Silicon Nitride Flame Retardant Viscose Fiber Has Broad Prospects.

< p > viscose fiber has many advantages such as good hygroscopicity, comfortable wearing, raw material regeneration and good dyeing property. It has been widely applied in the textile industry.

But viscose fiber is a flammable fiber, its melting temperature is higher than the pyrolysis temperature (280 ~380 C) and the combustion temperature (420 C), the polar oxygen index is 19.7, the combustion heat is 16.3KJ/g.

Due to the unqualified flame-retardant index, the export of viscose fabric exports in China is not unusual.

In order to prevent exports of textile fabrics and accessories from falling due to the failure of flame retardancy, more and more textile exporting enterprises focus on producing flame retardant fiber fabrics.

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< p > by the Zhongyuan University of Technology, Xinxiang mayor Hong Chemical Co., Ltd., Xinxiang chemical fiber Limited by Share Ltd, Shandong Silver Eagle Chemical Fiber Co., Ltd., the "environmentally friendly flame retardant regenerated cellulose fiber key technology research" project, will undoubtedly viscose fiber environmental protection and flame retardancy to a new level.

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< p > < strong > adding silicon phosphorus flame retardant < /strong > < /p >

< p > it is understood that at present, the main production methods of flame retardant viscose fiber are: adding flame retardant modification, joint polymerization modification and flame retardant finishing three kinds.

Adding the flame retardant into the spinning solution before spinning, and then spinning and solidifying the flame retardant into the fiber, the production of the flame retardant viscose fiber can be carried out on the ordinary viscose fiber production equipment. The effective elements of the general viscose raw liquor are phosphorus, phosphorus nitrogen, phosphorus halogen, halogen and so on.

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< p > when the viscose and flame retardants are mixed before spinning, the uniformity is poor, and a large number of bubbles are generated. Therefore, it takes several hours to defoaming before spinning.

Flame retardant is easy to produce cohesion in viscose.

Therefore, the pre spinning injection method can overcome these shortcomings and obtain excellent flame retardant viscose fibers.

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< p > according to the project leader Zhang Ruiwen, Professor of materials and chemical engineering, Zhongyuan University of Technology, viscose fiber is widely used, and fiber and its products are highly combustible. Its flammability hinders its high added value utilization and expansion of application fields.

Zhang Ruiwen said: "aiming at the problem of flammability of viscose fibers, our project team has overcome the key problems of functional modification of cellulosic regenerated fiber durable flame retardant, solved the problem of stability of silicon nitride flame retardant in the environment of viscose production, developed environment-friendly flame retardant viscose fiber and products, and achieved the industrialization application of fruit technology.

Meanwhile, through improving and breaking through the technical difficulties of flame-retardant viscose fiber, the research group has enriched the functional viscose fiber varieties, improved the competitiveness of viscose fiber, and promoted the technological progress of viscose fiber industry.

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< p > < strong > carry out < a href= "//www.sjfzxm.com/news/index_c.asp > > industry college research < /a > cooperation < /strong > /p >

< p > according to Song Deshun, engineer of Shandong Silver Eagle Chemical Fiber Co., Ltd., Shandong Silver Eagle Chemical Fiber Co., Ltd., as early as 2009, decided the implementation plan of flame retardant fiber product positioning and production, and successfully carried out trial production in the same year.

Shandong Silver Eagle Chemical Fiber Co., Ltd. has determined the development and development plan of the silicon nitride flame retardant fiber between the silicon and phosphorus flame retardants, and successfully found the suitable type and preparation method of the new type of silicon nitride flame retardant. In July 2010, the first pilot production of the flame retardant fiber was completed.

After that, Shandong Silver Eagle Chemical Fiber Co., Ltd. and Zhongyuan University of Technology, Xinxiang Changhong chemical industry and other units to carry out close cooperation in industry, University and research, and constantly explore, optimize the process, many pilot production.

In order to improve the stability and spinnability of flame retardant fibers, the company has built a perfect pre spinning injection system and successfully completed the stable production of silicon nitride new flame retardant viscose fiber production line.

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< p > Song Deshun said that most of the flame retardants used for cellulose regenerated fibers are phosphorus derivatives, organic silicides and amino compounds. Recently, nano inorganic salt microcapsules have been reported for the modification of viscose fibers.

The method of flame retardant treatment is focused on pre spinning blending, that is, before the spinning process, the flame retardant is added to the spinning solution, so that the flame-retardant function of the flame retardant fiber is permanent.

The key technologies of durable flame retardant functional modification of cellulose regenerated fiber are: first, the synthesis of environment-friendly flame retardants; two, the durability technology of flame retardants in cellulose; three, the wet spinning technology of flame retardant / cellulose blend solution.

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< p > according to Zhang Ruiwen, this project is aimed at the key problems of functional modification of cellulosic regenerated fiber durable flame retardant. First, the idea and theory of combining silicon nitride with flame retardancy are put forward, and the method and technology of silicon nitride synthesis are established. Secondly, a new type of silicon nitride series flame retardant suitable for viscose production is developed.

The new technology of durable flame retardant functionalization of cellulose regenerated fiber has been innovated again, and the new spinning process of durable flame retardant cellulose regenerated fiber has been explored. It solves the problems of non environment-friendly flame retardant, complex modification process, high cost and difficult quality control of the traditional flame retardant viscose fiber. It solves the problem of stability of silicon nitride flame retardant in the complex environment of viscose production, and develops environment-friendly flame retardant viscose fiber and products to achieve the industrialization application of the achievement technology.

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< p > finally, a set of flame-retardant functionalization theory and synthesis of silicon nitride flame retardant were established.

The optimized production line of flame retardant modification method and process, spinning process of environment-friendly flame retardant viscose fiber and related terminal product properties.

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< p > < strong > opening up the market with advantages: < /strong > /p >

< p > > a href= "//www.sjfzxm.com/news/index_c.asp" > Song Deshun < /a > indicates that the project has perfected and broken the technical difficulties of flame retardant viscose fiber. The preparation technology of flame retardant viscose fiber will be pformed into blending production in the future, and the silicon nitride flame retardant viscose fiber with high price and middle price will be more and more favored by the market.

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It provides all directional thermal protection. Its excellent heat insulation performance can effectively prevent high temperature heat radiation pmission, and the fibers do not shrink or not deform at high temperature. The arc resistance and antistatic properties can maintain the original natural antistatic property of viscose fiber, effectively reduce the arc burn and prevent static electricity generation, suitable for use in arc or explosion proof places, excellent moisture absorption, comfortable and breathable clothing, high temperature environment conducive to sweat discharge, reducing muscle twitching, and other adverse reactions; excellent dyeing properties, natural fibers are easy to dye, bright coloring, and good color fastness; green environmental protection, with recycled natural plants as raw materials, waste can be degraded naturally, and meet the requirements of environmental protection and other 6 advantages. < p > silicon nitride flame retardant < a href= "//www.sjfzxm.com/news/index_c.asp" > viscose fiber > /a > has good permanent flame retardancy, which can maximize the safety of users.

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< p > "silicon nitrogen flame retardant viscose fiber will shine brilliantly in the fields of mid end textile flame retardant fiber, high end nonwovens and flame retardant filling materials, so as to fill the market gap caused by the defects of the current phosphorus flame retardant viscose fiber and silicone flame retardant viscose fiber."

Song Deshun said.

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< p > it is understood that phosphorus flame retardant also meets the requirements of the European Union flame retardant halogen free, which can be mainly applied to fire equipment and clothing, military police equipment and clothing, industrial thermal protective clothing, splash protective clothing, flame retardant decoration products, flame retardant filling materials, etc.

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