Organic polymers that can be easily processed with high transparent properties have low hardness. In order to enhance these properties, an inorganic material which improve the refractive index and mechanical property is introduced into the polymer coating solution. Inorganic materials like zirconia ...
Organic polymers that can be easily processed with high transparent properties have low hardness. In order to enhance these properties, an inorganic material which improve the refractive index and mechanical property is introduced into the polymer coating solution. Inorganic materials like zirconia having thermal stability, durability, mechanical properties, and optical properties was used. These hybrid materials have properties of organic polymers and inorganic materials. In order to produce these hybrid materials, inorganic materials having excellent dispersibility of polar and non-polar solvents should be used. In this study, zirconia having secondary size of 10 ㎛ was used for the application of polymer coating solution. γ-aminopropyltrimethoxysilane (APS) and γ-ureidopropyltrimethoxysilane (UPS) having hydrophilic functional groups was used as silane coupling agent of surface modifiers. also, trimethylchlorosilane (TMCS) and hexamethyldisilazane (HMDZ) having hydrophobic functional groups were used as silane of surface modifiers. Also, o-phenylphenoxyethyl acrylate (OPPEA) was used as a monomer for the polymer coating solution, and 1-hydroxycyclohexyl phenyl ketone was used as a photo initiator for photo polymerization. When the zirconia surface was hydrophilized; the dispersion stability in water was improved and the particle size became smaller. The amine group was confirmed on the surface of A-ZrO2 through ninhydrin reaction, and the change in chemical structure of U-ZrO2 was confirmed through FT-IR ATR spectra. When the hydrophobic reaction took place; the dispersion stability in OPPEA monomer was improved, the particle size became smaller, and the specific surface area did not show a change. In addition, silicon atoms on the zirconia surface after the reaction was confirmed through FE-SEM/EDS. When the zirconia was added to the OPPEA monomer before the surface treatment, the transmittance decreased as compared with the PET film. However, the transmittance of the coating film prepared by adding the hydrophobic treated zirconia was higher than PET film. In addition, the refractive index and luminance were improved by adding zirconia and the coating film containing zirconia surface treated with HMDZ was the most improved, and the thermal stability was slightly improved by the addition of zirconia. As a result, the dispersion stability of the solvent was improved by changing the polarity of the zirconia surface and the polymer coating solution containing zirconia improved the optical characteristics and thermal stability.
Organic polymers that can be easily processed with high transparent properties have low hardness. In order to enhance these properties, an inorganic material which improve the refractive index and mechanical property is introduced into the polymer coating solution. Inorganic materials like zirconia having thermal stability, durability, mechanical properties, and optical properties was used. These hybrid materials have properties of organic polymers and inorganic materials. In order to produce these hybrid materials, inorganic materials having excellent dispersibility of polar and non-polar solvents should be used. In this study, zirconia having secondary size of 10 ㎛ was used for the application of polymer coating solution. γ-aminopropyltrimethoxysilane (APS) and γ-ureidopropyltrimethoxysilane (UPS) having hydrophilic functional groups was used as silane coupling agent of surface modifiers. also, trimethylchlorosilane (TMCS) and hexamethyldisilazane (HMDZ) having hydrophobic functional groups were used as silane of surface modifiers. Also, o-phenylphenoxyethyl acrylate (OPPEA) was used as a monomer for the polymer coating solution, and 1-hydroxycyclohexyl phenyl ketone was used as a photo initiator for photo polymerization. When the zirconia surface was hydrophilized; the dispersion stability in water was improved and the particle size became smaller. The amine group was confirmed on the surface of A-ZrO2 through ninhydrin reaction, and the change in chemical structure of U-ZrO2 was confirmed through FT-IR ATR spectra. When the hydrophobic reaction took place; the dispersion stability in OPPEA monomer was improved, the particle size became smaller, and the specific surface area did not show a change. In addition, silicon atoms on the zirconia surface after the reaction was confirmed through FE-SEM/EDS. When the zirconia was added to the OPPEA monomer before the surface treatment, the transmittance decreased as compared with the PET film. However, the transmittance of the coating film prepared by adding the hydrophobic treated zirconia was higher than PET film. In addition, the refractive index and luminance were improved by adding zirconia and the coating film containing zirconia surface treated with HMDZ was the most improved, and the thermal stability was slightly improved by the addition of zirconia. As a result, the dispersion stability of the solvent was improved by changing the polarity of the zirconia surface and the polymer coating solution containing zirconia improved the optical characteristics and thermal stability.
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