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1. 发明公开

US20240175169A1 AEROGEL FIBER HAVING SPECIFIC CROSS-SECTIONAL MORPHOLOGICAL FEATURE, GRAPHENE FIBER AND PREPARATION METHOD AND DEVICE THEREFOR 审中-公开
公开(公告)号：US20240175169A1
公开(公告)日：2024-05-30
申请号：US18434741
申请日：2024-02-06
申请人： ZHEJIANG UNIVERSITY
发明人： Chao Gao , Peng Li , Yingiun Liu , Zhen Xu , Ziqiu Wang
IPC分类号： D01D5/06 , D01D10/02 , D01D10/06 , D01F9/12
CPC分类号： D01D5/06 , D01D10/02 , D01D10/06 , D01F9/12 , D10B2101/12 , D10B2401/08 , D10B2401/16
摘要： An aerogel fiber having specific cross-sectional morphological feature, graphene fiber and a preparation method and device therefor are provided. The arrangement of the cross-sectional two-dimensional nanosheets of the aerogel fiber can be regulated. The regulation method includes: adding a rotating flow field device during wet spinning before the spinning fluid is sprayed out, the rotating flow field causes the two-dimensional nanosheets to form a specific sheet-like arrangement in the cross-sectional direction of the gel fiber under the action of rotating shear, and preparing a graphene oxide aerogel fiber with specific morphological structure (concentric or spiral) from the gel fiber having specific cross-sectional morphological structure under freeze-drying conditions. Further, drying and densifying, stretching and reducing the hydrogel fiber with the concentric circle structure are performed to obtain a graphene fiber with high modulus and high thermal conductivity.

2. 发明授权

US11834336B2 Independent free-standing graphene film and method of preparing the same 有权
公开(公告)号：US11834336B2
公开(公告)日：2023-12-05
申请号：US16476117
申请日：2018-05-08
申请人： ZHEJIANG UNIVERSITY
发明人： Chao Gao , Li Peng , Lin Zhang
IPC分类号： C01B32/184 , C01B32/198
CPC分类号： C01B32/184 , C01B32/198 , C01B2204/04
摘要： Proposed is a method of preparing an independent free-standing graphene film. The graphene film is obtained by means of suction filtration of graphene oxide into a film, solid phase transfer, chemical reduction and the like steps. The graphene film is formed by means of physical cross-linking of a single layer of oxidized/reduced graphene oxide. The graphene film has a thickness of 10-2000 atomic layers. The graphene oxide film has a small thickness and a large number of defects inside, so that it has good transparency and excellent flexibility. On the basis of the transfer film-forming method above, an independent free-standing wrinkled graphene film having a nanoscale thickness is prepared by using a poor solvent and a special high temperature annealing process, and an independent free-standing foamed graphene film having a nanoscale thickness is obtained by using a film-forming thickness and a special high temperature annealing process.

3. 发明授权

US10145029B2 Graphene fiber and prepartion method thereof 有权
公开(公告)号：US10145029B2
公开(公告)日：2018-12-04
申请号：US14559630
申请日：2014-12-03
申请人： Huawei Technologies Co., Ltd. , Zhejiang University
发明人： Xiaosong Zhou , Yan Xu , Chao Gao , Zhen Xu
IPC分类号： D01F9/12 , D01D5/06 , D01F1/09 , D01F11/10 , C01B32/182 , C01B32/194
摘要： A graphene fiber and a preparation method thereof, where the graphene fiber is a composite fiber of metal nanowire doped graphene fiber, and principal components of the composite fiber are graphene and metal nanowires, a mass ratio of metal nanowires is 0.1%-50%, the graphene is in a form of sheet, and both the metal nanowires and graphene sheets are arranged in parallel along an axial direction of the graphene fiber. The metal nanowire doped graphene fiber is a new type of a high performance multi-functional fiber material, which achieves a significant improvement in electrical conductivity of graphene fibers through doping of metal nanowires and meanwhile demonstrates excellent tensile strength and toughness. The metal nanowire doped graphene fiber has great potential application value in a plurality of fields, for example, it is used as a lightweight flexible wire.

4. 发明授权

US12097661B2 Construction method of 3D printing and weaving integrated building 有权
公开(公告)号：US12097661B2
公开(公告)日：2024-09-24
申请号：US17268399
申请日：2019-09-04
申请人： ZHEJIANG UNIVERSITY
发明人： Xiaoyan Sun , Hailong Wang , Jie Chen , Qun Wang , Chao Gao , Zhicheng Zhang
IPC分类号： B28B23/02 , B28B1/00 , B28B1/52 , B29C39/10 , B29C64/106 , B29C64/188 , B29C64/386 , B29C70/68 , B29C70/70 , B33Y10/00 , B33Y50/00 , E01D21/00 , E04B1/35 , E04G21/02 , E04G21/12 , E04G21/14 , G06F30/13 , G06F30/23 , B29K77/00 , B29K305/12 , B29L31/10 , G06F113/10
CPC分类号： B29C64/386 , B28B1/001 , B28B1/523 , B29C64/188 , B29C70/682 , B33Y10/00 , B33Y50/00 , E04B1/3505 , E04G21/02 , E04G21/14 , G06F30/13 , G06F30/23 , B29K2077/00 , B29K2305/12 , B29L2031/10 , G06F2113/10
摘要： The present invention discloses a construction method of 3D printing and weaving integrated building, comprising: selecting basic building structural components, using finite element analysis after spatial modeling, and combining stress nephogram to set a discrimination domain value and optimize a structure space, obtaining a structural component skeleton; calculating and analyzing the structural component skeleton, determining a weaving range and weaving density of a wire according to weak areas and sizes under structural stress; and then determining a printing process and weaving process according to the structural component skeleton, the weaving range and the weaving density; preparing 3D printing material; 3D printing a matrix and weaving the wire according to the printing process and weaving process, constructing layer by layer, or printing segments, and then connecting segments by preset tenoning structural sections to form a 3D printing and weaving integrated building. The construction method of the present invention has high toughness, fatigue resistance, longevity and other advantages; so that each part of the building can not only meet the different requirements of structural mechanics, but also can achieve economic beauty and modeling art on the basis of safety and reliability.

5. 发明申请

US20220204348A1 ENHANCED GRAPHENE STRUCTURE BASED ON WEAK COUPLING, GRAPHENE FILM, AND PHOTOELECTRIC DEVICE 有权
公开(公告)号：US20220204348A1
公开(公告)日：2022-06-30
申请号：US17696899
申请日：2022-03-17
申请人： ZHEJIANG UNIVERSITY
发明人： Chao Gao , Li Peng , Lingfei Li , Wenzhang Fang , Yingjun Liu
IPC分类号： C01B32/186 , H01L31/028
摘要： A weakly coupled enhanced graphene film includes an enhanced graphene structure based on weak coupling, wherein the enhanced graphene structure based on weak coupling comprises a plurality of graphene units stacked vertically; the graphene unit is a single graphene sheet, or consists of two or more graphene sheets stacked in AB form; two vertically adjacent graphene units are weakly coupled, to promote the hot electron transition and increase the joint density of states, thereby increasing the number of hot electrons in high-energy states; the stacking direction of the graphene units in the graphene structure is in the thickness direction of the graphene film; and the graphene film enhances the accumulation of hot electrons in high-energy states by the enhanced graphene structure based on weak coupling.

6. 发明授权

US11679983B2 Super-flexible high thermal conductive grapheme film and preparation method thereof 有权
公开(公告)号：US11679983B2
公开(公告)日：2023-06-20
申请号：US16070449
申请日：2016-07-20
申请人： ZHEJIANG UNIVERSITY
发明人： Chao Gao , Li Peng , Yanqiu Jiang , Yingjun Liu
IPC分类号： B32B9/00 , C01B32/192 , C01B32/198
CPC分类号： C01B32/192 , C01B32/198 , C01B2204/04 , C01B2204/24 , C01B2204/26 , C01P2002/82 , C01P2004/03 , C01P2006/10 , C01P2006/32
摘要： A super-flexible high thermal conductive graphene film and a preparation method thereof are provided. The graphene film is obtained from ultra large homogeneous graphene sheets through processes of solution film-forming, chemical reduction, high temperature reduction, high pressure suppression and so on. The graphene film has a density in a range of 1.93 to 2.11 g/cm3, is formed by overlapping planar oriented graphene sheets with an average size of more than 100 μm with each other through π-π conjugate action, and comprises 1 to 4 layers of graphene sheets which have few defects. The graphene film can be repeatedly bent for 1200 times or more, with elongation at break of 12-18%, electric conductivity of 8000-10600 S/cm, thermal conductivity of 1800-2600 W/mK, and can be used as a highly flexible thermal conductive device.

7. 发明授权

US11380897B2 Preparation method of graphene flower and use of graphene flower in lithium sulfur battery 有权
公开(公告)号：US11380897B2
公开(公告)日：2022-07-05
申请号：US16473255
申请日：2017-12-29
申请人： ZHEJIANG UNIVERSITY
发明人： Chao Gao , Hao Chen
IPC分类号： H01M4/62 , C01B32/184 , H01M4/139 , H01M4/36 , H01M4/38 , H01M10/052
摘要： Disclosed in the present disclosure is a preparation method of a graphene flower, mainly lying in spray-drying graphene oxide solution to obtain a graphene oxide flower and then performing reduction on the same to obtain a graphene flower. Also disclosed in the present disclosure is use of the graphene flower in a lithium sulfur battery. The present disclosure is easy to operate, low cost, and suitable for scaled production, can improve the rate capability of a lithium sulfur battery while ensuring the high energy ratio of the lithium sulfur battery, thus greatly improving the energy density thereof, and can be applied in the field of high energy storage material and devices.

8. 发明授权

US09920160B2 Method for synthesis of polymer containing multiple epoxy groups 有权
公开(公告)号：US09920160B2
公开(公告)日：2018-03-20
申请号：US15305090
申请日：2015-04-29
申请人： ZHEJIANG UNIVERSITY
发明人： Chao Gao , Yaochen Zheng , Li Peng , Shengying Cai , Zhulin Weng
IPC分类号： C08G59/02 , C08G59/32
CPC分类号： C08G59/022 , C08G59/3209 , C08G59/3263
摘要： A method for a synthesis of a polymer containing multiple epoxy groups includes steps of: under protection of nitrogen or argon, with a photosensitive free radical initiator under an ultraviolet light irradiation, initiating a mixture of a dithiol compound and alkynyl glycidyl ether or other alkynyl-containing compounds to proceed a thiol-yne polymerization, so as to obtain the polymer. The number of the epoxy groups is able to be adjusted through changing a type of a dithiol monomer, a mixing ratio of the dithiol monomer, and a mixing ratio between the alkynyl glycidyl ether and other alkynyl compounds. The present invention has advantages of: fast reaction, convenient process, easy post-processing, a large number of the epoxy groups, and adjustable and controllable content. The obtained polymer has a wide potential application in fields of coating, adhesive, ink, encapsulating material, resin for composite material, additive, high performance material, function material, and so on.

9. 发明申请

US20170044304A1 Method for synthesis of polymer containing multiple epoxy groups 审中-公开
标题翻译：合成含有多个环氧基的聚合物的方法
公开(公告)号：US20170044304A1
公开(公告)日：2017-02-16
申请号：US15305090
申请日：2015-04-29
申请人： ZHEJIANG UNIVERSITY
发明人： Chao Gao , Yaochen Zheng , Li Peng , Shengying Cai , Zhulin Weng
IPC分类号： C08G59/02
CPC分类号： C08G59/022 , C08G59/3209 , C08G59/3263
摘要： A method for a synthesis of a polymer containing multiple epoxy groups includes steps of: under protection of nitrogen or argon, with a photosensitive free radical initiator under an ultraviolet light irradiation, initiating a mixture of a dithiol compound and alkynyl glycidyl ether or other alkynyl-containing compounds to proceed a thiol-yne polymerization, so as to obtain the polymer. The number of the epoxy groups is able to be adjusted through changing a type of a dithiol monomer, a mixing ratio of the dithiol monomer, and a mixing ratio between the alkynyl glycidyl ether and other alkynyl compounds. The present invention has advantages of: fast reaction, convenient process, easy post-processing, a large number of the epoxy groups, and adjustable and controllable content. The obtained polymer has a wide potential application in fields of coating, adhesive, ink, encapsulating material, resin for composite material, additive, high performance material, function material, and so on.
摘要翻译：一种合成含有多个环氧基的聚合物的方法包括以下步骤：在紫外线照射下用光敏自由基引发剂保护氮或氩，引发二硫醇化合物和炔基缩水甘油醚或其它炔基 - 含有化合物进行硫醇基聚合，得到聚合物。可以通过改变二硫醇单体的类型，二硫醇单体的混合比例和炔基缩水甘油醚与其它炔基化合物的混合比来调节环氧基的数目。本发明的优点是反应速度快，工艺便利，后处理容易，大量环氧基，可调节可控含量。所得聚合物在涂料，粘合剂，油墨，包封材料，复合材料用树脂，添加剂，高性能材料，功能材料等领域具有广泛的应用。

10. 发明公开

US20230338985A1 AUTOMATIC PRODUCTION APPARATUS FOR HIGH-THERMAL-CONDUCTIVITY FLOCKING PAD 审中-公开
公开(公告)号：US20230338985A1
公开(公告)日：2023-10-26
申请号：US18138138
申请日：2023-04-24
申请人： Zhejiang University
发明人： Yingjun Liu , Chao Gao , Jiahao Lu , Zhen Xu , Bo Wang
IPC分类号： B05C19/00 , B05C19/06
CPC分类号： B05C19/002 , B05C19/06
摘要： An automatic production apparatus for high-thermal-conductivity flocking pad includes a conveyor belt system, a cutting assembly, an electrostatic flocking assembly, a perfusion device and a thermosetting device, wherein the electrostatic flocking assembly is connected to a power supply which is configured for outputting a step-wave voltage through a bottom screen mesh thereof. The polymer matrix is conveyed through the conveyor belt system, and is stretched, flocked in the step-wave electric field, shrunk, poured and dried to form a flocking pad product with high-thermal-conductivity. In this invention, the polymer matrix is stretched and shrunk to make the flocking be dense by regulating and controlling the speed of the conveyor belt system, a step-wave electric field is provided during the flocking process, and meanwhile, the flocking, pouring and curing time is regulated and controlled.

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