates possessed higher transmittance and lower haze than uncoated PC substrates. The hardness and adhesion data demonstrated that PC substrates coated with the hybrid coatings (MTMS/TEOS/MEMO coatings) possessed the greatest hardness and optimal adhesion. After 500 wear cycles, the PC substrate with MTMS/TEOS/MEMO coatings showed some grooves and wear tracks without any spallation or delamination, and there was a decrease of only 1.0–1.3% in transmittance and an increase of only 5.68–7.44% in haze. Whereas uncoated PC substrate and substrates with MTMS and MTMS/TEOS (molar ratio is 1.5:1) coatings exhibited a decrease of 3.3, 3.9, and 2.4% in transmittance and an increase of 30.19, 17.42, and 12.35% in haze, respectively. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of coating solutions - Preparation of coatings on PC substrates - Characterization
- RESULTS AND DISCUSSION : The properties of MTMS/TEOS coatings (The chemical structure - The optical properties - The hardness and adhesion - The abrasion resistance) - The properties of MTMS/TEOS/MEMO coatings (The optical properties - The hardness and adhesion - The abrasion resistance - Morphological observations of M and MTM-1.0 before and after being worn) |
| DOI : |
10.1007/s11998-012-9430-x |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9430-x.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17475 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 1 (01/2013) . - p. 79-86
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