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Method for enhancing property of ramie fiber through oxidative degumming

A technology of ramie fiber and oxidation degumming, which is applied in the field of improving fiber performance, to achieve the effects of good tensile performance, small dosage, and improved environmental protection

Active Publication Date: 2014-08-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of quinone compounds in the oxidative degumming of ramie has few reports in patents or literature

Method used

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  • Method for enhancing property of ramie fiber through oxidative degumming
  • Method for enhancing property of ramie fiber through oxidative degumming
  • Method for enhancing property of ramie fiber through oxidative degumming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The method of improving the tensile properties of ramie fiber in oxidation degumming is as follows:

[0023] 4 kg of hydrogen peroxide (concentration is 30%), 0.6 kg of sodium hydroxide, 0.2 kg of anthraquinone, 0.4 kg of HEDP, 0.6 kg of acetanilide, 0.8 kg of sodium tripolyphosphate and 193.6 kg of water to form an oxidation degumming solution. 20 kg of raw hemp is immersed in 200 kg of solution. Raise the temperature to 85°C and keep it warm for 1 hour. Then add 1.4 kg of sodium hydroxide to the degumming solution, raise the temperature to 100° C., and keep the temperature for 1.5 hours. Take out the hemp and wash it with clean water. Use 1 kg of sodium bisulfite to prepare a reducing solution, immerse the treated ramie in it, raise the temperature to 70°C, and keep it warm for 40 minutes. The degummed ramie is pickled, then dehydrated, oiled, deoiled and dried. The breaking strength, elongation at break, and work at break of the fiber were tested by a tensile str...

Embodiment 2

[0029] The method of improving the tensile properties of ramie fiber in oxidation degumming is as follows:

[0030] 4 kg of hydrogen peroxide (concentration is 30%), 0.6 kg of sodium hydroxide, 0.4 kg of anthraquinone, 0.4 kg of sodium polyacrylate, 0.6 kg of acetanilide, 0.8 kg of sodium pyropolyphosphate and 193.6 kg of water to form an oxidation degumming solution . 20 kg of raw hemp is immersed in 200 kg of solution. Raise the temperature to 85°C and keep it warm for 1 hour. Then add 1.4 kg of sodium hydroxide to the degumming solution, raise the temperature to 100° C., and keep the temperature for 1.5 hours. Take out the hemp and wash it with clean water. Use 1 kg of sodium bisulfite to prepare a reducing solution, immerse the treated ramie in it, raise the temperature to 70°C, and keep it warm for 40 minutes. The degummed ramie is pickled, then dehydrated, oiled, deoiled and dried. The breaking strength, elongation at break, and work at break of the fiber were teste...

Embodiment 3

[0036] The method of improving the tensile properties of ramie fiber in oxidation degumming is as follows:

[0037] 1.2 kg of potassium peroxide, 0.6 kg of sodium hydroxide, 0.2 kg of sodium anthraquinone-2-sulfonate, 0.4 kg of sodium citrate, 0.6 kg of polyacrylamide, 0.8 kg of sodium pyropolyphosphate and 193.6 kg of water are made into oxidation degumming solution. 20 kg of raw hemp is immersed in 200 kg of solution. Raise the temperature to 85°C and keep it warm for 1 hour. Then add 1.4 kg of sodium hydroxide to the degumming solution, raise the temperature to 100° C., and keep the temperature for 1.5 hours. Take out the hemp and wash it with clean water. Use 1 kg of hydrosulfite to prepare a reducing solution, immerse the treated ramie in it, raise the temperature to 70°C, and keep it warm for 40 minutes. The degummed ramie is pickled, then dehydrated, oiled, deoiled and dried. The breaking strength, elongation at break, and work at break of the fiber were tested by a ...

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Abstract

The invention relates to a method for enhancing the property of a ramie fiber through oxidative degumming. The method comprises the following steps of mixing original ramie and a peroxide degumming solution according to mass ratio being 1 to 10, boiling for 40-60 minutes under the condition of 80-85 DEG C, wherein with respect to the weight percent of the original ramie, the peroxide degumming solution comprises the following components by weight percent: 1%-4% of sodium hydroxide, 3%-8% of peroxides, 0.5%-4% of quinones compounds, 1%-6% of a metal ion chelating agent, 2%-4% of a peroxide stabilizing agent, 2%-6% of a surface active agent and the balance being water; adding sodium hydroxide, boiling for 1-1.5 hours under the condition of 100 DEG C to obtain treated ramie; boiling the treated ramie and a reducing solution at 60-100 DEG C for 40-90 minutes, then applying oil, and drying. According to the method disclosed by the invention, needed degumming time is short and the efficiency is high and the bleaching and the degumming can be completed together; the prepared ramie fiber has good tensile property.

Description

technical field [0001] The invention belongs to the field of methods for improving fiber properties, in particular to a method for improving ramie fiber properties through oxidation degumming. Background technique [0002] Ramie is a perennial herbaceous plant belonging to the family Ramieceae. It is a unique textile material in China. It has strong adaptability to climate and soil, short harvest period and high economic value. Ramie fiber is long, high strength, white and mercerized in color. In the field of clothing, its fabric has the characteristics of crispness, coolness, fast moisture absorption and heat dissipation, and not close-fitting, and can be processed into fine or rough fabrics. In the field of industrial use, it can be used as a raw material for aircraft wing cloth, fishing nets, high-grade paper, gunpowder, and rayon due to its corrosion resistance, insulation, and antibacterial properties. [0003] The main component of ramie fiber is cellulose, and the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02
Inventor 孟超然刘凤明孙娜郁崇文杨建平张斌张明明
Owner DONGHUA UNIV
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