Tianjin Petrochemical Fiber Characteristics Vary Greatly In Research And Development Process.

Recently, the headquarters scientific research project jointly undertaken by Tianjin petrochemical and chemical department and Beijing < a target= "_blank" href= "http://www.91se91.com/" > clothing /a school was concluded and appraise.

The project has successfully developed two kinds of multi-functional imitation wool and compound functional polyester staple fiber.

After identification, the comprehensive performance of the product has reached the international advanced level.

To understand the characteristics of these fibers, the reporter interviewed Liu Xiuqing, technical director of the Chemical Department of Sinopec Tianjin branch.

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< p > fiber characteristics are different < /p >

< p > Liu Xiuqing told reporters that the comprehensive performance of the multifunctional imitation wool is comparable to that of wool, and is excellent in strength, elongation, elasticity and three-dimensional crimp.

It achieves the normal dyeing with wool. It has good gloss, touch and elasticity, and improves the wrinkle resistance and chemical stability of wool fabrics, thus improving the comfort and beauty of the fabric and reducing the cost of wool fabrics.

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< p > compound function polyester staple is a kind of multifunctional polyester fiber with a target= "_blank" href= "http://www.91se91.com/" > textile > /a > material with different combinations such as moisture absorption, moisture permeability, quick drying, antistatic, anti ultraviolet and anti pilling.

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< p > at present, the common feature of the comfortable and functional polyester fiber, which has been developed at home and abroad, is the profiled design of the fiber section, which makes the fiber surface with fine grooves. It can absorb and spread the moisture and sweat from the surface of the skin, instantly excrete the body, and keep the skin dry and cool.

It can embody the advantages of high hygroscopicity similar to cotton fiber, and overcome the disadvantage of poor evaporation and dehumidification property of cotton fiber, and endow the synthetic polyester fabric with comfort.

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< p > based on the need of physical health protection, people's demand for anti ultraviolet clothing products has been increasing. Because polyester fibers absorb more ultraviolet radiation than other fibers and cotton, so this fiber is dedicated to anti ultraviolet function, that is, the average shielding rate of ultraviolet spectrum 200nm to 380nm is 94% to 96.7%. These fabrics have a certain reflection effect on visible and infrared light, and are cool and comfortable to wear.

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< p > compound function polyester staple fiber modified common antistatic modification method brings the disadvantages of poor material washability, strong sensitivity to environmental humidity, poor comfort or black fiber.

At the same time, the fabric overcame the surface of the fabric often worn away from the surface of the fabric and formed Mao Yu. Mao Yu twisted each other to form a small ball. It adheres firmly to the surface of the fabric and is not easy to fall off, which seriously affects the beauty and feel of the fabric.

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< p > the development process is very difficult. < /p >

< p > according to the introduction, the research and industrialization of "composite functional polyester staple fiber" started in January 2010 and completed the appraisal in early 2013.

The objectives of the project are: to prepare multifunctional copolyester chips containing copolymers and in-situ composite powders by copolymerization and in-situ compounding technology, and to mix the chips with conventional polyester to make special shaped fibers, and to carry out fabric design and weaving, that is, by combining physical and chemical modification, we can produce comprehensive properties comparable to natural fiber fabrics, and overcome the inherent disadvantages of natural fiber fabrics, and have many functions such as hygroscopic, quick drying, antistatic and anti pilling.

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< p > the project team first established 4 research plans to be developed on the basis of literature and market research and advanced laboratory research and development. In the past two years, it carried out performance research and test for the contents of the test scheme, and carried out 18 tons of copolyester masterbatch with different functions. Three leaf and cross shaped fibers were spun on the new product development device of the Tianjin Corporation according to the +80% semi extinction routine section of the 20% master batch, and the specifications of the short fiber finished products were 1.56dtex * 38mm, 1.33dtex x 38mm and 1.22dtex * 38mm.

After that, the staple fibers and ordinary cotton fibers were spun into yarn and knitted and dyed.

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The main technical difficulties of < p > project include: (1) surface multiple modification technology of functional inorganic powder and its dispersing technology in ethylene glycol; (2) the key technologies of multifunctional copolyester chips, such as hygroscopic, antistatic, anti ultraviolet and anti pilling, in situ condensation polymerization; (3) high speed spinning and post-processing technology of multi-functional copolyester chips and conventional polyester, and control technology of morphological structure of special-shaped fibers; (4) integration technology and functional evaluation of different combinations of multi-functional polyester fabric.

The project is invested by Sinopec company. Both sides enjoy the patent of technical cooperation and organize the industrial production according to the demand of the market to create benefits for enterprises.

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< p > "multi-functional polyester worsted wool like fabric and its fabric development" was established in 2008 as early as 2008. The study proposed the blending of PTT and modified polyblend fibers, and then blended wool and wool into wool fabrics.

The fabric has: (1) it can be dyed with wool at atmospheric pressure; (2) it has good gloss, handle and elasticity, which can improve the wrinkle resistance and chemical stability of wool fabric, thereby improving the comfort and beauty of the fabric. (3) at the same time, it can also achieve the advantages of reducing the cost of wool fabrics.

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< p > June 2008 to June 2009, based on the literature review and domestic and foreign production investigation, the researchers determined the test scheme, purchased experimental materials and related experimental devices, and carried out laboratory research work.

The polymerization reaction was carried out according to the experimental plan, and dozens of batches of copolyesters were synthesized in the pilot test. The structure and properties of the synthesized polyester chips were tested and analyzed. The structure and properties of the co polyester and PTT and their blends were tested and analyzed. After that, two kinds of raw materials of MCPET and PTT were blended for dozens of times to determine the best spinning and post-processing conditions, and the structure and properties of the fibers were characterized and analyzed, thus laying the foundation for the industrialization experiment.

From July 2009 to June 2011, on the basis of laboratory research, it was determined that 20 tons of modified polyester were produced. In February 2010 and April 2011, the modified polyester chips and PTT were blended in a certain proportion on the new development device of Tianjin Corporation respectively, and the blended products were blended in a certain proportion. The specifications of the finished products were 3.33dtex * 64mm and 3.33dtex tow, and then the spinning fibers and tow were supplied to the textile mill for weaving.

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< p > the application prospect is broad. < /p >

< p > Liu Xiuqing told reporters that for the time being, the two new polyester staple fibers are more complex because of their polymerization and spinning process, and the production cost is much higher than that of the traditional conventional staple fiber. Although it has the advantage of multi-function and belongs to the higher grade chemical fiber products, but because of the newly developed work, the price of these two fibers is too high, and the demand of the downstream market has been limited.

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< p > however, the excellent performance of these products can be widely applied in all aspects of life, such as the application of multifunctional polyester staple in functional clothing, so that clothes can also have the characteristics of UV protection and fast drying.

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< p > it is understood that before functional clothing such as sunscreen clothing to achieve sunscreen function, often need to add paint on the fabric, there is a certain health risk, and paint in the process of washing is easy to fall off, function failure, multi-functional polyester short fiber in the fabric source to solve the problem of sun protection.

At the same time, the anti-static function caters to the dry and static weather in northern China.

With high moisture absorption properties, the fiber can be used as a fabric for personal clothing.

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< p > multi-functional imitation wool can be mixed with wool at atmospheric pressure for boiling dyeing. All the indexes are similar to wool and can be blended with wool. After the gross wool content is released, the low cost advantage will significantly reduce the price of wool products.

In recent years, the cashmere market has been booming. In particular, several famous cashmere markets in China have gradually shown the advantages of industrial clusters. I believe that the success of this fiber will help promote the development of cashmere enterprises.

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< p > therefore, although the price of these two fibers is too high at present, if it comes from raw material source to finished fabric, it can form a chain of interlocking in series.

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Under the premise of maintaining the characteristics, we should further reduce the cost to meet the domestic consumption level. At the same time, production, research and marketing actively cooperate to jointly develop the foreign market, and believe that these two varieties can become the main products of the future market. "P"

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< p > it is reported that the two fibers have gained favorable comments from customers.

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