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A kind of preparation method of long bamboo fiber

A technology of bamboo raw fiber and raw fiber, which is applied in the field of plant fiber production, can solve the problems of low yield, heavy wastewater pollution, and low production efficiency, and achieve the effects of soft fiber, light wastewater pollution, and high production efficiency

Active Publication Date: 2019-12-13
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of preparation method of long bamboo raw fiber, solve the problems of low production efficiency, low yield and heavy waste water pollution in the existing preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of flexible bamboo fibril, comprises the steps:

[0030] Step 1. Slicing: Slice the bamboo, the bamboo slices are 4-6 cm in length and 2-3 mm in thickness.

[0031] Step 2. High temperature and high pressure treatment of bamboo chips: The bamboo chips are placed in a container at 110° C. and a pressure of 1.5 MPa for hot water pretreatment for 30 minutes. The ratio of wood chips to water is 1 kg wood chips corresponding to 3 liters of water.

[0032] Step 3. Tearing treatment of bamboo chips: the bamboo chips treated with high temperature and high pressure are subjected to two mechanical tearing treatments with a screw extrusion tearing machine with a compression ratio of 4 to obtain bulky bamboo fiber bundles.

[0033] Step 4. Enzymatic treatment: the bulky bamboo fiber bundles are placed in an alkaline pectinase mixed solution with a temperature of 50 ° C and a pH of 8.0 for 90 minutes, and the amount of alkaline pectinase is 15IU / kg dry fiber,...

Embodiment 2

[0038] The preparation method of bamboo fibril, comprises the steps:

[0039] Step 1. Slicing: Slice the bamboo, the bamboo slices are 4-6 cm in length and 2-3 mm in thickness.

[0040] Step 2. High temperature and high pressure treatment of bamboo chips: The bamboo chips are placed in a container at 120° C. and a pressure of 1.2 MPa for hot water pretreatment for 40 minutes. The ratio of wood chips to water is 1 kg wood chips corresponding to 3 liters of water.

[0041] Step 3. Tearing treatment of bamboo chips: the bamboo chips treated with high temperature and high pressure are subjected to two mechanical tearing treatments with a screw extrusion tearing machine with a compression ratio of 4 to obtain bulky bamboo fiber bundles.

[0042]Step 4. Enzymatic treatment: the bulky bamboo fiber bundles are placed in an alkaline pectinase mixed solution with a temperature of 55 ° C and a pH of 8.5 for 80 minutes, and the amount of alkaline pectinase is 18IU / kg dry fiber, The mass...

Embodiment 3

[0047] The preparation method of bamboo fibril, comprises the steps:

[0048] Step 1. Slicing: Slice the bamboo, the bamboo slices are 4-6 cm in length and 2-3 mm in thickness.

[0049] Step 2. High temperature and high pressure treatment of bamboo chips: The bamboo chips are placed in a container at 125° C. and a pressure of 1.0 MPa for hot water pretreatment for 20 minutes. The ratio of wood chips to water is 1 kg wood chips corresponding to 3 liters of water.

[0050] Step 3, tearing treatment of bamboo chips: the bamboo chips treated with high temperature and high pressure are subjected to three mechanical tearing treatments with a screw extrusion tearing machine with a compression ratio of 4 to obtain bulky bamboo fiber bundles.

[0051] Step 4. Enzymatic treatment: the bulky bamboo fiber bundles are placed in an alkaline pectinase mixed solution with a temperature of 60 ° C and a pH of 8.0 for 70 minutes, and the amount of alkaline pectinase is 10 IU / kg dry fiber, The ...

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Abstract

The invention discloses a preparation method of long raw bamboo fiber, which belongs to the technical field of vegetable fiber production, and solves the problems of low production efficiency, low yield and serious waste water pollution of the current preparation methods. The method comprises the following steps: bamboo wood slicing, high-temperature high-pressure treatment, tearing processing, enzyme processing, chemical treatment, drying, and carding processing. The obtained long raw bamboo fiber has the following characteristics that an average fiber length is 4-5 cm, fineness is no less than 100 Nm, and the yield is no less than 60%. In addition, the long raw bamboo fiber has the beneficial effects that high production efficiency (annual output of a production line is no less than 50,000 tons), waste water pollution is light, and fiber is soft.

Description

technical field [0001] The invention relates to a preparation method of bamboo fibrils, in particular to a preparation method of long bamboo fibrils, and belongs to the technical field of plant fiber production. Background technique [0002] Bamboo is an important forest resource. my country is the country with the most abundant bamboo resources. There are more than 500 kinds of bamboo and a planting area of ​​up to 5 million hectares. Over the past 20 years, the industrialization of bamboo has developed rapidly, and the bamboo industry has become a new economic growth point for my country's forestry development. Bamboo fiber is another new type of fiber after cotton, hemp, wool and silk. According to different processing methods, bamboo fiber can be divided into regenerated bamboo fiber (viscose fiber) and natural bamboo fiber (also known as bamboo fiber). Regenerated bamboo fiber is obtained by vigorously chemically treating bamboo to remove non-cellulose components such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/02D01B1/10
CPCD01B1/10D01C1/02
Inventor 苗庆显陈礼辉黄六莲曹石林赵鹤李凯旋范宏玥
Owner FUJIAN AGRI & FORESTRY UNIV
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