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Hollow polymer microcapsule embedded transparent and heat-insulating film

机译：中空聚合物微胶囊嵌入式透明和绝热膜

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摘要

We herein report a facile and scalable approach to manufacturing optically transparent and heat-insulating films by incorporating hollow poly(methyl methacrylate) microcapsules into a transparent polymeric matrix. The microcapsule was prepared via emulsion polymerization. The size of the microcapsules could be easily controlled from similar to 1 to 3 mu m by varying the polymerization time in a narrow size distribution. The microcapsules were then mixed with a UV-curable transparent Liquid resin and cured by a subsequent Light irradiation. The current approach couLd enhance the thermaL barrier property of the films without a significant reduction in the optical transparency. The solid film possessing 30 wt% microcapsules, for example, exhibited a high visible Light transmittance (similar to 80% as measured by UV-vis spectroscopy) and the thermal conductivity was reduced to 0.06 W mK(-1), corresponding to 46% of the capsule free film. To quantify and verify this result, theoretical models describing a heat transfer in a hollow microsphere composite were used, and the model showed a good agreement with our experimental observations.
机译：我们通过将中空聚（甲基丙烯酸甲酯）微胶囊掺入透明聚合物基质中，我们报告了制造光学透明和绝热膜的容易和可扩展的方法。通过乳液聚合制备微胶囊。通过在窄尺寸分布中改变聚合时间，可以容易地控制微胶囊的尺寸与1至3μm。然后将微胶囊与UV固化透明液体树脂混合并通过随后的光照射固化。目前的方法可以增强薄膜的热阻挡性能，而无需显着降低光学透明度。例如，具有30wt％微胶囊的固体膜表现出高可见光透射率（与UV-Vis光谱测量类似的80％），导热率降至0.06W mk（-1），相当于46％胶囊自由薄膜。为了量化和验证该结果，使用描述中空微球复合材料中的传热的理论模型，并且该模型与我们的实验观察结果良好。

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  • 来源
    《RSC Advances》 |2018年第17期|共7页
  • 作者

    Kim Chae Bin; You Nam-Ho; Goh Munju;

  • 作者单位

    Korea Inst Sci &

    Technol Inst Adv Composite Mat Chudong Ro 92 Wanju Gun 55324 Jeonbuk Do South Korea;

    Korea Inst Sci &

    Technol Inst Adv Composite Mat Chudong Ro 92 Wanju Gun 55324 Jeonbuk Do South Korea;

    Korea Inst Sci &

    Technol Inst Adv Composite Mat Chudong Ro 92 Wanju Gun 55324 Jeonbuk Do South Korea;

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  • 正文语种 eng
  • 中图分类 化学;
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