Natural freezing and mechanical combined degumming method for fibrilia

A degumming method and hemp fiber technology, which are applied in the directions of fiber mechanical separation, mechanical treatment, fiber treatment, etc., can solve the problems of difficult product purification, complex process, and many degumming components, and achieve low residual glue rate, high efficiency and low cost. Effect

Inactive Publication Date: 2020-09-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many degumming components, and the process is complicated, so it is difficult to purify the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The present embodiment provides a degumming process of hemp fiber, comprising the following steps:

[0022] 1) Low temperature treatment: The hemp fiber raw material is exposed and placed in the northeast winter when the average temperature is -23.8--25.0℃, and the duration is 50 days;

[0023] 2) peeling treatment: put the hemp fiber after low temperature treatment into the peeling machine, and after crushing, the wood core is ground into small pieces and separated from the fiber;

[0024] 3) Mechanical treatment: use a soft hemp machine to remove the glue of the hemp fiber bundle and separate the fibers through the feeding area, the mechanical rubbing area, the beating and impurity removing area, the discharging area and the impurity removing device;

[0025] 4) lye cleaning: the configuration concentration is 5g / L NaOH solution;

[0026] 5) Post-treatment process: Wash the hemp fiber with distilled water until it is nearly neutral, dry it in an oven at 80°C for 6 ho...

Embodiment 2

[0029] The present embodiment provides a degumming process of hemp fiber, comprising the following steps:

[0030] 1) Low temperature treatment: The hemp fiber raw material is exposed and placed in the northeast winter when the average temperature is -25.5--26.5 ℃, and the duration is 40 days;

[0031] 2) peeling treatment: put the hemp fiber after low temperature treatment into the peeling machine, and after crushing, the wood core is ground into small pieces and separated from the fiber;

[0032] 3) Mechanical treatment: use a soft hemp machine to remove the glue of the hemp fiber bundle and separate the fibers through the feeding area, the mechanical rubbing area, the beating and impurity removing area, the discharging area and the impurity removing device;

[0033] 4) lye cleaning: the configuration concentration is 3g / L NaOH solution;

[0034] 5) Post-treatment process: Wash the hemp fiber with distilled water for several times until it is nearly neutral, dry it in an ov...

Embodiment 3

[0040] The present embodiment provides a degumming process of jute fiber, comprising the following steps:

[0041] 1) Low temperature treatment: The raw jute fiber raw materials are exposed and placed in the northeast winter when the average temperature is -25.3--26.1 ℃, and the duration is 65 days;

[0042] 2) peeling treatment: put the jute fiber after the low temperature treatment into the peeling machine, and after crushing, the wooden core is ground into small pieces and separated from the fiber;

[0043] 3) Mechanical treatment: use a soft hemp machine to remove the gum of the jute fiber bundle and separate the fibers through the feeding area, the mechanical rubbing area, the beating and impurity removing area, the discharging area and the impurity removing device;

[0044] 4) lye cleaning: the configuration concentration is 5g / L NaOH solution;

[0045] 5) Post-treatment process: the jute fibers are washed with distilled water for several times until nearly neutral, dri...

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PUM

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Abstract

The invention provides a natural freezing and mechanical combined degumming method for fibrilia. The method comprises the following steps of: low-temperature treatment: exposing hemp stalks and placing the hemp stalks under the natural condition of -10 to -30 DEG C in winter in northeast for 30-90 days; peeling treatment: placing the fibrilia subjected to low-temperature treatment into a peeling machine for treatment; mechanical beating: removing colloid of fibrilia bundles and separating fibers by using a softening machine through a feeding area, a mechanical kneading area, a beating impurityremoval area, a discharging area and an impurity removal device; and post-treatment process: cleaning the fibers with an alkali solution, then washing the fibers with distilled water for a pluralityof times until the fibers are close to neutral, and drying the fibers for later use to complete degumming. The degumming method provided by the invention adopts natural freezing and mechanical combined degumming, and compared with other process methods, the method has the advantages that the treatment cost is reduced on the whole, the emission of pollutants is reduced, the damage to the fibrilia is reduced, the performance of the fibrilia is improved, and the method is a fibrilia degumming process with low cost, high efficiency and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of degumming of hemp fibers, and provides a natural freezing and mechanical combined degumming process of hemp fibers. Background technique [0002] Hemp fiber mainly includes hemp, jute, flax, sisal, kenaf, ramie, etc. Its chemical composition is mainly cellulose, and also contains hemicellulose, lignin, pectin, ash and so on. Degumming treatment is an effective measure to improve the surface roughness of hemp fibers and reduce impurities such as hemicellulose, lignin and pectin. The existing degumming technologies include mechanical degumming, chemical degumming, biological degumming, combined degumming, etc., and there are problems such as incomplete degumming, serious environmental pollution, and complex process technology. Moreover, with the improvement of people's awareness of environmental protection and the gradual improvement of the quality of life, the problem of volatile organic compounds (VOCs) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01B1/14D01B9/00D01C1/02
CPCD01B1/14D01B9/00D01C1/02
Inventor 李志刚韦新培刘雪强贾红杰徐进
Owner JILIN UNIV
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