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Moisture-absorbing heating cotton fiber as well as preparation method and application thereof

A technology of hygroscopic heating and cotton fiber, applied in the directions of plant fiber, fiber treatment, biochemical fiber treatment, etc., can solve the problems of reduced heating performance of fabrics, decreased hygroscopic heating performance, disordered arrangement of blended yarn fibers, etc., to achieve good hygroscopic heating performance , Guarantee the effect, improve the effect of bonding fastness

Pending Publication Date: 2022-06-28
江苏中纺联针织有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of this method is that the washability is poor, and as the number of washings increases, the heat generation performance of the fabric decreases significantly.
[0007] The disadvantages of this method are: (1) The existing moisture-absorbing and heating fibers are basically obtained by modifying chemical fibers, and the price is usually high, resulting in high production costs; (2) Although the hydrophilic groups are added through modification, However, the hygroscopicity of chemical fibers is still unsatisfactory. For this reason, they are usually blended with natural fibers (cotton fibers or wool fibers, etc.) It is difficult to form a continuous and regular path, resulting in significantly poor moisture conductivity and poor hand feeling
[0009] The deficiency of this document is that: the treatment method by dipping in the moisture-absorbing and exothermic aqueous solution is similar to the aforementioned exothermic finishing, therefore, there is still the problem of poor washability. Performance will drop significantly

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）

[0034] The preparation method of the hygroscopic heating cotton fiber of the present embodiment specifically includes the following steps:

[0035] ① First, p-toluic acid and a catalytic amount of 732-type cation exchange resin were added to the reactor, the temperature was raised to 35±5°C, and 5% polyvinyl alcohol aqueous solution was added to carry out esterification; among them, p-toluic acid and The proportion of polyvinyl alcohol is equimolar of carboxyl group in p-toluic acid and hydroxyl group in polyvinyl alcohol.

[0036] During the reaction, p-toluic acid and 5% polyvinyl alcohol aqueous solution were supplemented according to the above-mentioned proportions every 10 min.

[0037] After 40min of reaction, filter, the filtrate is left to stand for stratification, and the water layer is separated to obtain an ester polymer compound, and its repeating unit structure is as follows:

[0038] .

[0039] ②Add the ester polymer compound and ethanol obtained in step 1 in...

Embodiment 2）

[0044] The difference between Example 2 and Example 1 is that step (2) adopts loose cotton that has undergone slight mercerization.

[0045] The concentration of caustic soda used in the slight mercerizing treatment is 120 g / L, the temperature is 20 °C, and the time is 23 s.

Embodiment 3）

[0049] The difference between Example 3 and Example 1 is that it also includes step 3.: soak the hygroscopic heating cotton fiber obtained in step 2. in the silver nitrate solution of 10g / L for 5min, then take out the dehydration, and then soak in the ethyl acetate of 20g / L. Aldehyde solution for 5 minutes, then taken out for dehydration, and finally placed in a 65°C oven for 5 minutes to obtain hygroscopic and exothermic antibacterial cotton fibers.

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Abstract

The invention discloses a moisture-absorbing and heat-generating cotton fiber and a preparation method and application thereof, and the preparation method of the moisture-absorbing and heat-generating cotton fiber comprises the following steps: (1) carrying out esterification reaction on an aromatic acid compound and an alcohol high-molecular compound in the presence of an esterification catalyst to obtain an ester high-molecular compound; the aromatic acid compound is alkyl-substituted benzoic acid; the esterification catalyst is cation exchange resin; (2) carrying out addition reaction on the cotton fiber and the ester high-molecular compound obtained in the step (1) in the presence of an addition catalyst to obtain the moisture-absorbing and heat-generating cotton fiber; the addition catalyst is dry hydrogen chloride gas. According to the invention, the cotton fiber is modified, so that hydroxyl on cellulose reacts with carbonyl on an ester high-molecular compound to form a stable net-shaped structure, and the binding strength of the cellulose and the high-molecular compound is greatly improved, so that the cotton fiber is endowed with relatively good moisture-absorbing and heat-generating performance.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a moisture-absorbing and exothermic cotton fiber and a preparation method and application thereof. Background technique [0002] With the improvement of people's living standards, the functions of clothing are also developing towards diversification. In recent years, moisture-absorbing and heating fabrics have become more and more popular. [0003] The existing moisture absorbing and heating fabrics mainly have the following two preparation methods: [0004] (1) Finishing the common fabric after heating. [0005] The disadvantage of this method is that the washing resistance is poor, and with the increase of washing times, the heat generation performance of the fabric is obviously reduced. [0006] (2) Use hygroscopic heating fibers (such as EKS fibers, softwarm fibers, Porel fibers, Yirebao fibers, etc.) to make hygroscopic heating yarns, and then make hygroscopic...

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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IPC IPC(8): D06M15/333D06M11/83D02G3/02D06M101/06
CPCD06M15/333D06M11/83D06M16/00D02G3/02D10B2201/02D06M2101/06
Inventor 王江波陈志华吴敏沈萍局海滨
Owner 江苏中纺联针织有限公司
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