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公开(公告)号：US20200286691A1
公开(公告)日：2020-09-10
申请号：US16759330
申请日：2018-07-04
Applicant: SOOCHOW UNIVERSITY , ZHANGJIAGANG INSTITUTE OF INDUSTRIAL TECHNOLOGIES SOOCHOW UNIVERSITY
Inventor： Aijuan GU , Hao FANG , Guozheng LIANG , Li YUAN
Abstract: The invention discloses an aramid fiber electrode and a preparation method thereof. Silver nanoparticles, carbon nanotubes and polypyrrole were sequentially coated on the surface of the aramid fiber by chemical bonding, to prepare an aramid fiber electrode, two aramid fiber electrodes were wound with an electrolyte to obtain an aramid fiber electrochemical capacitor. Compared with the polymer fiber electrochemical capacitor prepared in the prior art, the aramid fiber electrochemical capacitor provided by the present invention has both high specific capacitance, high energy density, high mechanical performance, high stability, good flexibility and wearability. And other characteristics; the preparation method is controllable and suitable for large-scale applications.
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2.发明申请公开(公告)号：US20200283595A1
公开(公告)日：2020-09-10
申请号：US16759327
申请日：2018-02-27
Applicant: SOOCHOW UNIVERSITY , ZHANGJIAGANG INSTITUTE OF INDUSTRIAL TECHNOLOGIES SOOCHOW UNIVERSITY
Inventor： Guozheng LIANG , Youhao ZHANG , Aijuan GU , Li YUAN
IPC: C08J11/12 , C08G59/42 , C07D327/00
Abstract: This invention provides a self-healable epoxy resin and its preparation, recycling and remolding method. With the catalyst of potassium iodide, an ester solution of 2-mercaptoacetic acid was oxidated by 30% H2O2 to form 2,2′-dithiodiacetic acid; then 2,2′-dithiodiacetic acid was dehydrated and cyclizated by anhydride to form 1,4,5-oxadithiepane-2,7-dione; 1,4,5-oxadithiepane-2,7-dione and methylhexahydrophthalic anhydride were mixed by mass ratio and cured with epoxides to get the self-healable epoxy resin. Through controlling dynamic and permanent three-dimensional crosslinked network, the self-healable epoxy resins provided in this invention exhibit high thermal resistance and improved mechanical properties as well as excellent self-healing ability, recyclability and remoldability. This invention provides a preparation method with the merits of low cost, simple production processes, broad application prospects and strong utility.
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公开(公告)号：US20220325046A1
公开(公告)日：2022-10-13
申请号：US17631382
申请日：2020-07-27
Applicant: SOOCHOW UNIVERSITY
Inventor： Aijuan GU , Guozheng LIANG , Li YUAN
Abstract: The invention discloses a remoldable shape memory bismaleimide resin and its application. The preparation method includes blending 2-allylphenyl glycidyl ether and adipic acid in acetonitrile, carrying out an esterification reaction under the condition of quaternary ammonium salt as a catalyst to obtain bis(3-(2-allylphenoxy)-2-hydroxypropyl)adipate containing a reversible dynamic group; then uniformly mixing bis(3-(2-allylphenoxy)-2-hydroxypropyl)adipate and bismaleimide, curing to obtain the remoldable shape memory bismaleimide resin. The prepared remoldable shape memory bismaleimide resin is not only excellent heat resistance and mechanical properties, but also can be remolded under hot pressing conditions. The preparation method of the remoldable shape memory bismaleimide resin has the advantages of wide raw material sources and simple process, and has a wide application prospect in the fields of aerospace, transportation, electronic information, new energy, insulated electrical industry and the like.
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公开(公告)号：US20200062903A1
公开(公告)日：2020-02-27
申请号：US16466111
申请日：2016-12-03
Applicant: SOOCHOW UNIVERSITY
Inventor： Aijuan GU , Jiatao MIAO , Guozheng LIANG , Li YUAN
IPC: C08G73/10
Abstract: The present invention discloses a modified bismaleimide resin and preparation method thereof; under conditions of N,N-dimethylformamide serving as a catalyst, biomass-based 2,5-furandicarboxylic acid and thionyl chloride are acylated to obtain 2,5-furan diformyl chloride, which is then dissolved in dichloromethane with a biomass-based eugenol; under tertiary amine conditions an esterification reaction takes place, and a fully biomass-based bis(4-allyl-2-methoxyphenyl)furan-2,5-dicarboxylic acid ester is thus obtained; same is used for preparing a modified bismaleimide resin. The bismaleimide resin prepared by the present invention has excellent thermal properties and rigidity; the preparation method uses 2,5-furandicarboxylic acid from biomass as well as eugenol; the raw materials are green and environmentally friendly and renewable; the invention also has the feature of a simple production process, and has broad prospects for application in such fields as aeronautics and astronautics, electronic information, electrical insulation.
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公开(公告)号：US20210222358A1
公开(公告)日：2021-07-22
申请号：US17052903
申请日：2018-05-10
Applicant: SOOCHOW UNIVERSITY
Inventor： Aijuan GU , Hua CAI , Guozheng LIANG , Li YUAN
IPC: D06M11/38 , D06M11/36 , D06M11/80 , D06M13/513 , D06M15/61
Abstract: The present invention relates to a surface-modified aramid fiber and a method for preparing the same. The method includes the following steps: modifying an aramid fiber having amino groups and carboxyl groups on the surface with siloxane γ-glycidoxypropyltrimethoxysilane to obtain a silicon methoxylated aramid fiber; reacting same with a cerium oxide coated with polydopamine modified chaotic boron nitride to obtain a surface-modified aramid fiber. The cerium oxide coated with polydopamine modified chaotic boron nitride has high ultraviolet absorption, and has extremely low catalytic activity, avoiding the damage to a fiber structure by photocatalysis during radiation, being an effective, safe and highly-efficient ultraviolet absorber. The surface-modified aramid fiber provided in the present invention has an ultraviolet-resistant function, high surface activity, good thermal performance, and better mechanical performance, providing excellent overall performance, and having higher utilization value. The method is simple and controllable, being suitable for large scale production.
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Patent Agency Ranking
公开(公告)号：US20200231742A1
公开(公告)日：2020-07-23
申请号：US16564802
申请日：2019-09-09
Applicant: SOOCHOW UNIVERSITY
Inventor： Aijuan GU , Zhenjie DING , Guozheng LIANG , Li YUAN
Abstract: A preparation method of thermadapt shape memory polymers includes: (1) synthesis of pendant hydroxyl groups functionalized epoxy oligomer using epoxy resin and alcohol amine; (2) synthesis of alkoxyl groups terminated silane crosslinking agent by isocyanate silane coupling agent and diamine; (3) crosslinked shape memory polymers were prepared by condensation reaction of pendant hydroxyl groups functionalized epoxy oligomer and alkoxyl groups terminated silane crosslinking agent. The thermadapt shape memory polymers show high glass transition temperatures and high tensile strength. The original shape of thermadapt shape memory polymers can be reconfigured to a new permanent shape as needed, and thus effectively solving the bottleneck problems of reprocessing or reshape in the traditional crosslinked polymers once after molding. The thermadapt shape memory polymers are suitable for smart materials based on shape memory polymers with complex three-dimensional permanent shapes, and showing unfolding or folding behaviors along with convert to three-dimensional structures under heat stimulation.
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7.发明申请公开(公告)号：US20190144614A1
公开(公告)日：2019-05-16
申请号：US16070272
申请日：2016-11-29
Applicant: SOOCHOW UNIVERSITY
Inventor： Guozheng LIANG , Sheng SUN , Aijuan GU , Li YUAN
IPC: C08J3/20 , C08L63/10 , C08L33/20 , C08J3/00 , C08J5/18 , C08K3/32 , C08K3/38 , C08K3/16 , C08K5/3445 , C08K5/435 , C08K5/41
Abstract: Disclosed are a lithium salt/polyacrylonitrile/thermosetting resin composite material and a preparation method therefor. 100 parts of polyacrylonitrile and 550-1100 parts of N,N-dimethyl formamide by mass are stirred at a temperature of 25° C.-80° C., and a uniform and transparent polyacrylonitrile solution is obtained; further, 8-36 parts of a lithium salt is added; and the mixture is stirred until a uniform and transparent lithium salt/polyacrylonitrile solution is obtained. A heat-curable resin is added to the lithium salt/polyacrylonitrile solution, and is uniformly mixed. The obtained composite solution is made into a film, and a lithium salt/polyacrylonitrile/thermosetting resin composite material is then obtained after curing and post-treatment. The lithium salt/polyacrylonitrile/thermosetting resin composite material has the advantages of a high dielectric constant and a good flexibility and transparency, and the preparation method of the composite material has the characteristics of a simple operation process, low manufacturing cost and wide applicability.
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8.发明申请公开(公告)号：US20190031572A1
公开(公告)日：2019-01-31
申请号：US16069160
申请日：2016-11-29
Applicant: SOOCHOW UNIVERSITY
Inventor： Guozheng LIANG , Longhui ZHENG , Aijuan GU , Tiekuang DING , Li YUAN
IPC: C04B38/10 , C04B35/636 , C04B38/00 , C04B35/468 , C04B35/634
Abstract: Disclosed are a micrometer/nanometer silver-loaded barium titanate foam ceramic and a preparation method therefor. An organic additive is used as an auxiliary; deionized water is used as a solvent; nanometer barium titanate is used as a ceramic raw material; and same are mixed and ground so as to form a slurry. A pre-treated polymer sponge is impregnated in the slurry for slurry coating treatment and a barium titanate foam ceramic blank is obtained after drying; and then a barium titanate foam ceramic is obtained through sintering. Through dopamine modification, micrometer/nanometer silver is in-situ deposited on a skeleton surface so as to obtain a modified micrometer/nanometer silver-loaded barium titanate foam ceramic. The modified micrometer/nanometer silver-loaded barium titanate foam ceramic is then put into a newly prepared Tollens' reagent for further reduction so as to obtain a micrometer/nanometer silver-loaded barium titanate foam ceramic with a three-dimensional network skeleton structure.
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9.发明公开公开(公告)号：US20230242707A1
公开(公告)日：2023-08-03
申请号：US17927085
申请日：2020-09-29
Applicant: SOOCHOW UNIVERSITY
Inventor： Aijuan GU , Guozheng LIANG , Li YUAN
IPC: C08G73/02 , C07D265/14
CPC classification number: C08G73/0233 , C07D265/14 , C08G2280/00
Abstract: A biomass benzoxazine-based shape memory resin, a preparation method therefor, and an application thereof. The method includes: using biomass furfuryl amine, vanillic aldehyde, and paraformaldehyde as raw materials; obtaining an aldehyde group-containing biomass benzoxazine monomer by means of a heating reaction; mixing the aldehyde group-containing biomass benzoxazine monomer with polyether amine, and obtaining a Schiff base biomass benzoxazine monomer by means of a coupling reaction; and curing the Schiff base biomass benzoxazine monomer to obtain the biomass benzoxazine resin having a shape memory function. The benzoxazine-based shape memory resin has excellent thermal performance, high tensile modulus, high strength; an original shape can be permanently changed according to needs, the defect that traditional cross-linked polymers cannot be reprocessed after being formed is overcome, a recovery function under the condition of heating stimulation achieved, an application range of a shape memory polymer widened due to excellent thermal performance and mechanical performance.
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10.发明申请公开(公告)号：US20200308407A1
公开(公告)日：2020-10-01
申请号：US16759328
申请日：2018-07-04
Applicant: SOOCHOW UNIVERSITY
Inventor： Guozheng LIANG , Youhao ZHANG , Aijuan GU , Li YUAN
Abstract: This invention provides a scrollable and foldable transparent polysiloxane film and its preparation and self-healing method. 2-Hydroxyethyl disulfide, diisocyanate and alkane chloride were mixed and reacted to get disulfide-containing diisocyanate. α,ω-Aminopropyl terminated polydimethylsiloxane, diisocyanate and alkane chloride were mixed and reacted get linear chain-extended polydimethylsiloxane. Linear chain-extended polydimethylsiloxane, multi-amino terminated hyperbranched polysiloxane, disulfide-containing diisocyanate and alkane chloride were mixed and poured into a mould. After drying, the scrollable and foldable transparent polysiloxane film was obtained. The polysiloxane film described in this invention are constructed by dynamic physical crosslinking induced by hydrogen bond and permanent chemical crosslinking generated by hyperbranched polysiloxane. Hence, the polysiloxane film achieves both high stiffness and toughness. The good self-healing behavior of the polysiloxane films is originated from the temperature controlled dissociation of hydrogen bonds and exchange reaction rate of disulfide bonds.
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