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    FIRE-RESISTANT GYPSUM BOARDS AND METHODS OF MAKING THEM
    1.
    发明公开
    FIRE-RESISTANT GYPSUM BOARDS AND METHODS OF MAKING THEM 审中-公开

    公开(公告)号：US20240158299A1

    公开(公告)日：2024-05-16

    申请号：US18511476

    申请日：2023-11-16

    申请人： CertainTeed Gypsum, Inc.

    发明人： Dahlia Amato ,  Remi Lespiat ,  William Reid

    IPC分类号： C04B24/42 ,  B32B13/08 ,  C04B22/10 ,  C04B28/14

    CPC分类号： C04B24/42 ,  B32B13/08 ,  C04B22/10 ,  C04B28/14 ,  C04B2111/0062

    摘要： The present disclosure relates generally to a method of producing a fire-resistant gypsum board comprising a gypsum core, the method comprising providing a calcium sulfate slurry comprising a silicone oil having a hydride content of no more than 0.01 equivalents of Si—H per equivalent of silicon in an amount of 0.5 to 1.5 wt % of the mass of the gypsum core; allowing the calcium sulfate slurry to set; and drying the set gypsum material to provide the gypsum core. The disclosure also relates to a fire-resistant gypsum board comprising a gypsum core that shrinks by less than 6% by volume when heated to 850° C., wherein the gypsum core comprises a silicone oil having a hydride content of no more than 0.01 equivalents of Si—H per equivalent of silicon, present in an amount in the range of 0.05 to 1.5 wt % based on the mass of the gypsum core.