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    • 8. 发明申请
    • Polymer nanocomposites and methods of preparation
    • 聚合物纳米复合材料及其制备方法
    • US20080281030A1
    • 2008-11-13
    • US11437768
    • 2006-05-22
    • Jeffrey L. ConroyJoseph W. PichePaul J. GlatkowskiDavid H. Landis
    • Jeffrey L. ConroyJoseph W. PichePaul J. GlatkowskiDavid H. Landis
    • C08K3/34C08L79/00C08L71/12
    • C08F2/44C08K3/34Y10T428/2998
    • High-use temperature, lightweight polymer/inorganic nanocomposite materials are described having enhanced thermal stability and performance characteristics. These materials are made possible by new methods for synthesizing composite materials that enhance the thermal stability of the nanocomposite systems from 100-150° C. to over 450° C. These materials and techniques for their formation are enabled at least in part by the use of polar organic phthalonitrile monomers and oligomers that can exfoliate layered phyllosilicates, such as smectite clays, in percentages greater than 10% inorganic by weight. This approach offers a solvent-free direct melt intercalation technique that greatly reduces the cost of processing nanocomposites. Additionally, the use of unmodified phyllosilicates overcomes temperature limitations of prior art, which uses organically-modified layered silicates. The new technology provides hitherto unobtainable thermal stability and performance characteristics, and has numerous applications in the automotive, aerospace, electronic and marine industries.
    • 描述了具有增强的热稳定性和性能特征的高使用温度的轻质聚合物/无机纳米复合材料。 这些材料可以通过用于合成复合材料的新方法成为可能,其将增强纳米复合材料体系的热稳定性从100-150℃提高到450℃以上。这些材料和技术用于其形成至少部分地通过使用 的极性有机邻苯二甲腈单体和可以以大于10重量%无机重量百分比的百分比剥落层状页硅酸盐如蒙脱石粘土的低聚物。 这种方法提供无溶剂的直接熔融插层技术,大大降低了加工纳米复合材料的成本。 另外,未改性页硅酸盐的使用克服了使用有机改性层状硅酸盐的现有技术的温度限制。 新技术提供了迄今为止无法获得的热稳定性和性能特征,并在汽车,航空航天,电子和海洋行业拥有众多应用。
    • 10. 发明授权
    • Security aspects of multiexponential decays
    • 多指标衰退的安全方面
    • US09046486B2
    • 2015-06-02
    • US13534798
    • 2012-06-27
    • Paul A. CarrJeffrey L. ConroyOlusola O. Soyemi
    • Paul A. CarrJeffrey L. ConroyOlusola O. Soyemi
    • G01N21/64
    • G01N21/6428G01N21/6408G01N21/6458G01N2021/6439
    • At least two luminescent materials are intermingled within a security feature. The materials are selected from among a larger set of luminescent materials each having a different individual exponential decay characteristic (decay constant and initial amplitude response to the degree of excitation) for photo-luminescent emission from the respective material following excitation. The ratio of the decay constants for any two materials is greater than or equal to about 1.5. The selected materials are mixed in one of a plurality of predetermined ratios. The combined emissions from the intermingled materials appear, to an unsophisticated measuring device, to have a single exponential decay constant. Based on measurements for the decay of the combined emissions following excitation, estimates of the individual decay constants and associated initial emission amplitudes allow decoding of the particular combination of materials and/or their ratios to validate the security feature, authenticating the article.
    • 至少两种发光材料混合在安全特征内。 这些材料选自对于来自激发后的各材料的光致发光的各种具有不同的指数衰减特性(衰减常数和激发程度的初始振幅响应)的较大组的发光材料。 任何两种材料的衰变常数之比大于或等于约1.5。 所选择的材料以多个预定比率之一混合。 来自混合材料的组合发射出现在不复杂的测量装置上,具有单个指数衰减常数。 基于对激发后的组合发射的衰减的测量,单个衰减常数和相关联的初始发射幅度的估计允许对材料的特定组合和/或其比率进行解码以验证安全特征,认证该文章。