中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

133 records (took 0.018 seconds)

    Method and Apparatus for Producing a Carbon Based Foam Article Having a Desired Thermal-Conductivity Gradient
    43.
    发明申请
    Method and Apparatus for Producing a Carbon Based Foam Article Having a Desired Thermal-Conductivity Gradient 有权
    用于生产具有期望的热导率梯度的碳基泡沫制品的方法和装置

    公开(公告)号：US20090087373A1

    公开(公告)日：2009-04-02

    申请号：US11862325

    申请日：2007-09-27

    Applicant: James W. Klett ,  Christopher Stan Cameron

    Inventor： James W. Klett ,  Christopher Stan Cameron

    IPC: C01B31/04

    CPC classification number: C04B38/0022 ,  C04B2111/00413 ,  C04B2201/32 ,  Y10T428/30 ,  C04B35/52 ,  C04B35/522

    Abstract: A carbon based foam article is made by heating the surface of a carbon foam block to a temperature above its graphitizing temperature, which is the temperature sufficient to graphitize the carbon foam. In one embodiment, the surface is heated with infrared pulses until heat is transferred from the surface into the core of the foam article such that the graphitizing temperature penetrates into the core to a desired depth below the surface. The graphitizing temperature is maintained for a time sufficient to substantially entirely graphitize the portion of the foam article from the surface to the desired depth below the surface. Thus, the foam article is an integral monolithic material that has a desired conductivity gradient with a relatively high thermal conductivity in the portion of the core that was graphitized and a relatively low thermal conductivity in the remaining portion of the foam article.

    Abstract translation: 通过将碳泡沫块的表面加热到高于其石墨化温度的温度来制造碳基泡沫制品，该温度是足以使碳泡沫石墨化的温度。 在一个实施例中，用红外脉冲加热表面，直到热量从表面转移到泡沫制品的芯中，使得石墨化温度渗入芯中至表面下方的期望深度。 石墨化温度保持足以使泡沫制品的部分从表面到表面下方的所需深度基本上完全石墨化的时间。 因此，泡沫制品是一体的整体材料，其具有期望的电导率梯度，在芯的部分中具有相对较高的导热性，并且在泡沫制品的剩余部分中具有相对较低的导热性。

    Pitch-based carbon foam and composites and use thereof
    46.
    发明申请
    Pitch-based carbon foam and composites and use thereof 有权
    沥青基碳泡沫及其复合材料及其用途

    公开(公告)号：US20020141932A1

    公开(公告)日：2002-10-03

    申请号：US10059648

    申请日：2002-01-29

    Inventor： James W. Klett ,  Timothy D. Burchell ,  Ashok Choudhury

    IPC: C01B031/02

    CPC classification number: F28F21/02 ,  C01B32/00 ,  C04B38/00 ,  C04B2111/00189 ,  C04B2111/94 ,  C04B2201/32 ,  F28D5/02 ,  F28D20/023 ,  F28F13/187 ,  Y02E60/145 ,  C04B35/522 ,  C04B38/0022 ,  C04B38/0051 ,  C04B38/0054 ,  C04B38/0058 ,  C04B2103/0071 ,  C04B35/52 ,  C04B40/0259 ,  C04B40/0263

    Abstract: A thermally conductive carbon foam is provided, normally having a thermal conductivity of at least 40 W/mnullK. The carbon foam usually has a specific thermal conductivity, defined as the thermal conductivity divided by the density, of at least about 75 Wnullcm3/mnullnull Knullgm. The foam also has a high specific surface area, typically at least about 6,000 m2/m3. The foam is characterized by an x-ray diffraction pattern having nulldoubletnull 100 and 101 peaks characterized by a relative peak split factor no greater than about 0.470. The foam is graphitic and exhibits substantially isotropic thermal conductivity. The foam comprises substantially ellipsoidal pores and the mean pore diameter of such pores is preferably no greater than about 340 microns. Other materials, such as phase change materials, can be impregnated in the pores in order to impart beneficial thermal properties to the foam. Heat exchange devices and evaporatively cooled heat sinks utilizing the foams are also disclosed.

    Abstract translation: 提供导热碳泡沫，通常具有至少40W / m·K的热导率。 碳泡沫通常具有至少约75W·cm 3 / m·°K·g·m的比热导率（定义为热导率除以密度）。 泡沫也具有高的比表面积，通常至少约为6,000m 2 / m 3。 泡沫的特征在于具有“双峰”100和101的X射线衍射图，其特征在于相对峰分裂系数不大于约0.470。 泡沫是石墨，并表现出基本上各向同性的热导率。 泡沫包括基本上椭圆形的孔，并且这些孔的平均孔径优选不大于约340微米。 可以将诸如相变材料的其它材料浸渍在孔中，以赋予泡沫有利的热性能。 还公开了使用泡沫的热交换装置和蒸发冷却的散热器。

    Cement based heat insulator, method of making same and structure having same
    47.
    发明授权
    Cement based heat insulator, method of making same and structure having same 失效
    水泥基热绝缘子，制作方法和结构相同

    公开(公告)号：US5308891A

    公开(公告)日：1994-05-03

    申请号：US117876

    申请日：1993-09-07

    Applicant: Yukuo Shinozaki

    Inventor： Yukuo Shinozaki

    IPC: C04B28/02 ,  C04B28/04 ,  C08J9/32

    CPC classification number: C04B28/02 ,  C04B28/04 ,  C04B2111/00482 ,  C04B2111/00577 ,  C04B2111/28 ,  C04B2201/32

    Abstract: This invention relates to a heat insulator and a structure using the heat insulator and aims to provide a heat insulator which can be subject to a dry application using the heat insulator in the molded board or a wet application, having characteristics similar to those of a conventional inorganic heat insulator and a high strength which has not been provided before and to provide a structure using the above heat insulator. The heat insulator of this invention is prepared by mixing 3 to 50 parts by weight of synthetic resin emulsion in solid content equivalency, 1 to 20 parts by weight of organic microballoon, 0.3 to 5 parts by weight of carbon fiber and 10 to 200 parts by weight of inorganic microballoon with 100 parts by weight of cement. And the heat insulator of this invention is prepared by mixing 3 to 50 parts by weight of synthetic resin emulsion in solid content equivalency, 1 to 20 parts by weight of organic microballoon and 0.3 to 5 parts by weight of carbon fiber with 100 parts by weight of cement.

    Abstract translation: 本发明涉及一种隔热材料和使用该隔热材料的结构，其目的在于提供一种隔热材料，该隔热材料可以使用模制基板中的隔热材料或湿法应用进行干式施工，其特征与常规的类似 无机隔热材料和以前没有提供的高强度，并提供使用上述隔热材料的结构。 本发明的隔热材料是将3〜50重量份的固体成分当量的合成树脂乳液，1〜20重量份的有机微球，0.3〜5重量份的碳纤维和10〜200重量份的碳纤维 无机微球重量为100重量份的水泥。 本发明的隔热材料通过将3〜50重量份固体成分当量的合成树脂乳液，1〜20重量份的有机微球和0.3〜5重量份的碳纤维与100重量份 的水泥。

Patent Agency Ranking