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211 条记录 (耗时 0.023 秒)

    Supercritical drying method for silica wet gel blanket
    1.
    发明授权
    Supercritical drying method for silica wet gel blanket 有权

    公开(公告)号：US12060279B2

    公开(公告)日：2024-08-13

    申请号：US17253384

    申请日：2019-11-11

    申请人： LG CHEM, LTD.

    发明人： Kyoung Shil Oh ,  Se Won Baek

    IPC分类号： C01B33/158 ,  B01J13/00 ,  C01B33/141 ,  F26B3/02

    CPC分类号： C01B33/1585 ,  B01J13/0091 ,  C01B33/1417 ,  F26B3/02

    摘要： Provided is a supercritical drying method of a silica wet gel blanket and a method for producing a silica aerogel blanket including the same, the supercritical drying method preventing a salt from being accumulated inside equipment during supercritical drying. By preventing a salt from being accumulated inside equipment during supercritical drying, it is possible to improve the operational stability of the supercritical drying process. In addition, since only a line filter needs to be separated and is easily washed, the time required for washing and the total amount of ammonia wastewater generated therefrom can be reduced, thereby improving efficiency and reducing costs.

    BORON-CONTAINING SILICA DISPERSION, AND METHOD FOR PRODUCING SAME
    3.
    发明公开
    BORON-CONTAINING SILICA DISPERSION, AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：US20240002240A1

    公开(公告)日：2024-01-04

    申请号：US18247010

    申请日：2021-09-21

    申请人： SAKAI CHEMICAL INDUSTRY CO., LTD.

    发明人： Yasuyuki MURAKAMI ,  Satsuki MOTOISHI ,  Hisao KOIZUMI ,  Satoshi KOMORI ,  Hironobu OGATA

    IPC分类号： C01B33/141

    CPC分类号： C01B33/1415 ,  C01P2004/51 ,  C01P2002/01 ,  C01P2004/32 ,  C01P2004/64

    摘要： The present invention provides a boron-containing silica dispersion having better dispersion stability at a high concentration, and higher binding properties between boron and silica than conventional dispersions. The present invention is a boron-containing silica dispersion containing amorphous silica particles containing boron atoms and a dispersion medium; the boron-containing amorphous silica particles having an average particle size of 10 to 100 nm, as determined from 40 particles selected at random in a transmission electron micrograph; the boron-containing silica dispersion having a solids content of 5 to 30 mass %; and the boron-containing silica dispersion having a sedimentation rate of the particles of 4% or less, when the boron-containing silica dispersion is left standing for 1000 hours, and proportions of SiO2 and B2O3 of 90.0 to 99.8 mass % and 0.2 to 10.0 mass %, respectively, in 100 mass % of a total of SiO2 and B2O3, all terms of oxide, when the boron-containing silica dispersion is subjected to ultrafiltration by the following method and dried; washing is performed by sequentially adding pure water in an amount of 6 times the volume of the boron-containing silica dispersion at a flow rate of a liquid fed of 3660 ml/minute using an ultrafiltration membrane with a fraction molecular weight of 13,000.

    Method of Forming and Controlling Morphology of Cracks in Silicon Dioxide Film
    5.
    发明申请
    Method of Forming and Controlling Morphology of Cracks in Silicon Dioxide Film 有权

    公开(公告)号：US20230057014A1

    公开(公告)日：2023-02-23

    申请号：US17406764

    申请日：2021-08-19

    申请人： Zhihong Liu

    发明人： Zhihong Liu

    IPC分类号： B05D3/02 ,  C23C30/00 ,  C01B33/141 ,  C01B33/148 ,  C09D1/00 ,  B05D3/00

    摘要： Methods for forming and controlling morphology cracks in silicon dioxide (SiO2) film comprising: preparing SiO2precursor solution comprising solvent, precursor of SiO2, precursor of metal oxide nanocrystals, water, and acid; coating the solution onto substrate; drying the solution atop the substrate at a temperature between about 20° C. to 100° C. between 1 minute to 24 hours to form SiO2 film having uniformly dispersed metal oxide nanocrystals, wherein shorter drying times yield substantially spherical shaped metal oxide nanocrystals and longer drying times yield rod and disc shaped metal oxide nanocrystals; and thermally treating the SiO2 film between about 60° C. to 500° C. between 1 minute to 24 hours to form cracked mesh SiO2 film, wherein two cracks initiate from rod shaped metal oxide nanocrystals, three to four cracks initiate from spherical shaped metal oxide nanocrystals, and four or more cracks initiate from disc shaped metal oxide nanocrystals. Other embodiments are described and claimed.

    AEROGEL COMPOSITIONS AND METHODS
    7.
    发明申请
    AEROGEL COMPOSITIONS AND METHODS 有权

    公开(公告)号：US20210309527A1

    公开(公告)日：2021-10-07

    申请号：US17223043

    申请日：2021-04-06

    申请人： Aspen Aerogels, Inc.

    发明人： Owen Richard Evans ,  David J. Mihalcik ,  Kathryn Elizabeth DeKrafft ,  Wenting Dong

    IPC分类号： C01B33/158 ,  B01J13/00 ,  C01B33/141 ,  C01B33/159

    摘要： The present disclosure provides an aerogel composition which is intrinsically hydrophobic without surface modification by a hydrophobizing agent, is durable and easy to handle, which has favorable performance in aqueous environments, and which also has favorable combustion and self-heating properties. Also provided is a method of preparing an aerogel composition which is intrinsically hydrophobic without surface modification by a hydrophobizing agent, is durable and easy to handle, which has favorable performance in aqueous environments, and which has favorable combustion and self-heating properties.

    METHOD FOR MANUFACTURING AEROGEL BLANKET
    8.
    发明申请
    METHOD FOR MANUFACTURING AEROGEL BLANKET 有权

    公开(公告)号：US20210155486A1

    公开(公告)日：2021-05-27

    申请号：US17056872

    申请日：2019-11-27

    申请人： LG CHEM, LTD.

    发明人： Tae Gyeong KANG ,  Se Won BAEK

    IPC分类号： C01B33/158 ,  C01B33/141 ,  C01B33/152 ,  B01J13/00

    摘要： A method for manufacturing an aerogel blanket, the method capable of simplifying manufacturing equipment by performing gelation while rotating a reaction vessel, improving manufacturing efficiency by controlling manufacturing time regardless of the thickness of an aerogel blanket and improving thermal conductivity by uniformly forming an aerogel in a substrate for blanket.