Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"UV-curable"”.
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UV-curable organic-inorganic hybrid polyurethane coating
… that were cured with a single ultraviolet (UV) trigger but two photo-initiators. Upon UV irradiation, the free-radical initiator initiated a free-radical reaction for acrylate cross-linking, and the photo-latent base initiated a sol-gel reaction for condensation of the silanes. This study …
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UV curable powder coatings for the finishing of leather
A novel powder coating binder system based on UV-curable, semi-crystalline polyurethane acrylates has been developed for heat-sensitive and highly flexible substrates, such as leather. The developed powder coating film had good abrasion and adhesion properties. The concepts applied in this work …
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UV-CURABLE PROTECTIVE COATING FOR THE INNER SURFACE OF STEEL PIPES
… toxic volatile organic compound (VOC) emissions. UV-curable coatings offer a compelling solution with low environmental impact and efficient pro-duction processes that avoid VOC emissions, reduce energy consumption significantly, and lower product costs. Applying UV-curable coatings, which …
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Design and synthesis of plant oil-based UV-curable acrylates for sustainable coating applications
A demand in sustainable polymers has been increased because of the environment concerns and saving finite petroleum resources. Plant oils are promising renewable resources to produce environmentally friendly polymer applications. Soybean oil-based resins such as epoxidized soybean oil (ESO) and …
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Formulation of uv curable resins utilized in vat photo polymerization for the additive manufacturing of gun propulsion charge in 3d printers
… for Additive Manufacturing (AM), utilizing UV laser stereolithography, is a new technique that makes it possible for the fabrication of complex geometries with high dimensional resolution. This layer by layer photopolymerization approach spans various industrial sectors from adhesives, inks …
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Synthesis and characterization of ultra violet curable renewable polymer graphite composites
… synthesis and characterization of ultra violet (UV) curable renewable polymer graphite (RPG) composites. Accordingly, the renewable polymeric composites were prepared through a film slip casting method at room temperature wherein graphite particles of various weight loadings were mixed with mass …
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Synthesis and Characterization of Tailored Photoactive Macromolecules
… molecular weight and crosslink density using UV light. The cinnamates and coumarins were reacted onto the polymers via multiple reaction pathways. Polymers were functionalized with coumarin or cinnamate groups via an esterification reaction between hydroxyl functionalities and an acid chloride …
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Environmentally friendly hybrid coatings for corrosion protection: silane based pre-treatments and nanostructured waterborne coatings
… for metals and to modify the inner structure of UV curable waterborne organic coatings. In the first part of this thesis thin (hundreds of nanometers) sol-gel films consisting of an experimental mixture of hybrid silicon alkoxides molecules were applied onto aluminium and hot dip galvanized (HDG) …
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Design and fabrication of physiologic tissue scaffolds using projection-micro-stereolithography
… in which complex parts are built out of UV-curable resins using ultraviolet light. The primary strength of PuSL is its capacity to translate CAD files into three-dimensional parts with unusually small feature sizes (~0.5 microns). It is an ideal candidate, therefore, for making tissue …
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Enhancing the Light output of Solid State Emitters
… Finally, solid immersion lenses formed from a UV-curable epoxy are explored as a method for increasing light out of 2D materials. It was found that for Tungsten Diselenide (WSe2) the solid immersion lens increased the intensity of the emitted photoluminescence, as well as preventing the …
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3D printing of hyaluronic acid scaffolds for tissue engineering applications
… applications. HA is functionalized with UV-curable glycidyl methacrylate (GM) and printed to create 3D scaffolds with filament diameters ranging from 10-250 µm. The potential for 3D HAGM scaffolds in injectable applications is demonstrated by flowing 1.5 mm x1.5 mm scaffolds through a …
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Analysis and characterisation of an acylphosphine oxide photoinitiator
Photoinitiators play a key role in UV-curable systems by generating the reactive species, free radicals, ions or molecule which initiate the polymerisation of the multifunctional monomers and oligomers. This research involves the study of the hydrolytic and photolytic stabilities of two important …
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Developing a Digital-to-Print Fabrication Pipeline for Multi-Color Photochromic 3D Printing
… By integrating photochromic materials into a UV curable resin, we can programmatically change the color of the resin depending on the type of RGB light projected. To build our 3D printing system, we modified an existing resin-based 3D printer to incorporate both a UV and visible light …
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Taint and odour phenomena in carton-board packaging systems
… kinetic details of odorous product formation. UV curable inks are commonly used in the printing of carton-board packaging materials. These inks contain photoinitiators which have the potential to affect the oxidation rate and extent of formation of unsaturated lipids, resulting in the formation …
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Nanomanufacturing of functional nanostructured surfaces for efficient light transport
… replicating the photonic nanostructures into a UV-curable polymer, with the help of laser interference lithography as a method of fabricating a master mold. Advanced techniques such as vacuum assisted-filling and a selective delaminating method are also developed to produce nanostructures more …
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Synthesis of environmentally-friendly polyurethane dispersions based on soybean oil- derived polyols and their applications in advanced water-based and uv-cure coatings
… The first polyol can be used in ambient curable systems, and the second can be utilized in ultraviolet radiation cure coatings. For ambient curable systems polyether chemistry based soy-polyol was developed from epoxidized soy fatty acid methyl ester (ESFAME). The cationic ring opening of …
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Design of Cleavable Monomers and Cross-Linkers for the Synthesis of Degradable Polymer Architectures
… with a cleavable comonomer. Gel nail polishes, UV-curable (meth)acrylic coatings, display superior mechanical and adhesive properties compared to alternative nail polishes. These properties, however, come at the expense of ease-of-removal. Here, a cleavable bond is introduced into the resulting …
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Ink Transfer Mechanisms in Flexographic Printing
… liquid. Printing was carried out with a standard UV curable flexographic ink. Ink transfer was observed to be affected by ceJl geometry. Equilibrium contact angle measurements were not directly related to ink transfer. However, it was the finding of this investigation that the relationship between …
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Field induced assembly of particulate systems
… can be converted into a solid film by curing top UV curable liquid. Here, electric field is used as a tool to facilitate AC field-driven assembly. The work describes the assembly of different size of regular particles and effective development of solid film. It is also shown that particles of two …
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