Research progress of polyester fiber in the world

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The analysis of the current situation of domestic chemical fiber industry shows that in order to participate in international competition, it is necessary to further develop the application fields of polyester products, including polyester non fiber application fields. Development and production of modified polyester chips and increase the development of polyester fiber products, such as functional fibers, polyester industrial fibers and new polyester fibers (PTT, PBT, pen)

in 1998, the application proportion of world chemical fiber in the three major fields of clothing, decoration and industry was 31:32:37. At present, the application proportion of China's chemical fiber in the three major fields of clothing, decoration and industry is 65:20:15, so there is a big gap with the international level

with the progress of world science and technology and the development of world industry, synthetic fiber, especially polyester fiber, has developed rapidly in quantity, but it can not meet people's requirements in performance and function. People have developed a large number of differentiated, functional and high-performance synthetic fibers. At present, foreign countries have made great progress in the development of differentiated and functional polyester fibers. For example, in Japan, Shingosen got rid of the era of imitating natural fibers in the 1980s and moved towards the current "super real" new synthetic fibers At this stage, in terms of polyester fiber, such as super bulky fiber, super drape fiber, super soft fiber, fragrance fiber, anti radiation fiber, etc.; the varieties of synthetic fiber recently developed in the United States are mainly elastic fiber, industrial silk, carpet and nonwovens. In the aspect of polyester fiber product development, we not only pay attention to the development of polyester industrial yarn and nonwovens, but also pay attention to the development of polyester fiber for clothing and a variety of differentiated fibers, such as improving the luster of fibers. Adding different additives, fibers with different cross-section shapes and different fiber numbers, polyester flame retardant filament, hollow polyester filament and low melting point polyester filament. South Korea has recently developed functional fibers and industrial fibers, such as high modulus, low elongation and high strength polyester yarn, conductive polyester yarn, polyester microfiber, etc. Recently, the latest researches of many international enterprises include:

sinco engineering company has developed the correct use method of a polyester ring stiffness testing machine with high elastic modulus and the ordinary protective filament of the equipment. It is made of aromatic polyester tree, mainly composed of aromatic acid, fatty alcohol and aromatic tetralin dianhydride with polyester functional group. The elastic modulus of the polyester filament is as high as 30gpa, and the breaking stress can exceed 400MPa

moechst trelira company has developed a kind of hydrolysis resistant polyester staple fiber and filament. During production, the carrier polymer, end group capturing agent and fiber forming polymer are transported to the spinneret, and then sprayed from the spinneret hole. After cooling, the filament is solidified. The polymer carrier has no end group, so it can react with the end group capturing agent. According to Hoechst AG, the prepared fiber has high strength and low flammability

akzo Nobel NV has developed a polyester fiber and yarn with high pilling resistance. In production, the polyol block copolymer is uniformly added to the polyester mixture as the separation phase. The polymer with special formula contains at least 90% of the moles of polyethylene terephthalate. The polymer is added after the copolymerization of the polyester mixture, and its weight ratio is% when the polymer and polyester mixture are uniformly mixed, the polyester fiber with this special performance can be prepared by ordinary spinning method

pupont company has developed a production process for producing polymethyl terephthalate continuous filament. The production process includes extruding the molten polymer from the spinneret hole to form the primary filament, cooling the filament with cooling air, applying oil to the filament, heating and drafting the filament, and then passing the filament through a nozzle with hot fluid, where the filament is deformed and rolled in three-dimensional volume under the action of heated air flow Then the filament is cooled and wound into finished silk

allied signal company has developed polyester yarn applied to tire cord. This kind of yarn has high strength and stable size. During production, the molten and spinnable polyethylene terephthalate melt is extruded from the spinneret hole and continuously increased by environmental protection to form primary silk. The primary silk passes through a slow cooling zone and a fast cooling zone, where the primary silk is rapidly cooled and solidified, and then the cured silk is drawn to obtain The polyester yarn with a certain degree of crystallinity and different orientations can be used in a wider range of applications. Finally, the finished yarn can be made by thermal drafting

shakevpeave company has developed a polyester monofilament, which is prepared by melt spinning of high-temperature mixed resin. The mixed resin consists of high-temperature polyester resin, polyethylene terephthalate resin and high-temperature stabilizer. This polyester monofilament has very good high-temperature resistance and resistance to thermal degradation

Taiwan, China has made some progress in developing new polyester products. In addition, great progress has also been made in the development of new polyester fibers, such as polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) and polyethylene terephthalate (pen), which are important varieties of polyester fibers and can compete with polyethylene terephthalate (PET) in this century

with the needs of China's economic development, people have higher and higher requirements for the performance of synthetic fibers. At present, there are some new varieties abroad, which are basically available in China, such as profiled, hollow, composite, fine denier and ultra-fine denier. Three different mixed fibers, cationic modified polyester chips and filaments, some of which have formed a production scale. The development and progress of functional polyester fiber is also rapid, such as flame retardant, anti-static, anti ultraviolet, heat preservation, water absorption, antibacterial and electromagnetic wave shielding functions. Large enterprises and research institutes have gained successful experience in the development of these new products. At present, the development of chemical fiber production technology and equipment is towards higher speed, high efficiency and quality, large-scale continuous short-range, automatic labor-saving, one machine multi-purpose flexibility, fine denier composite multi-functional equipment unit structure modularization. We have also mastered key technologies in developing new varieties of polyester fibers, such as microfiber spinning technology, three different fiber spinning technology and post-processing technology, composite fiber and composite fiber mixing technology. These technologies have laid a foundation for the development of differentiation and functionalization of polyester fibers

the development of new products and technologies for polyester fibers is a process of gradual mastery and maturity. In order to make new products enter the market as soon as possible, we should pay attention to organizing the "one-stop" development and application of products, strengthen market research, and do a good job in the development of new products under the market orientation

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