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

< p > improved fiber < a href= "http://www.91se91.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＞　　據項目帶頭人東華大學教授顧利霞介紹，該項目列入國家“十一五”科技支撐計劃，項目基于大分子多重結構與性能關系的系統研究，為使聚酯纖維兼具易染性和柔軟性，項目組首先發明了含側甲基丙二醇(MPD)為四單、陽離子染料染座間苯二甲酸二乙二酯-5-磺酸鈉為三單、與銻系復合催化劑形成銻-多元單體絡合體系和共縮聚可控關鍵技術，有效抑制了三單離子聚集和自催化，合成了可紡性良好、結構均勻、易染的新型共聚酯;其次發明了錯位均化、階段強化反應新技術，解決了三單、四單濃度局部漲落、分散不勻問題，實現了MCDP在大容量連續聚合裝置上的穩定生產;再次創建了熔體直紡短纖維和高速紡長絲低溫高效凝固和中溫均區定型技術，生產了柔軟易染細旦、超細旦、潛在卷曲等系列新型共聚酯纖維，纖維手感柔軟、光澤和風格獨特，染色飽和值在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= > http://www.91se91.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= "http://www.91se91.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＞　　據介紹，該項目建立了聚合、紡絲、織造、印染、服裝產業鏈，引領了輕薄舒適針織、精仿毛混紡服用面料和高耐光、耐磨裝飾用織物市場對聚酯纖維新需求，已在上海新聯紡進出品有限公司等全國80多個企業推廣應用，近三年直接經濟效益7.76億元，利潤0.88億元，在上海、江蘇、浙江、山東、新疆等省市自治區共計130多個下游企業推廣應用，開發的新型聚酯、纖維及面料系列產品累計新增產值4.58億元，實現利稅5476萬元左右，出口創匯達322.78萬美元，創造了良好的經濟效益，也有效緩解了大容量連續設備聚酯纖維同質同構化問題，促進了量大面廣聚酯纖維的升級換代，提升了我國聚酯生產與應用技術，推動了我國紡織染整行業的技術進步和產業升級。

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