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Moisture-absorbing antistatic dyeable polypropylene fibre and preparation method thereof

A polypropylene fiber, polypropylene technology, used in fiber processing, conjugated synthetic polymer rayon, filament/thread forming, etc., can solve the problems of moisture absorption, dyeability and poor antistatic properties, and achieve antistatic properties. High performance and good hygroscopicity

Inactive Publication Date: 2010-06-23
CTA HIGH TECH FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of this invention is to provide a composite spinning technology to prepare hygroscopic, antistatic, and dyeable polypropylene fibers, to overcome the defects of hygroscopicity, dyeability, and poor antistatic performance in the above-mentioned prior art, and to improve the polypropylene fiber. Spinnability, while endowing polypropylene fibers with corresponding functions such as moisture absorption, dyeability and antistatic

Method used

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  • Moisture-absorbing antistatic dyeable polypropylene fibre and preparation method thereof
  • Moisture-absorbing antistatic dyeable polypropylene fibre and preparation method thereof
  • Moisture-absorbing antistatic dyeable polypropylene fibre and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The raw material polypropylene is a commercial product with a melt index of 35g / 10min and a melting point of 166°C; the mass ratio of the hard segment to the soft segment of the self-made PBT-PEG copolyether ester is 60:40, the intrinsic viscosity is 1.02g / dl, and the melting point 198°C, roughly the same as commercially available.

[0040] The mass ratio of sheath / core in the composite fiber is 85:15, and the blending mass ratio of PP and PBT-PEG copolyetherester in the sheath is 94:6. The copolyether ester and polypropylene blend chip (A) constituting the skin layer and the copolyether ester (B) constituting the core layer are pre-dried with dehumidified hot air with a dew point temperature of -70°C at 110°C for 6h, and dried The water content of slices should be less than 50ppm. Melt the above two slices of A and B respectively with two screw extruders (A screw diameter 55mm, B screw diameter 30mm) and adjust the melt temperature. The two-component melts of A and B...

Embodiment 2

[0044] Raw material and spinning equipment are with embodiment 1.

[0045] The mass ratio of sheath / core in the composite fiber is 80:20, and the blending mass ratio of PP and PBT-PEG copolyetherester in the sheath is 92:8. The technological parameters of the spinning-post-processing process are: melt temperature 245°C, stretching roll GR1 temperature 52°C, setting roll GR2 temperature 108°C, draw ratio 2.6 times, winding speed 2565m / min.

[0046] The specification of the obtained fiber is 123dtex / 72f, the breaking strength is 3.51cN / dtex, the breaking elongation is 51.4%, the equilibrium moisture regain is 1.55%, and the volume specific resistance of the fiber is 3.3×10 9 Ω·cm, the induced static voltage of the fabric is 3.0kV, and the half-life is 3.9s. The optical micrographs of the fiber sections after dyeing showed that the core layer and the skin layer were dyed at the same time. The electrostatic voltage of the dyed fabric is 3.0kV, and the half-life is 4.9s. The dye...

Embodiment 3

[0048] The raw material polypropylene is a commercial product with a melt index of 28 g / 10 min and a melting point of 166° C.; the self-developed PBT-PEG copolyether ester is the same as in Example 1.

[0049] The mass ratio of sheath / core in the composite fiber is 80:20, and the blending mass ratio of PP and copolyetherester in the sheath is 90:10. Spinning equipment is with embodiment 1. The technological parameters of the spinning-post-processing process are: melt temperature 250°C, stretching roll GR1 temperature 55°C, setting roll GR2 temperature 112°C, draw ratio 2.6 times, winding speed 2560m / min.

[0050] The specification of the obtained fiber is 123dtex / 72f, the breaking strength is 3.32cN / dtex, the breaking elongation is 46.4%, the equilibrium moisture regain is 1.58%, and the volume specific resistance of the fiber is 2.6×10 9 Ω·cm, the induced static voltage of the fabric is 2.76kV, and the half-life is 3.1s. The optical micrographs of the fiber sections after d...

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Abstract

The invention discloses a moisture-absorbing antistatic dyeable composite type polypropylene fibre and a preparation method thereof. The fibre is a skin core--blending composite type polypropylene fibre manufactured in composite spinning technology by taking copolyether ester with the moisture-absorbing, dyeable and antistatic characteristics as a core layer and taking the mixture of polypropylene and the copolyether ester as a skin layer. The copolyether ester one of the copolymers formed from polyethylene terephthalate and poly alkylene ether glycol, the mass ratio of the skin layer to the core layer is 88:12 to 60:40, and the blending mass ratio of the polypropylene to the copolyether ester in the skin layer is 95:5 to 75:25. The fibre has good spinnability and white color in the machining process; and the fibres can be used for spinning long and short fibres and used as woven fabrics, knitted fabrics or nonwovens and endow the fabrics with good moisture absorption, antistatic behaviour, dryness and high color fastness.

Description

technical field [0001] The invention relates to a hygroscopic, antistatic and dyeable polypropylene fiber, more specifically, to a hygroscopic, antistatic and dyeable polypropylene fiber which does not contain inorganic conductive media such as carbon powder and carbon nanotubes. Background technique [0002] Conductive and antistatic fiber is a high-tech, high-value-added polymer fiber material, which has very important and extensive demands in civil, industrial, decorative and military applications. There are mainly the following types of polymer conductive and antistatic fibers: (1) pure conductive polymer fibers; (2) metal fibers; (3) polymer surface carburized fibers; (4) carbon conductive fibers; (5) ) blended carbon black conductive fiber; (6) composite carbon black conductive fiber; (7) composite white carbon black antistatic fiber. These fibers each have different deficiencies in the production process and performance. [0003] At present, polymer conductive and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/06D01D5/34
Inventor 袁平许志强高扬王春梅张大省王锐朱志国
Owner CTA HIGH TECH FIBER
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