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Low temperature dyeable flexible bright polyester fiber and production method thereof

A polyester fiber, flexible technology, applied in the field of polyester fiber, low temperature dyeable flexible glossy polyester fiber and its preparation, can solve the problems of lowering the dyeing temperature, the actual effect is not obvious, and the processing technology is difficult, so as to achieve soft luster, bright color effect

Inactive Publication Date: 2009-08-05
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The soft luster processing of polyester fiber is mainly realized by adding an alkali weight reduction accelerator to the high-temperature hot lye to treat the fiber. The above-mentioned technology has certain problems in terms of environmental protection and energy saving.
In improving the dyeing performance of polyester fibers, some methods add a third monomer similar to polyethylene glycol during polymerization to lower the dyeing temperature by reducing the compact structure of polyester fibers. This method is difficult and difficult to process. Great influence on the properties of polyester fiber
Some also use dyeing auxiliaries or change the structure of disperse dyes to achieve dyeing at lower temperatures, but the actual effect is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The conventional polyester chips are charged at room temperature, and the temperature is slowly raised to 75°C in a vacuum drying oven, and the vacuum degree is 1.013*10 at the same time. 5 Pa, heat preservation for 1h, heat to 160℃, heat preservation for 8h, and slowly cool to room temperature under vacuum condition. The ionic copolyester component is charged at room temperature, and the temperature is slowly raised to 65°C in a vacuum drying oven, and the vacuum degree is 1.013*10 at the same time. 5 Pa, heat preservation for 1h, heat up to 110°C, heat preservation for 8h, and slowly cool to room temperature under vacuum. Conventional polyester chips and ionic copolyester are mixed uniformly according to a weight ratio of 99:1, and are spun on a φ25mm small test spinning machine within a temperature range of 320℃. The hot plate temperature is 95℃, and the hot plate temperature is 190℃. The elongation is 3.0, the winding speed is 800m / min, and the fiber breaking strength i...

Embodiment 2

[0024] The conventional polyester chips are charged at room temperature, and the temperature is slowly raised to 75°C in a vacuum drying oven, and the vacuum degree is 1.013*10 at the same time. 5 Pa, hold for 1h, heat up to 110°C, hold for 10h, and slowly cool to room temperature under vacuum. The ionic copolyester component is charged at room temperature, and the temperature is slowly raised to 65°C in a vacuum drying oven, and the vacuum degree is 1.013*10 at the same time. 5 Pa, heat preservation for 1h, heat to 95°C, heat preservation for 12h, and slowly cool to room temperature under vacuum. The conventional polyester chips and the ionic copolyester are mixed uniformly according to the weight ratio of 90:10, and they are spun on the φ25mm small experimental spinning machine within the temperature range of 280°C. The hot plate temperature is 65°C and the hot plate temperature is 140°C. The elongation is 4.5, the winding speed is 1200m / min, and the fiber breaking strength is 3...

Embodiment 3

[0027] The conventional polyester chips are charged at room temperature, and the temperature is slowly raised to 75°C in a vacuum drying oven, and the vacuum degree is 1.013*10 at the same time. 5 Pa, heat preservation for 1h, heat to 150℃, heat preservation for 10h, and slowly cool to room temperature under vacuum. The ionic copolyester component is charged at room temperature, and the temperature is slowly raised to 65°C in a vacuum drying oven, and the vacuum degree is 1.013*10 at the same time. 5 Pa, heat preservation for 1h, heat up to 105°C, heat preservation for 8h, and slowly cool to room temperature under vacuum. Conventional polyester chips and ionic copolyester are mixed uniformly according to the weight ratio of 85:15, and they are spun on the φ25mm small experimental spinning machine within the temperature range of 280℃~295℃. The hot plate temperature is 85℃ and the hot plate temperature is 190. ℃, draw ratio is 3.7, winding speed is 1000m / min, fiber breaking strength...

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Abstract

The invention relates to a lower-temperature, dyeable and soft-glossy lanon and a preparation method thereof, belonging to the manufacture field of synthetic fibers. The preparation method is characterized in that conventional polyester slices and ionic co-polyester slices are singly dried or mixed and dried under a vacuum condition and the dried mixture is spinned at a temperature ranging from 280 DEG C to 320 DEG C under the conditions of a hot tray temperature of 65 DEG C to 95 DEG C, a hot plate temperature of 140 DEG C to 190 DEG C, a drawing ratio of 3.0 to 4.5 and a winding speed of 800-1200m / min; then the mixture is treated in a treatment solution which comprises fibers and 10 percent to 20 percent of sodium hydroxide by weight and has a bath ratio of 1:20 to 1:50 at a temperature of 80 DEG C to 100 DEG C for 30min to 60min, and the fibers with the alkali mass loss rate of 7 percent to 20 percent after alkali treatment is dyed in a disperse dye solution at a temperature of 90 DEG C to 102 DEG C for 45min to 60min. The lower-temperature, dyeable and soft-glossy lanon can achieve a dyeing rate of 90 percent to 98 percent under a low-temperature condition and has bright texture color and soft luster.

Description

Technical field [0001] The invention relates to a polyester fiber, more specifically a low-temperature dyeable flexible gloss polyester fiber and a preparation method thereof, and belongs to the field of synthetic fiber manufacturing. Background technique [0002] Polyester fiber has a variety of properties suitable for clothing applications, so it has achieved remarkable development since its mass production. At present, the global output of polyester fiber accounts for about 68% of the world's total chemical fiber output. my country's polyester fiber output ranks first in the world, accounting for more than 80% of the total chemical fiber output. [0003] With the development of technology, while polyester fibers continue to meet social needs in quantity, they are also undergoing more humane evolution in quality. For example, through special-shaped cross-section, copolymerization and composite technologies, the polyester fiber has the functions of thickness, profile, and high s...

Claims

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Application Information

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IPC IPC(8): D01F8/14D06M11/38D06P1/16D06P3/54
Inventor 刘越崔河马晓光
Owner SHAOXING UNIVERSITY
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