公开(公告)号：US20230271885A1

公开(公告)日：2023-08-31

申请号：US17998289

申请日：2021-05-27

申请人： YOSHINO GYPSUM CO., LTD.

发明人： Yosuke SATO ,  Daisuke NAITO ,  Natsuki OKAMOTO ,  Masaki SUZUKI ,  Yosaku IKEO ,  Atsumichi KUSHIBE ,  Hajime OKAMOTO ,  Takemi NORIMONO ,  Masanobu ODAGAWA

IPC分类号： C04B28/14 ,  C04B22/00 ,  C04B24/12 ,  C04B24/10 ,  C04B24/26 ,  G21F1/00 ,  G21F3/00

CPC分类号： C04B28/14 ,  C04B22/0013 ,  C04B24/10 ,  C04B24/128 ,  C04B24/2641 ,  G21F1/00 ,  G21F3/00 ,  C04B2111/00629

摘要： A neutron beam shielding gypsum-based building board includes gypsum, a boron-containing material containing boron an amount of which is in a range from 1.0 parts by mass to 120 parts by mass with respect to 100 parts by mass of the gypsum, and a water reducing agent in a range from 0.05 parts by mass to 2.0 parts by mass with respect to 100 parts by mass of the gypsum. The boron-containing material includes one or more kinds selected from calcium borate, boron carbide, boric acid, boron oxide, sodium borate, and calcium boride, and a specific gravity in a dry condition is in a range from 0.65 to 1.6.