人造大理石の黄変と発生要因

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タイトル別名
  • YELLOWING OF THE RECONSTITUTED STONE AND THE OUTBREAK FACTORS
  • ジンゾウ ダイリセキ ノ オウヘン ト ハッセイ ヨウイン

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Organic reconstituted stone is often used as flooring of buildings in countries outside of Japan. As organic reconstituted stone contains polymer resin, it may discolor yellow by ultra-violet light and heat. At some construction sites, organic reconstituted stone became yellow. Authors conducted tests to investigate the causes of yellowing, methods of prevention and possibilities of further yellowing by replicating the process and making chemical analysis. They found out that long-term exposure to water and heat changes its chemical component and leads to the formation of chromophore having a conjugated double bond and auxochrome having a hydroxyl radical.

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