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Ordinary polyester fibers are hydrophobic synthetic fibers, the lack of a hydrophilic group on the molecular chain, high crystallinity, compact structure, when the temperature is low, the dye molecules is difficult to penetrate into the interior of the fiber, resulting in staining difficult. Usually polyester fiber with disperse dyes in the presence of high temperature and high pressure, hot melt or carrier dyeing equipment and processes demanding higher production costs and energy consumption, and monotone color, bright enough, directly affect the polyester the development of varieties of fabrics. In order to improve the dyeing properties of polyester, researchers considered to proceed from the molecular structure, and improve the degree of molecular chain loose to facilitate the entry of the dye molecules. Over the years the main method: (1) with molecular bulky compound copolymerizable; (2) and having a plasticizing effect of the compound was mixed spinning; (3) into having an ether bond such as and disperse dye affinity a group, and the like. The Shanghai Alliance Kyrgyzstan Synthetic Fiber Co., Ltd. developed PASTER fiber lines in the molecular chain of the introduction of the new glycol and cationic dyeable group of a new polyester fiber. The product has a normal pressure can be dyed, Yan bright color (deep-dyed), soft fabric, anti pilling fluff outstanding performance, excellent spinnability, as existing cationic dye-dyeable polyester upgrading products can be alternative to acrylic, widely used in the development of the cotton type, hair type products. PASTER performance and a range of fiber dyeing process research and development, not only overcome the traditional polyester fiber dyeing energy consumption and the shortcomings of the waste of resources, but also to solve the blended product especially wool products, wool injury, and thus has important value and significance. In order to study the physical properties of the PASTER fibers, respectively, by differential scanning calorimetry France (DSC), X-ray diffraction method and the fiber strength tester for testing, the system of the thermal performance of the PASTER fibers, crystallization properties and mechanical properties, the following conclusions: 1.PASTER a glass transition temperature (Tg), crystallization temperature (Tc), the melting point (Tm), the area and the heat of fusion of the crystallization peak were lower than conventional polyester and common ECDP of fibers, wherein Tg decreased to about 70 ℃ Dyes on becomes easy, and the crystallization peak area display the degree of crystallinity is reduced, the expansion of the amorphous region, so that the dye molecules can diffuse into the fiber molecule inside the increased opportunities, and further reducing the dyeing conditions. The 2.PASTER the breaking strength, elongation at break, and curled elastic rate lower than conventional polyester and ECDP, further evidence of the decline in the degree of crystallinity, molecular structure becomes loose, soft. Study PASTER fiber kinetics, thermodynamic properties, the results show that: the PASTER fibers from around 90 ℃ dyeing rate accelerated dyeing rate increases greatly, basically reached the boiling dye 60min after the dyeing balance at about 100 ℃, and with the temperature, half dyeing time, to improve its dyeing rate increases with increasing temperature, thereby reducing staining balance the time required; found by fitting a straight line on the adsorption isotherm, the dye adsorbed on the PASTER type found Freundlich type, but as the temperature increases, the adsorption type gradually close to the Langmuir type. Finally, according to the the two blended fiber dyed performance of different, adjust best blended the dyeing process, the more satisfied PASTER / acrylic PASTER / wool blend same color staining effect, to provide a reference for PASTER blended products industrial production.
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