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Method for ultrasonic combined extraction of long and uniform natural bamboo fiber

A natural bamboo fiber, combined extraction technology, applied in the chemical post-processing of fibers, fiber processing, fiber mechanical separation, etc., can solve the problems of large quality difference, large strength damage, uneven separation, etc., to maintain the uniformity of length. and mechanical strength, increase surface roughness, and improve the effect of fineness uniformity

Inactive Publication Date: 2016-05-18
JIANGXI ACAD OF FORESTRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the bamboo fiber prepared by chemical method and chemical biological method is mainly for textile use. This kind of method has long process flow, low fiber yield, large strength damage and high energy consumption; the bamboo fiber obtained by blasting method is short in length and scattered unevenly. , which has great restrictions on the subsequent processing technology, some of the final bamboo fiber products are cotton-like, some are thick, short, hard, or the separation degree is uneven, and the quality varies greatly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of method that ultrasonic joint extracts long neat type natural bamboo fiber, its step comprises,

[0021] (1) Raw bamboo treatment: Take half-year-old moso bamboo, cut it according to the bamboo joints, remove the green, split, and split the strips to form bamboo slices with a length of 30cm, a width of 2cm, and a thickness of 1.0-1.2mm;

[0022] (2) Combined ultrasonic softening: put the above-mentioned bamboo slices and alkaline solution together in an ultrasonic tank, heat and cook to swell and soften, and conduct ultrasonic at the beginning of cooking at the same time, ultrasonic frequency 20kHz, ultrasonic power 400W, ultrasonic temperature 70°C, ultrasonic time 15min; After the ultrasonic wave is completed, continue to heat up to 90°C for scouring, heating time is 70min, the alkaline solution is 1% NaOH solution, and the bath ratio is 1:6; the bath ratio is the mass ratio of bamboo chips to alkaline solution;

[0023] (3) Washing: Rinse the bamboo slices t...

Embodiment 2

[0031] A kind of method that ultrasonic joint extracts long neat type natural bamboo fiber, its step comprises,

[0032] (1) Raw bamboo treatment: Take the 2-year-old rooted bamboo, cut it into slices, remove the green, and cut it according to the same length to form equal-length bamboo slices with a length of 30 cm, a width of 3 cm, and a thickness of 5.0-6.0 mm;

[0033] (2) Ultrasonic combined softening: put the above-mentioned bamboo chips and alkaline solution together in an ultrasonic tank, first heat and cook in the alkaline solution without ultrasound to swell and soften, the cooking temperature is 100°C, the heating time is 1h, the bath ratio 1:10, the alkaline solution is 1% NaOH solution and 0.5% Na 2 SO 3 For the mixed liquid, after cooking, conduct ultrasonic in the cooking liquid directly, the ultrasonic frequency is 25kHz, the ultrasonic power is 250W, and the ultrasonic time is 15min;

[0034] (3) Washing: Rinse the bamboo slices treated in step (2) with wate...

Embodiment 3

[0042] A kind of method that ultrasonic joint extracts long neat type natural bamboo fiber, its step comprises,

[0043] (1) Raw bamboo treatment: take 3-year-old moso bamboo, slice it, remove green and yellow, cut it off, and form equal-length bamboo slices with a length of 20cm, a width of 2-2.5cm, and a thickness of 1.5-3.0mm;

[0044](2) Combined ultrasonic softening: put the above-mentioned bamboo chips and alkaline solution together in an ultrasonic tank, heat and cook for swelling and softening, ultrasonic frequency 40kHz, ultrasonic power 300W, ultrasonic temperature 80°C, ultrasonic time 30min; heat up after ultrasonic Continue heating and cooking at 100°C, heating time 90min, bath ratio 1:8, alkaline solution is 3% NaOH solution and 0.5% Na 2 SO 3 mixed solution;

[0045] (3) Washing: Rinse the bamboo slices treated in step (2) with water once, then soak them in dilute sulfuric acid with a mass fraction of 0.01% for 15 minutes, then take them out and wash them with...

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Abstract

The invention discloses a method for ultrasonic combined extraction of a long and uniform natural bamboo fiber. The method comprises the following steps: (1) raw bamboo treatment; (2) ultrasonic combined softening; (3) washing with water; (4) rolling and opening; (5) directed carding; (6) high-temperature boiling; (7) drying in the shade; (8) secondary carding; and (9) drying. By the ultrasonic combined softening technology at a room temperature, the amount pressure of the softener can be effectively reduced, the softening time is reduced, the softening efficiency is improved, the surface roughness of the bamboo fiber is increased, and subsequent utilization as a reinforcing material and interface bonding with the polymer are facilitated; bamboo fiber refining is carried out by physical methods of high-temperature boiling, drying in the shade and secondary carding; keeping of the length uniformity and mechanical strength of the bamboo fiber is facilitated; and the fineness uniformity of the bamboo fiber is improved.

Description

technical field [0001] The invention belongs to the technical field of natural plant fiber extraction, and in particular relates to a method for ultrasonically combined extraction of long-aligned natural bamboo fibers. Background technique [0002] Affected by the energy crisis and sustainable development of the environment, the development of high value-added applications of renewable plant fibers has become an important direction of material development. Due to the special biological structure of bamboo, the single fibers are bonded to each other through the transverse or axial direction in the bamboo tissue structure, so that the bamboo fibers are bundled as a whole and arranged in an orderly manner along the axial direction, which plays a major role in supporting the entire bamboo structure. Therefore, Bamboo fiber is a natural reinforcement. At present, there are a large number of jute, sisal and other hemp fibers used as reinforcing materials in the market, such as au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/00D01B1/10
CPCD01B1/10D01C1/00
Inventor 黄慧孙丰文王玉王小东余能富贺磊
Owner JIANGXI ACAD OF FORESTRY
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