Formation of the Silicate Layers on the Nylon 6 Film by Sol-Gel Method.

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  • ゾル‐ゲル法によるナイロンフィルムへのシリカ薄膜の調製
  • ゾル ゲルホウ ニ ヨル ナイロン フィルム エ ノ シリカ ハクマク ノ チョウセイ

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Silicate layer was prepared on the nylon 6 film by sol-gel method. Effect of reaction conditions on the various properties, such as layer thickness, surface morphology and the water vapor permeation rates were examined. Increasing sol-gel reaction time gives a increasing silicate layer thickness. However because of the roughness of the surface produced due to the 3-dimensional siloxane network formation in sol-gel reaction system occurred at a longer reaction time, the water vapor permeation rate was high. Addition of DMF in sol-gel reaction system controlled the drying of coated film and suppressed the shrinkage of silicate layer resulting in the smooth crack-free layers. When UV was irradiated on the sol-gel reaction system, the surface of the coated film was rather smooth and the coated film gave a fairly high barrier to water vapor, although the thickness of the layer was rather small.

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