This project belongs to the field of new textile materials.
my country is a major producer and consumer of polyester (PET) in the world. Every year, it needs to import a large amount of refined terephthalic acid and ethylene glycol from abroad for polyester (PET) production. Since almost all of the refined terephthalic acid and ethylene glycol used in the domestic and foreign polyester (PET) industrial production come from petroleum. Due to the shortage and non-renewability of petroleum resources, the utilization of renewable biomass resources is accelerated. In particular, the use of non-edible renewable biomass resources to prepare polyester (PET) is currently a hot research topic for domestic and foreign companies, which is of great significance for saving petroleum resources, reducing carbon dioxide emissions, and promoting the sustainable development of the polyester (PET) industry. my country's "12th Five-Year Plan" National Strategic Emerging Industry Development Plan,"12th Five-Year Plan" Development Plan for Chemical Fiber Industry "and the upcoming" 13th Five-Year Plan "all regard the development of biomass chemical fibers and their raw materials as important special items. content.
At present, biomass ethylene glycol, the raw material for biomass polyester chips, mainly comes from Dacheng Company's fermentation of plant-based corn stalks to obtain glucose, and then hydrocracking to obtain polyols, thereby obtaining biomass ethylene glycol. Using corn straw as raw material can effectively reduce carbon dioxide emissions. The reuse of corn straw with new technologies will help achieve carbon and alkali emission targets. At the same time, the use of non-edible renewable biomass resources can stop competing with the people for food as much as possible: traditional phytochemicals, which use edible crops as the main raw material, are currently facing more and more public opinion and policy pressures and restrictions, and operating risks are increasing., and new technologies using corn straw as raw material will find a good way out for the development of phytochemicals.
This project designs and develops efficient and highly selective Pt-Ti composite catalysts to solve the problems of many polymerization side reactions, poor thermal stability, and easy degradation. It also adopts special low-viscosity, high-throughput filtration technology to control polymerization engineering and stability with efficient and short process. Through the independently developed bonding and melt mixing technology of nanomaterials and polymers, the third monomer SIPE is added to modify the copolymerization. By designing the shaped cross-section of melt-spun fiber and special forming processing technology (temperature field, stress field, velocity field, etc.), developing technology for controlling spontaneous agglomeration of nanoparticles under high temperature processing and external field, and through the technical transformation of multiple varieties of flexible production equipment, developed biomass-functional polyester fiber with both functionality and comfort. Because it contains 97.5% biomass ethylene glycol and 2.5% polyol, the synthetic biomass fiber has the characteristics of soft hand feeling, good resilience, low-temperature dyeing, and good antistatic. At the same time, combined with the cool fibers that have won the second prize for technological invention in Shanghai City, biomass cool fibers have been developed. After testing, the fibers meet the assessment of GB/T 201655-2008.8 moisture absorption and quick drying of textiles.
The project has applied for 1 invention patent and 2 utility model patents for the core technology, both of which have been authorized. The project has been recognized as the Shanghai City High-tech Achievements Transformation Project, and the technical indicators of the products have established corporate standards.
Biomass polyester fiber of this project is a brand-new "low-carbon, environmentally friendly, and green" chemical fiber fiber. It is proposed against the background of my country's proposal to transform from a major chemical fiber country to a strong chemical fiber country. It can reduce my country's dependence on international crude oil and lead the concept of low-carbon and environmentally friendly society, which is in line with the direction of technological upgrading and industrial structural adjustment of my country's textile industry, and has very broad market prospects.