Polystyrene foam containing a modifier-free nanoclay and having improved fire protection performance
    1.
    发明授权
    Polystyrene foam containing a modifier-free nanoclay and having improved fire protection performance 有权
    含有不含改性剂的纳米粘土并具有改进的防火性能的聚苯乙烯泡沫

    公开(公告)号:US09187608B2

    公开(公告)日:2015-11-17

    申请号:US11221522

    申请日:2005-09-08

    摘要: Polymer extruded or expanded foams that contain modifier-free nanoclays are provided. The addition of modifier-free nano-clays to extruded or expanded foam products improves the thermal properties, mechanical properties, and fire performance properties. Water or a water-containing compound is used as a carrier for the modifier-free nanoclays. The final foamed products may be utilized in building application such as foamed insulation products and in underground applications such as highway insulation. A preferred modifier-free nanoclay is Na+MMT. Modifier-free nanoclay particles may be injected into a polymer during an extrusion foaming process. In another embodiment of the invention, polymer beads containing water/nanoclay particles are formed using inverse emulsion/suspension polymerizations and expanded or extruded into a foamed product. In a further embodiment, a modifier-free nanoclay particle is encapsulated in a super-absorbent material, which may be used in an expanding or extruding process.

    摘要翻译: 提供了含有不含改性剂的纳米粘土的聚合物挤压或膨胀泡沫。 向挤出或膨胀的泡沫产品中加入无改性剂的纳米粘土改善了热性能,机械性能和防火性能。 使用水或含水化合物作为不含改性剂的纳米粘土的载体。 最终的发泡产品可用于建筑应用,例如泡沫绝热产品和地下应用如公路绝缘。 优选的不含修饰剂的纳米粘土是Na + MMT。 在挤出发泡过程中,可以将无修饰剂的纳米粘土颗粒注入聚合物中。 在本发明的另一个实施方案中,使用反相乳液/悬浮聚合形成含有水/纳米粘土颗粒的聚合物珠,并膨胀或挤出成发泡产品。 在另一个实施方案中,将不含改性剂的纳米粘土颗粒包封在超吸收材料中,其可用于膨胀或挤出过程。

    Reinforced nancomposites and method of producing the same
    2.
    发明授权
    Reinforced nancomposites and method of producing the same 有权
    增强纳米复合材料及其制造方法

    公开(公告)号:US09193837B1

    公开(公告)日:2015-11-24

    申请号:US13430491

    申请日:2012-03-26

    摘要: A composite material having polymeric resin with disperse phases of reinforcing fibers and nanoparticle materials and its manufacture is disclosed herein. The nanoparticles may be bound together and added to the polymeric resin as microscale aggregations, and then unbound to create a disperse phase of nanoparticles in the resin. In other embodiments, the nanoparticles may be bound to a substrate, such as long fibers, and added to a polymeric resin. The nanoparticles are then unbound from the substrate and dispersed throughout the polymeric resin. The polymeric resin may have multiple components where one component may control the dispersion of the nanoparticles.

    摘要翻译: 具有聚合物树脂的复合材料,其具有分散相的增强纤维和纳米颗粒材料及其制造。 纳米颗粒可以结合在一起,并以微量聚集体形式加入到聚合物树脂中,然后未结合以在树脂中产生纳米颗粒的分散相。 在其他实施方案中,纳米颗粒可以结合到基底,例如长纤维上,并加入到聚合物树脂中。 然后,纳米颗粒从基材未结合并分散在整个聚合物树脂中。 聚合物树脂可以具有多种组分,其中一种组分可以控制纳米颗粒的分散。

    Method of preparing a composite with disperse long fibers and nanoparticles
    3.
    发明授权
    Method of preparing a composite with disperse long fibers and nanoparticles 有权
    用分散长纤维和纳米颗粒制备复合材料的方法

    公开(公告)号:US08143337B1

    公开(公告)日:2012-03-27

    申请号:US11550575

    申请日:2006-10-18

    IPC分类号: C08K3/34

    摘要: A composite material having polymeric resin with disperse phases of reinforcing fibers and nanoparticle materials and its manufacture is disclosed herein. The nanoparticles may be bound together and added to the polymeric resin as microscale aggregations, and then unbound to create a disperse phase of nanoparticles in the resin. In other embodiments, the nanoparticles may be bound to a substrate, such as long fibers, and added to a polymeric resin. The nanoparticles are then unbound from the substrate and dispersed throughout the polymeric resin. The polymeric resin may have multiple components where one component may control the dispersion of the nanoparticles.

    摘要翻译: 具有聚合物树脂的复合材料,其具有分散相的增强纤维和纳米颗粒材料及其制造。 纳米颗粒可以结合在一起,并以微量聚集体形式加入到聚合物树脂中,然后未结合以在树脂中产生纳米颗粒的分散相。 在其他实施方案中,纳米颗粒可以结合到基底,例如长纤维上,并加入到聚合物树脂中。 然后,纳米颗粒从基材未结合并分散在整个聚合物树脂中。 聚合物树脂可以具有多种组分,其中一种组分可以控制纳米颗粒的分散。

    Polymer nanocomposite foams
    5.
    发明授权
    Polymer nanocomposite foams 有权
    聚合物纳米复合泡沫

    公开(公告)号:US07026365B2

    公开(公告)日:2006-04-11

    申请号:US10849599

    申请日:2004-05-20

    IPC分类号: C08J9/35

    摘要: Nano-sized particles such as nano-clays can be mixed with polymers through either melt compounding or in-situ polymerization. By modifying the particle surface with various surfactants and controlling processing conditions, we are able to achieve either intercalated (partial dispersion) or exfoliated (full dispersion) nano-clay distribution in polymers with the clay content up to 35% by weight. When a blowing agent is injected into the nanocomposite in an extruder (a continuous mixer) or a batch mixer, polymeric foam can be produced. Supercritical carbon dioxide, an environmentally friendly, low-cost, non-flammable, chemically benign gas is used as the blowing agent. This process forms a microcellular foam with very high cell density (>109 cells/cc) and small cell size (

    摘要翻译: 纳米尺寸的颗粒例如纳米粘土可以通过熔融混合或原位聚合与聚合物混合。 通过用各种表面活性剂改性颗粒表面和控制加工条件,我们能够实现粘土含量高达35%(重量)的聚合物中的插层(部分分散)或剥离(全分散)纳米粘土分布。 当在挤出机(连续混合器)或间歇式混合器中将发泡剂注入纳米复合材料时,可以生产聚合物泡沫。 作为发泡剂,使用超临界二氧化碳,环境友好,低成本,不易燃,化学良性的气体。 该方法形成具有非常高的细胞密度(> 10 9个细胞/ cc)的微孔泡沫,并且可以通过控制CO 2 2

    Drug and Gene Delivery by Polymer Nanonozzle and Nanotip Cell Patch
    8.
    发明申请
    Drug and Gene Delivery by Polymer Nanonozzle and Nanotip Cell Patch 审中-公开
    药物和基因递送由聚合物Nanonozzle和Nanotip细胞贴片

    公开(公告)号:US20080248575A1

    公开(公告)日:2008-10-09

    申请号:US12090958

    申请日:2006-10-20

    IPC分类号: C12N15/87 B29C67/24 C12N5/06

    CPC分类号: C12N15/87

    摘要: Delivery of drugs or genes to individual cells is achieved on a nanoscale using electroporation techniques. In one method, a flow-through bioreactor having an inlet and an outlet connected by a flow chamber and a nanoporous membrane positioned in the flow chamber is used. Cells to be electroporated are flowed from the inlet to the outlet, a quantum of molecules of the at least one drug or gene in a fluid medium in the flow chamber. An electrical field applied in the flow chamber provides momentum to the molecules in the nanopores, resulting in delivery of the molecules into the plurality of cells.

    摘要翻译: 使用电穿孔技术在纳米尺度上实现将药物或基因递送至个体细胞。 在一种方法中,使用具有通过流动室连接的入口和出口以及位于流动室中的纳米孔膜的流通式生物反应器。 要电穿孔的细胞从入口到出口流动,流动室中的流体介质中的至少一种药物或基因的分子的量子。 施加在流动室中的电场为纳米孔中的分子提供动量,导致分子输送到多个细胞中。

    Self-folding polymer microparticles
    9.
    发明授权
    Self-folding polymer microparticles 有权
    自折式聚合物微粒

    公开(公告)号:US07364675B2

    公开(公告)日:2008-04-29

    申请号:US10700715

    申请日:2003-11-04

    IPC分类号: B29C41/00 B29C39/36

    摘要: A method for forming three-dimensional polymeric particulate microstructures through self-folding of thin-film microparticles. Self-folding of two-dimensional polymeric precursors produces various three-dimensional particulate microstructures. Dumpling-like microstructures with oil cores and polymer coats are prepared by an interfacial-tension driven self-folding method. Roll-like and bowl-shaped hydrogel microstructures are fabricated by self-folding induced by differential volume shrinkage. Curled microstructures are produced by self-folding that is the result of a two-polymer or bilayer method wherein one of the polymers is a volume changeable polymer.

    摘要翻译: 通过薄膜微粒的自折叠形成三维聚合物微结构的方法。 二维聚合物前体的自折叠产生各种三维微粒。 通过界面张力驱动的自折叠方法制备具有油芯和聚合物涂层的饺子状微结构。 通过由不同体积收缩引起的自折叠制造卷状和碗状水凝胶微观结构。 卷曲的微观结构是通过双折射聚合物或双层方法的自折叠产生的,其中一种聚合物是体积可变的聚合物。

    Polymer nanocomposite foams
    10.
    发明授权
    Polymer nanocomposite foams 有权
    聚合物纳米复合泡沫

    公开(公告)号:US06759446B2

    公开(公告)日:2004-07-06

    申请号:US10137037

    申请日:2002-05-02

    IPC分类号: C08J935

    摘要: Nano-sized particles such as nano-clays can be mixed with polymers through either melt compounding or in-situ polymerization. By modifying the particle surface with various surfactants and controlling processing conditions, we are able to achieve either intercalated (partial dispersion) or exfoliated (full dispersion) nano-clay distribution in polymers with the clay content up to 35% by weight. When a blowing agent is injected into the nanocomposite in an extruder (a continuous mixer) or a batch mixer, polymeric foam can be produced. Supercritical carbon dioxide, an environmentally friendly, low-cost, non-flammable, chemically benign gas is used as the blowing agent. This process forms a microcellular foam with very high cell density (>109 cells/cc) and small cell size (

    摘要翻译: 纳米尺寸的颗粒例如纳米粘土可以通过熔融混合或原位聚合与聚合物混合。 通过用各种表面活性剂改性颗粒表面和控制加工条件,我们能够实现粘土含量高达35%(重量)的聚合物中的插层(部分分散)或剥离(全分散)纳米粘土分布。 当在挤出机(连续混合器)或间歇式混合器中将发泡剂注入纳米复合材料时,可以生产聚合物泡沫。 作为发泡剂,使用超临界二氧化碳,环境友好,低成本,不易燃,化学良性的气体。 该方法形成了具有非常高的细胞密度(> 10 9个细胞/ cc)的微孔泡沫,并且可以通过控制CO 2含量,熔体和模头温度以及压降速率来实现小单元尺寸(<5微米)。