Method for improving mechanical property of lotus fiber

A lotus fiber and performance technology, applied in the field of lotus fiber modification, can solve problems such as mechanical strength discount, achieve low equipment requirements, improve degumming rate, and facilitate post-processing effects

Active Publication Date: 2020-08-25
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few lotus fiber products, mainly because the mechanical strength of lotus fiber is greatly reduced after degumming and other treatments

Method used

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  • Method for improving mechanical property of lotus fiber
  • Method for improving mechanical property of lotus fiber
  • Method for improving mechanical property of lotus fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The present embodiment provides a method for improving the mechanical properties of lotus fiber, and its specific processing method is as follows:

[0030] 1. Take fresh lotus fiber and soak it in a sulfuric acid solution with a mass-volume ratio of 1.8mL / L for 5-10min.

[0031] 2. Prepare a 1-ethyl-3-methylimidazole chloride solution with a concentration of 30g / L and heat it to 60°C, then add carboxymethylcellulose sodium in an amount of 4g / L. Before use, add 8g / L wheat bran, shake and mix for 1min to obtain a mixed solution, which is prepared and used immediately.

[0032] 3. Take out the lotus fiber soaked in acid, drain it, put the lotus fiber into the mixed solution in step 2 according to the addition amount of 100g / L, and microwave it for 20min under the condition of microwave power of 60w.

[0033] 4. After the microwave treatment, rinse the lotus fibers with 40° C. water. After the rinsing, boil the lotus fibers with 10% (m / V) sodium hydroxide solution for 10 m...

Embodiment 2

[0038] The present embodiment provides a method for improving the mechanical properties of lotus fiber, and its specific processing method is as follows:

[0039] 1. Take fresh lotus fiber and soak it in a sulfuric acid solution with a mass-volume ratio of 2.2mL / L for 5-10min.

[0040] 2. Prepare a 1-ethyl-3-methylimidazole chloride solution with a concentration of 10g / L and heat it to 55°C, then add carboxymethylcellulose sodium in an amount of 2g / L. Before use, add 3g / L wheat bran, shake and mix for 2 minutes to obtain a mixed solution, which is prepared and used immediately.

[0041] 3. Take out the lotus fiber soaked in acid, drain and put the lotus fiber into the above mixture according to the addition amount of 120g / L, and microwave it for 30min under the condition of microwave power of 20w.

[0042] 4. After the microwave treatment, rinse the lotus fiber with 35° C. water, and boil the lotus fiber with 8% (m / V) sodium hydroxide solution for 60 minutes under the condition...

Embodiment 3

[0047] The present embodiment provides a method for improving the mechanical properties of lotus fiber, and its specific processing method is as follows:

[0048] 1. Take fresh lotus fiber and soak it in a sulfuric acid solution with a mass-volume ratio of 0.6mL / L for 5-10min.

[0049] 2. Prepare a solution of 1-ethyl-3-methylimidazole chloride with a concentration of 45g / L and heat it to 70°C, then add sodium carboxymethyl cellulose in an amount of 5g / L. Before use, add 10g / L wheat bran, shake and mix for 3 minutes to obtain a mixed solution, which is prepared and used immediately.

[0050] 3. Take out the lotus fiber soaked in acid, drain it, put the lotus fiber into the above mixture according to the addition amount of 150g / L, and microwave it for 5 minutes under the condition of microwave power of 80w.

[0051] 4. After the microwave treatment, rinse the lotus fiber with 45°C clear water, and boil the lotus fiber with 12% (m / V) sodium hydroxide solution for 30 minutes und...

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Abstract

One or more embodiments of the invention provide a method for improving the mechanical property of a lotus fiber, and belong to the technical field of lotus fiber modification. The modification methodcomprises the steps that the lotus fibers are placed in a sulfuric acid solution for soaking; a mixed solution of a 1-ethyl-3-methylimidazolium chloride solution, sodium carboxymethyl cellulose and wheat bran is added, and microwave treatment is carried out; the lotus fibers are boiled with sodium hydroxide solution; soaking is carried out in a sulfuric acid solution; and finally, baking is carried out at 90-110 DEG C for 80-120 min to obtain the treated lotus fibers. The modified lotus fiber not only has excellent chemical properties such as moisture absorption and moisture release performance, but also has high medicinal value, and can be used for making close-fitting clothes and articles. Thus, the method for improving the performance of the lotus fiber has a great market prospect, andhas a wide application prospect in the future.

Description

technical field [0001] One or more embodiments of this specification relate to the technical field of lotus fiber modification, in particular to a method for improving the mechanical properties of lotus fiber. Background technique [0002] The longitudinal structure of lotus fiber is a bundle of fibers composed of many monofilament fibers (or called microfibers). The lotus fiber obtained by the artificial spinning method is not a monofilament as imagined, but a multifilament in the form of a flat ribbon-like association, generally a multifilament composed of 4 to 10 monofilaments. This characteristic of lotus fiber is the same as lotus root silk fiber. As the external force is pulled and stretched, the lotus fiber changes from a tight spiral ribbon to a loose spiral ribbon or a straight line, with a slight twist or no curl, the curvature decreases, and the curvature decreases. In the longitudinal channel of the lotus stalk, the monofilament fibers are closely associated an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02D01B1/10
CPCD01C1/02D01B1/10
Inventor 闫红芹李伟汪辉张艳艳
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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