Research and develop macro quantitative nanofiber manufacturing production line with independent intellectual property rights, and establish the industrial chain system of nanofiber and its products; Expand the application coverage of nanofiber products, comprehensively improve the diversity and functionality of products, and develop their applications in high-end technology fields such as electronics, environment, energy and biomedicine.
1）R&D direction
The key technologies of electrospinning and macro preparation of biological nanofibers were studied; Micro processing and precision forming technology of nano fiber materials; Development and application of functional nano fiber materials; Establish product characterization and application evaluation system and relevant standards.
2）R&D progress and achievements
Research on melt differential electrospun nanofiber filament technology and equipment, engineering prototype design has been completed, and is being processed and manufactured in the factory; Development of hemostatic and antibacterial materials and medical products based on biological nanofibers, and preparation of antibacterial medical hydrogel with bacterial nanocellulose as raw material and substrate/Foam sponge dressing, alginate nano cellulose composite antibacterial dressing, biodegradable and absorbable fast hemostatic materials, key technologies related to maturation, and technology industrialization.
Research on high protective nanofiber membrane and its preparation technology: design of wide gate width multi nozzle electrospinning device, research on control of nanofiber diameter and nanomembrane structure, solution recycling technology in continuous preparation of nanofibers
Research and development of a new multifunctional protective nonwoven material hybrid with micro nano structure silver graphene: through graft modification of graphene oxide, the functional groups and molecules grafted are used to capture the precursor of nano silver, and the graphene oxide and silver ions are reduced by reduction to produce micro nano structure silver/Graphene hybrid agent. Solve the problems of dispersion and combination, exclusion and aggregation in the composite process of nano silver and graphene, and give play to the synergistic resistance of nano silver and graphene/kill/Bacterial and viral inhibition and multiple functions; Solve the problem of hybrid agent agglomeration in polymer and blocking the spinneret channel, realize the homogeneous dispersion of hybrid agent and in-situ hybrid fiber forming polymer with good spinnability; In the melt blown spinning process, the micro hybrid agent layer is compounded on the surface of the nascent nonwoven fiber on line to endow the nonwoven material with the characteristics of multi effect functions and strengthen the functionality of the surface layer, and realize the long-term multi effect functions through post-treatment.
Research on melt differential electrospun nanofiber filament technology and equipment: develop melt electrospun technology and device that can continuously form filament; Select appropriate fiber forming polymer such as polypropylene as the experimental substrate to study the influence of different viscosities on electrospinning, and study the electrospun continuous fiber forming process, the relationship between size and process conditions, filament unevenness and control means; Feasibility and process technology of primary oriented drawing of tow, with emphasis on bunching technology, oiling technology, heat pipe heating technology, winding technology, etc; The relationship between the crystallization, orientation and mechanical properties of pre oriented yarn and the device design and processing conditions was studied.
3）Medium test certificate
Develop nano fiber material structure design technology, high-quality macro stable nano fiber preparation technology, functional nano fiber stable preparation technology, efficient forming complete technology and equipment, and verify with Beijing University of Chemical Technology, Dalian Ruiguang and Beijing New Materials Research Institute to apply high-performance and high safety emergency protection products，And held“Key Technology and Product Application Development of High Performance Nanofiber Membrane for Protection”The appraisal committee believes that the technology is at the international advanced level.
We jointly developed the instantaneous pressure relief technology with Donghua University to prepare polyolefin microfiber assemblies, and conducted ongoing tests in Dangsheng, a cooperative unit.