Through the green process of the whole process and the functional compounding of the product, the efficient and stable catalytic effect of polyester esterification and polycondensation is realized, the quality standard of antimony free polyester fiber is established, and the technical specification system of titanium catalyst polymerization and spinning process is unified.
1）R&D direction
Develop new hydrolysis resistant and environment-friendly titanium catalyst to replace antimony catalyst to prepare environment-friendly polyester fiber; The catalytic mechanism of titanium catalyst, reaction kinetics of catalytic polyester polymerization and its effect on the properties of polyester fiber were studied; Solve the problem of high quality polyester melt direct spinning filament（FDY，POY）Engineering and technical problems, forming a complete set of processes suitable for industrial production; Finally, the polymerization experiment, pilot scale up experiment and achievements transformation are completed and put on the market; To establish the product quality standard of antimony free polyester fiber.
2）R&D progress and achievements
The evaluation and comparison of the catalytic performance of titanium based catalysts at home and abroad were completed, and a new type of catalyst with hydrolysis resistance and high catalytic efficiency was developed and mass production was realized; Complete the research on the catalytic mechanism and polymerization kinetics of titanium catalyst; Grasp the influence of catalyst content on esterification and polycondensation; The color control and stabilization technology of titanium catalyzed polyester were solved; The engineering technology of large-scale continuous polymerization of titanium catalyzed polyester and direct spinning of titanium based polyester melt were developed（FDY，POY）Engineering technology, forming a complete process package; Ongoing“Study on the Catalytic Activity, Hydrolysis Resistance of Titanium Catalysts and the Serial Standards for the Determination of Trace Titanium in Polyester Materials”； Participated in the formulation of antimony free polyester fiber related industry standards4Antimony free polyester low elastic yarn, antimony free polyester drafting yarn, antimony free polyester pre oriented yarn, and fiber grade antimony free polyester chip. Application for authorized invention patent4piecePreparation of Environmental Protection with Good Chromatic Quality in Continuous Polymerization UnitPETPolyester method, a titanium composite catalyst for polyester synthesis and its preparation and application, a preparation method and application of cationic dyeable flame retardant polyester masterbatch, and a preparation method and application of nano titanium catalyst for polyester synthesisutility model1pieceAn Automated Experimental Device for Polyester Polymerization。
3）Medium test certificate
Optimize polyester melt transportation and distribution, spinning and post-processing process, form titanium catalyst for direct spinning of polyester melt, develop titanium polyester filament and series of differential polyester products, varieties arePOYproduct75/72、150/144Etc,FDYproduct75/36And passedSGSauthentication.2022year6month10On August th, the Jiangsu Provincial Department of Industry and Information Technology held a meeting in Shengze, Suzhou, jointly undertaken by the National Advanced Functional Fiber Innovation Center, Jiangsu New Horizon Advanced Functional Fiber Innovation Center Co., Ltd. and Donghua University“Preparation of titanium catalyst and complete technology of antimony free polyester melt direct spinning filament”The appraisal committee believes that the technology is at the international advanced level. The project has been industrialized in Shenghong, Xinfengming and Hengyi industrial units.