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Cotton fabric softening treatment method and application of phosphoric acid aqueous solution

A phosphoric acid aqueous solution, softening technology, applied in fiber processing, plant fibers, textiles and papermaking, etc., can solve problems such as danger

Pending Publication Date: 2021-03-26
LUOLAI LIFESTYLE TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although liquid ammonia pretreatment can improve the softness of cotton fabrics, due to the low boiling point of liquid ammonia (-33.4°C), it needs to be carried out under ultra-low temperature conditions, and there is a certain risk

Method used

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  • Cotton fabric softening treatment method and application of phosphoric acid aqueous solution
  • Cotton fabric softening treatment method and application of phosphoric acid aqueous solution
  • Cotton fabric softening treatment method and application of phosphoric acid aqueous solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method for cotton fabric softening treatment in the present embodiment, comprises the steps:

[0033] 1) Solution preparation: Add a commercially available phosphoric acid aqueous solution with a mass M of 85 wt% concentration into water, and stir while adding to make it evenly mixed to obtain a phosphoric acid aqueous solution with a concentration of 75 wt%. Volume of water required to prepare the solution: H 2 O(mL)=85M / 75-M;

[0034] 2) Immersion treatment: soak the cotton fabric in 75wt% phosphoric acid aqueous solution for 10 minutes after wetting; the fabric is completely immersed in the solution, and the fabric can be stirred several times during the immersion process to make it contact more fully, and the treatment temperature is 30°C; Wherein, the mass ratio of cotton fabric to 75wt% phosphoric acid aqueous solution is 1:50.

[0035] 3) Water washing: After the impregnation is completed, the fabric is taken out, soaked in water for 5 minutes, and then rin...

Embodiment 2

[0038] Cotton fabric softening pretreatment method in the present embodiment may further comprise the steps:

[0039] 1) Solution preparation: Add a commercially available phosphoric acid solution with a mass of M and a concentration of 85wt% into water, and stir while adding to make it evenly mixed to obtain a phosphoric acid solution with a concentration of 75wt%. Volume of water required to prepare the solution: H 2 O(mL)=85M / 75-M

[0040] 2) Immersion treatment: soak the cotton fabric in 75wt% phosphoric acid aqueous solution for 10 minutes after wetting; the fabric is completely immersed in the solution. Wherein, fabric: the mass ratio of solution is 1:50.

[0041] 3) Water washing: After the impregnation is completed, take out the fabric, soak it in water for 5 minutes, and then rinse until the surface of the fabric is neutral, which can be tested with pH test paper.

[0042] 4) Drying: Put the washed fabric into an oven for drying. The temperature is 80°C and the ti...

Embodiment 3

[0044] 1) Solution preparation: Add a commercially available phosphoric acid aqueous solution with a mass M of 85 wt% concentration into water, and stir while adding to make it evenly mixed to obtain a phosphoric acid aqueous solution with a concentration of 75 wt%. Volume of water required to prepare the solution: H 2 O(mL)=85M / 75-M

[0045] 2) Dipping treatment: soak the cotton fabric in 75wt% phosphoric acid aqueous solution for 15 minutes after wetting, the fabric is completely immersed in the solution, the fabric can be stirred several times during the dipping process to make it more fully contacted, and the treatment temperature is 30°C; Wherein, the mass ratio of cotton fabric to 75wt% phosphoric acid aqueous solution is 1:50.

[0046] 3) Water washing: After the impregnation is completed, the fabric is taken out, soaked in water for 5 minutes, and then rinsed until the surface of the fabric is neutral, which can be tested with pH test paper.

[0047] 4) Drying: Put t...

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Abstract

The invention provides a cotton fabric softening treatment method and application of a phosphoric acid aqueous solution. The cotton fabric softening treatment method comprises the following steps: 1)carrying out dipping treatment on cotton fabric by adopting the phosphoric acid aqueous solution with the concentration of 70-80wt%; 2) washing to be neutral; and 3) drying. The phosphoric acid aqueous solution with the proper concentration is adopted for treating the cotton fabric, the adopted phosphoric acid aqueous solution is non-toxic, harmless, low in cost and short in treatment process flow, but the softening treatment effect is almost the same as that of mercerizing pretreatment, the treated fiber structure is not damaged, the crystallinity of cotton fibers is slightly reduced, the amorphous area is increased, and the subsequent finishing and processing of the cotton fabric are facilitated.

Description

technical field [0001] The invention relates to the field of softening and finishing of fabrics, in particular to a method for softening and treating cotton fabrics. Background technique [0002] Due to the improvement of living standards, people pay more and more attention to the wearing comfort of textiles, and the fiber fabric can be given a soft touch through soft finishing to improve its wearing comfort. The main component of cotton fiber is cellulose. The molecular chains of cellulose are rigid, there are many hydrogen bonds between the molecular chains, and the degree of crystallinity is also high, which makes the resilience of the fibers poor, which is one of the factors affecting the softness of cotton fabrics. In addition, due to the pre-treatment of cotton fabrics such as scouring and bleaching, the grease and wax are removed, making it feel rough. Softness is an aspect of textile quality requirements. Softening methods can be divided into mechanical softening an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/70D06M101/06
CPCD06M11/70D06M2101/06D06M2200/50
Inventor 张辉钱海洪隋晓锋
Owner LUOLAI LIFESTYLE TECH CO LTD
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