公开(公告)号：US12110638B1

公开(公告)日：2024-10-08

申请号：US18424253

申请日：2024-01-26

申请人： Sichuan University

发明人： Junwen Ren ,  Qiuwanyu Qing ,  Shenli Jia ,  Lihua Zhao ,  Zi Wang ,  Fuli Teng ,  Guoqing Jiang

IPC分类号： D21H27/38 ,  D21F5/18 ,  D21F11/00 ,  D21H13/26 ,  D21H13/38 ,  D21H17/68

CPC分类号： D21H27/38 ,  D21F5/18 ,  D21F11/00 ,  D21H13/26 ,  D21H13/38 ,  D21H17/68

摘要： Disclosed are a corona-resistant N-grade insulation paper for a variable frequency motor and a preparation method thereof. The insulation paper has a sandwich structure, aramid nanofibers and mica nanosheets are taken as a sandwich material of the sandwich structure, aramid nanofibers and silicon carbide nanowires being taken as upper and lower surface layer materials, and three layers of materials are electrostatically sprayed and thermo-compressed to prepare the insulation paper. According to the present disclosure, by introducing mica sheets and the silicon carbide nanowires into the aramid nanofibers, the highly ordered arrangement inside the sandwich structure is realized through electrostatic spraying, which improves the temperature resistance and corona resistance of the insulation paper.

公开(公告)号：US12098263B1

公开(公告)日：2024-09-24

申请号：US18393580

申请日：2023-12-21

申请人： SICHUAN UNIVERSITY

发明人： Junwen Ren ,  Zi Wang ,  Shenli Jia ,  Lihua Zhao ,  Huachao Wei ,  Chao Bian ,  Guoqing Jiang ,  Ruichi Zeng

IPC分类号： C09C1/40 ,  C08K9/10 ,  C09C3/00

CPC分类号： C08K9/10 ,  C09C1/407 ,  C09C3/006 ,  C08K2201/005

摘要： A composite insulating material based on dielectrophoretic force orientation and its preparation method are provided. The method includes: S1, preparing dielectric composite microspheres with a dielectric epoxy resin as a core and a hexagonal boron nitride sheet as a shell; S2, dispersing the hexagonal boron nitride sheet and the dielectric composite microspheres in an organic solvent to obtain a dispersion liquid, and adding an epoxy resin, an epoxy resin curing agent, and an epoxy resin accelerator to the dispersing liquid, and evaporating the organic solvent to obtain a composite substrate; S3, pouring the composite substrate into a container, wherein an upper surface and a lower surface of the container are connected with electrodes, respectively, transferring the container to a vacuum oven, and connecting a power supply of the container to adjust a voltage amplitude and a frequency of the electrodes, conducting dielectrophoretic force orientation on the dielectric composite microspheres in the composite substrate, so as to cause the dielectric composite microspheres to arrange along a direction of electric field; S4, increasing a temperature of the container to cure the composite substrate, cutting off the power supply to the container after curing, and obtaining the composite insulating material.

公开(公告)号：US12065607B1

公开(公告)日：2024-08-20

申请号：US18395733

申请日：2023-12-25

申请人： SICHUAN UNIVERSITY

发明人： Junwen Ren ,  Zi Wang ,  Shenli Jia ,  Lihua Zhao ,  Huachao Wei ,  Lichuan Jia ,  Guoqing Jiang ,  Ruichi Zeng

IPC分类号： C09K5/14 ,  C08J3/205 ,  C08K3/38 ,  C08K9/02 ,  C08K9/04 ,  C09C3/00 ,  C09C3/04 ,  C09C3/08 ,  C09K9/00

CPC分类号： C09K5/14 ,  C08J3/2056 ,  C08K9/02 ,  C08K9/04 ,  C09C3/006 ,  C09C3/048 ,  C09C3/08 ,  C09K9/00 ,  C01P2004/03 ,  C01P2004/24 ,  C01P2006/32 ,  C08J2383/04 ,  C08K2003/385 ,  C08K2201/001 ,  C08K2201/011

摘要： A silicone rubber composite heat dissipation pad and a preparation method thereof are provided. The method includes: dispersing hydroxyl-functionalized boron nitride nanosheet powder into deionized water, pouring it into a specialized container, pre-freezing it using liquid nitrogen, and then freeze-drying it to obtain a boron nitride nanosheet skeleton arranged in a horizontal direction; uniformly dispersing thermochromic nanoparticles in acetone to obtain a dispersion, mixing the dispersion with liquid silicone rubber and stirring until acetone is completely evaporated, then adding a curing agent to obtain a liquid silicone rubber pre-cure solution; pouring the liquid silicone rubber pre-cure solution into a container containing the boron nitride nanosheet skeleton, so that the liquid silicone rubber pre-cure solution is fully immersed in an interior of the boron nitride nanosheet skeleton; and then curing is carried out by elevating the temperature to obtain the heat dissipation pad.

公开(公告)号：US12046432B2

公开(公告)日：2024-07-23

申请号：US17812842

申请日：2022-07-15

申请人： SICHUAN UNIVERSITY

发明人： Xiaolong Huang ,  Xueyan Bai ,  Weiwei Chen ,  Haiyi Zhu ,  Tao Sun ,  Yuezheng Wu ,  Guo Hong ,  Yuhang Xia ,  Lihua Zhao ,  Junwen Ren ,  Wenjun Ning

IPC分类号： H01H33/664 ,  H01H33/662

CPC分类号： H01H33/664 ,  H01H33/66207 ,  H01H2033/66223

摘要： A vacuum interrupter. The vacuum interrupter comprising at least one anode side contact blade, at least one cathode side contact blade, at least one anode side conducting rod, at least one a cathode side conducting rod, a shielding case and an outer magnet, wherein the shielding case covers the at least one anode side contact blade, the c at least one anode side contact blade, the at least one anode side conducting rod and at least one cathode side conducting rod; and the outer magnet covers the shielding case. According to the vacuum interrupter, the outer magnet is arranged to generate a fixed first longitudinal magnetic field in the interelectrode area of the at least one anode side contact blade and the at least one cathode side contact blade, contraction of arcs during current breaking can be alleviated, the arcs are in a diffusion state, and ablation of the contact in the arcing process is reduced, and breaking capacity of a vacuum circuit breaker is guaranteed.