Abstract: This article briefly introduces the natural antibacterial pure chitosan fiber-Hystrore. It is made from high-purity chitosan as raw material, which is produced through clean process and green spinning. The paper introduces the breakthrough of key technologies in Hayesmore industrialization in detail and further elaborates the application of Hayesmore in textile, aerospace, military, tobacco and medical fields. Hayesmore Chief Engineer Zhou Jiacun Keynote: Hayes Moore, biological properties, thixotropic fluids, spinning grade high quality chitosan, high spinnability, high shear direct reaction, composite quick degassing, large High-pressure high-density extrusion extrusion, partition high-density large-diameter spinneret, Pingshui flow high temperature solidification, Reciprocating countercurrent washing, Applications Foreword: biomass fiber is the strategic direction of sustainable development of resources, chitosan fiber: rich in raw materials , Is a kind of functional fiber with both natural antibacterial activity and excellent biological properties. It is a kind of functional fiber that is safe and has a variety of biological activities. It has become the world's most dominant species of marine biomass fiber. Due to the low overall level of production technology and equipment, it has not been able to break through the bottleneck of scale and high quality for a long time and seriously affect the industrialization and application. Hayes Moore Biological Technology Co., Ltd. to meet the challenge, 100-ton pure chitosan fiber production line based on in-depth study and practice, the use of ultra-high viscosity, high degree of deacetylation of high-quality chitosan as raw material, Achieve multi-regional spin-grade high-quality chitosan controllable extraction, high shear preparation of high spinnability chitosan spinning liquid, high-pressure high-pressure high-density extrusion, uniform fiber forming and other key technologies of the whole industry Breakthrough, the establishment of the world's first kerosene energy-efficient pure chitosan fiber spinning production line, the production of continuous stability, green clean, this high-quality pure chitosan fiber called - Hayes Moore, China's shell poly Industrialization of sugar fiber to the forefront of the world level. Zhou Jiacun chief engineer to interview the Assembly a Hayes Moore performance study 1, performance description 1.1 excellent physical properties: Hayes Moore is a white pearl luster of the fiber, non-toxic and tasteless, insoluble in water and alkali solution, soluble in Acetic acid, hydrochloric acid solution and most organic acid solution, has good permeability and moisture absorption and moisture retention, water retention up to 140%. Hayes Moore's main quality indicators, dry fracture strength reached 1.7CN / dtex, dry elongation of ≥ 12%. At the same time using the fiber for the soft treatment process, so that the product is both soft and flexible, with a variety of fiber spinning high-quality blended yarn and non-woven fabrics, made of high quality medical dressings, daily textiles, also Can be spun into medical supplies alone. 1.2 excellent biological properties: Hayes Moore is a linear polymer polysaccharide compound, the basic component of glucosamine, the molecule contains both free amino and hydroxyl, especially with a positive charge to make it more active chemical properties, with moisture Deodorant, adsorption chelation, bacteriostasis and mildew, but also has hemostasis, soothing wound pain, reduce scar and excellent biocompatibility, non-immunogenicity and other biological activity. Pure chitosan fiber molecular structure as shown below: 2, compared with other similar products 2.1 foreign development status 1926 knwike first made of chitin fiber; in 1980 Japan's Miharu Chemical Industries pioneered the chitosan fiber In 1995, Fuji Textile Co., Ltd. added chitin to viscose to make antibacterial fiber. In 1999, Chitosan Co., Ltd. established a production line of chitosan fiber. Relevant departments statistics that these are not mass-produced now, all to our country to seek chitosan fiber. 2.2 The status quo of domestic development Chinas chitin and chitosan research started relatively late, in the 1980s, Donghua University Chitin fibers began to study and made China's first chitin fiber patents. Until now, there are three or four domestic manufacturers of chitin and pure chitosan fibers, and there is no solution to the engineering of production. Therefore, the output and quality are limited. Second, the industrialization of research and breakthroughs 1, industrialization bottleneck As a new type of biomass fiber, chitosan fiber development process at home and abroad to maintain the basic synchronization. In 1995, Japan Fuji textile chitin added viscose made of antibacterial viscose fiber. In 1999, South Korea Chitin Company established a production line of 150 Kg daily pure chitin fiber. DuPont uses liquid crystal spinning of chitin and its derivatives. Domestically, Qingdao Instant Group built a production capacity of 80 tons of chitosan fiber in 2000. In 2007, Hayes Moore Biotechnology Co., Ltd. established an annual output of 100 tons of chitosan fiber production lines. In general, the development of chitosan fiber is in the stage of industrial formation with limited production capacity. In addition, the high degree of deacetylation, spinning grade chitosan in solution poly-charge effect makes the spinning solution viscosity is too high, affecting the spinning liquid delivery and extrusion molding, lower fiber strength, less curl, saturation than Poor, spinning and non-woven processing difficulties, seriously affecting the industrialization and promotion process. The main reason is that the overall production technology and equipment at a low level hovering, long-term can not break the bottleneck of large-scale and high quality. On the other hand, the development of chitosan fiber mainly faces the problems of raw materials and market development. The spinning liquid is unstable due to the difference of the types and quality of crab shells and shrimp shells. At present, most imported crab hocks are used as raw materials for extraction, Limited, it is difficult to expand production. Efficient extraction techniques must be developed to extend the resources required to achieve the spinning grade, such as other crabs and crayfish. Market development, chitosan fiber underwear, women's products and other products have a bright future in the medical, aerospace field has a special purpose, but poor basic mechanical properties of fiber, post-processing difficulties, difficult to apply, we must enhance the mechanical properties of fiber or development Special post-processing technology. 2, technological breakthroughs in industry: 2.1 spinning quality controllable extraction of high quality chitosan technology. Raw materials is a bottleneck restricting the development of the entire industry, how to solve the diversification of raw materials is to protect the industrial development of the premise. Due to the huge differences in the molecular weight of shrimp and crab shells, especially in shrimp and crab shells with short growth cycle in freshwater, the inherent chitin has low molecular weight, which effectively controls the extraction of high quality chitosan for spinning. Through thousands of tests, we studied the composition, microstructure, molecular weight, distribution and acid-base mechanism of many shrimp and crab shells. By screening multiple shrimp and crab shells, we obtained shrimp and crab with similar composition Shell, after the flexible controllable process, two decalcification, degreasing and unique deacetylation technology to improve the quality and efficiency of cod crab chitosan, the successful realization of other crabs, crayfish and other resources spinning shell with poly Sugar extraction, expanding the spinning grade chitosan resources. 2.2 high spinnability chitosan spinning solution preparation technology. In-depth study of deacetylation of chitosan, viscosity and dissolution, degradation mechanism, the development of high-shear chitosan direct reaction, dissolution integration technology to achieve high degree of deacetylation, ultrahigh-viscosity chitosan raw material homogenization , Rapid dissolution, the design of the vacuum scraping film deaerator, the development of composite rapid degassing technology, preparation of spinnable good homogeneous high viscosity chitosan spinning solution. 2.2.1 Sheep chitosan direct reaction of high shear, dissolution integration: the conventional process more use of ground into powder chitosan raw materials for stirring to dissolve. Compared with the conventional process, we use the chip chitosan plus solvent to directly dissolve the multi-layer high-shear adjustable stirred tank, reducing the process and energy consumption, avoiding the destruction of the chitosan macromolecule structure and achieving high viscosity , Rapid preparation of high deacetylated spinning solution. The dissolution time is reduced by half and the fiber strength is increased by 30%. 2.2.2 Composite rapid defoaming technology: filtered pure chitosan spinning solution, using high-pressure compressed air delivery to the vacuum reactor filled with small holes in the pipe separation, separation of a good spinning solution through the umbrella flow plate Wipe the membrane, stirring, the solution position changes, the bubble quickly exit the interface layer, than conventional static degassing, reducing the time 10-34 hours, the spinning solution to maintain the original viscosity of 90%. 2.3 high-flow high-pressure high-density extrusion, uniform fiber forming technology based on chitosan spinning rheological characteristics and spinning mechanism, developed a high-flow metering pump high pressure thixotropic fluid extrusion technology, partition high-density large diameter spinneret , High-temperature flow-through solidification technology, to achieve efficient extrusion, uniform forming, all spinning process control fiber structure and strength; greatly enhance the chitosan fiber strength and uniformity. 2.3.1 High-flow metering pump High-pressure low-temperature thixotropic fluid extrusion technology: Hayes molar spinning, the viscosity of the spinning liquid up to 500000mpa • s, the use of traditional metering pump, the spinning solution viscosity is too high, causing gear idle , The amount of instability, and the formation of high-shear, resulting in temperature thixotropic fluid spinning liquid structure damage occurs, a substantial reduction in viscosity. According to the characteristics of high-viscosity chitosan spinning solution, we use double feed chamber feed to improve the feed efficiency, increase the single delivery capacity, and adopt high-pressure extrusion gear clearance, specially designed and manufactured for high viscosity , High flow spinning liquid metering pump, the viscosity can be up to 500000mpa • s spinning solution per revolution for 300ml, 15 kg per minute for high viscosity chitosan spinning solution to achieve a stable flow of large output, breaking the pure Chitosan fiber industrialization in the metering pump part of the bottleneck. 2.3.2 Partition High-density large-diameter spinneret: Self-designed high-density spinneret, spinneret was three layers of hexagonal distribution, high pressure, uniform extrusion, the molding position of small, less broken. 1000 / cm2 spinneret evenly distributed throughout the area of ​​the spinneret, a total of 150,000 holes, the use of horizontal double spinneret spinning position, making the number of fibers reached 300,000 production, the formation of an annual output of 1,000 tons capacity . 2.3.3 Push-flow high-temperature solidification technology: Metering pump 15 ㎠high pressure spinning liquid from the 150,000-hole spinneret in the spray into the high temperature coagulation bath, the coagulation bath is greater than the speed of tow discharge in the same direction Flow, play a role in promoting the dispersion of the tow, making the coagulant and spinning solution double diffusion is full, diffusion rate increased, solidification smooth, the fiber prepared by high strength, low uniformity. 2.4 kt pure chitosan fiber spinning process and the whole process of energy saving, green cleaner production. 2.4.1 Preparation of raw liquid and compact design, pneumatic conveying technology: Innovative use of compressed air as conveying fluid transmission, compared with the traditional gear pump delivery, reducing the time of nearly double the spinning solution delivery, saving 16KWh , And the spinning solution viscosity stability. 2.4.2 2,000-ton water reuse system: The workshop floor, built 2,000 tons of underground tanks, the potential of water, the production process of water collection, after the use of reverse osmosis filtration and concentrated water reuse two of the most Advanced two-stage combined water treatment system. So that the water recycling rate as high as 90%, to achieve the effect of energy saving. At the same time, with the temperature control system in the workshop, the water temperature fluctuation does not exceed 5 ℃, the overall energy saving in more than 40%. 2.4.3 Reciprocating countercurrent washing device: Washing process washing device uses three sections of three compact design, reducing plant land 60%. At the same time, compact design to achieve a multi-stage washing parameters adjustable, according to the process needs to change the washing conditions flexible to ensure the quality of fiber washing. 2.5 fiber processing and product development of key technologies. 2.5.1 Uncurled Haym's Molding Technology The flexible combing technology and softener are used to adjust the process parameters to achieve a high rate of up to 99% with no need to add low curl strips under high curl. 2.5.2 multi-component multi-form chitosan materials, all-color staining technology Too fast coloring, easy to dissolve in acidic conditions, combined with other fiber dye technology, specifically designed from one-component chitosan up to the group Points, multi-morphological chitosan materials, all-color staining. By adjusting various types of dyes, dyeing pH, time and soaping process conditions, the formation of panchromatic dyeing technology, to achieve pure chitosan fiber panchromatic staining. 2.5.3 Hyster products developed and developed spunlace, acupuncture, hot air non-woven fabrics, knitted fabrics, woven fabrics and other products, men and women underwear, medical supplies and other multi-domain products. Especially with the development and design of the space system in Sichuan Hysterom aerospace multi-functional cloth, won the national defense invention patent, patent No..4; cooperation with the Central Hospital of chitosan surgical implant membrane products, has been included in the National 863 Program . 3, industrial application practice 3.1, in the medical and health industry practice Hysterom broad-spectrum antibacterial, anti-mildew, excellent biocompatibility and non-immunogenicity, but also has the adsorption chelation, hemostasis, Reduce the role of scars. These various biological activities based on Hystrnom are currently used in a wide range of medical and health applications for applications such as wound dressings and disinfecting treatments, especially for scaffolds or carrier materials in the fields of tissue engineering and regenerative medicine, as well as in vivo Preparation of degradable surgical sutures. Hayesmore company has put into operation "1000 tons of pure chitosan fiber production line", in the pure chitosan fiber industry in the world, the Chinese People's Liberation Army Military Equipment Institute selected Hayes Moore as materials, the production of medical bandage bandage Hundreds of thousands of square meters, has been applied to the medical; well-known companies in Taiwan selected Hayes Moore as the material, has developed a variety of high-end competitive advantages of hemostasis products, has been successfully applied to foreign military and mainland China and Taiwan Hospital, the market feedback is good; British companies choose fast-absorbing Hysterom, is trying to stop bleeding cotton. Currently, Hayes Moore company is working with the Central Hospital, Chinese Academy of Sciences, Wenzhou Medical University joint Hysterolar hernia patch surgical implant products such as the development of research. 3.2. Application Practice in Textile Industry: Hayes Moore develops and produces series blended yarns and textiles with Hayes' mole content of 10% -30% based on Hayes Moore. The main products include Modal, Tencel, Seoul, cashmere, combed cotton and other blended, mixed yarn of all types of series, underwear fabrics. And the Shanghai, Hangzhou, Guangzhou, Nantong, Zhangjiagang, Beijing, Yiwu and other domestic enterprises to establish more than 100 outstanding cooperation in industrial development, including Hong Kong Embry Fang, Beijing New Era, Beijing Tongniu, Hangzhou Tianqi, Shanghai Jialin Jie , Guangdong Kang Niya, etc., covering spinning, Printing and dyeing, weaving, knitting, underwear, non-woven fabrics and other areas of high-end business organizations to jointly overcome all the technical problems of dyeing, weaving, finishing, Maintained the high content of fiber and functionality, forming a synergistic development of the linkage mechanism. 3.3 Practice in the Field of Aerospace In 2010, Mr. Zhou Jiacun, Chief Engineer of Hyster Bio-Technology Co., Ltd., accepted the R & D mission of the State on the research and development of the special function cloth of the spacecraft "Tiangong-1". After scientific research and technological innovation, successfully developed in 2011 Hysterom as the core raw materials, "aerospace special features cloth" it has antibacterial, flame retardant, anti-static, anti-mildew, 240 ℃ high temperature degassing non-toxic and other excellent features, the current Belongs to the international leader. June 2011 Hayes Moore biotechnology company became the "China Aerospace Business Partner"; its "Huaxing brand cotton yarn, cotton yarn," "Hayes brand Moore chitosan fiber material" "The three major categories of products have become" China Aerospace-Specific Products, "and Hayes Moore has become the only" China Aerospace Business Partner "for cotton yarn, hemp cotton yarn, chitosan fiber material and underwear products. 3.4, in the field of military applications Practical development and design of the armed police training, combat underwear, first aid gauze, boots, lining material and other non-sensitive munitions. Chitosan products have the effect of relieving pain, stopping bleeding and reducing scar in wounds. It has been verified by foreign countries that the demand for chitosan is a direction for the development of military textiles. The military development of the project has played a good role in guiding and demonstrating. 3.5. Practice in tobacco industry Hysterom contains functional groups such as active hydroxyl group, free amino group and electron-rich pyran ring, which can chelate harmful substances such as heavy metals, formaldehyde, benzene and carbon monoxide, Human injury, and retains the taste of people when smoking. Therefore, it is widely used in the tobacco industry as a tobacco filter material or a filter medium additive thereof. At present, the company around chitosan as a tobacco filter or its application of additive research has carried out a large number of work, and made good progress, laid the foundation for its practical application and research results. 4 Summary Pure chitosan fibers have excellent performance has been recognized by academia and industry, but the industrialization has become the bottleneck restricting the application of large-scale chitosan fiber industry. After more than 5 years of public relations, Hypertherm Biotechnology Co., Ltd. succeeded in solving the industrialization problem of pure chitosan fiber and established a demonstration line with an annual output of 2,000 tons. The Hysmol produced was not only excellent in performance but also medical Health, textiles, aerospace, military and tobacco industries have been applied, customers at home and abroad. Its industrialization achievements have been highly recognized by the China Textile Industry Federation, won the 2013 China Textile Industry Federation first prize for scientific and technological progress, and recommended by China Textile Industry Federation to participate in the national scientific and technological progress award. Next, Hayes Moore Biotechnology Co., Ltd. need to further strengthen the cooperation with China Food and Drug Administration, Institute of Physics and Chemistry Chinese Academy of Sciences and other cooperation units to speed up the Hayes Moore in the medical, tobacco and other industries research and industrial applications In order to better play Hyster's role in promoting human health and improving the quality of life. On the other hand, Hayes Moore Biotechnology Co., Ltd. should also shoulder the responsibility of guiding the development of the industry and take the lead of its own industry to guide the continuous, healthy and rapid development of the chitosan fiber industry.
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