公开(公告)号：US11046832B2

公开(公告)日：2021-06-29

申请号：US16567295

申请日：2019-09-11

Applicant: Xiamen University

Inventor： Lizong Dai ,  Chao Liu ,  Guorong Chen ,  Jiamei Huang ,  Zhongyu Li ,  Conghui Yuan ,  Yiting Xu ,  Birong Zeng ,  Wei′ang Luo

IPC: C08K3/36 ,  C08K9/06 ,  C08K9/08 ,  C08K9/10 ,  C08L63/00

Abstract: The present disclosure discloses a method of manufacturing silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen, which relates to organic/inorganic hybrid nanoparticles, dispersing SiO2 in an organic solvent, then adding THPS, stirring, and finally adding p-phenylenediamine, reacting, centrifuging, washing, and drying to obtain silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen. The silicon dioxide nanoparticles modified by the polymer containing phosphorus and nitrogen have effects in flame retardancy, strengthening effect of polymer matrixes, and are expected to be widely used in the halogen-free synergistic flame retardancy of polymer materials.

公开(公告)号：US11865196B2

公开(公告)日：2024-01-09

申请号：US18339195

申请日：2023-06-21

Applicant: Xiamen University ,  Shanghai University

Inventor： Gang Liu ,  Xiao Xu ,  Hongjuan Ma ,  Zhenwen Zhao ,  Hu Chen ,  Pan He ,  Chao Liu ,  Chengchao Chu ,  Dong Li

IPC: A61P35/00 ,  A61K51/12 ,  C08F257/02 ,  C08K3/06 ,  A61N5/10

CPC classification number: A61K51/1251 ,  A61N5/1002 ,  A61P35/00 ,  C08F257/02 ,  C08K3/06 ,  A61N2005/1021

Abstract: An engineered radioactive polymeric microsphere, and a preparation and application thereof. The preparation method includes: adding a styrene monomer and a disperser and/or a crosslinker into a medium, followed by feeding of nitrogen or helium and stirring to obtain a first reaction mixture; heating the first reaction mixture, and adding an initiator, followed by reaction under stirring at a constant temperature to obtain a second reaction mixture; subjecting the second reaction mixture to washing with ethanol and water, and vacuum drying to obtain a crude polymeric microsphere; subjecting the crude polymeric microsphere to radiation-induced graft polymerization with a functional monomer to obtain the functionalized polymeric microsphere; and exposing the functionalized polymeric microsphere to a radionuclide to prepare the engineered radioactive polymeric microsphere.