Polyester fiber will be more widely used in industrial textiles
From the perspective of product target market application, industrial polyester covers agricultural use, construction use, geotechnical use, household use, industrial use, medical and health use, automotive use, environment and safety use, packaging and covering use, protection use, and sports use. Use and other 12 categories. In Europe and North America, such fabric products are called Technical Usage Textiles. In 2010, the world’s consumer industrial fabrics will reach 33.8 million tons.
For more than 10 years, compared with clothing fabrics, industrial fabrics have developed more rapidly in Western Europe and North America. In particular, the finishing technology of polyester industrial yarn has advanced by leaps and bounds, with eye-catching highlights in terms of finishing cost and fiber performance-price ratio, laying a solid foundation for the advancement of industrial fabrics. Currently, mainland China is making the fastest progress in production capacity. In 2010, the proportion of chemical fibers in industrial fabrics will reach 90%, and polyester will be more widely used in industrial fabrics.
The progress of both long and short yarns has made breakthroughs
The product development of polyester industrial yarn mainly includes four aspects. First, based on the industrialized production of polyester industrial yarn, further optimize and improve its production process and specification requirements, and develop products suitable for special field requirements; second, It is to modify the raw materials, including copolymerization modification and inorganic addition modification, etc., to highlight a certain chemical or physical high-performance characteristics; the third is to change the composition of the raw materials, adopt new technologies and new processes, and produce polyester with relatively better chemical and physical properties. Polyester industrial yarn has undergone major changes; fourth, from the perspective of application, develop new products that are suitable for sustainable development, energy saving, consumption reduction, and environmental pollution reduction, as well as products that are more comprehensively competitive in the market compared to other chemical fibers.
Sinopec Shanghai Petrochemical Polyester Division has been researching and developing fire-resistant polyester and fiber products since the 1990s. After years of research, through screening of fire retardant agents and process research and testing, we are the first in China to achieve the production of phosphorus-based fire retardant copolyester chips on a continuous industrialized polyester device with low cost, high stability and excellent product quality.
Since the beginning of the 21st century, the synthesis technology of new polyester PEN (polyethylene naphthalate) has become mature and has begun to be supplied to the market in batches. PEN’s excellent performance is mainly reflected in its relatively high heat resistance and high chemical stability. It is an ideal material for manufacturing tire cords. At present, the only companies that produce PEN in the world are Japan’s Teijin Group, Toyobo, Mitsubishi Chemical, Italy’s M&G, the United States’ DuPont and South Korea’s Kolon and a few other polyester-related companies.
Under the premise of a substantial increase in output, the proportion of polyester short fiber used in industry is also growing. Polyester staple fiber for sewing threads has formed a good market system and has basically replaced imported products. In particular, ultra-high-strength and high-strength polyester staple fibers for finished sewing threads, mainly produced by Shanghai Petrochemical and Yizheng Chemical Fibers, have played a leading role in the development of the domestic short fiber sewing thread market. In the field of non-woven fabrics, high-shrink polyester short fiber is the main material of artificial leather base fabric. Depending on the artificial leather manufacturing process, the hot water shrinkage rate of high-shrink fiber can reach 80%, which is suitable for manufacturing high-density non-woven fabric products. The rise of the household fabrics market has provided a good showcase for polyester and polyester. For example, the use of asymmetric spinning and cooling forming methods to produce filler polyester hollow fibers has formed an economic scale.
In addition, developing new spinning technology and increasing the proportion of new spinning in production will be the focus of my country’s spinning technology progress and technological transformation in the future. For example, from the perspective of product market application, the clean yarn quality of vortex spinning has been well received, and it has been expanded in the field of knitted women’s clothing and underwear spinning. Raw materials suitable for vortex spinning such as polyester short fibers have a considerable market with the improvement of spinning technology. Air-jet spinning entered my country as early as 1985, and its labor costs are 4 to 5 times less than that of ring spinning, which is of greater significance in alleviating the current difficulty in recruiting workers and labor shortages in the fabric industry. At the same time, the air-jet spinning process is shortened, production efficiency is improved, and the number of machines used is reduced. Therefore, energy consumption can be reduced by 20% to 30%, and factory area can be saved by about 30% to 40%.
The industrialization of functional polyester began in this century
With the advancement of polyester production technology and the reduction of raw material costs, the application fields of polyester ultra-short fiber (main length is 2 to 12 mm) are constantly expanding. In the field of papermaking, polyester ultra-short fiber replaces some plant fibers and is used to make certain special papers, effectively improving the performance of special paper; in the field of road asphalt concrete, polyester ultra-short fiber plays the role of bridging asphalt and improves the performance of special paper. Improve the performance of asphalt roads and improve the service life of asphalt roads.
Functional polyester mainly includes fire protection, antibacterial, biodegradable, high elasticity, energy storage, etc. Research began in the 1980s, but real industrialization began in this century.
Nonwoven fabrics of phosphorus-based fire-resistant polyester short fibers are used for automobile interior decoration, and fire-resistant short fibers are used for fabrics in public places, such as sofas, curtains, etc., which have been used in batches and standardized applications. The production technology of long-lasting antibacterial polyester staple fiber has become quite mature in recent years. The antibacterial and deodorizing PET fiber, which is made by blending zeolite particles with highly effective bacteriostatic agents or metal ions and fiber-forming PET, can effectively inhibit and kill microorganisms attached to the fiber surface. The zeolite particles return toGive fiber new properties, such as promoting blood circulation in the human body and accelerating wound healing. Energy storage fiber (fluorescent fiber) is a new type of high-efficiency storage self-finishing material with rare earth ions as activator and alkaline earth aluminate as matrix. This material has significant advantages such as non-toxic and non-radioactive. Polyester staple fiber with storage function has a wide range of applications in construction and decoration, transportation, military fields, fire emergency, daily home life, low-level lighting and other fields.
New ideas for “environmentally friendly”
From industrial production to the present, polyester has gone through several stages: mass production, differentiation, functional modification, and the “environmentally friendly” stage that has attracted much attention in the new era.
The development of “environmentally friendly” polyester products mainly focuses on four major goals. One is to adopt new technologies and new processes to reduce energy consumption, material consumption and pollution in raw material synthesis and the entire finishing chain. For example, Shanghai Petrochemical adopts low-energy consumption domestic new polyester Synthetic technology reduces energy consumption by at least 30% compared with traditional processes; the second is to develop raw materials that replace petroleum resources to improve sustainability; the third is to modify fibers from the perspective of cloth raw materials to improve finishing performance and environmental protection performance; fourth, recycling of fiber products.
In recent years, many European and American companies have increased the research, development and industrialization process of degradable polyester, and some products have entered the commercialization stage. It is still in the research and development stage and pilot stage in China, but in recent years, companies such as Changchun Dacheng Group have joined forces with scientific research institutes and have made important progress.
Compared with traditional polyester, the main market goals and technological progress in the development of industrial polyester products are reflected in the upgrading of the existing fabric market (household, automotive decoration, etc.). For example, develop various special brands and improve certain physical properties of short fibers and special-shaped cross-section fibers for use in non-woven fabrics; make the fibers more environmentally friendly through chemical modification and more suitable for downstream users to improve efficiency, such as no heavy metal fibers, no heavy metal fibers on the body, etc. Colored fiber, fire-proof fiber, etc.; develop and expand new application fields, polyester industrial yarn is mainly reflected in improving fiber applicability, replacing or partially replacing nylon, viscose fiber and cotton, such as PEN/PET blend fiber, etc.; polyester BCF (Expanded textured yarn) is a model for product development in the field of non-workwear, especially in the North American market. The development trend is promising; the progress of melt-blown and spunbond technology has brought expectations for the development of polyester in the field of non-woven fabrics; with high added value and differentiation Chemical products lead the industrial market, such as various functional fibers and new polyester.
AAANHGMKJLOI87
Extendedreading:https://www.china-fire-retardant.com/post/9379.html
