| Summary: | 碩士 === 國立臺北科技大學 === 化學工程與生物科技系化學工程碩士班 === 106 === UV inks have the advantage of low pollution, but they cannot completely replace the advantages of solvent-based and water-based inks.
For example: The traditional solvent type ink, water-based ink toughness, elasticity, hardness and heat resistance.
This study uses UV-band ultraviolet light to cure different compositions and different compositions of polyurethane acrylic resin. To understand the pros and cons of changes in its physical properties.
At a fixed light initiator content of 3g, defoamer 5300, 2g, defoamer 5368, 0.2g, leveling agent 0.5g, the desired test material was obtained by varying the ratio of oligomer to monomer. Difunctional (Aliphatic Difunctional Urethane Acrylate, PU-2100) or Hexafunctional Urethane Acrylate (PU-5000) with acrylics containing monofunctional monomers (2-phenoxyethyl acrylate, R-210) containing monofunctional monomers and acrylic (polydipentaerythritol hexaacrylate, R-265) With the increase and decrease of the
proportion of mutual deployment, the finished product was screen printed with 1/200 of the
screen mesh, and the ink layer after printing was cured at a speed of 8 meters per minute on
a UV light machine to obtain a film of 0.1 MM.
The ratios of the elasticity, hardness and Tg points of the films of the mixed resin sheets obtained in the various ratios A and B as shown below were measured by DMA and DSC.
A. Contains difunctional or hexafunctional urethane acrylics, The properties of the resin ester change with the type of monomer functional groups, study its elasticity, hardness and Tg point changes.
B. To study the change of elasticity, hardness and Tg point of the bifunctional or hexafunctional urethane acrylic resin with mixed monomer functional groups.
The research obtained knows that the data is mixed and formulated into UV inks, thereby optimizing the shortcomings of the current UV inks, and can take advantage of the quick-drying, low-pollution, and process-saving advantages of UV inks to replace some of the current traditional inks.
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