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    • 5. 发明申请
    • MOLECULARLY SELF-ASSEMBLING NANOCOMPOSITE BARRIER COATING FOR GAS BARRIER APPLICATIONS AND FLAME RETARDANCY
    • 用于气体阻隔器应用和阻燃性能的分子自组装纳米复合阻挡涂层
    • US20160053133A1
    • 2016-02-25
    • US14811002
    • 2015-07-28
    • Gary W. BeallRay G. Cook
    • Gary W. BeallRay G. Cook
    • C09D171/02C09D139/06A23L1/00C09D129/04
    • C09D171/02A23P20/10A23V2002/00C08K3/346C09D133/02C09D139/06D06M11/79
    • Disclosed is a transparent self-assembling polymer clay nanocomposite coating that is useful in food, drink and electronic packaging as a gas barrier and on textiles and clothing as a flame retardant coating. The coating consists of two main components that include a water dispersible polymer and a sheet like nanoparticle. The polymers are polyvinylpyrrolidone or polyacrylic acid and or co-polymers with pyrrolidone or acrylic acid and the nanoparticles include smectite clays and double metal hydroxides. The coatings can be applied to any substrate. The coatings are applied sequentially with polymer being applied first followed by the nanoparticles. This sequence results in the self-assembly of a highly ordered nanocomposite film that exhibits high barrier properties and flame retardancy. The desired level of gas barrier or flame retardancy desired can be adjusted by the number of bilayers applied. The coating can be applied by ink jet printing, rotogravure printing, doctor knife, dip coating, paint sprayer, or any other method that gives control of layer thickness. The gas barrier performance of 5 bilayers of coatings of this invention exceed that of aluminized mylar yet are transparent.
    • 公开了一种透明的自组装聚合物粘土纳米复合涂层,其可用作食品,饮料和电子封装作为阻气层,以及作为阻燃涂层的纺织品和服装。 该涂层由包括水分散性聚合物和片状纳米颗粒的两个主要组分组成。 聚合物是聚乙烯吡咯烷酮或聚丙烯酸,或与吡咯烷酮或丙烯酸共聚,纳米颗粒包括蒙脱石粘土和双金属氢氧化物。 涂层可以应用于任何基材。 依次涂覆涂层,首先涂覆聚合物,然后加入纳米颗粒。 该序列导致显示出高阻隔性和阻燃性的高度有序的纳米复合膜的自组装。 可以通过所应用的双层数量来调节期望的气体屏障或阻燃性能。 涂层可以通过喷墨印刷,凹版印刷,刮刀,浸涂,喷漆机或任何其他控制层厚度的方法来施加。 本发明的5层双层涂料的气体阻隔性能超过了铝化聚酯薄膜的透气性。