Patents Assigned to Southwest University of Science and Technology
  • Patent number: 12176119
    Abstract: The present disclosure discloses an integrated rapid treatment system for nuclear medical radioactive wastewater and an application method thereof. This system includes a wastewater collection unit; a pretreatment unit; a deep purification unit; a solid decay unit; a buffer unit; an online monitoring unit; and a control unit, wherein the online monitoring unit includes a radioactivity level detection module for detecting total ? and total ? radioactivity concentrations of inlet and outlet water of a medium in each unit, and a real-time monitoring module for treatment process parameters. The present disclosure discloses an integrated rapid treatment system for nuclear medical radioactive wastewater and an application method thereof, which can efficiently and quickly purify multi-nuclide organic low-level wastewater produced by a nuclear medical process, and realize rapid online monitoring and automatic control at the same time.
    Type: Grant
    Filed: August 15, 2024
    Date of Patent: December 24, 2024
    Assignee: Southwest University of Science and Technology
    Inventors: Xiaoqin Nie, Cheng Liu, Faqin Dong, Ning Pan, Qiuhong Zhu, Chunyan Ma, Chang Liu, Junling Wang, Zhihui Liao, Jiale Liu
  • Publication number: 20230391963
    Abstract: A reversible stress-responsive material, a preparation method, and a use thereof are provided. The reversible stress-responsive material prepared by the present disclosure has the property of real-time reversible force response at room temperature. When used with crosslinked plastic (high Tg) and rubber (low Tg) polymer materials, the reversible stress-responsive material can significantly enhance the mechanical strength and ductility of covalently cross-linked polymers. In the present disclosure, the triazolinedione (TAD)-indole click chemistry with the force-induced reversible property is used to construct a force-reversible crosslinked polymer material, and such a force-induced reversible crosslinking method can achieve the breakage and re-forming of covalent crosslinking points at room temperature in a solid state without any external stimuli other than the ambient temperature.
    Type: Application
    Filed: August 19, 2022
    Publication date: December 7, 2023
    Applicants: Southwest University of Science and Technology, Sichuan Guanmusi Yang New Material Technology Co LTD
    Inventors: Guanjun CHANG, Li YANG, Yewei XU, Ying HUANG, Rui YUAN, Mengqi DU
  • Publication number: 20230340771
    Abstract: A shear wall connector comprising a pre-built member and a connector, the pre-built member comprising a side plate, a peg, and a shear key, the side plate being provided with a first through hole, the peg and the shear key being provided on the inner and outer sides of the side plate respectively, the peg being provided with a threaded hole at the end connected to the side plate and having the threaded hole aligned with the first through hole wherein the connection member comprises an H-beam, the flange plate of the H-beam being provided with a second through-hole and a shear key adaptor hole matching the first through-hole and the shear key in the side plate. The pre-built elements are pre-built in the concrete wall surface and are assembled by means of the connectors. During installation, the shear key is inserted into the shear key adaptor hole.
    Type: Application
    Filed: February 15, 2023
    Publication date: October 26, 2023
    Applicant: Southwest University of Science and Technology
    Inventors: Xiaowei LI, Dongwen MA, Zhaoqiang ZHANG, Tiedong ZHU, Yong YAO, Jihang LIU, Jiaxin LIU, Yao WANG, Lidan PANG
  • Patent number: 11707724
    Abstract: A preparation method of a bacterial cellulose-defective molybdenum disulfide (BC-MoS2-x) heterojunction material for treating radioactive wastewater is provided, including: preparing bacterial cellulose by the in situ growth technology of Acetobacter xylinum, and freeze-drying to obtain dried bacterial cellulose; carbonizing the dried bacterial cellulose to obtain carbonized bacterial cellulose; dispersing the carbonized bacterial cellulose into deionized water under an ultrasonic treatment; then adding thiourea and Na2MoO4.2H2O, dissolving under an ultrasonic treatment to obtain a reaction mixture, subjecting the reaction mixture to a hydrothermal reaction to obtain a BC-MoS2 heterojunction; and calcining the BC-MoS2 heterojunction in a tube furnace with an Ar/H2 atmosphere to obtain the BC-MoS2-x heterojunction.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: July 25, 2023
    Assignee: Southwest University of Science and Technology
    Inventors: Wenkun Zhu, Tao Chen, Rong He, Fan Yang, Yun Dong, Qian Wang, Bo Liu, Rong Wang
  • Patent number: 11566112
    Abstract: A high-performance triple-crosslinked polymer and a preparation method thereof are provided. The polymer is obtained by curing and cross-linking a monomer having two epoxy groups, a cross-linking monomer and a functional monomer. The polymer contains a cross-linking network formed by covalent bonds and two types of multi-level hydrogen bonds with different strengths. The interaction strength between the covalent bonds and the two types of hydrogen bonds decreases in a gradient. The dilemma of the strength-ductility tradeoff in a high-performance polymer is overcome by forming a triple-crosslinked network with covalent bonds and multi-level hydrogen bonds with different strengths in the polymer. The dynamic and hierarchical hydrogen bonds are broken and recombined timely and continuously to concurrently maintain the complete structure of the polymer network and enable the polymer network to quickly respond to the transmission and dissipation of the external environment.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: January 31, 2023
    Assignees: Southwest University of Science and Technology, Sichuan Guanmusiyang New Material Technology Co., Ltd.
    Inventors: Guanjun Chang, Li Yang, Yewei Xu, Baoxuan Chang, Shien Yang, Rui Yuan
  • Patent number: 11247945
    Abstract: An adhesive for moss and a method for preparing the adhesive are provided, wherein the method includes steps of: adding melamine, urea, attapulgite and sepiolite powder into a ball milling tank, and adding milling balls into the ball milling tank for ball milling; then collecting ball-milled materials; adding konjac glucomannan, chitosan and collagen into water and stirring, wherein during stirring, half of the ball-milled materials are added into the water; then adding latex powder, stearic acid and ammonium zirconium carbonate, and stirring, wherein during stirring, the other half of the ball-milled materials are added into the water. The adhesive for moss can be used for bonding moss with sufficient bonding effect, which is environment-friendly and will not harm the moss; meanwhile, the konjac glucomannan, the chitosan, the collagen attapulgite and the sepiolite powder which are contained in the adhesive can provide nutrition for the moss.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: February 15, 2022
    Assignees: Chengdu Institute of Biology, Chinese Academy of Sciences, Southwest University of Science and Technology
    Inventors: Yanbao Lei, Geng Sun, Dalin Zhu, Ke Chen, Yingxin Xue
  • Publication number: 20220032262
    Abstract: A preparation method of a bacterial cellulose-defective molybdenum disulfide (BC-MoS2-x) heterojunction material for treating radioactive wastewater is provided, including: preparing bacterial cellulose by the in situ growth technology of Acetobacter xylinum, and freeze-drying to obtain dried bacterial cellulose; carbonizing the dried bacterial cellulose to obtain carbonized bacterial cellulose; dispersing the carbonized bacterial cellulose into deionized water under an ultrasonic treatment; then adding thiourea and Na2MoO4.2H2O, dissolving under an ultrasonic treatment to obtain a reaction mixture, subjecting the reaction mixture to a hydrothermal reaction to obtain a BC-MoS2 heterojunction; and calcining the BC-MoS2 heterojunction in a tube furnace with an Ar/H2 atmosphere to obtain the BC-MoS2-x heterojunction.
    Type: Application
    Filed: March 3, 2021
    Publication date: February 3, 2022
    Applicant: Southwest University of Science and Technology
    Inventors: Wenkun Zhu, Tao Chen, Rong He, Fan Yang, Yun Dong, Qian Wang, Bo Liu, Rong Wang
  • Publication number: 20210355639
    Abstract: A vertical ground heat exchanger for reducing the temperature in the carbonaceous shale rock mass and preventing roadbed frost heave includes a heating mechanism, a heat releasing component respectively connected to both ends of the heating mechanism and a refrigeration heat exchange mechanism. The refrigeration heat exchange mechanism is connected to the lower end of the heating mechanism through a heat transfer pipeline and communicates with the heat releasing component. The heat releasing component includes a double-layer heat exchange tube component, a gas-liquid separator and a branch tube, wherein the double-layer heat exchange tube component is respectively connected to the both ends of the heating mechanism, the gas-liquid separator is connected to the double-layer heat exchange tube component, and the branch tube is connected between the gas-liquid separator and the refrigeration heat exchange mechanism. The double-layer heat exchange tube component includes an upper bellows and a lower bellows.
    Type: Application
    Filed: August 27, 2020
    Publication date: November 18, 2021
    Applicant: Southwest University of Science and Technology
    Inventors: Baolong ZHU, Xin LI
  • Publication number: 20210253805
    Abstract: A high-performance triple-crosslinked polymer and a preparation method thereof are provided. The polymer is obtained by curing and cross-linking a monomer having two epoxy groups, a cross-linking monomer and a functional monomer. The polymer contains a cross-linking network formed by covalent bonds and two types of multi-level hydrogen bonds with different strengths. The interaction strength between the covalent bonds and the two types of hydrogen bonds decreases in a gradient. The dilemma of the strength-ductility tradeoff in a high-performance polymer is overcome by forming a triple-crosslinked network with covalent bonds and multi-level hydrogen bonds with different strengths in the polymer. The dynamic and hierarchical hydrogen bonds are broken and recombined timely and continuously to concurrently maintain the complete structure of the polymer network and enable the polymer network to quickly respond to the transmission and dissipation of the external environment.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 19, 2021
    Applicants: Southwest University of Science and Technology, Sichuan Guanmusiyang New Material Technology Co., Ltd.
    Inventors: Guanjun Chang, Li Yang, Yewei Xu, Baoxuan Chang, Shien Yang, Rui Yuan
  • Patent number: 10564099
    Abstract: A method for detecting or comparing mechanical strength of macro-molecular polymer materials. The detecting method has the steps of measuring the mechanical strength and the maximum value of the fluorescence absorption spectrum of each of the plurality of samples to form a curve relationship or function relationship between the maximum value of the fluorescence absorption spectrum and the mechanical strength; measuring the maximum value of the fluorescence absorption spectrum of the target material, and using the curve relationship or the function relationship to obtain the mechanical strength of the target material. The plurality of samples and the target material are both prepared from a macro-molecular polymer, and the macro-molecular polymer may be composed of disulfonate-difluorobenzophenone, hydroxyindole and difluorobenzophenone as monomers, and the sulfonate groups of the disulfonate-difluorobenzophenone have metal cations.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: February 18, 2020
    Assignee: Southwest University of Science and Technology
    Inventors: Guanjun Chang, Li Yang, Zhongyuan Lu, Junxiao Yang
  • Publication number: 20180346650
    Abstract: A macro-molecular polymer and its preparation method. The macro-molecular polymer takes disulfonate-difluorobenzophenone, hydroxyindole and difluorobenzophenone as monomers for which a sulfonate group of the disulfonate-difluorobenzophenone is a metal cation. High-performance polymers can be obtained with crosslinked structure among molecular chains by a way of interaction of metal cations ??, and further to obtain a high performance polymer having good mechanical properties and stability. Furthermore, the polymer facilitates recovery and has good reproducibility and recycling properties.
    Type: Application
    Filed: January 30, 2018
    Publication date: December 6, 2018
    Applicant: Southwest University of Science and Technology
    Inventors: Guanjun Chang, Li Yang, Zhongyuan Lu, Junxiao Yang
  • Publication number: 20180348130
    Abstract: A method for detecting or comparing mechanical strength of macro-molecular polymer materials. The detecting method has the steps of measuring the mechanical strength and the maximum value of the fluorescence absorption spectrum of each of the plurality of samples to form a curve relationship or function relationship between the maximum value of the fluorescence absorption spectrum and the mechanical strength; measuring the maximum value of the fluorescence absorption spectrum of the target material, and using the curve relationship or the function relationship to obtain the mechanical strength of the target material. The plurality of samples and the target material are both prepared from a macro-molecular polymer, and the macro-molecular polymer may be composed of disulfonate—difluorobenzophenone, hydroxyindole and difluorobenzophenone as monomers, and the sulfonate groups of the disulfonate—difluorobenzophenone have metal cations.
    Type: Application
    Filed: January 30, 2018
    Publication date: December 6, 2018
    Applicant: Southwest University of Science and Technology
    Inventors: Guanjun Chang, Li Yang, Zhongyuan Lu, Junxiao Yang
  • Patent number: 10119005
    Abstract: A method for recovering, regenerating and repairing polymer. The method includes immersing a polymer in an acid solution so that hydrogen ions of the acid solution replace metal cations of the polymer to obtain an acid-treated polymer, and to realize the recovery of the polymers. Subsequently, the acid-treated polymer is immersed in an alkaline solution to obtain a base-treated polymer to realize the regeneration of the polymers. The polymer is composed of disulfonate-difluorobenzophenone, hydroxyindole and difluorobenzophenone as monomers, and sulfonate groups of the disulfonate-difluorobenzophenone have metal cations. The method replaces the metal cations with hydrogen ions to realize the recovery of the polymers and reduce environmental pollutions. The regeneration of polymers is realized by replacing the hydrogen ions with the metal cation, and resource recycling. Through the process of local repair, the service life of the product of polymers can be prolonged.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: November 6, 2018
    Assignee: Southwest University of Science and Technology
    Inventors: Guanjun Chang, Li Yang, Zhongyuan Lu, Junxiao Yang