Silicone wear base elastomeric foam
    1.
    发明授权
    Silicone wear base elastomeric foam 失效
    有机硅基弹性体泡沫

    公开(公告)号:US4572917A

    公开(公告)日:1986-02-25

    申请号:US665224

    申请日:1984-10-26

    IPC分类号: C08J9/00 C08J9/30

    摘要: A method of manufacturing a fiber reinforced silicone foam is described. An aqueous silicone emulsion that cures upon drying at ambient temperature to an elastomeric film is combined with inorganic fibers having a diameter of less than 25 micrometers and a length of less than 10 mm to form a mixture. Air is dispersed through the mixture to form a stable froth. Removing the water from the stable froth yields an open-cell foam having cell walls comprising a thin layer of silicone elastomer reinforced with fibers. If electrically conductive fibers are used, the foam can be electrically conductive.

    摘要翻译: 描述了一种制造纤维增强硅氧烷泡沫的方法。 将在环境温度下干燥固化到弹性体膜上的固化的水性硅氧烷乳液与直径小于25微米且长度小于10mm的无机纤维组合以形成混合物。 空气通过混合物分散形成稳定的泡沫。 从稳定的泡沫中去除水,产生具有细胞壁的开孔泡沫,其具有由纤维增强的硅氧烷弹性体薄层。 如果使用导电纤维,泡沫可以是导电的。

    Electrically conductive elastomers from emulsions
    2.
    发明授权
    Electrically conductive elastomers from emulsions 失效
    来自乳液的导电弹性体

    公开(公告)号:US4547312A

    公开(公告)日:1985-10-15

    申请号:US645985

    申请日:1984-08-31

    CPC分类号: H01B1/22 C08K9/02

    摘要: A composition which provides an elastomeric, electrically conductive product upon removal of the water at ambient conditions is described. The composition comprises an emulsion (A) having a dispersed phase of elastomer and a continuous phase of water containing a material selected from the group comprising colloidal silica, alkali metal silicates, and organosilicates, and (B) electrically conductive, metal coated spheres having a diameter of from 5 to 105 micrometers. Because the dispersed particles of elastomer are crosslinked before the metal coated spheres are added, when the water is removed from the emulsion, the metal coated spheres and the dispersed crosslinked elastomer are found in a continuous polar phase. The cured elastomer, having a surface resistivity of less than 2 ohms per square on at least one surface is particularly useful in producing an efficient shield for electromagnetic radiation in the radio and television frequencies.

    摘要翻译: 描述了在环境条件下去除水时提供弹性体导电产品的组合物。 该组合物包含具有弹性体分散相的乳液(A)和含有选自包括胶体二氧化硅,碱金属硅酸盐和有机硅酸盐的材料的水的连续相,和(B)导电的金属涂覆的球体,其具有 直径为5至105微米。 因为在添加金属涂覆的球体之前,分散的弹性体颗粒是交联的,所以当从乳液中除去水时,发现金属涂覆的球体和分散的交联弹性体处于连续的极性相。 在至少一个表面上具有小于2欧姆/平方的表面电阻率的固化弹性体在产生无线电和电视频率中的电磁辐射的有效屏蔽方面特别有用。

    Conductive elastomers from electrically conductive fibers in silicone
emulsion
    3.
    发明授权
    Conductive elastomers from electrically conductive fibers in silicone emulsion 失效
    来自导电纤维的导电弹性体在硅氧烷乳液中

    公开(公告)号:US4545914A

    公开(公告)日:1985-10-08

    申请号:US645986

    申请日:1984-08-31

    CPC分类号: H05K9/009 C08K7/04 H01B1/22

    摘要: A composition which provides an electrically conductive product upon removal of the water at ambient conditions is described. The composition comprises a dispersed phase of elastomer and a continuous phase of water containing a material selected from the group comprising colloidal silica, alkali metal silicates, and organosilicates. Also present in the continuous phase is greater than 10 parts by weight of electrically conductive particles in the form of fibers having a diameter of less than 25 micrometers and a length of less than 10 millimeters with the ratio of length to diameter of greater than 10:1. Upon drying, the emulsion yields an electrically conductive elastic product having elastomer particles and electrically conductive fibers dispersed in a solid polar continuous phase. The electrically conductive product is particularly useful as an efficient shield for electromagnetic radiation in the radio and television frequencies.

    摘要翻译: 描述了在环境条件下去除水时提供导电产品的组合物。 该组合物包含弹性体的分散相和含有选自包含胶体二氧化硅,碱金属硅酸盐和有机硅酸盐的材料的水的连续相。 在连续相中也存在大于10重量份的直径小于25微米的纤维形式的导电颗粒和长度小于10毫米的长度与直径之比大于10的导电颗粒: 1。 干燥后,乳液产生具有分散在固体极性连续相中的弹性体颗粒和导电纤维的导电弹性体。 导电产品在无线电和电视频率中作为电磁辐射的有效屏蔽是特别有用的。

    Solid gel dispensers for achieving controlled release of volatile liquid
materials and method for preparing same
    8.
    发明授权
    Solid gel dispensers for achieving controlled release of volatile liquid materials and method for preparing same 失效
    用于实现挥发性液体材料的控制释放的固体凝胶分配器及其制备方法

    公开(公告)号:US4891388A

    公开(公告)日:1990-01-02

    申请号:US366119

    申请日:1989-06-14

    IPC分类号: A61L9/04 C08J3/00 C08J3/03

    摘要: Aesthetically attractive, free standing dispensers for the controlled release of volatile liquid materials such as perfumes and fragrances into the atmosphere are prepared by (1) forming a first solution by heating a mixture comprising polyvinyl alcohol and water and/or dimethyl sulfoxide under atmospheric pressure, (2) adding a second solution comprising a volatile liquid material and a monohydric alcohol in a solvent that is miscible with the first solution under conditions that avoid precipitation of polyvinyl alcohol, and then (3) cooling the resultant solution to below room temperature to form a gel in the shape of the final dispenser. The exterior surfaces of the dispenser remainds dry to the touch throughout its useful life.

    摘要翻译: 通过(1)通过在大气压下加热包含聚乙烯醇和水和/或二甲基亚砜的混合物形成第一溶液来制备用于将挥发性液体材料如香料和香料控制释放到大气中的美观吸引力的独立分配器, (2)在避免聚乙烯醇沉淀的条件下,在与第一溶液混溶的溶剂中添加包含挥发性液体材料和一元醇的第二溶液,然后(3)将所得溶液冷却至室温以形成 最终分配器形状的凝胶。 分配器的外表面在其使用寿命内保持干燥。