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Final Acceptance Of A Batch Of Innovative Achievements R&D Projects

2024/12/25 19:29:00 0

　　 On December 22, 2024, the National Advanced Functional Fiber Innovation Center held a final acceptance meeting for a number of innovative achievements R&D projects in cooperation with Donghua University in 2024 in the R&D building. Mei Feng, Chairman of Jiangsu New Vision Advanced Functional Fiber Innovation Center Co., Ltd., Wang Yuping, Director of the Innovation Center, Xu Jinlong, Director of R&D, Wang Lixia, Director of Engineering Design, and other expert group members, as well as project leaders, attended the meeting.

　　 The meeting was hosted by Zhao Run, a doctor of the Innovation Center. At the beginning of the meeting, he briefly introduced the background, significance and impact of the establishment of the National Advanced Functional Fiber Innovation Center - Donghua University Innovation Achievement Project, and thanked the project teams of Donghua University for their fruitful research and development, production, market application and other support work.

　　 "Research and development of hemostatic antibacterial materials and medical products based on biological nanofibers" project

　　 Professor Hong Feng reported the progress of the project "Research and development of hemostatic antibacterial materials and medical products based on biological nanofibers". The project independently developed three key new technologies for the preparation of hemostatic antibacterial materials: high-efficiency electric drive composite technology of multi-functional gel film; Preparation technology of chitosan microsphere/bacterial nanofiber composite membrane that can encapsulate sustained release active factors and drugs; The biosynthesis technology of base cloth type composite gel is used to develop gel dressing, cold compress and mask. We independently designed and customized a prototype machine matching with the key technology of electric field driven composite. More than 9 new products such as TCNF/COL/CS have been designed, including antibacterial hemostatic sponge, composite gel high-efficiency synthetic electric field instrument, functional dressing for monitoring the process of wound healing, etc.

　　 The project has applied for 6 patents, including 5 invention patents and 1 utility model patent; Published 12 research papers, including 2 cover articles and 4 top papers of the first district of the Chinese Academy of Sciences; Cultivate 8 master/doctor talents.

　　 In addition, he participated in the "National Disruptive Technological Innovation Competition" sponsored by the Ministry of Science and Technology in 2022 with the dynamic preparation technology of bacterial nanofiber composite membrane, and won the award of excellence; Participate in the 2024 China International Industrial Expo (Shanghai) and receive an exclusive interview and report from Shanghai Science and Technology Daily, which has attracted the attention of many investment institutions; In 2024, the project leader presided over the 6th World Conference on Bacterial Nanocellulose, which won the praise and praise of scholars and company leaders from all countries, expanding the influence of project achievements.

　　 "R&D and industrialization of carbon fiber thermoplastic composites" project

　　 Associate Professor Zhu Shu reported the progress of the project "Research and Development and Industrialization of Carbon Fiber Thermoplastic Composites". By studying the functionalization and surface modification technology of carbon fiber surface, the molding process of thermoplastic composites, the defect formation mechanism and control methods in the preparation of carbon fiber thermoplastic composites, and the regulation and mechanism of carbon fiber surface modification on the condensed structure of the matrix, the project has mastered the quality control methods of the molding process of thermoplastic composite plates, This process forms an effective evaluation of the processability and reliability of typical thermoplastic composite plates.

　　 The project improved the interface interaction between CF and thermoplastic resin matrix, and the material bending strength and interlaminar shear strength (ILSS) increased by 70-100%. The molding and stamping process of aerospace thermoplastic composites was developed, the formation mechanism of defects was revealed, and the prediction and control methods of defects such as void quantification, interlaminar slip, fiber buckling, rebound deformation, and surface dry spots were established. And reduce the porosity to within 0.5%, meeting the requirements of aviation materials. An aviation thermoplastic carbon fiber composite plate production line has been built. A total of 3 invention patents were applied and 8 papers were published.

　　 Project of "Key Technology and Application of Copolymerization Nylon 6 Elastic Filament Preparation"

　　 Dr. Yuan Ruchao reported the progress of the project "Key Technology and Application of Copolymerization Nylon 6 Elastic Filament Preparation". Nylon 6 based thermoplastic elastomer with high content and high molecular weight soft segments was prepared by the "three-step" melt polymerization method, realizing the stoichiometric balance of functional groups in soft and hard segments, and improving the reaction activity between hard segments and high molecular weight soft segments; The introduction of high content and high molecular weight soft segments effectively improves the resilience of nylon 6 based thermoplastic elastomer; Based on the strengthening effect of hydrogen bond interaction on mechanical properties, a thermoplastic elastomer with higher tensile strength was synthesized. The tensile strength and glass transition temperature of the elastomer were improved without affecting the resilience.

　　 The project has prepared different kinds of nylon 6 based elastic fibers through melt spinning technology. The prepared nylon 6 based thermoplastic elastomer fibers have excellent resilience and mechanical properties, and have broad application potential in the textile field. A total of 2 invention patents were applied and 3 research papers were published.

　　 "Efficient Utilization of Straw Cellulose and Its Product Development" Project

　　 Researcher Li Zhaoling reported the progress of the project of "efficient utilization of straw cellulose and its product development". The project uses the pre hydrolysis technology to effectively remove the acetyl and glyoxylate groups on the side chain of hemicellulose, and generate acetic acid autocatalytic acid hydrolysis, providing a basis for the subsequent efficient separation of cellulose; Using the solubility parameter theory, the solubility of different hydrogen bond donors and hydrogen bond receptors was studied; The green and efficient preparation of straw cellulose was realized by one-step treatment of straw raw materials with a compound low eutectic solvent (DES).

　　 The project uses ultrafiltration membranes with different molecular weight of interception to control the treatment of low molecular lignin and monosaccharide, so as to achieve the directional interception of small impurities; To study the dissolution control technology of low molecular lignin, monosaccharide and other key impurities in the recovered solvent, improve the purity of recycled DES, and realize the efficient and repeated preparation of straw based biomass cellulose pulp. A total of 2 invention patents were applied and 3 research papers were published. ?

　　 At the end of the meeting, Mei Feng made a concluding speech and said that in the past year, various project teams have actively organized scientific research to tackle key problems, and made important contributions to complement the industrial technology weakness, adjust and upgrade the industrial structure, and accelerate the integration of the innovation chain industrial chain. It is hoped that the innovation project will serve as the cornerstone of the long-term cooperation and development between the project team of Donghua University and the innovation center, strengthen the in-depth exchanges and win-win mode exploration between the two sides, take technological innovation as the source power of industrial development, and jointly promote innovation in multiple fields through achievements transformation.

　　 As a national manufacturing innovation center, the National Advanced Functional Fiber Innovation Center has the strength and ability to pool industry resources, promote the collaborative scientific research and development of universities, research institutes, upstream and downstream enterprises in relevant fields of the industry, overcome key common technologies, and promote the rapid transformation of achievements Functional fiber materials and other fields have achieved fruitful results. We will actively focus on important basic research, applied basic research, industrialization research and other scientific issues of industry development to coordinate all forces and form a joint force to tackle key problems; By carrying out research on key technologies and products, we will gather all elements and life-cycle technologies of fiber manufacturing, comprehensively improve the ability of industrial autonomy and control, and help improve the overall efficiency of the innovation chain.

?? （ Source: National Advanced Functional Fiber Innovation Center ）