Key Technologies Of Continuous Polymerization And Soft Dyeable Fiber Forming And Energy Saving Dyeing And Finishing

< p > improved fiber < a href= "//www.sjfzxm.com/news/index_c.asp" > dyeability < /a > has always been an important direction of functionalization of polyester fibers. At home and abroad, dyeing and modified polyester fibers such as CDP and ECDP have been developed. However, there is still a difficult problem to control polymerization. Fabric needs alkali reduction treatment, energy consumption and emission bottleneck problems have not been solved, which seriously affects the popularization and application of polyester fiber modification technology.

Among them, the homogeneous isomorphism of polyester fibers in China is serious, and pformation and upgrading are difficult. It is urgent to solve the key technology of large capacity functional polyester continuous polymerization.

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< p > the key technology of continuous polymerization of copolyester and soft dyeable fiber forming and energy saving dyeing and finishing completed by Donghua University and Shanghai union Ji Synthetic Fiber Co., Ltd. effectively solved the problem of isomorphism of polyester, breaking the energy consumption of polyester production and discharging the neck of the bottle.

The "super soft and dyeable polyester fiber product" developed by the project has the characteristics of low carbon and environmental protection with normal pressure boiling dyeing and alkali free treatment, super soft handle, good hygroscopicity and remarkable anti pilling properties.

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< p > < strong > > the three invention solves the long-term problem < /strong > < /p >

＜p＞　　据项目带头人东华大学教授顾利霞介绍，该项目列入国家“十一五”科技支撑计划，项目基于大分子多重结构与性能关系的系统研究，为使聚酯纤维兼具易染性和柔软性，项目组首先发明了含侧甲基丙二醇(MPD)为四单、阳离子染料染座间苯二甲酸二乙二酯-5-磺酸钠为三单、与锑系复合催化剂形成锑-多元单体络合体系和共缩聚可控关键技术，有效抑制了三单离子聚集和自催化，合成了可纺性良好、结构均匀、易染的新型共聚酯;其次发明了错位均化、阶段强化反应新技术，解决了三单、四单浓度局部涨落、分散不匀问题，实现了MCDP在大容量连续聚合装置上的稳定生产;再次创建了熔体直纺短纤维和高速纺长丝低温高效凝固和中温均区定型技术，生产了柔软易染细旦、超细旦、潜在卷曲等系列新型共聚酯纤维，纤维手感柔软、光泽和风格独特，染色饱和值在1.52

Controlled by 4.45, it can be used to imitate cotton, wool, silk, etc., and finally broke through the key technologies such as low temperature, low tension, low pressure, deep dyeing, medium and light coloring.

A series of comfortable high grade fabrics with soft, high color fastness and anti fuzzing properties have been developed.

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< p > it is worth mentioning that super soft and easy dyeable copolyester, fiber and fabric dyeing technology starts with the design of polyester macromolecule structure, and optimizes esterification and condensation process. The research group solves the key technology of self catalysis and ionization aggregation of cationic dyeable groups, realizes the molecular weight and sequence distribution control of super soft and easy to dye copolyester, and selects a variety of modified combinations, so that the fiber feels soft, and solves the key technology of deep dyeing of fiber and fabric atmospheric cationic dyes. The super soft and easy dyeable polyester fiber fabric has the advantages of super soft, soft pilling, anti pilling, Hikaruzawa Youwa, bright coloring, and high color fastness.

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< p > < strong > < a > href= > //www.sjfzxm.com/news/index_c.asp > > energy saving and emission reduction > /a > world leading < /strong > /p >

"P >" project is an integrated innovation of new fiber materials and textile dyeing and finishing technology, textile dyeing and finishing technology innovation and fiber softness performance is also particularly important.

Project polymerization and spinning temperature lower than conventional polyester, reduce energy consumption by about 15%, dyeing at normal pressure, fabric without alkali reduction treatment, reduce water consumption and energy consumption of about 20%.

Gu Lixia said.

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< p > super soft and easy to dye polyester fiber products, the main industrial chain of polyester technology "polymerization, spinning, dyeing and finishing" embodies the excellent performance of energy saving, emission reduction, low carbon and environmental protection, and has important positive significance for saving energy and protecting the environment.

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< p > "low temperature reaction in polyester synthesis has a certain reduction in energy consumption compared with that of the original polyester product. In the spinning process, both the drying temperature, spinning temperature and heating temperature are lower than those of conventional polyester.

Especially in the dyeing and finishing process, the new polyester product adopts atmospheric boiling dyeing process without alkali reduction treatment process, especially in energy conservation and environmental protection.

Gu Lixia said.

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< p > 2012, experts from the China Textile Industry Federation identified the results of the project as follows: "the selection of multi-component copolyester polyesters with high pressure and deep dyeing, large volume continuous polymerization, direct spinning of staple fibers, high-speed spinning of filaments, combination of easy to dye and softness of fibers, dark dyeing at atmospheric pressure, saturation of dye saturation, high color fastness, no alkali reduction, and energy saving and emission reduction play an important role in the world.

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< p > < strong > > a href= "//www.sjfzxm.com/news/index_c.asp" > school enterprise combination < /a > farewell homogenization < /strong > /p >

Donghua University and Shanghai Lian Ji Synthetic Fiber Co., Ltd. jointly set up production, teaching and research joint use, set up a one-stop demonstration base for polymerization, spinning, weaving, printing and dyeing and clothing industry chain. The technology is mature and stable, and the effect of energy saving and emission reduction is remarkable. It plays a good exemplary role in upgrading industrial upgrading and enhancing the added value of products. The series of comfortable high and middle grade fabrics are set up in soft, anti pilling and high color fastness. The processing adaptability is strong, the luster is unique, the simulation effect is outstanding, and the high-grade cotton, wool and silk products have been successfully developed. It has played a leading and exemplary role in the pformation and upgrading of chemical fiber industry and the functional polyester of large capacity. < p > "super soft and easy dyeable polyester fiber preparation and application technology" as a

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＜p＞　　据介绍，该项目建立了聚合、纺丝、织造、印染、服装产业链，引领了轻薄舒适针织、精仿毛混纺服用面料和高耐光、耐磨装饰用织物市场对聚酯纤维新需求，已在上海新联纺进出品有限公司等全国80多个企业推广应用，近三年直接经济效益7.76亿元，利润0.88亿元，在上海、江苏、浙江、山东、新疆等省市自治区共计130多个下游企业推广应用，开发的新型聚酯、纤维及面料系列产品累计新增产值4.58亿元，实现利税5476万元左右，出口创汇达322.78万美元，创造了良好的经济效益，也有效缓解了大容量连续设备聚酯纤维同质同构化问题，促进了量大面广聚酯纤维的升级换代，提升了我国聚酯生产与应用技术，推动了我国纺织染整行业的技术进步和产业升级。

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