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公开(公告)号：US20220297288A1
公开(公告)日：2022-09-22
申请号：US17655014
申请日：2022-03-16
发明人： Guoqiang Li , Sarah Li , Jizhou Fan , Xiaming Feng
摘要： In one aspect, the disclosure relates to free-standing artificial muscles having a polymeric core encased by an elastic spring. The polymeric core can be any two-way shape memory polymer including, but not limited to, a semicrystalline polymer (polybutadiene polymer, a polycaprolactone polymer, a poly(ethylene-co-vinyl acetate)), a rubber, an ionomer, an elastomer, or a gel. In some aspects, the shape memory polymers are crosslinked. In an alternative aspect, the polymeric core is a twisted and coiled polymeric fiber. In other aspects, the polymeric core is reprocessable, remoldable, and/or recyclable. In one aspect, the elastic spring is metallic, ceramic, plastic, or any combination thereof. The stiffnesses or spring rate of the elastic spring and polymeric core, the two-way shape memory effect of the polymeric core, and their geometrical dimensions can be optimized to maximize the actuation strain based on theoretical principles described herein. Also disclosed are devices incorporating the free-standing artificial muscles.
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公开(公告)号：US11041115B2
公开(公告)日：2021-06-22
申请号：US16709038
申请日：2019-12-10
发明人： Arash Dahi Taleghani , Amir Shojaei , Guoqiang Li
摘要： The present disclosure provides for shape memory proppants, methods for making shape memory proppants, and methods of using shape memory proppants, and the like. The strong expandable proppants of the present disclosure may be used in maintaining fracture openings.
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公开(公告)号：US11767263B2
公开(公告)日：2023-09-26
申请号：US17740779
申请日：2022-05-10
发明人： Guoqiang Li , Harper Meng
IPC分类号： C04B26/16 , C04B26/04 , C08G18/32 , B29C73/18 , C04B26/26 , C04B28/02 , C04B20/10 , C08G18/66 , C08G18/76 , C08G18/42 , C08L75/04 , C08G18/10 , D01F6/70 , C04B111/00 , C04B111/72 , C04B103/00 , D01D5/12
CPC分类号： C04B26/16 , B29C73/18 , C04B20/1037 , C04B26/04 , C04B26/26 , C04B28/02 , C08G18/10 , C08G18/3206 , C08G18/4238 , C08G18/664 , C08G18/7671 , C08L75/04 , C04B2103/0065 , C04B2111/00612 , C04B2111/72 , C08G2110/0025 , C08G2280/00 , C08G2350/00 , D01D5/12 , D01F6/70 , C08G18/10 , C08G18/3206
摘要： Provided is a method for altering properties of tension programmed fibrous shape memory polymer. The method can include applying a protective coating to the tension programmed shape memory polymer, then applying a supportive coating to the tension programmed shape memory polymer to form a coated fiber. The protective coating avoids contact between the shape memory polymer and chemicals used in the supportive coating that can decompensate the shape memory polymer.
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公开(公告)号：US20190024490A1
公开(公告)日：2019-01-24
申请号：US16040879
申请日：2018-07-20
发明人： Arash Dahi Taleghani , Guoqiang Li
IPC分类号： E21B43/26 , E21B33/138 , C09K8/42
摘要： Methods for temporary fracture isolation are provided. An existing fracture is treated with a chemical diverter. The chemical diverter is exposed to conditions causing it to expand, plugging the fracture. A new fracture can be created through the application of pressure and fluid, without disrupting the plugged fracture. The chemical diverter can then be removed through biodegradation or the application of a solvent to reopen the first fracture.
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公开(公告)号：US20180320064A1
公开(公告)日：2018-11-08
申请号：US15988252
申请日：2018-05-24
发明人： Arash Dahi Taleghani , Amir Shojaei , Guoqiang Li
IPC分类号： C09K8/80
摘要： The present disclosure provides for shape memory proppants, methods for making shape memory proppants, and methods of using shape memory proppants, and the like. The strong expandable proppants of the present disclosure may be used in maintaining fracture openings.
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公开(公告)号：US10954767B2
公开(公告)日：2021-03-23
申请号：US16040879
申请日：2018-07-20
发明人： Arash Dahi Taleghani , Guoqiang Li
IPC分类号： E21B43/26 , E21B33/138 , C09K8/508 , C09K8/516 , C09K8/42
摘要： Methods for temporary fracture isolation are provided. An existing fracture is treated with a chemical diverter. The chemical diverter is exposed to conditions causing it to expand, plugging the fracture. A new fracture can be created through the application of pressure and fluid, without disrupting the plugged fracture. The chemical diverter can then be removed through biodegradation or the application of a solvent to reopen the first fracture.
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公开(公告)号：US10907351B2
公开(公告)日：2021-02-02
申请号：US15818857
申请日：2017-11-21
发明人： Guoqiang Li , Gefu Ji
摘要： A hybrid core comprising a matrix and tubular structural reinforcements, such as a ductile matrix core reinforced with ductile hollow tubes, as well as panels which comprise such hybrid core. Embodiments of the invention manifest resistance to both interfacial debonding and ballistic penetration.
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公开(公告)号：US20200325340A1
公开(公告)日：2020-10-15
申请号：US16859481
申请日：2020-04-27
发明人： Guoqiang Li
IPC分类号： C08L101/12 , C09J125/08 , C08F299/02
摘要： A composition for sealing defects in structural materials such as roads or paved surfaces, the composition preferably comprising one or more shape memory polymer (xamSMP) components capable of responding to increased temperature by decreasing in volume.
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公开(公告)号：US10538694B2
公开(公告)日：2020-01-21
申请号：US15988252
申请日：2018-05-24
发明人： Arash Dahi Taleghani , Amir Shojaei , Guoqiang Li
摘要： The present disclosure provides for shape memory proppants, methods for making shape memory proppants, and methods of using shape memory proppants, and the like. The strong expandable proppants of the present disclosure may be used in maintaining fracture openings.
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公开(公告)号：US10005953B2
公开(公告)日：2018-06-26
申请号：US14932202
申请日：2015-11-04
发明人： Arash Dahi Taleghani , Amir Shojaei , Guoqiang Li
摘要： The present disclosure provides for shape memory proppants, methods for making shape memory proppants, and methods of using shape memory proppants, and the like. The strong expandable proppants of the present disclosure may be used in maintaining fracture openings.
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