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Preparation method of cotton stalk bark fibers

A cotton stalk skin and fiber technology, which is applied in the field of cotton stalk skin fiber preparation, can solve the problems of complex process, high alkali consumption, and long time, and achieve the effects of high degumming rate, high fiber performance and small fiber damage

Active Publication Date: 2014-09-17
重庆新锐科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also many people who have taken a positive step in using cotton stalks as textile materials, but the methods they use have the disadvantages of taking too long and using too much alkali. For example, in the patent ZL94113220.X, the processing time takes about a week. The processing time in patents 200510034201.4 and 200610036594.7 also needs about 3-4 days, which brings many unfavorable factors to the application of cotton stalk fiber in weaving.
Although the processing time of patents 200710066829.1 and 200710066830.4 is relatively reduced, the methods they use still have disadvantages such as complicated procedures and high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Remove impurities from the cotton stalks, bind them, put them in a cage, and then soak them in a sulfuric acid solution with a bath ratio of 1:10, where the concentration of sulfuric acid is 5g / L. Treat them at room temperature for 20 minutes, and then increase the temperature by 1°C per minute. Heat at a rate of 40°C for 10 minutes, then heat to 60°C at a rate of 1°C per minute, and then treat for 10 minutes; after completion, wash with water until neutral and perform ultrasonic treatment for 15 minutes, then soak the cotton stalks in sulfuric acid solution, bath The ratio is 1:10, the concentration of sulfuric acid is 3-5g / L, and the heating rate is 1°C per minute to 40°C for 20 minutes. Then carry out scouring, the concentration of hydrogen peroxide is 30% hydrogen peroxide 35g / L, sodium borohydride 3g / L, EDTA 3g / L, sodium pyrophosphate 1g / L, ethylene glycol monobutyl ether 2 g / L, at 1°C per minute The heating rate is increased to a temperature of 95-100 ° C, and the...

Embodiment 2

[0032] The cotton stalks are removed, tied, and caged, and then soaked in a sulfuric acid solution with a bath ratio of 1:15, where the concentration of sulfuric acid is 3g / L, treated at room temperature for 20 minutes, and then Heat up to 40°C at a heating rate of 1°C for 10 minutes, then heat to 60°C at a heating rate of 1°C per minute, and then treat for 10 minutes; after completion, wash with water until neutral and perform ultrasonic treatment for 10 minutes, then soak the cotton stalks in sulfuric acid In the solution, the bath ratio is 1:15, the concentration of sulfuric acid is 3g / L, and the temperature is raised to 40°C for 20min at a heating rate of 1°C per minute. Then carry out scouring, the hydrogen peroxide concentration is 30% hydrogen peroxide 30g / L, sodium borohydride 2g / L, EDTA 2g / L, sodium pyrophosphate 1g / L, ethylene glycol monobutyl ether 1 g / L, at 1°C per minute The heating rate was increased to a temperature of 95°C, and the treatment time was 60 minutes...

Embodiment 3

[0035]The cotton stalks are removed, tied, and caged, and then soaked in a sulfuric acid solution with a bath ratio of 1:15, where the concentration of sulfuric acid is 5g / L, treated at room temperature for 20 minutes, and then Heat up to 40°C at a heating rate of 1°C for 10 minutes, then heat to 60°C at a heating rate of 1°C per minute, and then treat for 10 minutes; after completion, wash with water until neutral and perform ultrasonic treatment for 15 minutes, then soak the cotton stalk skin in sulfuric acid In the solution, the bath ratio is 1:15, the concentration of sulfuric acid is 5g / L, and it is heated to 40°C for 20min at a heating rate of 1°C per minute. Then carry out scouring, the hydrogen peroxide concentration is 30% hydrogen peroxide 40g / L, sodium borohydride 2g / L, EDTA 3g / L, sodium pyrophosphate 2g / L, ethylene glycol monobutyl ether 2 g / L, at 1°C per minute The heating rate is heated to a temperature of 100°C, and the treatment time is 45min. Further, the sup...

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PUM

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Abstract

The invention relates to a preparation method of cotton stalk bark fibers. The method comprises the following steps: removing impurities, bundling, caging, conducting chemical pretreatment, conducting supercritical carbon dioxide fluid degumming treatment, washing, dewatering, feeding oil, combing, and drying, wherein the chemical pretreatment method comprises acid soaking-ultrasonic treatment, and boiling off. The obtained fibers are high in degumming efficiency, low in fiber damage, and high in fiber performance, thus meeting the modern and environment-friendly requirement.

Description

[0001] technical field [0002] The invention relates to a method for preparing natural fibers, in particular to a method for preparing cotton stalk sheath fibers. Background technique [0003] Cotton is an important economic crop in my country, and the planting area is relatively extensive. At present, cotton only uses its seed fiber as a natural raw material for textiles, and cotton stalk bark is a good bast fiber, which is the main fiber brought by planting cotton. The by-product fiber accounts for about 30-35% of the total cotton stalk. With the increasing demand for natural fibers and the shortage of natural resources, cotton stalks, as the main part of cotton, are burned or discarded. Not only has the amount of rice been fully utilized, but it has caused environmental pollution. Therefore, making full use of cotton stalk resources is of great significance to alleviate the serious shortage of cotton fibers in my country. But in the past, people often used cotton stalk ...

Claims

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Application Information

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IPC IPC(8): D01C1/02
CPCD01C1/02
Inventor 耿云花
Owner 重庆新锐科技服务有限公司
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