"Super imitation cotton" review "Yi Mian": imitation cotton is more super cotton China's textile chemical fiber industry is in the new stage of transformation, upgrading and innovation development, and the cotton gap has become a problem that restricts the development of the industry. In order to alleviate the shortage of natural fibers such as cotton, we will further develop a new generation of high-simulation differential functionalized fibers, and promote the innovative development of new high-value-added and super-simulated fabric fabrics of textiles, which is a joint promotion of textile and chemical fiber during the “Twelfth Five-Year Plan†period. Important strategic tasks.
In 2012, China's chemical fiber output was 37.92 million tons, of which polyester production was 30.57 million tons, accounting for 80% of the total chemical fiber, accounting for more than 70% of the world's total polyester. Its development speed is far greater than the technical level or production variety. Other synthetic materials and synthetic fibers, China has become the world's most dynamic chemical fiber polyester production country, polyester has also become the main species to alleviate the shortage of natural fibers such as cotton wool and linen.
In 2011, the Chemical Fiber Industry Technology Innovation Strategic Alliance undertook the national “Twelfth Five-Year†Science and Technology Support Program “Technology Development of Ultra-Imitated Cotton Synthetic Fiber and Its Textile Industryâ€, aiming to improve the technical water products of China's polyester industry, achieving versatility and high A new generation of polyester (imitation cotton) fiber with high quality, low energy consumption and low emission is used in large-scale market. The project covers 27 joint research and development of upstream and downstream enterprises in the polyester industry chain. After more than two years of joint efforts, the project has progressed smoothly. A new generation of polyester (imitation cotton) product system map has been completed, and an evaluation system has been initially established. Standard work is underway, and various project undertakers have also launched to the market. Super imitation cotton synthetic fiber, such as high hydrophilic polyester filament developed by Donghua University and Suzhou Jinhui Fiber New Material Co., Ltd., hydrophilic dyeable staple fiber jointly developed by China Textile Science Research Institute and Yizheng Chemical Fiber Co., Ltd. The hydrophilic anti-UV staple fiber jointly developed by China Textile Research Institute and Jiangyin Huahong Chemical Fiber Co., Ltd. and the micro-denier hydrophilic polyester filament developed by Tongkun Group have formed the core of the “Yi Mian†brand. Commodity sub-brands such as cotton, "Hundred Cotton" and "Ice Rainbow". The modification effect of the new generation of polyester fiber is mainly reflected in the fabric products, not the ecological imitation, but the functional imitation. The fiber products have the excellent characteristics of cotton and polyester, and improve their respective shortcomings, including cotton moisture absorption, softness and warmth, etc. The performance also has the good mechanical properties, heat resistance and color fastness of polyester. It can also achieve the functions of perspiration, quick-drying, antistatic, anti-pilling, etc. or flame retardant, antibacterial and anti-ultraviolet.
Yimian is a high-quality, high-performance, low-energy and low-emission feature developed by the use of structurally controlled copolyester continuous polymerization, controlled morphological properties, and key technologies such as new fiber spinning, weaving, printing and dyeing. A new generation of polyester fiber series products can be used in home underwear, sports and leisure, professional tooling and denim. These high-tech fibers will enable people to witness the miracle in the future: imitation cotton enters the era of innovation and creates a better life in the post-era era. In the future, the alliance will promote the “Yi Mian†fiber products, promote the market scale application of “Yi Mian†fiber and its textiles, create a reliable market brand, and enhance the added value of products. On the one hand, strengthen the new generation of imitation cotton. The direction of fiber technology innovation and product development, enhance the comfort, safety and appearance of textiles, meet the new expectations of people of all nationalities to live a better life; on the other hand, strengthen standards development, quality supervision and certification, comfort evaluation, etc. Work to ensure the scientific standardization and branding of new product marketing, eliminate the psychological barriers of consumers, and guide the transformation of consumer concepts.
"Super-imitation cotton" interview "super-imitation cotton" to help the added value of products increase exponentially Reporter: In August 2011, the national science and technology support technology project organized by the chemical fiber industry technology innovation strategic alliance - "super imitation cotton synthetic fiber and its textiles The start of industrialization technology development, Donghua University is also one of the project undertakers, please tell us about the latest development of the project.
Wang Huaping: After the official launch of the project, Donghua University promoted the development of “super-imitation cotton†polyester fiber by taking advantage of the advantages of the State Key Laboratory of Fiber Materials Modification and combining the research results and experience of functionally differentiated fibers over the years. The gloss, feel, and thermal comfort of the fiber were studied from four aspects of copolymerization, blending, blending and surface treatment. The principles and factors that affect fiber gloss, hand feel, and thermal comfort are studied. The addition amount and addition process of three single, four single, five single and inorganic particles were optimized by polymerization experiments, and three groups of hydrophilic polyester fiber modified formulations were finally determined. In Tianjin Petrochemical and Jinhui Fiber New Material Co., Ltd., the industrialization experiment of short fiber and filament was carried out, and polyester staple fiber and filament were successfully developed. The moisture regain rate reached 1.2%, and all performance indexes were satisfied. Application requirements. At the same time, it has also established a cooperation platform with companies such as masterbatch preparation, and developed high hydrophilic masterbatch and fiber hydrophilic surface finishing agent.
Secondly, Donghua University also adopted the relationship between the hydrophilic functional group and the hydrophilic property and surface contact angle of the polyester, the relationship between the contact angle of the polyester surface and the moisture regain of the fiber, and the hydrophilicity of the cotton fiber and the imitation cotton fiber and the product. The research on the mechanism of warmth, the mechanism of dynamic heat and humidity comfort, and the like, proposed the standard of hydrophilic polyester chips and hydrophilic polyester fibers. The surface contact angle of ordinary polyester chips ranges from 75° to 90°, and the moisture regain of fiber is 0.4%~0.8%. The surface contact angle of hydrophilic polyester chips ranges from 60° to 75°, and the fiber regain rate is 0.8%~ 1.2%; high hydrophilic polyester chips have a surface contact angle ranging from 45° to 60° and a fiber moisture regain ratio of 1.2% to 1.6%.
Reporter: What are the difficulties in the “super-imitation cotton†project that need to be overcome in terms of technology? What achievements have been made so far?
Wang Huaping: “Super imitation cotton†not only pursues cotton fabrics in terms of fiber surface morphology and fabric style, but also focuses on the performance of fabric products, such as ultra-cotton imitation cotton, especially the dynamic thermal comfort performance closely related to underwear and casual sportswear. The ultra-imitation cotton project is designed and controlled from chemical structure, fiber structure and fabric structure, and includes multiple technical means such as copolymerization, blending, profiled, mixed fiber and surface treatment. It is important to overcome the uniformity of the distribution of modified groups in the copolymerization process, to control the structure of macromolecular sequences and the structure of amorphous regions, to achieve controllable polymerization process; to design new fiber cross-section shapes such as flat, cross and hollow, to control the wicking of fiber products. Effect, improve the ability of gas permeability and moisture permeability; design organic and inorganic hydrophilic agent compounding, combined with alkali reduction treatment, regulate the groove structure and hydrophilic property of fiber surface, improve moisture absorption capacity and wetting speed. Donghua University is working on the basic research of hydrophilic mechanism, thermal insulation mechanism and dynamic heat and humidity comfort performance mechanism, in order to establish a database of structure and effect relationship between fiber multiple structure and product performance.
Reporter: It is understood that compared with the previous development of single differential technology or single functional product, the research and development of “super-imitation cotton†products pay more attention to the integration of various differential and functional technologies, emphasizing polymerization, spinning and weaving. And the integration of dyeing and finishing technology, please analyze the difference.
Wang Huaping: The current “super-imitation cotton†is obviously different from the previous development of single differentiation technology or single-function product. The research and development of “ultra-imitation cotton†technology and products combines polymerization, blending, spinning and surface treatment. Integration of multiple differential functional technologies such as spinning/weaving, dyeing and finishing. For example, the super-imitation cotton product “Rui Mian†jointly developed by Donghua University and Jinhui New Materials Co., Ltd. first uses the copolymerization modification technology to add three single, four single, five single and inorganic particles to dye the fiber and soften. The regulation of hydrophilicity and hydrophilicity is followed by spinning with a special-shaped spinneret and mixing and using the different shrinkage characteristics of FDY and POY to control the fluffiness of the fiber, so that the style of the fabric is closer to that of cotton fiber. In the post-processing process, warp sizing, structure design and weaving process should be designed according to the performance characteristics of “Rui Mianâ€. Through different weaving processes and dyeing and finishing conditions on different textile models, the finished fabrics will appear stunned. Different styles and feels.
In 2012, China's chemical fiber output was 37.92 million tons, of which polyester production was 30.57 million tons, accounting for 80% of the total chemical fiber, accounting for more than 70% of the world's total polyester. Its development speed is far greater than the technical level or production variety. Other synthetic materials and synthetic fibers, China has become the world's most dynamic chemical fiber polyester production country, polyester has also become the main species to alleviate the shortage of natural fibers such as cotton wool and linen.
In 2011, the Chemical Fiber Industry Technology Innovation Strategic Alliance undertook the national “Twelfth Five-Year†Science and Technology Support Program “Technology Development of Ultra-Imitated Cotton Synthetic Fiber and Its Textile Industryâ€, aiming to improve the technical water products of China's polyester industry, achieving versatility and high A new generation of polyester (imitation cotton) fiber with high quality, low energy consumption and low emission is used in large-scale market. The project covers 27 joint research and development of upstream and downstream enterprises in the polyester industry chain. After more than two years of joint efforts, the project has progressed smoothly. A new generation of polyester (imitation cotton) product system map has been completed, and an evaluation system has been initially established. Standard work is underway, and various project undertakers have also launched to the market. Super imitation cotton synthetic fiber, such as high hydrophilic polyester filament developed by Donghua University and Suzhou Jinhui Fiber New Material Co., Ltd., hydrophilic dyeable staple fiber jointly developed by China Textile Science Research Institute and Yizheng Chemical Fiber Co., Ltd. The hydrophilic anti-UV staple fiber jointly developed by China Textile Research Institute and Jiangyin Huahong Chemical Fiber Co., Ltd. and the micro-denier hydrophilic polyester filament developed by Tongkun Group have formed the core of the “Yi Mian†brand. Commodity sub-brands such as cotton, "Hundred Cotton" and "Ice Rainbow". The modification effect of the new generation of polyester fiber is mainly reflected in the fabric products, not the ecological imitation, but the functional imitation. The fiber products have the excellent characteristics of cotton and polyester, and improve their respective shortcomings, including cotton moisture absorption, softness and warmth, etc. The performance also has the good mechanical properties, heat resistance and color fastness of polyester. It can also achieve the functions of perspiration, quick-drying, antistatic, anti-pilling, etc. or flame retardant, antibacterial and anti-ultraviolet.
Yimian is a high-quality, high-performance, low-energy and low-emission feature developed by the use of structurally controlled copolyester continuous polymerization, controlled morphological properties, and key technologies such as new fiber spinning, weaving, printing and dyeing. A new generation of polyester fiber series products can be used in home underwear, sports and leisure, professional tooling and denim. These high-tech fibers will enable people to witness the miracle in the future: imitation cotton enters the era of innovation and creates a better life in the post-era era. In the future, the alliance will promote the “Yi Mian†fiber products, promote the market scale application of “Yi Mian†fiber and its textiles, create a reliable market brand, and enhance the added value of products. On the one hand, strengthen the new generation of imitation cotton. The direction of fiber technology innovation and product development, enhance the comfort, safety and appearance of textiles, meet the new expectations of people of all nationalities to live a better life; on the other hand, strengthen standards development, quality supervision and certification, comfort evaluation, etc. Work to ensure the scientific standardization and branding of new product marketing, eliminate the psychological barriers of consumers, and guide the transformation of consumer concepts.
"Super-imitation cotton" interview "super-imitation cotton" to help the added value of products increase exponentially Reporter: In August 2011, the national science and technology support technology project organized by the chemical fiber industry technology innovation strategic alliance - "super imitation cotton synthetic fiber and its textiles The start of industrialization technology development, Donghua University is also one of the project undertakers, please tell us about the latest development of the project.
Wang Huaping: After the official launch of the project, Donghua University promoted the development of “super-imitation cotton†polyester fiber by taking advantage of the advantages of the State Key Laboratory of Fiber Materials Modification and combining the research results and experience of functionally differentiated fibers over the years. The gloss, feel, and thermal comfort of the fiber were studied from four aspects of copolymerization, blending, blending and surface treatment. The principles and factors that affect fiber gloss, hand feel, and thermal comfort are studied. The addition amount and addition process of three single, four single, five single and inorganic particles were optimized by polymerization experiments, and three groups of hydrophilic polyester fiber modified formulations were finally determined. In Tianjin Petrochemical and Jinhui Fiber New Material Co., Ltd., the industrialization experiment of short fiber and filament was carried out, and polyester staple fiber and filament were successfully developed. The moisture regain rate reached 1.2%, and all performance indexes were satisfied. Application requirements. At the same time, it has also established a cooperation platform with companies such as masterbatch preparation, and developed high hydrophilic masterbatch and fiber hydrophilic surface finishing agent.
Secondly, Donghua University also adopted the relationship between the hydrophilic functional group and the hydrophilic property and surface contact angle of the polyester, the relationship between the contact angle of the polyester surface and the moisture regain of the fiber, and the hydrophilicity of the cotton fiber and the imitation cotton fiber and the product. The research on the mechanism of warmth, the mechanism of dynamic heat and humidity comfort, and the like, proposed the standard of hydrophilic polyester chips and hydrophilic polyester fibers. The surface contact angle of ordinary polyester chips ranges from 75° to 90°, and the moisture regain of fiber is 0.4%~0.8%. The surface contact angle of hydrophilic polyester chips ranges from 60° to 75°, and the fiber regain rate is 0.8%~ 1.2%; high hydrophilic polyester chips have a surface contact angle ranging from 45° to 60° and a fiber moisture regain ratio of 1.2% to 1.6%.
Reporter: What are the difficulties in the “super-imitation cotton†project that need to be overcome in terms of technology? What achievements have been made so far?
Wang Huaping: “Super imitation cotton†not only pursues cotton fabrics in terms of fiber surface morphology and fabric style, but also focuses on the performance of fabric products, such as ultra-cotton imitation cotton, especially the dynamic thermal comfort performance closely related to underwear and casual sportswear. The ultra-imitation cotton project is designed and controlled from chemical structure, fiber structure and fabric structure, and includes multiple technical means such as copolymerization, blending, profiled, mixed fiber and surface treatment. It is important to overcome the uniformity of the distribution of modified groups in the copolymerization process, to control the structure of macromolecular sequences and the structure of amorphous regions, to achieve controllable polymerization process; to design new fiber cross-section shapes such as flat, cross and hollow, to control the wicking of fiber products. Effect, improve the ability of gas permeability and moisture permeability; design organic and inorganic hydrophilic agent compounding, combined with alkali reduction treatment, regulate the groove structure and hydrophilic property of fiber surface, improve moisture absorption capacity and wetting speed. Donghua University is working on the basic research of hydrophilic mechanism, thermal insulation mechanism and dynamic heat and humidity comfort performance mechanism, in order to establish a database of structure and effect relationship between fiber multiple structure and product performance.
Reporter: It is understood that compared with the previous development of single differential technology or single functional product, the research and development of “super-imitation cotton†products pay more attention to the integration of various differential and functional technologies, emphasizing polymerization, spinning and weaving. And the integration of dyeing and finishing technology, please analyze the difference.
Wang Huaping: The current “super-imitation cotton†is obviously different from the previous development of single differentiation technology or single-function product. The research and development of “ultra-imitation cotton†technology and products combines polymerization, blending, spinning and surface treatment. Integration of multiple differential functional technologies such as spinning/weaving, dyeing and finishing. For example, the super-imitation cotton product “Rui Mian†jointly developed by Donghua University and Jinhui New Materials Co., Ltd. first uses the copolymerization modification technology to add three single, four single, five single and inorganic particles to dye the fiber and soften. The regulation of hydrophilicity and hydrophilicity is followed by spinning with a special-shaped spinneret and mixing and using the different shrinkage characteristics of FDY and POY to control the fluffiness of the fiber, so that the style of the fabric is closer to that of cotton fiber. In the post-processing process, warp sizing, structure design and weaving process should be designed according to the performance characteristics of “Rui Mianâ€. Through different weaving processes and dyeing and finishing conditions on different textile models, the finished fabrics will appear stunned. Different styles and feels.
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