Properties of UV-Curable Hyperbranched Urethane-Acrylate Modified Acrylic Monomer Coatings
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| Title | Properties of UV-Curable Hyperbranched Urethane-Acrylate Modified Acrylic Monomer Coatings |
| Authors | |
| Abstract | In this work it is suggested to modify trimethylolpropane ethoxylate triacrylate (TMPETA) with solvent born difunctional urethane acrylate oligomer (UA) of hyperbranched structure and high molecular weight. In this case the photopolymer composition initial UV-precuring was replaced by thermal action. Under heating at 70 °C temperature solvent (butyl acetate) evaporates and layer with proper deformation properties for microrelief embossing was obtained. After microrelief embossing UV-curing of photopolymer follows and photoinitiator initiated radical photopolymerization of TMPETA monomer and UA oligomer proceeds. The goal of this work - to investigate the influence of the acrylic composition on the UV-cured coating mechanical properties and on the geometrical parameters and optical properties of replicated microrelief. It was defined that coatings with UA oligomer possess higher deformation and mechanical properties due to the increase in layer flexibility. The replicated microrelief of geometrical parameters and diffraction efficiency close to those of master matrix to be used was obtained using compositions containing 30 wt. % - 40 wt. % of UA.http://dx.doi.org/10.5755/j01.ms.17.4.772 |
| Publisher | Kaunas University of Technology |
| Date | 2011-11-24 |
| Source | Medžiagotyra Vol 17, No 4 (2011) |
| Rights | Copyright terms are indicated in the Republic of Lithuania Law on Copyright and Related Rights, Articles 4-37. The copyright for articles in this journal are retained by the author(s), with first publication rights granted to the journal. By virtue of their appearance in this open access journal, articles are free to use with proper attribution in educational and other non-commercial settings. |