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A method for preparing ultra-high-density knitted fabrics

A knitted fabric and ultra-high-density technology, applied in the field of fabrics, can solve the problems of reduced physical and chemical adsorption performance, failure to meet the technical indicators of polyester-nylon ultra-high-density knitted fabrics, etc.

Active Publication Date: 2020-12-11
NINGBO SANDO KNITTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been proved that it is not the so-called "ultra-high density fabric" technology, especially the two components of the fiber inside the fabric are not highly separated, and there is almost no effect of crimping and high density, and the physical and chemical adsorption performance is also greatly reduced. Jin ultra-high density knitted fabric technical indicators

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
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing ultra-high-density knitted fabrics, comprising the following steps:

[0019] (1) Oxidation and swelling and dissolution treatment: Take 30 parts of polyester-cotton fabrics and add them to the high-temperature and high-pressure overflow dyeing machine, first add 1 part of 1mol / L hydrochloric acid, 4 parts of 20% hydrogen peroxide, heat to 80 ° C for 20 minutes of oxidation treatment, and then Add a large amount of alcohol solvent to wash until neutral; then add 5 parts of dimethyl sulfoxide, 2 parts of hexamethylphosphoramide, 4 parts of 2,4-dihydroxypyridine, 1 part of 4-hydroxymethylphenylboronic acid, Then add Gemini-type perfluorinated cationic surfactant, and slowly raise the temperature to 105°C, keep it warm for 20 minutes to allow the cloth to fully swell and dissolve to obtain a swelling solution.

[0020] (2) Cross-linking treatment: Add 0.2 parts of γ-triethylenetetraaminepropylmethyldimethoxysilane to the swelling solution, gradually r...

Embodiment 2

[0024] A method for preparing ultra-high-density knitted fabrics, comprising the following steps:

[0025] (1) Oxidation and swelling and dissolution treatment: Take 40 parts of polyester-cotton fabrics and add them to the high-temperature and high-pressure overflow dyeing machine, first add 1.5 parts of 4mol / L oxalic acid, 3 parts of 30% hydrogen peroxide, heat to 50 ° C for 50 minutes, and then Add a large amount of alcohol solvent to wash until neutral; then add 10 parts of dimethyl sulfoxide, 1 part of hexamethylphosphoramide, 6 parts of 2,4-dihydroxypyridine, and 1 part of 4-hydroxymethylphenylboronic acid, Then add Gemini-type perfluorinated cationic surfactant, and slowly raise the temperature to 100°C, keep it warm for 50 minutes to allow the cloth to fully swell and dissolve to obtain a swelling solution.

[0026] (2) Cross-linking treatment: add 0.5 parts of triethanolamine to the swelling solution, gradually raise the temperature to 105°C after the addition, keep th...

Embodiment 3

[0030] A method for preparing ultra-high-density knitted fabrics, comprising the following steps:

[0031] (1) Oxidation and swelling and dissolution treatment: Take 33 parts of polyester-cotton fabrics and add them to the high-temperature and high-pressure overflow dyeing machine, first add 2 parts of 6mol / L acetic acid, 3 parts of 25% hydrogen peroxide, heat to 56 ° C for 40 minutes of oxidation treatment, and then Add a large amount of alcohol solvent to wash until neutral; then add 8 parts of dimethyl sulfoxide, 1.4 parts of hexamethylphosphoramide, 4.5 parts of 2,4-dihydroxypyridine, 0.6 parts of 4-hydroxymethylphenylboronic acid, Then add Gemini-type perfluorinated cationic surfactant, and slowly raise the temperature to 102°C, keep it warm for 40 minutes to allow the cloth to fully swell and dissolve, and obtain a swelling solution.

[0032] (2) Cross-linking treatment: add 0.1 part of triethylamine to the swelling solution, gradually raise the temperature to 110°C afte...

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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PUM

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Abstract

The invention relates to a method for preparing a super-high-density knitted fabric. The high-density knitted fabric is prepared by adopting a method for swelling and dissociating a high molecular material; the method comprises the following steps: firstly, washing a polyester-cotton fabric with hydrogen peroxide with an acidic condition; then carrying out swelling and dissolving treatment by adopting a dipolar solvent; finally, adding a crosslinking agent to realize more tight arrangement. The preparation method is matched with a high-temperature and high-pressure printing and dyeing treatment technology and other performance indexes of the fabric are improved. The preferable formula composition of each substance is as follows: 30 to 40 parts of the polyester-cotton fabric, 1 to 2 parts of acid, 2 to 4 parts of the hydrogen peroxide, 5 to 10 parts of dimethyl sulfoxide, 1 to 2 parts of hexamethylphosphoramide, 4 to 6 parts of 2,4-dihydroxypyridine, 0.5 to 1 part of 4-hydroxymethyl phenylboronic acid, 0.2 to 0.4 part of Gemini type perfluoro-cationic surfactant and 0.1 to 0.5 part of a crosslinking agent.

Description

technical field [0001] The invention relates to a fabric, in particular to a method for preparing an ultra-high-density knitted fabric. Background technique [0002] At present, there are many kinds of microfiber high-density fabrics on the market. From the perspective of fabric form, they include woven and knitted fabrics. Although woven fabrics are good in stiffness, they are not elastic enough and the wearing comfort is affected; while knitted fabrics Although it has good elasticity, it is too soft and lacks firmness. It needs to be improved by adding stiff resin processing during finishing processing, and its durability is not good. [0003] Many domestic scientific research institutes have done a lot of research on the manufacture of polyester nylon ultra-high-density knitted fabrics, all of which use alkali weight reduction method, weak acid fiber opening method, fiber shrinkage splitting method, etc. All to the exploration technical method of ultra-high density fabri...

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 Patents(China)
IPC IPC(8): D06M11/50D06M13/268D06M13/44D06M13/355D06M13/51D06M13/325D06M13/368D06B1/00D06M101/32D06M101/06
CPCD06B1/00D06M11/50D06M13/268D06M13/325D06M13/355D06M13/368D06M13/44D06M13/51D06M2101/06D06M2101/32
Inventor 程丹彤
Owner NINGBO SANDO KNITTING