US 12,384,960 B2
Resin/phosphor composite scintillator, and scintillator array
Takeshi Kuriwada, Tokyo (JP); Takeshi Oomori, Tokyo (JP); and Tomoyuki Kurushima, Tokyo (JP)
Assigned to MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP)
Filed by MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP)
Filed on Sep. 16, 2021, as Appl. No. 17/476,874.
Application 17/476,874 is a continuation of application No. PCT/JP2020/009169, filed on Mar. 4, 2020.
Claims priority of application No. 2019-050585 (JP), filed on Mar. 19, 2019.
Prior Publication US 2022/0002617 A1, Jan. 6, 2022
Int. Cl. C09K 11/02 (2006.01); C09K 11/61 (2006.01); C09K 11/68 (2006.01); C09K 11/77 (2006.01); G01T 1/20 (2006.01)
CPC C09K 11/02 (2013.01) [C09K 11/7771 (2013.01); G01T 1/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A resin-phosphor composite scintillator, comprising:
a resin; and
a phosphor;
wherein:
the scintillator is capable of converting irradiated radiation into visible light;
a brightness retention rate of the scintillator, when measured 24 hours after 38-minute irradiation with an X-ray to a total irradiation dose of 13 kGy at a distance of 40 mm from a radiation source, is 65% or higher;
a Rockwell hardness of the scintillator is 30 HRM or higher;
a content of the resin in the scintillator is not less than 10% by weight;
the resin is a cured product obtained using a cationic polymerization initiator;
the resin comprises at least one selected from the group consisting of a hydrogenated epoxy resin and an epoxy silicone resin; and
a content of the cationic polymerization initiator is 1.5 parts by weight or less with respect to 100 parts by weight of resin.