Patents by Inventor Jingmin Han

Jingmin Han has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11820711
    Abstract: The invention discloses an environment-friendly cement self-repairing system, and its preparation method and application. The preparation method comprises the following steps: adding a shell curing agent into deionized water to prepare solution 1, adding an inorganic nano emulsifier into deionized water, ultrasonically dispersing, then adding polysaccharide-shell, and uniformly stirring to obtain emulsion polymerization aqueous phase; adding epoxy diluent into epoxy resin, and uniformly stirring; obtaining an emulsion polymerization oil phase; mixing the emulsion polymerization aqueous phase and emulsion polymerization oil phase, and stirring to obtain uniform emulsion; dropping the uniform emulsion into solution drop by drop by using pendant drop method, stirring until the droplets are shaped, then filtering, washing with deionized water, and drying to obtain self-repairing capsules; next, mixing with an environment-friendly curing agent to obtain an environment-friendly cement self-repairing system.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: November 21, 2023
    Assignee: TIANJIN UNIVERSITY
    Inventors: MiaoMiao Hu, Yujie Ying, Jintang Guo, Jingmin Han
  • Publication number: 20230295044
    Abstract: The invention discloses an environment-friendly cement self-repairing system, and its preparation method and application. The preparation method comprises the following steps: adding a shell curing agent into deionized water to prepare solution 1, adding an inorganic nano emulsifier into deionized water, ultrasonically dispersing, then adding polysaccharide-shell, and uniformly stirring to obtain emulsion polymerization aqueous phase; adding epoxy diluent into epoxy resin, and uniformly stirring; obtaining an emulsion polymerization oil phase; mixing the emulsion polymerization aqueous phase and emulsion polymerization oil phase, and stirring to obtain uniform emulsion; dropping the uniform emulsion into solution drop by drop by using pendant drop method, stirring until the droplets are shaped, then filtering, washing with deionized water, and drying to obtain self-repairing capsules; next, mixing with an environment-friendly curing agent to obtain an environment-friendly cement self-repairing system.
    Type: Application
    Filed: March 17, 2023
    Publication date: September 21, 2023
    Inventors: MiaoMiao Hu, Yujie Ying, Jintang Guo, Jingmin Han