Dyeing Adds Beautiful And Bright Coat To Fiber.

< p > < strong > fiber modification resulted in dyeing upgrading < /strong > < /p >.

< p > conventional polyester (polyester) < a href= "//www.sjfzxm.com/news/index_c.asp" > fiber > /a > has many excellent properties. At the same time, because of its close molecular structure, high crystallinity and orientation, and lack of polar groups, it can only be dyed with disperse dyes at high temperature (120-135 degree) or under the condition of carrier, so as to achieve higher dye uptake.

When blended with natural fibers or some chemical fibers, there are many problems such as poor dyeing process, increasing dyeing cost, increasing dye content in wastewater, and increasing the cost of wastewater treatment.

Therefore, the dyeing modification of polyester fiber has always been the focus of research and development.

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< p > dyeable and deep dyed fibers have successfully solved many problems of < a href= "//www.sjfzxm.com/news/" > fiber dyeing > /a > modification. It is an upgraded version of cationic dyeable fibers.

Third monomers, such as phthalate two formic acid sulfonate, are added onto the PET macromolecule chain by copolymerization and grafting. The anions of these groups are easy to react with cationic ions in cationic dyes so that the dyes are fixed in fibers.

Due to the addition of new groups on the macromolecular chains, the original structure of the fibers is destroyed, and the melting point, the glass pition temperature and the crystallinity of the fibers are reduced.

The increase of the amorphous zone of the fiber will help dye molecules penetrate into the fiber, dye them under cationic pressure at atmospheric pressure, or add fourth monomer components on the PET macromolecule chain, such as the introduction of PEG flexible segments, which makes the molecular structure more loose and the amorphous zone larger. It helps dye molecules penetrate into the fiber and combine with the anionic groups in the fiber, which can be dyed at room temperature and atmospheric pressure.

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< p > in addition, the 1, 3 maladienyl (PTT) and poly (butylene terephthalate) (PBT) fibers of PTA are similar to those of polybutylene terephthalate (PTA) fibers.

As early as 1941, PTT fiber has already had mature technology. Because of the high cost of raw materials, it has not been industrialized.

After years of development, many large enterprises such as DuPont Co, Asahi Kasei Corporation, Korea SK chemical company and Canada polymer Co., Ltd. are producing this kind of fiber.

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< p > < strong > downstream products unique style < /strong > < /p >

< p > dyeable and deep dyed fibers have lower dyeing temperature, lower energy consumption and higher efficiency.

The super soft and easy dyeable polyester fiber developed by many units such as Donghua University and Shanghai union fine Fiber Co., Ltd. is a new dyeable and deep dyed fiber. It is a new generation of modified polyester fiber.

The director of Shanghai union fine fiber company introduces that the main industrial chain of polyester technology, which is super soft and easy to dye polyester fiber, "polymerization, < a href=" //www.sjfzxm.com "> spinning /a > dyeing and finishing", embodies the excellent performance of energy saving and emission reduction, low carbon and environmental protection.

The low temperature reaction in polyester synthesis has a certain reduction in energy consumption compared with that of the original polyester product, and the drying temperature, spinning temperature and heating temperature of the spinning process 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.

The company has registered a trademark for this kind of fiber.

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< p > dyeable and deep dyed polyester has the characteristics of easy dyeing, dark coloring and bright coloring. The product has high color fastness and wide chromatogram. It overcomes the defects of conventional polyester dyeing with higher temperature, and has the advantages of good air permeability and moisture permeability. It can obtain different color and multicolor effect when blended with other fibers, interlaced and interwoven, and the fabric style is unique.

According to the introduction, pat is different from the physically modified differential polyester fiber. The fiber is chemically differentiated and has the characteristics of super soft, deep dyeing and anti pilling.

From 2009 to 2011, Shanghai union fine Fiber Co., Ltd., Donghua University and Wujiang East a target= "_blank" href= "//www.sjfzxm.com/" > textile < /a > Group Co., Ltd. jointly developed and produced super soft and easy dyeable polyester fiber and comfort fabric products, a total of 30 thousand and 300 tons, and promoted and applied in more than 130 downstream enterprises in Shanghai, Jiangsu, Zhejiang, Shandong, Xinjiang and other provinces and cities. The development of new polyester, fiber and fabric series products totaled 458 million yuan, and realized profits and taxes of around 54 million 760 thousand yuan, and export amounted to 3 million 227 thousand and 800 US dollars, which created good economic benefits.

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< p > because of its easy dyeing and deep dyeing characteristics, it can be interwoven or blended with < a href= "//www.sjfzxm.com" > wool > /a > silk, protein fiber, spandex, acetate fiber and ordinary polyester, so as to achieve the same bath dyeing. The fabric has unique style. It is the ideal fabric for all kinds of fashion such as jacket, windbreaker, skirt and trousers.

According to the relevant person in charge of Sheng Hong Company of Jiangsu, the cationic series dyeable fibers produced by Sheng Hong greatly improved the dyeability of polyester, increased softness, reduced crystallinity and improved dyeing effect.

Sheng Hong fully exerts the characteristics of dyeable fibers and interacts easily dyed fibers with ordinary polyester and other fibers to form a color effect. It can also change the proportion of cationic and polyester fibers and flower patterns according to customer needs, thus forming different colors.

The official said, at present, the products of the enterprise have been widely used in downstream areas such as shading cloth, sportswear, casual wear, jacket and so on.

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< p > < strong > functional upgrading can replace other varieties < /strong > < /p >.

< p > dyeable and deep dyed fibers are comparable to natural fibers in dyeing and coloring and wearing comfort. They can be directly woven into high-grade fabrics and blended with other synthetic fibers and natural fibers to produce wool like, linen like and imitation fabrics.

This characteristic makes it have a good development prospect in < a target= "_blank" href= "//www.sjfzxm.com/" > clothing < /a > household a href= "//www.sjfzxm.com" > textile > /a > and automobile accessories.

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< p > take cationic dyeable fibers as an example.

Cationic dyeable fibers are similar to wool because of their dyeing temperature, and because of their soft handle, spinning of all kinds of fancy yarns with wool blended with wool or completely replacing wool in wool spinning industry has gradually become a trend.

Due to the continuous improvement of printing and finishing technology, the high grade suit fabric made of blended yarn with high proportion of cationic dyeable fibers has been adjusted and processed. Its handle and drapability are closer to wool products, and it is the first choice for export products.

In the home textile industry, the production of artificial fur mostly depends on imported acrylic fibers and cationic dyeable fibers, which can be used in the same bath dyeing with acrylic fibers.

Compared with conventional polyester, cationic modified polyester improves dyeing performance due to the weakening of regularity of molecular structure, and improves the pilling properties, moisture absorption and antistatic properties of polyester fibers.

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< p > at present, cationic modification < a href= "//www.sjfzxm.com" > polyester fiber < /a > is widely used in silk like, wool like and other textile products.

In addition, in recent years, the performance of the textile products has been greatly improved by the blending of cationic fibers with various fibers of different sizes, different lengths, different cross sections, different shrinkage fibers, and a variety of colored polyester fibers and other chemical fibers.

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