Cotton stalk peel fiber cleaning and deguming method

A degumming method and cotton stalk skin technology are applied in the field of degumming, which can solve problems such as large environmental pollution, and achieve the effects of avoiding environmental pollution, good quality, and white and soft fibers.

Inactive Publication Date: 2007-08-01
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although they have made a positive step in using cotton stalks as textile materia

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Rinse the cotton stalk skin three times with tap water, and then dry it.

[0023] (2) Pack the dried cotton stalk fiber into 1m 3 In the flash explosion tank, feed saturated water vapor to make the pressure reach 1Mpa, maintain the pressure for 10 minutes, release the pressure instantly, then wash it twice with hot water at 70°C containing 3% sodium hydroxide, and finally wash it with water to obtain the flash explosion tank. Explosion rod skin fiber;

[0024] (3) Put the cotton stalk skin fiber after flash explosion cleaning into a high-temperature tank, then cook at high temperature and high pressure, and the formula mass percentage of high temperature and high pressure degumming is: sodium hydroxide is 1%, sodium sulfide 3%, anthraquinone 0.02 %, sodium silicate 2%, sodium tripolyphosphate 2%, the bath ratio is 1:3, heated to 170°C, the pressure is 0.9Mpa, keep warm for 20 minutes, then take out and wash with water;

[0025] (4) After the cotton stalk sheath fi...

Embodiment 2

[0028] (1) Rinse the cotton stalk skin three times with tap water, and then dry it.

[0029] (2) Pack the dried cotton stalk fiber into 1m 3 In the flash explosion tank, feed saturated water vapor to make the pressure reach 2Mpa, maintain the pressure for 5 minutes, release the pressure instantly, then wash twice with 50°C hot water containing 2% sodium hydroxide, and finally wash it with water to obtain the flash explosion tank. Explosion rod skin fiber;

[0030] (3) Put the cotton stalk sheath fiber after flash explosion cleaning into a high-temperature tank, then cook at high temperature and high pressure, and the formula mass percentage of high temperature and high pressure degumming is: sodium hydroxide is 3%, sodium sulfide 2%, anthraquinone 0.02 %, sodium silicate 1%, sodium tripolyphosphate 1%, the bath ratio is 1:4, heated to 160°C, the pressure is 0.8Mpa, keep warm for 30 minutes, then take out and wash with water;

[0031] (4) After the cotton stalk sheath fiber i...

Embodiment 3

[0034] (1) Rinse the cotton stalk skin three times with tap water, and then dry it.

[0035] (2) Pack the dried cotton stalk fiber into 1m 3 In the flash explosion tank, feed saturated water vapor to make the pressure reach 1.5Mpa, maintain the pressure for 7 minutes, release the pressure instantly, then wash it twice with hot water at 60°C containing 2.5% sodium hydroxide, and finally wash it with cold water. Obtain flash explosion cotton stalk fiber;

[0036] (3) Put the cotton stalk sheath fiber after flash explosion cleaning into a high-temperature tank, then cook at high temperature and high pressure, and the formula mass percentage of high temperature and high pressure degumming is: sodium hydroxide is 2%, sodium sulfide 4%, anthraquinone 0.02 %, sodium silicate 1.5%, sodium tripolyphosphate 1.5%, the bath ratio is 1:5, heated to 150°C, the pressure is 0.6Mpa, heat preservation for 40 minutes, then take out and wash with water;

[0037] (4) After the cotton stalk sheat...

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PUM

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Abstract

The invention discloses a method for cleaning and degumming cotton stalk bark fiber, combining flash explosion, high pressure and high pressure. The inventive method comprises that: washing cotton stalk bark in water, drying, flash explosion, washing in hot water, washing in water, degumming with high pressure and high temperature, washing in water, feeding oil to soften, removing oil, drying and ultra drying cotton stalk bark fiber. The invention first utilizes flash explosion technique to degrade part of semi-cellulose and lignin, utilizes high-temperature high-pressure technique to treat cotton stalk bark deeply in order to remove the lignin and semi-cellulose and obtain white soft cotton stalk bark fiber. Since the cotton stalk bark fiber is similar to prior estopa fiber, it has high lignin content and high strength; since the inventive method uses flash explosion and high-pressure high-temperature low-alkali technique, it can effectively remove lignin and reduce fiber strength to effectively degum, without pollution.

Description

technical field [0001] The invention relates to a degumming method, in particular to a process for cleaning and degumming cotton stalk fiber. Background technique [0002] Cotton stalk skin is a kind of good bast fiber, which is the main by-product fiber brought by planting cotton, accounting for about 30% to 35% of the whole cotton stalk, and its cellulose content is about 62.8%. my country is the second largest cotton-producing country in the world. One mu of cotton field produces 225-250 kg of cotton stalks, and the leather part accounts for 26%. Leather resources are extremely rich. Therefore, making full use of cotton stalk resources is of great significance to alleviate the serious shortage of cotton fibers in my country. But people often used cotton stalk fiber as pulping and papermaking material in the past, also applied for many patents about cotton stalk pulping and papermaking aspect simultaneously, as: CN1068866, CN1052484. [0003] With the increasing advocacy...

Claims

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Application Information

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IPC IPC(8): D01C1/02
Inventor 冯新星陈建勇郭玉海张华鹏俞春华
Owner ZHEJIANG SCI-TECH UNIV
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