• Title/Summary/Keyword: 세라믹 표면

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Change of Surface Temperature in Woodceramics Made from MDF(II) - Effect of Impregnation Rate and Burning Temperature - (MDF로 제조된 우드세라믹의 표면온도 변화(II) - 수지 함침율과 소성온도의 영향 -)

  • Oh, Seung Won;Byeon, Hee Seop
    • Journal of the Korean Wood Science and Technology
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    • v.31 no.1
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    • pp.41-45
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    • 2003

  • In this study, woodceramics were made from MDF with various resin impregnation rate. To investigate the change of surface temperature of woodceramics, the impregnated MDF was burned at the temp. 600, 800, 1,000, 1,200℃. Surface temperature of woodceramics was increased as impregnation rate and burning temperature was increased. The specimen burned at 800℃ was lower than others. Change of temperature under given temperature increased as time passed and it showed more increased in temperature at burning temperature of 1,200℃. Change of surface temperature increased when floor temperature increased and the temperature was 49.2℃ at 70℃ in floor temperature of 1,200℃ specimen. The decent in surface temperature of woodceramics was the fastest decrease at the burning temperature of 800℃ specimen.

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Hydrophobic property of surface glaze of ceramic tiles by copper powder addition (구리 분말 첨가를 통한 도자타일 표면유약의 소수화 특성)

  • Choi, Cheong-Soo;Han, Kyu-Sung;Hwang, Kwang-Taek;Kim, Jin-Ho
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.29 no.5
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    • pp.215-221
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    • 2019

  • Ceramic tiles, which are widely used as interior and exterior materials for construction, have recently been required to have pollution prevention function. In order to remove contaminants, many researches of ceramic tiles with hydrophilic surface property through $TiO_2$ coating and hydrophobic surface property by improving the flow of water droplets have been proceeded. Expecially, it is very important to develop a surface glaze having hydrophobicity through a sintering process above $1000^{\circ}C$ without an additional coating process and the degradation of mechanical properties. In this study, surface glaze with copper powder was applied to manufacture of ceramic tile. Contact angle of ceramic tile according to thickness of surface glaze layer was investigated after the conventional sintering process. The contact angle of the ceramic tile surface without the copper powder was shown to be $25.3^{\circ}$, which is close to hydrophilic surface. However, the contact angle was increased up to $109.8^{\circ}$ when the thickness of surface glaze with the copper powder was $150{\mu}m$. The excellent hydrophobic property of the surface glaze with copper powder was resulted from the cellular structure of copper particles on the glaze surface. In addition, the mechanical properties of the developed hydrophobic ceramic tiles such as bending strength, chemical resistance, abrasion resistance, and frost resistance were well maintained and meet the criteria of 'KS L 1001 Ceramic tile'.

  • https://doi.org/10.6111/JKCGCT.2019.29.5.215 인용 PDF KSCI