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76 条记录 (耗时 0.012 秒)

    Neutron absorbing shield and method for manufacture thereof
    75.
    发明公开
    Neutron absorbing shield and method for manufacture thereof 失效
    中子吸收其生产盾和方法。

    公开(公告)号：EP0003226A1

    公开(公告)日：1979-08-08

    申请号：EP78101687.8

    申请日：1978-12-14

    申请人： THE CARBORUNDUM COMPANY

    发明人： McMurtry, Carl Hewes ,  Naum, Robert Gust ,  Forsyth, Paul Francis

    IPC分类号： G21F1/10 ,  B29D3/02

    CPC分类号： B29C70/88 ,  B29C70/025 ,  G21F1/12

    摘要： A composite, neutron absorbing, coated article, normally flat and thin and of comparatively light weight, suitable for installation in storage racks for spent nuclear fuel and for other neutron absorbing applications, includes a backing member, preferably of flexible material such as woven fiberglass cloth, a synthetic organic polymeric coating or a plurality of such coatings on the backing member, preferably of cured phenolic resin, such as phenol formaldehyde or trimethylolphenol formaldehyde and boron carbide particles held to the backing member by the cured coating or a plurality of such coatings. Also within the invention is a method for the manufacture of the neutron absorbing coated article and the use of such an article. In a preferred method the backing member is first coated on both sides thereof with a filling coating of thermosettable liquid phenolic resin, which is then partially cured to solid state, one side of the backing member is then coated with a mixture of thermosettable liquid resin and finely divided boron carbide particles and the resin is partially cured to solid state, the other side is coated with a similar mixture, larger boron carbide particles are applied to it and the resin is partially cured to solid state, such side of the article is coated with thermosettable liquid phenolic resin, the resin is partially cured to solid state and such resin, including previously applied partially cured resins, is cured to final cross-linked and permanently set form.

    Method for the manufacture of neutron absorbing articles
    76.
    发明公开
    Method for the manufacture of neutron absorbing articles 无效
    一种用于中子吸收元件的制备方法。

    公开(公告)号：EP0002715A1

    公开(公告)日：1979-07-11

    申请号：EP78101639.9

    申请日：1978-12-11

    申请人： Kennecott Corporation

    发明人： Owens, Dean Paul

    IPC分类号： G21F1/10 ,  G21F1/12 ,  C08L61/06

    CPC分类号： G21F1/103 ,  G21F1/12

    摘要： Neutron absorbing articles, such as those in plate form suitable for use in a storage rack for spent nuclear fuel and having such properties as to make them useful in such application for long periods of time, are made by an improved one-step curing method in which a mixture of boron carbide particles, powdered phenolic resin and a minor proportion of a liquid medium which boils at a temperature below 200 C, preferably water, is compacted to desired article form and is cured at an elevated temperature, without simultaneous imposition of pressure in compacting or pressing means, so as to cause bonding of the irreversibly cured phenolic polymer resulting to the boron carbide particles and production of the neutron absorber in desired form. The described method is also employable when a proportion of the boron carbide particles, e.g. 1/10 to 9/10, is replaced by a diluent compound.