Anti-glare Hard Coat Poly(methyl methacrylate) Sheet
| Autor: | Chia-Hung Lu, 呂珈宏 |
|---|---|
| Rok vydání: | 2009 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 97 In this study, the nano-particle containing spray solution was prepared via a sol-gel process, and sprayed onto a pre-treated hard coating PMMA sheet to form an anti-glare layer, and methods for improving the adhesion between anti-glare layer and hard coating film surface were also proposed. Experimentally, the surface of hard coating film, including that of the lab-made L5H- and the commercialized 5H-, 6H- PMMA sheet, were surface pre-treated by alkali and acid solutions to produce a reactive functional group on the surface after the pretreatment. FTIR analysis for the ester group changing to carboxylic acid group, SEM image of surface morphology change for the hard coating film after pretreatment, and surface free energy calculation were used to describe the effects of pretreatment. Sol solution was prepared through the sol-gel procedure to obtain the epoxy-group-containing particles dispersed in a buffered solution. The nano-particle size analyzer and FTIR were used to monitor the sol-gel process proceeding and the solution stability. Additionally, the catalyst N,N-dimethylaniline (DMA) was added to the sol solution to be a catalyst for accelerating the reaction between the carboxylic and epoxy groups, and its effect on the sol solution stability was also monitored through the FTIR and nano-particle size analyzer. Then, the prepared sol solution was adjusted to be the spray solution by first adding diluents, and then holding for a period of time or/and adding the DMA, finally adding polymer disperse. The spray solutions were then sprayed onto the surface of hard coat PMMA at different spray times. Various antiglare coatings were obtained after drying, and their surface morphologies were observed using SEM and OM to describe the relationship between antiglare property, spray times, and morphology. Finally, the results show that the anti-glare hard coat PMMA sheets can be prepared using the process that this thesis developed, having proper and balanced transmittance and resolution capability. And, the adhesion between hard coat PMMA sheet and the anti-glare layer composed from epoxy group containing nano-particles can be reasonably improved through the proposed alkali/acid pretreatment. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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