Differential-shrinkage superfine composite fiber and processing process thereof

A technology of ultra-fine composite fiber and processing technology, applied in fiber treatment, conjugated synthetic polymer artificial filament, filament/thread forming, etc., can solve the problem of fiber microstructure damage, limited product varieties, and mechanical properties that cannot meet the needs of use Requirements and other issues to achieve the effect of uniform structure and good mechanical properties

Inactive Publication Date: 2016-09-28
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] And the prior art such as application number is 032345356, and application number is 2008100636505 then forms superfine fiber by means of sea-island silk spinning method or water-soluble material characteristic, but this mode has special requirement to raw material, and its product variety is limited, and the fiber itself The microstructure is destroyed, and the mechanical properties cannot meet the needs of use

Method used

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  • Differential-shrinkage superfine composite fiber and processing process thereof
  • Differential-shrinkage superfine composite fiber and processing process thereof
  • Differential-shrinkage superfine composite fiber and processing process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] This embodiment is a processing technology of different shrinkage ultrafine composite fibers. The intrinsic viscosity of the copolyester is 0.700dl / g, the melting point is 230°C, the moisture content of the dry slice is less than 50ppm, and the temperature in each zone of the screw is 250-270°C; the relative viscosity of nylon 6 is 2.3 , the moisture content of dry slices is less than 100ppm, and the temperature of each zone of the screw is 260-280°C.

[0032] The mass ratio of modified copolyester to nylon 6 is 30:70, and the cross-section of the fiber is hexagonal star (such as figure 1 shown), the spinning box temperature is 270°C, the side blowing wind speed is 0.4m / s; the first hot roll speed is 2000m / min, the temperature is 70°C; the second hot roll speed is 4000m / min, the temperature is 100°C, and 50dtex / 36f different shrinkage polyester nylon composite FDY.

Embodiment 2

[0034] The setting and working principle of this embodiment are the same as that of Embodiment 1, the difference is that the intrinsic viscosity of the copolyester is 0.700dl / g, the melting point is 232°C, the moisture content of the dry chip is less than 50ppm, and the temperature of each zone of the screw is 250-270°C; nylon 6 is relatively The viscosity is 2.3, the moisture content of dry slices is less than 100ppm, and the temperature of each zone of the screw is 260-280°C.

[0035]The mass ratio of modified copolyester to nylon 6 is 40:60, the cross-section of the fiber is hexagonal star, the temperature of the spinning box is 275°C, the wind speed of side blowing is 0.5m / s; the speed of the first hot roller is 2200m / min, and the temperature is 80 ℃; the speed of the second hot roller is 4200m / min, and the temperature is 110℃, and the different shrinkage polyester nylon composite FDY of 100dtex / 36f is obtained.

Embodiment 3

[0037] The settings and working principle of this embodiment are the same as those of Embodiment 1, the difference is that the intrinsic viscosity of the copolyester is 0.700dl / g, the melting point is 234°C, the moisture content of the dry chip is less than 50ppm, and the temperature in each zone of the screw is 250-270°C; nylon 6 is relatively The viscosity is 2.3, the moisture content of dry slices is less than 100ppm, and the temperature of each zone of the screw is 260-280°C.

[0038] The mass ratio of modified copolyester to nylon 6 is 50:50, the cross section of the fiber is hexagonal star shape, the temperature of the spinning box is 280°C, the wind speed of side blowing is 0.6m / s; the speed of the first hot roller is 2400m / min, and the temperature is 90 °C; the speed of the second hot roller is 4400m / min, and the temperature is 120 °C, and a 150dtex / 36f different shrinkage polyester nylon composite FDY is obtained.

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Abstract

The invention relates to a differential-shrinkage superfine composite fiber and a processing process thereof, and belongs to the technical field of fiber generation. According to a one-step spinning method, modified copolyester and nylon 6 are adopted as raw materials and subjected to copolyester through a screw extruder, and enter double-component composite spinning equipment and specially designed spinneret orifices, and ejected melt is cooled, oiled, drafted, subjected to heat setting and wound. The differential-shrinkage superfine composite fiber is applied to processing suede, waterproof fabric and the like, and the fabric has the advantages of being stiff and smooth, dense, full and the like.

Description

technical field [0001] The invention relates to a different shrinkage superfine composite fiber and a processing technology thereof, belonging to the technical field of fiber generation. Background technique [0002] Composite spinning methods for preparing ultrafine fibers mainly include island-in-the-sea composite spinning and split-off composite spinning. Among them, split-type composite spinning is mainly polyester-nylon composite spinning, and the incompatibility of polyester and nylon is utilized. Under the action of subsequent alkali reduction or certain mechanical force, the fibers are opened to obtain ultra-fine denier fibers. Compared with ordinary fibers, microfibers have extremely small linear density and high specific surface area. The fabrics woven have the characteristics of high coverage, soft touch, comfortable wearing, and soft colors. They are widely used in suede and imitation peach skin. The production of velvet, microfiber leather base cloth, high-dens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/12D01D5/253D01D5/30C08G63/672
CPCD01D5/253D01D5/30D01F8/12D01F8/14C08G63/672
Inventor 王秀华林巧巧翁鸣姚玉元张须臻束永健
Owner ZHEJIANG SCI-TECH UNIV
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