Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of easy-to-dye bio-based polyester-nylon composite fiber

A polyester-nylon composite fiber, bio-based technology, applied in the direction of fiber chemical characteristics, rayon manufacturing, conjugated synthetic polymer rayon, etc., can solve the problems of different, difficult, changing drawing performance, etc., to achieve good absorption and easy Dyeing, good hygroscopic effect

Pending Publication Date: 2022-03-15
ZHEJIANG HAONENG TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current production process of polyester-nylon composite fiber is simply twisted polyester fiber and nylon fiber. This simple twisted composite fiber brings certain difficulties to post-processing due to the different fiber properties, such as uniform dyeing. problems, etc., but if encapsulation is used, then in the production of functional polyester-nylon composite superfine fibers, the addition of functional materials will change the drawing performance of these fiber materials, which will bring certain benefits to the realization of encapsulation. difficulty

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of easy-to-dye bio-based polyester-nylon composite fiber
  • Preparation method of easy-to-dye bio-based polyester-nylon composite fiber
  • Preparation method of easy-to-dye bio-based polyester-nylon composite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see Figure 1-3 A kind of preparation method of easily dyeable bio-based polyester nylon composite fiber, it comprises the following steps:

[0037] S1, adding polyester chips, dimethyl isophthalate, glutaric acid and polytrimethylene terephthalate to a screw extruder after mixing according to a suitable proportion to carry out melt extrusion to obtain melt A;

[0038] S2, adding nylon chips, nano-silicon dioxide and polytrimethylene terephthalate to the screw extruder after mixing according to a suitable proportion to carry out melt extrusion to obtain melt B;

[0039] S3, delivering melt A and melt B to the spinning box for mixing, and after mixing for a period of time, adding a blending piece to continue mixing to obtain a mixed melt;

[0040] S4. The mixed melt is sprayed out into the filament through the spinning hole, and then the filament is placed in hot water for a period of time after cooling. After a gap is formed on the surface or inside of the filament, ta...

Embodiment 2

[0046] see Figure 4-6 , the blending part includes a doping wire 3 and a plurality of doping balls 1 arranged at intervals on the doping wire 3, and the doping ball 1 and the doping wire 3 are both made of modified polyvinyl alcohol as the main material production.

[0047] After the filament is placed in hot water, the doped rope 3 and the doped ball 1 are dissolved, and the surface and interior of the filament form a connected wire hole 4 and a second ball hole 5, and the connection between the wire hole 4 and the second ball hole 5 is formed. The inter-connection makes the moisture absorption, moisture removal and air permeability channels in the composite fiber connected to each other, and the moisture absorption, moisture removal and air permeability are better, and the dyeability is better at the same time.

[0048] The filaments ejected from the spinning holes include at least one doped cord 3, and the number of doped cords 3 can achieve the effects of moisture absorp...

Embodiment 3

[0050] The blended part includes a plurality of doped cords 3, the doped cords 3 are made of modified polyvinyl alcohol as the main material, the doped cords 3 are discretely distributed in the filament, and only the doped cords 3 and the melt are doped. Compared with adding the doping ball 1, the mixed melt of A and B can be mixed with the mixed melt better because the cross-sectional area of ​​the doping wire 3 is smaller.

[0051]After the filament is placed in hot water, the doped cord 3 is dissolved, and elongated strip-shaped holes are formed on the surface and inside of the filament.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a dyeable bio-based polyester-nylon composite fiber, and belongs to the field of fiber preparation. The preparation method of the easy-to-dye bio-based polyester-nylon composite fiber comprises the following steps: S1, mixing polyester chips, dimethyl isophthalate, glutaric acid and polytrimethylene terephthalate according to a proper proportion, and then adding the mixture into a screw extruder for melt extrusion to obtain a melt A; s2, polyamide chips, nano silicon dioxide and polytrimethylene terephthalate are mixed according to a proper proportion and then added into a screw extruder to be subjected to melt extrusion, and a melt B is obtained; s3, the melt A and the melt B are conveyed into a spinning manifold to be mixed, after mixing is conducted for a period of time, a blending piece is added for continuous mixing, and a mixed melt is obtained; s4, the mixed melt is sprayed out through spinning holes to form filaments, the filaments are placed in hot water for a period of time after being cooled, the filaments are taken out and aired after gaps are formed in the surfaces or the interiors of the filaments, and the easily-dyed bio-based polyester-nylon composite fibers are obtained.

Description

technical field [0001] The invention relates to the field of fiber preparation, and more particularly, to a preparation method of an easily dyeable bio-based polyester-nylon composite fiber. Background technique [0002] With the improvement of people's living standards, the requirements for textiles are getting higher and higher. At present, the nylon fibers on the market are short, and there are problems such as rough hand, poor flexibility, poor air permeability, poor water absorption, and easy pilling. Subsequently, ultra-fine denier nylon fibers began to appear on the market, which are soft to the touch and comfortable to wear, but the quality of ultra-fine denier nylon fibers on the market is not high, the fibers are easy to break, not easy to dye, low grade, high defective rate, and poor economic benefits . On the other hand, polyester is a relatively simple synthetic fiber, which has the characteristics of strong durability, good elasticity, not easy to deform, easy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/12D01F1/10
CPCD01F8/14D01F8/12D01F1/10
Inventor 戚栋明李家炜严小飞卢宏庆孙娟蒋力明
Owner ZHEJIANG HAONENG TECH CO LTD