DISPERSION COLLOÏDALE D'OXYDE D'ALUMINE
    7.
    发明公开
    DISPERSION COLLOÏDALE D'OXYDE D'ALUMINE 有权
    DISPERSIONCOLLOÏDALED'OXYDE D'ALUMINE

    公开(公告)号:EP2507337A1

    公开(公告)日:2012-10-10

    申请号:EP10803593.2

    申请日:2010-11-30

    IPC分类号: C09K5/10 C01F7/02 G21C15/28

    摘要: The invention relates to a heat-transporting fluid and to the use thereof. The heat-transporting fluid of the invention is formed of an aqueous colloidal sol including water and up to 58.8 wt%, relative to the total fluid weight, in α-Al
    2 O
    3 particles, the thickness of which is the smallest dimension and less than or equal to 30 nm. 90% to 95% of said α-Al
    2 O
    3 particles have a size less than or equal to 210 nm, among which 50% have a size less than or equal to 160 nm. The invention is of use in the field of cooling, in particular nuclear reactor backup cooling.

    摘要翻译: 本发明涉及一种传热流体及其用途。 本发明的传热流体由含水胶体溶胶形成,并且在α-Al 2 O 3颗粒中,相对于总流体重量最高达58.8重量%,其中α-Al 2 O 3颗粒的厚度是最小尺寸且小于 或等于30nm。 所述α-Al 2 O 3颗粒的90%至95%具有小于或等于210nm的尺寸,其中50%具有小于或等于160nm的尺寸。 本发明用于冷却领域,特别是核反应堆后备冷却。

    NANOPARTICULES AUTODISPERSANTES
    9.
    发明公开
    NANOPARTICULES AUTODISPERSANTES 审中-公开
    SELBSTDISPERGIERENDE NANOPARTIKEL

    公开(公告)号:EP2707437A1

    公开(公告)日:2014-03-19

    申请号:EP12722896.3

    申请日:2012-05-04

    摘要: The invention relates to a process for manufacturing nanoparticles that are self-dispersing in water. It also relates to the self-dispersing nanoparticles obtained by the process of the invention and also a process for manufacturing a heat-transfer fluid containing the nanoparticles according to the invention or obtained by the process of the invention. The process of the invention comprises the following steps: a) optionally, manufacture of an aqueous dispersion of nanoparticles chosen from the nanoparticles of alumina (Al
    2 O
    3 ), of zinc oxide (ZnO), of titanium oxide (TiO
    2 ), of silica (SiO
    2 ) and of beryllium oxide (BeO), b) addition to an aqueous dispersion of nanoparticles chosen from nanoparticles of alumina (Al
    2 O
    3 ), of zinc oxide (ZnO), of titanium oxide (TiO
    2 ), of silica (SiO
    2 ) and of beryllium oxide (BeO), of a water-soluble polymer chosen from polyvinyl alcohols, polyethylene glycols, polyvinylpyrrolidones, polyoxazolines, starches, and mixtures of two or more thereof, and c) thermal quenching of the dispersion obtained in step b), and d) lyophilisation of the quenched dispersion obtained in step c). The invention finds an application in the field of coolants in particular.

    摘要翻译: 本发明涉及一种在水中自分散的纳米颗粒的制造方法。 它还涉及通过本发明的方法获得的自分散纳米颗粒,还涉及制备含有根据本发明的纳米颗粒或通过本发明的方法获得的传热流体的方法。 本发明的方法包括以下步骤:a)任选地制备选自氧化铝(ZnO),氧化钛(TiO 2),氧化硅(SiO 2)的氧化铝(Al 2 O 3),氧化锌(ZnO) 和氧化铍(BeO),b)添加到选自氧化铝(Al 2 O 3),氧化锌(ZnO),氧化钛(TiO 2),二氧化硅(Si 2)和氧化铍( BeO),选自聚乙烯醇,聚乙二醇,聚乙烯吡咯烷酮,聚恶唑啉,淀粉及其两种或多种的混合物的水溶性聚合物,和c)步骤b)中获得的分散体的热淬灭,和d)冻干 在步骤c)中获得的骤冷分散体。 本发明特别适用于冷却剂领域。