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Method for preparing environment-friendly bamboo recombinant material

An environmentally friendly, bamboo technology, applied in the direction of flat products, wood processing appliances, household components, etc., can solve the problems of increasing processing procedures, surface cracking, increasing production costs, etc., to improve dimensional stability, good shaping effect, and improve use. performance effect

Inactive Publication Date: 2012-07-04
JIANGXI KANGTILONG BAMBOO PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] First, because the blue-yellow surface of bamboo is mainly composed of lignin and extracts, and contains a certain amount of silicon oxide, it forms a closed layer with sugar as the skeleton and mixed with silicon organic matter, which is difficult to apply glue or finish. The follow-up industrial processing and utilization of bamboo brings inconvenience
At present, most of the production enterprises of recombined bamboo use de-green and yellow bamboo as raw materials to prepare recombined bamboo. Although the de-green and yellow process can improve the bonding strength of recombined bamboo, it is not only a waste of resources, but also increases the processing steps and increases the production cost.
[0007] Second, because the recombined bamboo is mainly cured under high temperature and high pressure, with the change of environmental humidity and heat conditions or the release of internal stress during use, there will be dimensional deformation, surface cracking, warping, and unevenness, which limits its outdoor use. usage of
[0008] Third, the adhesive used in the production of recombined bamboo is mainly phenolic resin adhesive, which contains harmful substances such as free phenol and free aldehyde, and the price is relatively high
With the proposal of building an environment-friendly and economical society, more and more attention has been paid to the production environment and human health, and there is an urgent need to develop an environmentally friendly adhesive with low price for the preparation of recombined bamboo, but there is no report yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Use 3-5 year old moso bamboo (diameter 6-10cm) to intercept it into 2 m long bamboo sections, cut them into 4-8 pieces, remove the inner and outer bamboo nodes; roll and loosen the bamboo sections into long, cross-linked bamboo sections And keep the loose mesh fiber bundles of the original arrangement of fibers, with a width of 4cm; the bamboo bundles after decompression are placed in a drying kiln, and dried at a temperature of 60°C to a moisture content of 10%; the bamboo bundles are treated with a continuous low-temperature plasma processor The surface of bamboo bundles is treated, and the processing parameters are: time 5s, treatment distance 10mm, power 650W; the treated bamboo bundles are soaked in the glue solution for 10min; ) prepared by the method described, the adhesive is watered to a solid content of 25%, and the weight ratio of 0.5% fast penetrating agent T is added to the adhesive; the dipped bamboo bundles are dried twice to contain water at a temperature...

Embodiment 2

[0033]Use small-diameter bamboo and branch bamboo as raw materials, intercept them into 2m-long bamboo sections, and roll the bamboo sections into long, interlinked and loose mesh fiber bundles that maintain the original arrangement of fibers; The bamboo bundles are placed in a drying kiln and dried at a temperature of 60°C until the moisture content is about 10%; the surface of the bamboo bundles is treated with a continuous low-temperature plasma processor, and the processing parameters are: time 5s, treatment distance 10mm, power 650W; treatment The final bamboo bundles were soaked in the glue solution for 10 minutes; the adhesive was prepared by the method described in Chinese patent ZL 2007 1 0132638.0 (method for preparing outdoor plywood adhesive by liquefaction of peanut shells), and the adhesive was mixed with water until the solid content was 25%. And add penetrating agent pull-opening powder with a weight ratio of 1% in the adhesive; dry the dipped bamboo bundles at ...

Embodiment 3

[0036] Use bamboo processing strip residues as raw materials, put them in a drying kiln after rolling and decomposing, and dry them at a temperature of 60°C until the moisture content is about 10%; use a continuous low-temperature plasma treatment machine to treat the surface of bamboo bundles, and the treatment process Parameters: time 5s, treatment distance 10mm, power 650W; the treated bamboo bundles were soaked in the glue solution for 10 minutes; the adhesive was prepared by the method described in Chinese patent ZL 2007 1 0132638.0 (method for preparing outdoor plywood adhesive by liquefaction of peanut shells) , the adhesive is watered to a solid content of 25%, and the fast penetrating agent T that is 2% by weight is added to the adhesive; the bamboo bundles are dried twice to a moisture content below 12% at a temperature of 60 ° C; The final rubber-impregnated bamboo bundles are assembled along the grain and in the same direction, and then sent to a hot press to be pre...

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Abstract

The invention discloses a method for preparing an environment-friendly bamboo recombinant material. The method comprises the following steps of: cutting various bamboo serving as raw materials into sections, or crackling and removing inner bamboo joints; calendaring and defibering; drying at the temperature of between 60 and 80 DEG C until the moisture content is 8 to 14 percent; processing the surfaces of bamboo bundles by using a low-temperature plasma processor; taking out and draining; spreading the bamboo joints which are dried after gum dipping in the same fiber direction or filling the bamboo joints which are dried after gum dipping into a die to form slabs; and hot-forming. According to the method, bluish yellow surfaces are removed without any chemical means, and the comprehensive utilization rate of the bamboo can reach over 95 percent. The wetting property of the bamboo is improved by a low temperature plasma technology, the size stability of a recombinant bamboo product is effectively improved, and the surface performance of various polymer materials can be changed quickly, and efficiently in a pollution-free and non-destructive way. The recombinant bamboo is prepared by using a peanut shell liquefied resin adhesive, so the cost is reduced, and the content of free aldehyde is low; and production environment can be improved effectively, the phenomenon of allergic reaction of workers is reduced or eliminated, and the method is beneficial to body health of the workers.

Description

technical field [0001] The invention relates to a bamboo recombined material, in particular to a method for preparing the bamboo recombined material by using modern low-temperature plasma treatment technology and a novel biomass liquefied resin adhesive, and belongs to the technical field of bamboo wood-based panel processing. Background technique [0002] Recombined bamboo is a new bamboo material that reorganizes and strengthens bamboo. It is processed from bamboo into bamboo strips, bamboo silk or loose mesh bamboo bundles, which are dried, glued, formed and cured under high temperature and high pressure. And forming. It has the characteristics of high density, high strength, impact resistance, and wear resistance, and can be used for indoor and outdoor building materials, decoration materials, high-end furniture, doors, windows, floors, etc. The development and research of recombinant bamboo is of great significance for alleviating the tension of timber resources and ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/08
Inventor 孙丰文钟三明张茜贺磊
Owner JIANGXI KANGTILONG BAMBOO PRODS
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