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公开(公告)号：US20250128235A1
公开(公告)日：2025-04-24
申请号：US19001707
申请日：2024-12-26
Applicant: Hunan Institute of Science and Technology
Inventor： Yongbing Yuan , Hao Ma , Junkang Shi , Congshan Zhou , An Li , Lijun Li , Jundong Xu
Abstract: A COF@hydromagnesite composite material and its preparation method and application are disclosed. The preparation method of the composite material includes the following steps. Firstly, diisocyanate organic matters are used as a modifier to carry out chemical reaction with the hydromagnesite powder to obtain modified hydromagnesite powder particles. Secondly, tris(4-aminophenyl)amine and 2,5-dihydroxyterephthalaldehyde are adopted as reaction monomers for reacting to obtain the Covalent Organic Framework (COF) material. And finally, taking modified hydromagnesite powder particle as a core and COF as a shell, the COF@hydromagnesite composite material is prepared. The COF@hydromagnesite composite material synthesized by the method disclosed by the disclosure is simple in preparation process, high in stability and good in selectivity, which can be used for adsorption treatment of lead ions in water.
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2.发明授权公开(公告)号：US12209188B2
公开(公告)日：2025-01-28
申请号：US18807393
申请日：2024-08-16
Applicant: Hunan Institute of Science and Technology
Inventor： Yongbing Yuan , Junkang Shi , Congshan Zhou , An Li , Lijun Li , Jundong Xu , Hao Ma
Abstract: The present invention provides an ultrafine modified hydromagnesite powder, and a preparation method and application thereof. The preparation method comprises the following steps: drying ultrafine hydromagnesite, then adding a certain amount of organic dispersion reagent, isocyanate compound and catalyst, stirring at a certain temperature for a period of time, filtering, washing and drying to obtain powder 1; taking the powder 1, a certain amount of organic dispersion reagent and fatty amine, stirring at a certain temperature for a period of time, filtering, washing and drying to obtain the ultrafine modified hydromagnesite powder. The powder is mixed with polyethylene and an auxiliary agent, and extruded for granulation at 160-200° C. to obtain polyethylene composite material. The material has excellent tensile strength and flame retardant property.
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3.发明授权公开(公告)号：US12187648B2
公开(公告)日：2025-01-07
申请号：US18802061
申请日：2024-08-13
Applicant: HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Yongbing Yuan , Xinyu Tang , Junkang Shi , Congshan Zhou , Shuqin Zheng , Lijun Li , An Li , Jundong Xu
Abstract: A method for preparing modified calcined kaolin particles with surface amphiphilicity. The method includes the steps of drying and sieving the calcined kaolin particles, adding ethanol, and stirring to obtain a suspension A, preparing an ethanol solution of a vinyl silane coupling agent, and stirring for a period of time at a certain temperature to obtain a solution B, dripping the solution B into the solution A, and stirring for a period of time at a certain temperature to obtain a suspension C, reducing the temperature of the suspension C, introducing nitrogen, adding a certain amount of sulfhydryl compound, stirring for a period of time at a certain temperature to obtain a suspension D, filtering, washing and drying to obtain the modified calcined kaolin particles.
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Patent Agency Ranking
4.发明申请公开(公告)号：US20240400458A1
公开(公告)日：2024-12-05
申请号：US18802061
申请日：2024-08-13
Applicant: HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： YONGBING YUAN , XINYU TANG , JUNKANG SHI , CONGSHAN ZHOU , SHUQIN ZHENG , LIJUN LI , AN LI , JUNDONG XU
Abstract: A method for preparing modified calcined kaolin particles with surface amphiphilicity. The method includes the steps of drying and sieving the calcined kaolin particles, adding ethanol, and stirring to obtain a suspension A, preparing an ethanol solution of a vinyl silane coupling agent, and stirring for a period of time at a certain temperature to obtain a solution B, dripping the solution B into the solution A, and stirring for a period of time at a certain temperature to obtain a suspension C, reducing the temperature of the suspension C, introducing nitrogen, adding a certain amount of sulfhydryl compound, stirring for a period of time at a certain temperature to obtain a suspension D, filtering, washing and drying to obtain the modified calcined kaolin particles.
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5.发明公开公开(公告)号：US20230311272A1
公开(公告)日：2023-10-05
申请号：US18119297
申请日：2023-03-09
Applicant: HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： CHAO LI , XIAOHONG ZHANG , ZHAOYAO SHI , YUEJIAO DING , LIWEI NING , XIAOHONG TANG , SONGHUI ZHANG , WEI LI , WANYI TIAN
Abstract: The present invention provides a nanolayer-lubricated diamond grinding wheel grinding method based on a shock wave cavitation effect. In the method, after a gas pressure regulation valve is turned on, a shock wave generated by an acceleration tube pushes nanoparticles to move forward, and the nanoparticles are then accelerated by a small de Laval nozzle to acquire a high initial velocity. One wave source of a shock wave speed-increase module generates a high-frequency high-strength shock wave, to impact nanoparticles with an initial velocity, to enable the nanoparticles to be continuously accelerated downward in an axial direction of a large de Laval nozzle, until the nanoparticles are embedded on a grinding wheel surface at a maximum speed to form a nanolayer. The other wave source is used to clean impurities on the grinding wheel surface. In a processing process, the nanoparticles of the nanolayer are autonomously released in a core grinding region, to implement self-lubrication and cooling inside the grinding region. This method significantly enhances lubrication and cooling effects and satisfies the green development idea.
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公开(公告)号：US12296318B2
公开(公告)日：2025-05-13
申请号：US19001707
申请日：2024-12-26
Applicant: Hunan Institute of Science and Technology
Inventor： Yongbing Yuan , Hao Ma , Junkang Shi , Congshan Zhou , An Li , Lijun Li , Jundong Xu
Abstract: A COF@hydromagnesite composite material and its preparation method and application are disclosed. The preparation method of the composite material includes the following steps. Firstly, diisocyanate organic matters are used as a modifier to carry out chemical reaction with the hydromagnesite powder to obtain modified hydromagnesite powder particles. Secondly, tris(4-aminophenyl)amine and 2,5-dihydroxyterephthalaldehyde are adopted as reaction monomers for reacting to obtain the Covalent Organic Framework (COF) material. And finally, taking modified hydromagnesite powder particle as a core and COF as a shell, the COF@hydromagnesite composite material is prepared. The COF@hydromagnesite composite material synthesized by the method disclosed by the disclosure is simple in preparation process, high in stability and good in selectivity, which can be used for adsorption treatment of lead ions in water.
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7.发明公开公开(公告)号：US20230330815A1
公开(公告)日：2023-10-19
申请号：US18212201
申请日：2023-06-21
Applicant: HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jiaming LIU , XIaohong ZHANG , Liwei NING , Jia DUAN , Xiong TANG , Wei LI , Zhiyuan YANG , Wanyi TIAN , Shiguo TENG
Abstract: A Block-Type structured diamond grinding wheel with adaptive supply of instantaneous Cooling, includes a grinding wheel substrate and several grinding wheel units, each including an execution mechanism, a push mechanism, and an instantaneous Cooling mechanism. Various structured patterns are provided on an upper surface of the grinding unit in the execution mechanism, and a heat sink is disposed at a lower surface. During operation, a tangential grinding force generated by the grinding unit and a workpiece presses a sprayer to spray nano fluid into an operating region, to implement instantaneous Cooling of grinding wheel. When wear occurs in a grinding unit of a grinding wheel, a corresponding grinding unit may be replaced to extend the service life of the grinding wheel, and production costs are reduced. A special surface structure of the grinding unit further enhances a cooling effect, thereby improving a surface quality of a workpiece.
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8.发明申请公开(公告)号：US20240409748A1
公开(公告)日：2024-12-12
申请号：US18807393
申请日：2024-08-16
Applicant: Hunan Institute of Science and Technology
Inventor： Yongbing Yuan , Junkang Shi , Congshan Zhou , An Li , Lijun Li , Jundong Xu , Hao Ma
Abstract: The present invention provides an ultrafine modified hydromagnesite powder, and a preparation method and application thereof. The preparation method comprises the following steps: drying ultrafine hydromagnesite, then adding a certain amount of organic dispersion reagent, isocyanate compound and catalyst, stirring at a certain temperature for a period of time, filtering, washing and drying to obtain powder 1; taking the powder 1, a certain amount of organic dispersion reagent and fatty amine, stirring at a certain temperature for a period of time, filtering, washing and drying to obtain the ultrafine modified hydromagnesite powder. The powder is mixed with polyethylene and an auxiliary agent, and extruded for granulation at 160-200° C. to obtain polyethylene composite material. The material has excellent tensile strength and flame retardant property.
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