Reconstituted bamboo board and preparation method thereof

A technology for recombining bamboo boards and bamboo materials, which is applied in the direction of manufacturing tools, mechanical equipment, wood processing utensils, etc., can solve the problem that the alternative method of adhesive selection has not been paid attention to, and achieve good corrosion resistance, high early strength, and safe use. Effect

Inactive Publication Date: 2018-11-13
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the research on improving the performance of recombinant bamboo mainly focuses on the treatment technology of bamboo body or the modification method of adhesive, so that one or several propert

Method used

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  • Reconstituted bamboo board and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0065] Example 1

[0066] 1) Bamboo unit preparation

[0067] Cut the moso bamboo into bamboo tubes, cut out bamboo bundles with a length of 350mm (according to the size of the existing moulding equipment) after disintegration; then dry the bamboo bundles, where the drying temperature is (105±5)℃, and the moisture content is 8% (usually 5%-40%) of dry bamboo bundle units.

[0068] 2) Preparation of inorganic adhesive

[0069] 2-1) First, prepare an alkaline excitation solution, blend liquid sodium silicate with a modulus of 1.5 (usually 1-3.5) and a NaOH solution with a concentration of 10 mol / L (usually 1-30 mol / L) to prepare After the mixed solution is cooled to room temperature, let it stand for 20h (usually 20-36h) to make an alkaline excitation solution, standby, liquid Na 2 SiO 3 The volume ratio with NaOH solution is 2.5:1 (usually 1-5:1);

[0070] In the embodiment of the present invention, the NaOH solution is taken as an example as an alkaline solution and mixed with liquid ...

Example Embodiment

[0083] Example 2

[0084] 1) Bamboo unit preparation

[0085] Saw the moso bamboo into bamboo tubes, cut out bamboo filaments with a length of 350mm (according to the size of the existing molding tool) after disintegration; then dry the bamboo filaments, where the drying temperature is (105±5)℃, and the moisture content is 10% (usually 5%-40%) of dry bamboo silk units.

[0086] 2) Preparation of inorganic adhesive

[0087] 2-1) First, prepare an alkaline excitation solution, blend liquid sodium silicate with a modulus of 1.4 (usually 1-3.5) and a NaOH solution with a concentration of 11mol / L (usually 1-30mol / L) to prepare After the mixture is cooled to room temperature, let it stand for 24h (usually 20-36h) to make an alkaline excitation solution, standby, liquid Na 2 SiO 3 The volume ratio to NaOH solution is 2.6:1 (usually 1-5:1);

[0088] 2-2) Put metakaolin and alkali activator in a cement mortar mixer, mix well, then add 6% modifier ethylene-vinyl acetate copolymer hot melt adhes...

Example Embodiment

[0098] Example 3

[0099] 1) Bamboo unit preparation

[0100] Cut the moso bamboo into bamboo tubes, cut bamboo strips with a length of 350mm after disintegration; then dry the bamboo strips, where the drying temperature is (105±5)℃, and the moisture content of the dried product is 8% (usually 5%- 40%) of the dry bamboo strip unit.

[0101] 2) Preparation of inorganic adhesive

[0102] 2-1) First, prepare an alkaline excitation solution, blend liquid sodium silicate with a modulus of 1.3 (usually 1-3.5) and a NaOH solution with a concentration of 20mol / L (usually 1-30mol / L) to prepare After the mixed solution is cooled to room temperature, let it stand for 28h (usually 20-36h) to make an alkaline excitation solution, standby, liquid Na 2 SiO 3 The volume ratio with NaOH solution is 3:1 (usually 1-5:1);

[0103] 2-2) Put metakaolin and alkali activator in a cement mortar mixer, mix well, then add 8% modifier acrylic 707 emulsion, and then perform high-speed shearing and stirring at a s...

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Abstract

The invention discloses a preparation method of a reconstituted bamboo board and reconstituted bamboo prepared through the method. After bamboo wood is disposed in inorganic adhesives for impregnation, assembly and pressing treatment are carried out successively, the reconstituted bamboo is obtained, and the inorganic adhesives are formed by mixing geopolymers, stimulation solutions and modifiersin sequence. The geopolymers are used as the novel inorganic adhesives of the reconstituted bamboo prepared by adopting the method and play the effects of adhesives, fire-proofing agents and water-proofing agents, composite modifiers are added, and meanwhile the combination of the reinforcing and toughening of a matrix and the capacity expansion of bamboo wood glue joint interfaces is realized. The reconstituted bamboo has excellent mechanical properties, excellent water resistance, fire resistance and durability, has remarkable production, energy conservation and emission reduction effects, and is green and environment friendly. The technology is beneficial for efficient utilization of the bamboo wood and kaolin resources.

Description

technical field [0001] The invention relates to an artificial board and a preparation method thereof, in particular to a polymer-based recombined bamboo board for structural use and a preparation method thereof, belonging to the field of recombined bamboo preparation. Background technique [0002] According to incomplete statistics, there are more than 70 genera and more than 1,200 species of bamboo plants in the world, and the bamboo forest area reaches more than 48,000 mu. China is one of the origins and distribution centers of bamboo plants in the world. It is the most important bamboo-producing country in the world. There are more than 530 kinds of bamboo plants in 39 genera. The quantity ranks first in the world and is known as the "Kingdom of Bamboo" (World Bamboo and Rattan Conference, 2018). Bamboo resource is one of the most promising forest resources, and it is a renewable and reusable resource. [0003] In recent years, the world's timber resources are increasin...

Claims

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Application Information

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IPC IPC(8): B27D1/08B27D1/04B27J1/00C09J1/02C09J11/04C09J11/06C09J11/08
CPCB27D1/04B27D1/08B27J1/00C09J1/02C09J11/04C09J11/06C09J11/08
Inventor 张扬潘大卫于志明叶翰舟刘博文
Owner BEIJING FORESTRY UNIVERSITY
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