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    Supercritical fluid molecular spray thin films and fine powders
    123.
    发明授权
    Supercritical fluid molecular spray thin films and fine powders 失效
    超临界流体分子喷涂薄膜和细粉

    公开(公告)号：US4734451A

    公开(公告)日：1988-03-29

    申请号：US839079

    申请日：1986-03-12

    Applicant: Richard D. Smith

    Inventor： Richard D. Smith

    IPC: B05B7/14 ,  B05D1/02 ,  B01D15/08 ,  B29B9/00 ,  C08K3/34 ,  C08L27/12

    CPC classification number: B05B7/1486 ,  B05D1/025 ,  B05D2401/90

    Abstract: Solid films are deposited, or fine powders formed, by dissolving a solid material into a supercritical fluid solution at an elevated pressure and then rapidly expanding the solution through a short orifice into a region of relatively low pressure. This produces a molecular spray which is directed against a substrate to deposit a solid thin film thereon, or discharged into a collection chamber to collect a fine powder. The solvent is vaporized and pumped away. Solution pressure is varied to determine, together with flow rate, the rate of deposition and to control in part whether a film or powder is produced and the granularity of each. Solution temperature is varied in relation to formation of a two-phase system during expansion to control porosity of the film or powder. A wide variety of film textures and powder shapes are produced of both organic and inorganic compounds. Films are produced with regular textural feature dimensions of 1.0-2.0 .mu.m down to a range of 0.01 to 0.1 .mu.m. Powders are formed in very narrow size distributions, with average sizes in the range of 0.02 to 5 .mu.m.

    Abstract translation: 通过在高压下将固体材料溶解在超临界流体溶液中，然后通过短孔将溶液快速膨胀到相对较低压力的区域中，沉积固体膜或形成细粉末。 这产生分子喷雾，其指向基底以在其上沉积固体薄膜，或者排出到收集室中以收集细粉末。 溶剂蒸发并泵出。 溶液压力变化以与流速一起确定沉积速率并且部分地控制是否产生膜或粉末以及每个的粒度。 相对于膨胀期间两相体系的形成，溶液温度变化以控制膜或粉末的孔隙率。 由有机和无机化合物制成各种薄膜纹理和粉末形状。 生产的膜的规则结构特征尺寸为1.0-2.0μm，范围为0.01至0.1μm。 粉末形成非常窄的尺寸分布，平均尺寸在0.02至5μm的范围内。

    Supercritical fluid molecular spray film deposition and powder formation
    124.
    发明授权
    Supercritical fluid molecular spray film deposition and powder formation 失效
    超临界流体分子喷涂膜沉积和粉末形成

    公开(公告)号：US4582731A

    公开(公告)日：1986-04-15

    申请号：US528723

    申请日：1983-09-01

    Applicant: Richard D. Smith

    Inventor： Richard D. Smith

    IPC: B05B7/14 ,  B05D1/02 ,  C08J3/12 ,  C08J5/18 ,  B05B7/00 ,  B01D15/08 ,  B05C5/00

    CPC classification number: B05B7/1486 ,  B05D1/025 ,  B05D2401/90

    Abstract: Solid films are deposited, or fine powders formed, by dissolving a solid material into a supercritical fluid solution at an elevated pressure and then rapidly expanding the solution through a short orifice into a region of relatively low pressure. This produces a molecular spray which is directed against a substrate to deposit a solid thin film thereon, or discharged into a collection chamber to collect a fine powder. Upon expansion and supersonic interaction with background gases in the low pressure region, any clusters of solvent are broken up and the solvent is vaporized and pumped away. Solute concentration in the solution is varied primarily by varying solution pressure to determine, together with flow rate, the rate of deposition and to control in part whether a film or powder is produced and the granularity of each. Solvent clustering and solute nucleation are controlled by manipulating the rate of expansion of the solution and the pressure of the lower pressure region. Solution and low pressure region temperatures are also controlled.

    Abstract translation: 通过在高压下将固体材料溶解在超临界流体溶液中，然后通过短孔将溶液快速膨胀到相对较低压力的区域中，沉积固体膜或形成细粉末。 这产生分子喷雾，其指向基底以在其上沉积固体薄膜，或者排出到收集室中以收集细粉末。 当在低压区域中与背景气体膨胀和超音速相互作用时，任何溶剂簇被分解并且溶剂蒸发并泵出。 溶液中的溶质浓度主要通过改变溶液压力而变化，以与流速一起确定沉积速率，并且部分地控制是否产生膜或粉末以及每个的粒度。 通过控制溶液的膨胀速率和较低压力区域的压力来控制溶剂聚集和溶质成核。 溶液和低压区温度也受到控制。

    METHOD TO PREPARE SUPERHYDROPHOBIC SURFACES ON SOLID BODIES BY RAPID EXPANSION SOLUTIONS
    130.
    发明申请
    METHOD TO PREPARE SUPERHYDROPHOBIC SURFACES ON SOLID BODIES BY RAPID EXPANSION SOLUTIONS 有权
    通过快速扩张解决方案制备固体超强磁性表面的方法

    公开(公告)号：US20110059307A1

    公开(公告)日：2011-03-10

    申请号：US12667033

    申请日：2008-06-30

    Applicant: Oskar Peter Werner ,  Lars-Erik Rudolf Wågberg ,  Can Quan ,  Charlotta Kristina Turner ,  Jan-Christer Eriksson

    Inventor： Oskar Peter Werner ,  Lars-Erik Rudolf Wågberg ,  Can Quan ,  Charlotta Kristina Turner ,  Jan-Christer Eriksson

    IPC: B32B9/00 ,  B05D1/02 ,  C09D1/00 ,  B32B29/00 ,  B32B17/06 ,  B32B15/04 ,  B32B21/04 ,  C23C16/00 ,  C23C16/458

    CPC classification number: B05D1/025 ,  B05D5/08 ,  B05D2201/00 ,  B05D2202/10 ,  B05D2202/25 ,  B05D2203/20 ,  B05D2203/22 ,  B05D2203/35 ,  B05D2401/32 ,  Y10T428/249921 ,  Y10T428/31678 ,  Y10T428/31971 ,  Y10T428/31989 ,  Y10T428/31993

    Abstract: The present invention refers to a method for preparing a superhydrophobic surface on a solid substrate comprising the steps of (a) providing a solvent in the form of a pressurized fluid in a vessel, wherein the fluid exhibits a decrease in solvency power with decreasing pressure; (b) adding a hydrophobic substance to the solvent as a solute, which substance is soluble with the pressurized fluid and has the ability to crystallize/precipitate after expansion of the fluid, thereby obtaining a solution of the solvent and the solute in the vessel; (c) having at least one orifice opened on the vessel, thereby causing the pressurized solution to flow out of the vessel and depressurize in ambient air or in an expansion chamber having a lower pressure than within the vessel, the solute thereby forming particles; and (d) depositing the particles on the substrate in order to obtain a superhydrophobic surface. Hereby, a pressurized fluid which expands rapidly as a result of depressurization is used to prepare the superhydrophobic surface, thereby facilitating the preparation of the surface. Moreover, the invention refers to an arrangement for preparing a superhydrophobic surface on a substrate, a superhydrophobic film prepared by the method of the invention, and a substrate having deposited thereon the superhydrophobic firm.

    Abstract translation: 本发明涉及一种在固体基质上制备超疏水表面的方法，包括以下步骤：（a）在容器中提供加压流体形式的溶剂，其中流体随着压力降低而具有降低的溶解能力; （b）将溶剂中的疏水性物质作为溶质添加，所述物质可与加压流体一起溶解，并具有在流体膨胀后结晶/沉淀的能力，由此得到溶剂和溶质在容器中的溶液; （c）具有在容器上开口的至少一个孔，从而使加压溶液从容器中流出并在环境空气中或在压力低于容器内的膨胀室中减压，从而形成颗粒; 和（d）将颗粒沉积在基材上以获得超疏水表面。 因此，使用由于减压而迅速膨胀的加压流体来制备超疏水表面，从而有助于表面的制备。 此外，本发明涉及一种用于在基材上制备超疏水表面的装置，通过本发明的方法制备的超疏水薄膜和在其上沉积有超疏水性公司的基材。

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