Manufacturing method of high-strength long bamboo fiber bundles

A manufacturing method, bamboo fiber technology, applied in the direction of manufacturing tools, reed/straw treatment, wood treatment, etc., can solve the problems of strength reduction, cost of chemical reagents, labor and time-consuming, etc., and achieve small strength drop and good dimensional stability , the effect of simple processing method

Inactive Publication Date: 2017-12-12
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical segregation method needs to spend chemical reagents, and the treatment of wastewater is also a big problem; the use of physical dispersing is labor-inten

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, a kind of manufacture method of high-strength long bundle bamboo fiber is as follows:

[0018] (1) Bamboo pre-treatment, fresh bamboo tubes with a diameter of 100mm are cut into 2m long bamboo tubes according to the requirements, all the internal nodes in the bamboo tubes are removed, and they are discharged on the trolley with an 8° inclination to facilitate the discharge of condensed water in the bamboo tubes. Put the high-temperature steam at 190°C into the tank. When it is first introduced, first discharge the cold air and condensed water in the tank, so that the temperature in the tank rises rapidly to 190°C, and then keep it warm for 12 minutes. The round bamboo tube has been carbonized , stop the steam at this time, and slightly open the exhaust valve to slowly discharge the steam in the tank until all the steam in the tank is discharged;

[0019] (2) High-temperature saturated steam treatment of bamboo; push the cart equipped with bamboo tubes into...

Embodiment 2

[0021] Embodiment 2, a kind of manufacture method of high-strength long bundle bamboo fiber is as follows:

[0022] (1) Pre-treatment of bamboo, fresh bamboo tubes with a diameter of 100mm are cut into 0.8m long bamboo tubes according to the requirements, all the internal nodes in the bamboo tubes are removed, split into 2 pieces, and then discharged on the trolley with an inclination of 10°. to facilitate the discharge of condensed water in the bamboo tube;

[0023] (2) High-temperature saturated steam treatment of bamboo; push the trolley containing bamboo into the pressure tank, close the tank door, and pass high-temperature saturated steam at a temperature of 170°C into the tank for 40 minutes. Then slightly open the exhaust valve to slowly discharge the steam in the tank until all the steam in the tank is discharged, and then pull out the trolley;

[0024] (3) Bamboo is rolled to disperse bamboo fiber bundles, and the bamboo is then rolled horizontally to separate the ba...

Embodiment 3

[0025] Embodiment 3, a kind of manufacture method of high-strength long bundle bamboo fiber is as follows:

[0026] (1) Bamboo pre-treatment, fresh bamboo tubes with a diameter of 200mm are cut into 2m long bamboo tubes according to the requirements, all the internal nodes in the bamboo tubes are removed, split into 5 pieces, and then discharged on the trolley at an angle of 10°, with the bamboo green facing upwards , so that the condensed water in the bamboo tube can be discharged;

[0027] (2) High-temperature saturated steam treatment of bamboo; push the trolley containing bamboo into the pressure tank, close the tank door, and pass high-temperature saturated steam at a temperature of 160°C into the tank for 60 minutes. Then slightly open the exhaust valve to slowly discharge the steam in the tank until all the steam in the tank is discharged, and then pull out the trolley;

[0028] (3) The bamboo is rolled to disperse the bamboo fiber bundles, and then the bamboo is hamme...

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Abstract

The invention relates to a manufacturing method of high-strength long bamboo fiber bundles. The manufacturing method comprises the following steps of (1) pretreating bamboo wood; (2) conducting high-temperature saturated vapor treatment on the bamboo wood; and (3) rolling the bamboo wood and dispersing the bamboo wood into bamboo fiber bundles. The manufacturing method has the advantages that fresh round bamboo tubes or bamboo chips soaking in the water are adopted and are subjected to fast heat treatment with high-temperature saturated vapor for 10-60 min; the bamboo fiber bundles are separated easily through multi-roll longitudinal rolling or single-roll transverse rolling or hammering to obtain the high-strength long bamboo fiber bundles; as the bamboo chips contain water, parenchyma tissues between the bamboo fiber tube bundles are destructured under the actions of pyrohydrolysis and high-temperature pyrolysis; the bamboo fiber tube bundles are separated easily. The manufacturing method is adopted for producing the high-strength long bamboo fiber bundles and has the advantages that the cost is low; no chemical reagents are added; the treatment method is simple; the time is short; the strength of fibers is hardly reduced; and the high-strength long bamboo fiber bundles can be used as fuel or organic fertilizer for fertilizing the soil after being discarded.

Description

technical field [0001] The invention relates to a method for manufacturing high-strength long-bundle bamboo fibers, which belongs to the technical field of bamboo processing in the wood industry. Background technique [0002] Most natural fiber composites use bundled fibers. The bamboo bundle fiber preparation methods of bamboo mainly include chemical segregation and physical dispersal, among which sulfite pulping is the representative, and the regeneration of cellulose is realized by removing lignin. Combination is usually used for textile; while the physical unwinding method represented by mechanical rolling is to achieve the reorganization of vascular bundles by effectively separating parenchyma cells. It is known that the tensile strength of a single bamboo fiber is as high as 1770MPa (chemical separation), 930MPa (mechanical separation); The tensile strength of bamboo silk fibers formed by the separation of multiple vascular bundles of bamboo parenchyma cells reaches 6...

Claims

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Application Information

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IPC IPC(8): B27K5/00B27K9/00
CPCB27K9/002B27K5/007B27K5/0085
Inventor 许斌朱其孟李延军程大莉张齐生
Owner NANJING FORESTRY UNIV
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