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Preparation of special filament for antistatic polyester sewing thread

A polyester filament and antistatic technology is applied in the field of preparation of special filaments for antistatic polyester sewing thread, and can solve the problems of high production cost, high energy consumption and high end breakage rate.

Pending Publication Date: 2021-04-20
HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process is long, the energy consumption is high, and the end-stop rate is high in the production process, resulting in high production costs.
[0005] After reviewing the relevant literature, there is no relevant report on the use of conventional viscosity slices to prepare special filaments for antistatic fine-denier polyester sewing threads with breaking strength ≥ 7.0g / D, boiling water shrinkage ≤ 4.0%, and elongation ≤ 18%.

Method used

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  • Preparation of special filament for antistatic polyester sewing thread
  • Preparation of special filament for antistatic polyester sewing thread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The wet slice PET is removed by a vibrating screen to remove powder and large particles, and is transported to the pre-crystallizer by a pulse device, and stays in the pre-crystallizer for 12-15 minutes at a drying temperature of 180°C, and stays in the main drying tower for 6 hours at a drying temperature of 172°C. After the slices are dried, the moisture content is ≤20ppm; then they are distributed to each dry slice storage tank for later use.

[0028] Select A color masterbatch and dry ultra-bright PET slices to be fed into the single-screw extruder at the same time for melt extrusion. The characteristics of A color masterbatch are: the content of polyether ester composite antistatic agent containing carbon nanotubes is 65.9%, of which carbon nanotubes account for 10% of the mass fraction of the composite antistatic agent, polybutylene terephthalate content is 30%, heat stabilizer 0.5%, antioxidant 0.5%, dispersant 3.0%, even Joint agent 0.1%; the addition ratio of c...

Embodiment 2

[0034] According to the specific implementation mode, the selected color masterbatch, draft control parameters and spinning specifications are as follows:

[0035] 1. Select masterbatch A;

[0036] 2. Spinning specification 75D / 24f;

[0037] 3. The speed of the first hot roller is 553m / s, the temperature is 110°C, and it is wound 8 times;

[0038] 4. The speed of the second hot roller is 2320m / s, the temperature is 120°C, and it is wound 5 times;

[0039] 5. The speed of the third hot roller is 3273m / s, the temperature is 240°C, and it is wound 8 times;

[0040] 6. The winding speed is 3230m / s.

[0041] The physical properties of the prepared fibers are listed in Table 1.

Embodiment 3

[0043] According to the specific implementation mode, the selected color masterbatch, draft control parameters and spinning specifications are as follows:

[0044] 1. Select masterbatch A;

[0045] 2. Spinning specification 100D / 36f;

[0046] 3. The speed of the first hot roller is 553m / s, the temperature is 110°C, and it is wound 8 times;

[0047] 4. The speed of the second hot roller is 2320m / s, the temperature is 120°C, and it is wound 5 times;

[0048] 5. The speed of the third hot roller is 3273m / s, the temperature is 240°C, and it is wound 8 times;

[0049] 6. The winding speed is 3230m / s.

[0050] The physical properties of the prepared fibers are listed in Table 1.

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Abstract

A special filament for an antistatic polyester sewing thread is prepared by adopting common viscosity polyester (PET) slices and optimizing an antistatic color master batch formula. According to the special polyester filament, a spinning process and complete equipment corresponding to the spinning process are developed, a method of low-speed spinning, two-stage high-power drawing and tensioning heat setting is selected, and the process conditions such as drawing temperature and speed, drawing multiple, distribution relation of the drawing multiple, setting temperature and the like are well controlled. The high-grade antistatic fine-denier medium-strength and high-strength polyester special filament with the fineness smaller than 300D is prepared, wherein the strength is larger than or equal to 7.0 g / D, the boiling water shrinkage is smaller than or equal to 4.0%, and the elongation at break is smaller than or equal to 18%.

Description

technical field [0001] The invention belongs to the field of chemical fibers, in particular to a method for preparing special filaments for antistatic polyester sewing threads. Background technique [0002] Polyester has a series of excellent properties and is widely used in clothing, industrial use, and decorations. However, polyester fabric is easy to generate static electricity, so it brings certain problems to its processing and product performance. Compared with cotton and real silk, it has certain defects, and its industrial development is affected to a certain extent. The main factors affecting the electrostatic properties of fibers are: fiber structure, relative humidity, temperature and friction conditions. [0003] Antistatic methods mainly include: controlling the generation of static electricity and eliminating static electricity. Among them, the method of controlling static electricity is mainly to reduce the generation of static electricity, which is a relativ...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/62D01F1/09D01D5/16D01D5/08D01D1/00
Inventor 袁欢欢黄彬朱辉煌阳区李著初
Owner HUNAN AEROSPACE SANFENG SCI & TECH CO LTD