Extraction and preparation method for the ramie hemp

A ramie fiber and time technology, which is applied in the field of extraction and preparation of ramie fiber products, can solve the problems of roughness, high orientation and low public count of hemp fibers, and achieves the effect of improving fiber bulkiness and curling.

Inactive Publication Date: 2011-04-20
徐梅荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the method for extracting and preparing hemp fiber in the present technology also has the following problems: for example, the hemp fiber is rough, and the common count is relatively low, and high-count high-quality hemp yarn cannot be obtained, and the dyeing performance of the hemp fiber is poor; for example, fiber degumming The technology is not perfect, the fiber's own structure has high crystallinity and high degree of orientation
During the preparation of hemp fiber, the waste of water is large, and the environmental pollution is large, etc.
When extracting and preparing hemp fiber, the processing process is unreasonable, the damage to the fiber is large, and the production rate of the fiber is low, resulting in low economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: a kind of extraction of ramie fiber and preparation method

[0043] Using two boiling and two bleaching high-temperature splitting methods, the ramie raw materials are prepared first, and then the corresponding ramie fibers are extracted and prepared with these raw materials. The whole process includes two steps of bleaching, two alkali boilings, and high-temperature splitting. The secondary bleaching is chlorine bleaching and oxygen bleaching respectively. Chlorine bleaching uses sodium hypochlorite with a concentration of 6g / L at a temperature of 40°C for 60 minutes, and oxygen bleaching uses hydrogen peroxide 5g / L at a temperature of 92°C for 60 minutes; alkali boiling is carried out twice , for the first time with caustic soda for caustic boiling; high-temperature splitting is carried out after two boilings and two bleachings, and high-temperature splitting uses soda ash with a concentration of 120g / L at a temperature of 120°C for 2 hours.

Embodiment 2

[0044] Embodiment 2: a kind of extraction of ramie fiber and preparation method

[0045] Using two boiling and two bleaching high-temperature splitting methods, the ramie raw materials are prepared first, and then the corresponding ramie fibers are extracted and prepared with these raw materials. The whole process includes two steps of bleaching, two alkali boilings, and high-temperature splitting. The secondary bleaching is chlorine bleaching and oxygen bleaching respectively. Chlorine bleaching uses sodium hypochlorite with a concentration of 8g / L at a temperature of 35°C for 80 minutes. Oxygen bleaching uses hydrogen peroxide at 6g / L at a temperature of 85°C for 80 minutes; alkali boiling is carried out twice , for the first time with caustic soda for soda boiling; the high-temperature splitting is carried out after two boilings and two bleachings. During high-temperature splitting, soda ash with a concentration of 100g / L is used at a temperature of 140°C for 1.5 hours.

Embodiment 3

[0046] Embodiment 3: the extraction of ramie fiber and preparation method, and the preparation of corresponding pure hemp yarn, blended yarn

[0047] The ramie raw material was pickled, the sulfuric acid concentration was 5g / L, the temperature was 55°C, and the time was 90 minutes.

[0048] Pull out the ramie raw material and wash it with water.

[0049] The washed ramie raw material is subjected to alkali boiling for the first time, i.e. first boiling, and the first boiling adopts alkali boiling, the conditions are: caustic soda 90g / L, time 110 minutes, temperature 120°C.

[0050] The boiled ramie raw material is washed with water.

[0051] Raw material of bleached ramie. Chlorine bleaching is used for bleaching, using sodium hypochlorite with a concentration of 5g / L, at a temperature of 40°C, and for 60 minutes.

[0052] Pickling is performed to remove chloride ions left over from chlorine bleach.

[0053] The ramie raw material after pickling is subjected to alkali boil...

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PUM

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Abstract

The invention relates to a high-count ramie fabric of high quality, which can reach to 2500-4500 metric count, even above 4500 metric count, and technique for extration and preparation of ramie fabric, abbreviated as twice-boiling and twice-bleaching high-temperature splicing method. The features of the method are that during the extration and preparation of ramie fabric, the steps are twice boiling, twice bleaching and high-temperature splicing. The twice bleaching are chlorine bleaching and oxygen bleaching. The chlorine bleaching uses 3-8g / L of sodium hypochlorite for 40-80 minutes, at the use temperature of 35-45 DEG C. The oxygen bleaching uses 4-6g / L of hydrogen peroxide for 40-80 minutes, at the use temperature of 80-100 DEG C. Soda boiling performs twice. The high-temperature splicing performs after twice boiling and twice bleaching, and uses 100-140g / L of soda for 1.5-2.5 hours, at the use temperature of 100-140 DEG C. The invention also relates to pure ramie yarn, commingled yarn and blended yarn made of the ramie fabric.

Description

[0001] This application is a divisional application with an application date of November 1, 2005, an application number of 200510117221.8, and an invention title of "a method for extracting and preparing hemp fiber, hemp fiber obtained by the method and its use". technical field [0002] The invention relates to a high-quality ramie fiber product, the application of the ramie fiber product, and an extraction and preparation method of the ramie fiber product. Background technique [0003] my country is one of the countries with the most abundant hemp resources in the world. Not only is my country rich in hemp resources, but also the production capacity and textile products of the hemp textile industry have a certain degree of competitiveness in the world. At present, my country's hemp textiles mainly include: ramie Textiles, linen textiles, hemp textiles, apocynum textiles, jute textiles, sisal textiles, etc. [0004] In the new markets of textiles such as fitness, safety, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/02D02G3/02D02G3/04
Inventor 徐梅荣
Owner 徐梅荣
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