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Special polyester filaments for black fine denier industry, and preparation method of special polyester filament

An industrial, black technology, applied in rayon manufacturing, filament forming treatment, single-component polyester rayon, etc., can solve the problems of high breakage rate, long process flow, uneven distribution, etc., and achieve economical The effect of production cost, avoidance of environmental pollution and short process flow

Inactive Publication Date: 2016-06-08
NANTONG HUALUN CHEM FIBER
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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.
[0004] At present, few manufacturers use the method of adding color masterbatch to prepare black medium and high-strength polyester filaments. The reason is that inorganic carbon black particles are non-melting, and they are unevenly distributed in the fiber during high-strength drafting, which is easy to form agglomeration. With the increase of drafting ratio, the rate of end breakage increases more significantly, so that the black high-strength silk is still prepared by dyeing

Method used

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  • Special polyester filaments for black fine denier industry, and preparation method of special polyester filament
  • Special polyester filaments for black fine denier industry, and preparation method of special polyester filament
  • Special polyester filaments for black fine denier industry, and preparation method of special polyester filament

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Experimental program
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Effect test

Embodiment 1

[0019] The invention provides a kind of black fine denier industrial polyester special filament, comprising: super glossy polyester and black color masterbatch, wherein the mass fraction of the black color masterbatch in the super glossy polyester is 3-4 %, the black color masterbatch includes the following materials: 30-50% polyethylene terephthalate, 30-50% polybutylene terephthalate, 10-30% carbon Black and 0.4-12% of auxiliary additives.

[0020] Optionally, the auxiliary additives include: 0.1-3% heat stabilizer, 0.1-3% antioxidant, 0.1-5% dispersant, and 0.1-1% coupling agent.

[0021] Optionally, the heat stabilizer is one or more of the following: stearates, organotin mercaptans, and dibutyltin laurate.

[0022] Optionally, the antioxidant is one or more of the following: 1010, 1330, 168, MARK5118A.

[0023] Optionally, the dispersant is one or more of the following: polyethylene wax, CH series; the coupling agent is titanate.

[0024] In the present invention, by a...

Embodiment 2

[0026] like figure 1 As shown, the present invention also provides a method for preparing black fine denier industrial polyester special filament, comprising steps:

[0027] S101: drying the super-bright polyester chips and the black masterbatch, so as to increase the viscosity and homogenize the viscosity of the super-bright polyester chips;

[0028] S102: mixing the super-bright polyester chips and the black masterbatch through a screw extruder for melt extrusion;

[0029] S103: Filter the extruded melt through a filter to remove impurities in the melt, and then mix it uniformly with a static mixer;

[0030] S104: The mixed melt is spun through the spinning box, and then the filament is cooled and oiled by the oil tanker. The oiled filament passes through the guide rod to increase the spinning tension, and then passes through the pre-netting device. oil homogenization;

[0031] S105: The filament after the pre-netting device enters the drafting device for drafting and hea...

Embodiment 3

[0039]Wet polyester chips are removed by vibrating sieves to remove powder and large particles, and then transported to the fluidized bed pre-crystallizer by a pulse device, staying in the pre-crystallizer for 15-20min, drying temperature 185°C, staying in the main drying tower for 6h, drying temperature 168°C, so that the moisture content of the slices after drying is ≤20ppm; and then distributed to each dry slice storage tank for later use.

[0040] It chooses A color masterbatch and dry super-bright polyester chips to be fed into a single-screw extruder at the same time for melt extrusion, wherein the characteristics of A color masterbatch are: the high-viscosity polyester chips (1.05- 1.15dL / g) content is 36.50%, polybutylene terephthalate content is 36.1%, carbon black content is 23%, heat stabilizer 0.15%, antioxidant 0.15%, dispersant 4.0%, coupling agent 0.1%; the addition ratio of color masterbatch and super bright polyester chips is 100:3.5.

[0041] Select A color ...

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Abstract

The invention provides special polyester filaments for black fine denier industry, and a preparation method of the special polyester filaments. The special polyester filaments for the black fine denier industry comprise super bright polyester and black color masterbatch, wherein the black color masterbatch is prepared from the following materials by ratio: 30-50% of polyethylene glycol terephthalate, 30-50% of polybutylene terephthalate, 10-30% of carbon black and 0.4-12% of auxiliary additive. The preparation method of the special polyester filaments adopts a polyester chip with common viscosity and utilizes a melt spinning method, so that production cost is greatly saved from the raw material cost, a technological process is shorter, the energy consumption is low, end breakage rate is lower in the production process, and the produced filaments can meet the requirements of medium and high-strength sewing threads; furthermore, black fully drawn yarn (FDY) polyester filament sewing threads are prepared by directly adding the carbon black instead of firstly spinning and then dyeing, so that the phenomena such as environmental pollution, rinsing decoloration, light fugitive property, unstable chemical properties and the like which are caused by black dye dyeing are avoided.

Description

technical field [0001] The invention relates to the field of chemical fibers, in particular to a black fine denier industrial polyester special filament and a preparation method thereof. Background technique [0002] Polyester sewing thread includes polyester filament sewing thread and polyester short thread sewing thread, and polyester filament sewing thread has the advantages of high strength, soft thread quality, no mildew, good seamability, stable physical and chemical properties and no joints, etc., and is widely used Used in high-end clothing, bags, shoes and hats, military supplies and other fields. [0003] The technology of polyester filament for sewing thread at home and abroad mainly includes spinning and pulling one-step method (FDY method (FULLDRAWYARN)), UDY-DT two-step method and POY-DT (PARTIALLYORIENTEDYARN) two-step method. The FDY method uses high-viscosity polyester chips, and a slow cooling device needs to be added to the spinning process, and the manuf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/04D01F1/10D01D1/00D01D5/08D01D5/16D01D7/00
CPCD01F6/92D01D1/00D01D5/08D01D5/16D01D7/00D01F1/04D01F1/10
Inventor 袁欢欢提云崇顾昕顾玲徐国华林桂芳吉红兵
Owner NANTONG HUALUN CHEM FIBER
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