Method for preparing PBT/PET 3-D crimped fiber and use thereof

A three-dimensional crimping and fiber technology, applied in fiber processing, filament/thread forming, conjugated synthetic polymer artificial filament, etc., can solve the limitation of PBT fiber use, strong temperature dependence of PBT fiber strength, PBT fiber Problems such as low heat distortion temperature

Inactive Publication Date: 2007-05-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal deformation temperature of PBT fibers is low, the strength of PBT fibers is highly dependent on temperature, and the price of PBT fibers is much higher than that of PET fibers, so the use of PBT fibers is subject to certain restrictions.

Method used

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  • Method for preparing PBT/PET 3-D crimped fiber and use thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] PBT / PET three-dimensional crimped fiber

[0027] Raw material specifications Intrinsic viscosity [η] of PBT chips: 1.00dl / g, PET intrinsic viscosity [η]: 0.64dl / g.

[0028] The composite ratio of PBT / PET three-dimensional crimped fiber is 50:50, and the fiber fineness is 11.11dtex.

[0029] Adopt the production process route of accompanying drawing 1:

[0030] PBT slices are dried, melted at low temperature and extruded at high temperature by the screw, metered and then enter the side-by-side composite component for parallel compounding and distribution, and compound side by side with PET at the composite spinneret; PET chips are dried and extruded through the screw at high temperature and low temperature , After metering, it enters the side-by-side composite component, performs parallel compound distribution, and is compounded side by side with PBT at the composite spinneret; the side-by-side composite fiber coming out of the spinneret is subjected to ring blowing, oi...

Embodiment 2

[0043] PBT / PET three-dimensional crimped fiber

[0044] Raw material specifications Intrinsic viscosity [η] of PBT chips: 1.00dl / g, PET intrinsic viscosity [η]: 0.64dl / g. The composite ratio of PBT / PET three-dimensional crimped fiber is 40:60, and the fiber fineness is 8.88dtex.

[0045] Adopt the production process road of accompanying drawing 1:

[0046] PBT slices are dried, melted at low temperature and extruded at high temperature by the screw, metered and then enter the side-by-side composite component for parallel compounding and distribution, and compound side by side with PET at the composite spinneret; PET chips are dried and extruded through the screw at high temperature and low temperature , After metering, it enters the side-by-side composite component, performs parallel compound distribution, and is compounded side by side with PBT at the composite spinneret; the side-by-side composite fiber coming out of the spinneret is subjected to ring blowing, oiling, windi...

Embodiment 3

[0058] PBT / PET three-dimensional crimped fiber

[0059] Raw material specifications Intrinsic viscosity [η] of PBT chips: 1.00dl / g, PET intrinsic viscosity [η]: 0.64dl / g.

[0060] The composite ratio of PBT / PET three-dimensional crimped fiber is 30:70, and the fiber fineness is 12.10dtex.

[0061] Adopt the production process route of accompanying drawing 1:

[0062] PBT slices are dried, melted at low temperature and extruded at high temperature by the screw, metered and then enter the side-by-side composite component for parallel compounding and distribution, and compound side by side with PET at the composite spinneret; PET chips are dried and extruded through the screw at high temperature and low temperature , After metering, it enters the side-by-side composite component, performs parallel compound distribution, and is compounded side by side with PBT at the composite spinneret; the side-by-side composite fiber coming out of the spinneret is subjected to ring blowing, oi...

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Abstract

The invention involves a product method of PBT / PET 3D crimp fiber fabrication which includes steps: (1) PBT biopsies are composed with the PET on the after drying; (2) PET slices are after drying, through high-temperature melting e composite; (3) After blowing Central, greasing winding drive, feed, Sheng be parallel wire composite fiber winding wire; After balancing, cluster, the Baptist tensile oil bath, steam tensile, greasing cut off heat and relaxation to be stereotyped PBT / PET 3D curly fibers. The fibers produced through the method are system of the fiber's flexibility, dyeability and heat resistance and used in flexible woven and knitted fabrics such as high-end sportswear, stretch jeans and strait jacket, Nonwovens and filler widely.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a preparation method and application of a PBT / PET three-dimensional crimped fiber. Background technique [0002] PET is the abbreviation of polyethylene terephthalate. PET fiber has the advantages of high modulus, good heat resistance, and high plasticity in mechanical properties; however, PET fiber has disadvantages such as poor dyeing performance and low elasticity. [0003] PBT is the abbreviation of polybutylene terephthalate. PBT fiber has good durability, dimensional stability and good elasticity, and its elasticity is not affected by humidity; PBT fiber and its products are soft to the touch and hygroscopic. , Good abrasion resistance and fiber crimp, excellent tensile elasticity and compression elasticity, elastic recovery rate is better than polyester; it has special stretchability under dry and wet conditions, and the elasticity is not affected by the temperature chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/32D01F8/14D02G1/18
Inventor 龚静华
Owner DONGHUA UNIV
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