Zhongfu Shenying has been granted an invention patent: “A method for the directional control of the particle size of powder-based toughening materials used in aviation applications””

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According to data from the Tianyancha app, Zhongfu Shenying (688295) has obtained a new invention patent grant. The title of the patent is “A method for the directional control of the particle size of powder-based toughening materials used in aviation,” with the patent application number CN202310906154.6. The grant date is February 17, 2026. Patent Abstract: This application relates to a method for the directional control of the particle size of powder-toughened materials used in aviation. It involves adding polyvinyl alcohol of varying masses, each corresponding to powder-toughening materials of different particle sizes, to water; after stirring to dissolve them, solutions of polyvinyl alcohol with varying mass concentrations are prepared ； Thermoplastic plastic is added to an organic solvent; after stirring to dissolve it, the first solution is obtained ； Different mass concentrations of polyvinyl alcohol solution are added to the first solution respectively, and stirred until dissolved, thereby obtaining second solutions that correspond one-to-one with various powder toughening materials having different particle sizes ； After post-treatment of each second solution, powder toughening materials with different particle sizes were obtained ； Among them, the mass concentration of the polyvinyl alcohol solution is 1–10 wt%, and the volume average particle size of the resulting powder-toughened material is 4–60 μm. This application achieves controlled regulation of the particle size of the powder-toughened material by altering the mass concentration of the polyvinyl alcohol solution; its adjustment method is simple and easy to implement. Since the beginning of this year, Zhongfu Shenying has obtained 14 new patent approvals, a 366.67% increase compared to the same period last year. Based on the company’s financial figures for the first half of 2025, the company invested 75.5379 million yuan in research and development during that period, representing a 14.22% increase compared to the previous year.