Technical fabrics receive much attention from the industry
Industrial textiles are called “technical fabrics” abroad and are widely used in industry, agriculture, geotechnical construction, transportation, medical and health, aerospace and other industries. Together with clothing textiles and home textiles, they are also called textiles. of three categories. At present, the fields of application of industrial textiles are becoming more and more extensive, and they have gradually become a substitute for materials such as metal, plastic, paper, and asbestos. With the development trend of lightweight, high-performance, diversified and beautiful industrial materials, the uses of industrial textiles are expanding day by day, and the market demand is rising. In the next 10 years, industrial textiles will grow at a rate of more than 10%. Rapid development. It can be predicted that industrial textile fibers will account for a large proportion of textile fiber materials in the 21st century. According to data analysis from the China Industrial Textiles Industry Association, it is expected that by 2010, the total amount of fiber used in industrial textiles will reach 61.2 million tons, accounting for 17% of the total fiber processing volume, and the annual growth rate will still reach double digits.
What are the key technologies for the future development of industrial textiles? Mainly include: the development and industrialization of high-performance fibers urgently needed in industry and national defense, the industrial research and development of new polyester diversified technical varieties, the market application of new fibers and the processing technology and application of high-end composite nonwovens, etc., and Application technology of nonwovens for agricultural, medical and construction purposes.
Carbon fiber, aramid 1414, aramid sulfonate, and a new generation of ultra-high-strength and high-modulus polyethylene are high-performance fibers that are urgently needed for industry and national defense. In terms of its development and application, there is still a gap between my country and developed countries. Foreign countries have already achieved industrialization, but our country is currently at a stage where production is low, industrialization is difficult, and key technologies and equipment are insufficient. Domestic carbon fiber companies that currently have development and production capabilities mainly include Anhui Huawan Group, Shandong Tiantai Carbon Fiber Co., Ltd., etc.; the para-aramid 1414 polymer preparation technology has made a major technological breakthrough not long ago, and it is possible to form a certain industry production scale. However, technical difficulties require further breakthroughs.
The main companies that develop and produce include Jiangsu Haocheng Leather New Materials Co., Ltd., Hebei Silicon Valley Chemical Co., Ltd., Jiangyin Zhongsheng Special Fiber Co., Ltd., etc.; aryl sulfone fiber has mature technology and has independent intellectual property rights in my country. Production is expected to increase. The main companies that produce aramid sulfonate include Shanghai Tianlun Fiber Co., Ltd.; high-strength and high-modulus polyethylene is widely used in military and civilian applications, and the market continues to be promising. It is a promising high-performance product. The main manufacturers include Beijing Tongyizhong Special Fiber Technology Development Co., Ltd., Hunan Zhongtai Special Equipment Co., Ltd. and Ningbo Dacheng Special Fiber Company. Most of these enterprises that occupy a place in the high-tech field are private enterprises. It is not easy to invest their own money to set up factories and buy equipment to develop the fibers that the country urgently needs. At present, the technologies of various production and development enterprises are relatively confidential, and they are in a situation where they are isolated and fighting independently.
Industrial research and development of new polyester diversified technical varieties. Mainly include polybenzobisoxazole (PBO) with excellent performance and wide range of uses, polyester family represented by PTT, multi-tech varieties and degradable PLA (polylactic acid fiber) and Lyocell (new solvent method cellulose fiber) fiber etc. PBO fiber is a composite reinforcement material developed in the United States in the 1980s for the development of aerospace industry. It is known as the 21st century super fiber. Its trade name is Zylon. Its strength, modulus, heat resistance and Flame resistance is better than carbon fiber. PBO fiber has the characteristics of impact resistance, friction resistance and dimensional stability, and is light and soft, making it an extremely ideal textile raw material. The application fields of PBO fiber are very broad. Its filaments can be used as reinforcing materials for rubber products such as tires, tapes (conveyor belts), hoses, etc., as reinforcing materials for various plastics and concrete, as reinforcing components for ballistic missiles and composite materials, as tension members and fiber optic cables. Protective film for optical cables, etc. Short fibers and pulp can be used in friction materials, sealing gaskets, various resins, plastic reinforcements, etc. PBO yarn is used to make firefighting suits, furnace work clothes, welding work clothes, heat-resistant work clothes, anti-cut protective clothing, safety gloves and various sportswear, etc. For a long time, foreign companies have monopolized and banned the sale of its key intermediate 4,6-diaminoresorcin (DAR). Dalian Chemical Research and Design Institute successfully developed a new DAR synthesis process, breaking the technical blockade of foreign companies and taking a key step towards industrialized production.
In recent years, significant progress has been made in the industrial development of diverse new technology varieties of the polyester family represented by PTT. Because PTT (polytrimethylene terephthalate) dyes well, has good elasticity, is crisp, dry, easy to process, and has strong stain resistance, and has the performance characteristics of polyester, nylon and some spandex fibers, it can not only be used in fabrics, carpets, and nonwovens Cloth, etc., can also be used in new resin materials such as films and plastics, and its development prospects are very broad. Jiangsu Yancheng Naida Chemical Fiber Co., Ltd. is an early enterprise in the country that developed this. It has an annual output of about 800 tons. It is not large in scale, but its price is low and it is market competitive. PEN (polyethylene subebate) has certain development potential in industrial products such as tire cords due to its advantages such as high strength, low elongation, and good dimensional stability. At present, our country cannotIndustrialized production, most of the PEN distributed domestically is produced by DuPont. CO-PET is mainly used in the production of sea-island fiber and is a key variety of modified PET that urgently needs priority development.
In addition, the industrial research and development of degradable PLA (polylactic acid fiber) and Lyocell (new solvent method cellulose fiber) fibers and products have attracted attention. The United States, the European Union, Japan and other countries are all making full efforts to carry out industrial development. Research. PLA is a type of completely biodegradable polymer. It is a new fiber material successfully developed based on natural biological resources such as corn starch. It has the advantages of beautiful luster, comfort, durability, smoothness, and quick drying, especially Its superior biodegradability and applicability are praised by experts. Some scholars suggest that under the current background of energy shortage, China should immediately implement the research and development of new fiber materials using corn straw as raw material. Currently, only a few domestic companies are involved in this field.
It is understood that Wuxi Yihong Chemical Fiber Co., Ltd. (Wuxi Tianbaihe Textile Co., Ltd.) has equipment with an annual output of 300 tons and has good sales prospects. Loycell fiber, also known as Lyocell fiber. It is a new generation of cellulose fiber produced using new solvents and non-toxic processes. It has the properties of both human and synthetic fibers. There have been many achievements in product application and development in China, but there is an urgent need for development in the industrialized production of fibers. It is said that the short fiber project of Baoding Swan Co., Ltd. has been approved by the state; the 1,000-ton annual pilot project of the China Textile Research Institute has been launched in Henan. It is believed that industrial production can be achieved in the near future. AA
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