Chemical Fiber: Breakthrough Technical Bottleneck

　　 chemical fiber Industrial Technology Innovation Strategic Alliance

Steps to start nine strategic projects

Founded in November 2008, it was led by China Chemical Fiber Industry Association and China Textile Science Research Institute. It was composed of major enterprises in the industry and differentiated enterprises, universities and research institutes with characteristics. At present, the capacity of the alliance enterprise accounts for 32% of China's polyester filament yarn, accounting for 22% of the total output of the chemical fiber.

Main achievements

In early 2010, the alliance clearly put forward nine major projects in 2010~2012 years, including polyester wastewater, acetaldehyde recovery, super Imitation cotton, new solvent method, cellulose fiber and so on. Among them, the "polyester waste water acetaldehyde recovery" is the first to start the project within the alliance. The alliance has carried out research and Exploration on the business operation mode under the alliance framework, and set up acetaldehyde recovery company. 11 members of the alliance signed an agreement to invest in polyester waste water acetaldehyde recovery project, and the project is being implemented.

In August 2010, the alliance was based on chemical fibre. industry chain The situation was formulated and the first technological innovation roadmap of the alliance, the "new generation of polyester fiber technology roadmap", was adopted by the alliance Council. It plans to launch a new generation of polyester industry technology within the alliance.

Under the guidance of the plan, the chemical fiber alliance, as the lead unit of the project, has organized the application of the "National Science and technology support plan" in 12th Five-Year, which is a priority project of "super cotton synthetic fiber and its textile industrialization technology development", and has been demonstrated by experts. Optimization, high proportion of modified components online addition and high efficiency dispersion, hydrophilic polyester system stable spinning, fiber morphology and mechanical properties control, 1,3- propylene glycol high activity and highly selective catalytic system controllable amplification preparation, PTT polyester continuous polymerization, energy saving and emission reduction in PET and PTA production process, and other key technologies restricting super cotton imitation polyester fiber industrialization, as well as super Imitation cotton fiber spinning, weaving, printing and dyeing and surface treatment technology, etc., to achieve large-scale industrialization preparation of super cotton imitation PET fiber and industrialization of domestic PTT fiber, and establish a super Imitation cotton polyester technology innovation chain and industrialization technology integration system from raw materials to textiles, as well as product evaluation methods and standards, and develop a series of products to achieve market application. The overall goal of the project is to overcome the molecular structure and system composition of the super cotton like PET polyester.

At present, the super Imitation cotton polyester varieties are mainly classified into three categories: high hydrophilic, hydrophilic fine denier and easy to stain. The development of these three kinds of filament and staple fiber basically covers the key common technologies to achieve super cotton imitation, and the goal is to replace cotton yarn and cotton fiber. In addition to the development of fiber function, the key point of the development of super Imitation cotton polyester industrialization technology lies in the industrialization of continuous high polymerization polyester fiber through the stable addition and controllable polymerization of high proportion modified components in the industrial continuous spinning device. The technology and application of super Imitation cotton are expected to replace millions of tons of cotton, effectively alleviate the demand for textile materials for cotton fiber, and alleviate the serious competition in polyester polyester industry and the low added value of textile products.

"12th Five-Year" target

As one of the 56 strategic alliances for industrial technology innovation to be carried out by the Ministry of science and technology, chemical fiber The overall goal of the alliance is to solve the key and common technical problems faced by the industry in terms of energy saving, emission reduction, quality improvement, consumption reduction and circular economy development. With the organic integration of the contracting parties, such as production, learning, research and application, a complete technological innovation chain is constructed from the whole process of raw material development, spinning, weaving, dyeing and finishing to fabric development. Through technological innovation and integration, industrial operation, industry standard setting and the implementation of intellectual property strategy, the technical bottlenecks hindering the progress of the industry are broken through, and a new generation of chemical fiber industrialization technology characterized by high function, high quality, low energy consumption and low emission is developed. The technology and product upgrading services of the chemical fiber industry are promoted, and the international and domestic competitiveness of the alliance enterprises is enhanced.

Xuzhou Si Ke difference Fiber Technology Co., Ltd.

One step method is the only one with different shrinkage.

Silk is the only domestic R & D and production unit specializing in the one-step process of different shrinkage and mixed filaments. It is the key high-tech enterprise of the national Torch Program, the provincial private technology enterprise, the provincial innovative enterprise and the provincial high growth enterprise. The company attaches great importance to technological innovation and new product development, and now has a relatively complete system of technological innovation platform management, including the first private enterprise of China's private textile industry workstation, and Jiangsu multi mixed fiber manufacturing engineering and technology research center.

Main achievements {page_break}

During the "11th Five-Year" period, the one-step PET fiber reinforced composite filament made by the company was listed as the national key new product by the Ministry of science and technology, the Ministry of environmental protection, the Ministry of Commerce and the General Administration of quality supervision. It was also named as the famous brand product of Jiangsu Province, the high-tech products of Jiangsu in 2008 and 2009. The 75dtex/49f one-step fine denier composite shrinkage fiber manufactured by the company in 2009 was appraised as a high-tech product by the Jiangsu provincial science and technology department. In 2010, the company's "annual output of 30 thousand tons, one-step differential shrinkage PET composite fiber" and other projects were included in the national torch plan.

Since its establishment, the company has focused on the construction and protection of intellectual property rights. The company now has 25 patents for inventions and utility models, and the registered trademarks are "SHILK" and "logo". The company has formulated the product enterprise standard. According to the requirements of the Ministry of industry and the Chinese chemical fiber industry association, the technical standard and method standard of the product of different shrinkage PET hybrid fiber is being drafted.

The company adheres to the development policy of "technological innovation and technology leading", and has made significant breakthroughs in new product development and new technology application. In the past few years, Jiang Shicheng, academician of the Chinese Academy of engineering, led a joint research team with Donghua University and the Chinese Academy of textile science. He worked together with the Beijing Zhongli Machine Engineering Technology Co., Ltd. to overcome the technical problems which have not been solved for many years in Germany, such as Bama and Heath Hao. In April 2008, the expert group of academician Ji Guobiao of the China Textile Industry Association identified that the key technology and equipment were successfully developed in one step process. In particular, the technology of multi winding coefficiency is the first time in the world to achieve one step mixed fiber 24 head / bit spinning and winding. Its core technology has shown that it has the novelty of POY/FDY one-step coupling process, precise control technology of fine denier shrinkage fiber structure, tension matching and stability control of composite points, high-speed multi network technology, and 24 head / winding technology.

Through the improvement of production technology and technology, the quality and variety of the products produced by strke have been leaping forward. The main products cover all-optical, semi glossy, bright ultra fine denier fibers, cationic composite wire products, and ITY series of functional differential products. The production of multi mixed fiber composite wire (compared with the two step method) has the advantages of constant length, uniform evenness, stable color absorption, easy processing for downstream enterprises, reducing the joints and saving raw materials in the processing process, greatly improving the efficiency of the post processing process, reducing energy consumption by 30%, saving 47% of the land occupation, occupying 45% of the plant, and reducing the cost of 1500 yuan / ton. The fabrics produced by the SHK fiber are various and unique, and are suitable for processing high and middle grade wool like, imitation hemp, imitation silk and other fabrics.

"12th Five-Year" target

Under the general trend of development of chemical fiber industry, he put forward the strategic line of changing products from "quantity" to "technology type", and put forward the technical research of strengthening multi-functional mixed fiber (antistatic fiber, high shrinkage fiber, flame retardant fiber and anti pilling fiber), special functional amorphous nanocrystalline alloy, organic differential composite fiber, special fine denier and super fine dyed bicolor blended yarn, POY composite fiber composite yarn with different cross section, and high grade imitation silk.