Antistatic ultrafine fiber and its manufacturing method
An antistatic, ultra-fine fiber technology, applied in the field of polyester ultra-fine fiber and its manufacturing, can solve the problems of twisting deformation, fluffing, inability to impart sufficient antistatic properties, etc., and achieve the effect of excellent durability
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[0241] Hereinafter, examples and comparative examples are given to further specifically explain the present invention, but the scope of the present invention is not limited by them as long as it does not exceed the gist. In addition, each characteristic value in the Example was measured by the following method.
[0242] (I. In the first invention of the present application, the copolyester B is an example of a polyester copolymerized with an organic ultraviolet absorbing component)
[0243] (1) Intrinsic viscosity
[0244] It is dissolved in o-chlorophenol and measured at 35°C using an Ubbelohde viscometer.
[0245] (2) Spinning yarn breaks
[0246] The composite spinning equipment was used to perform melt spinning for one week, and the number of yarn breaks was recorded, and the number of spinning yarn breaks per hammer per day was regarded as spinning yarn breakage. Among them, the yarn breakage caused by man-made or mechanical reasons is excluded from the number of yarn breakages. ...
Embodiment I-1
[0287] The polyester undrawn yarn obtained by the foregoing method was stretched to 1.8 times with a preheating roll temperature of 80°C using a known drawing machine at a drawing speed of 600m / min, and then performed at a slit heater temperature of 190°C. After heat setting, the obtained drawn yarn was used to produce a circular knitted fabric, and the antistatic property was measured.
[0288] During melt spinning, the spinning yarn breakage was 3 times / day, and the stretching yarn breakage was 2 times / day.
[0289] In addition, the single yarn fineness of the obtained stretched yarn was 1.16 dtex, the strength was 4.8 cN / dtex, and the elongation was 24%. The charging voltage in the charging test method B of the circular knitted fabric was 900 V, and the ultraviolet transmittance was It is 10% and the L value is 84%.
Embodiment I-2
[0291] The polyester undrawn yarn obtained by the aforementioned method was used with a known false twisting machine under the conditions of a false twist number of 2400 T / m, a heater temperature of 210°C, and a yarn speed of 250 m / min of the second delivery roller 11 , Stretch to 1.8 times the stretch ratio, use the obtained false twisted processed yarn to manufacture a circular knitted fabric, and measure the antistatic property. The results of process stability and antistatic performance during melt spinning are shown in Table I-1.
[0292] Next, the fabric was subjected to a relaxation treatment with boiling water for 20 minutes using a liquid flow dyeing machine, and then subjected to a predetermined shape treatment, and then further subjected to a dyeing and final setting treatment to make a fabric.
[0293] The antistatic performance of the obtained fabric was 15 seconds, and when it was subjected to sensory evaluation, the result was very deep, high-quality, and soft.
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Abstract
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