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Manufacturing method of hollow reconstituted wood material for structure

A manufacturing method and hollow technology, applied in the field of green building materials, can solve the problems of low relative mechanical properties of structural components, difficult promotion of recombined wood materials, high manufacturing costs, etc., and achieve the effect of increasing relative mechanical properties, low cost and low manufacturing cost

Inactive Publication Date: 2019-05-28
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional manufacturing of recombined wood is often a solid cross-section, and the manufacturing cost is high. When it is used in structural beams and slabs and other building structural components, due to its own weight, the relative mechanical properties of the structural components are often low.
These existing problems will make it difficult for the recombined wood materials manufactured by traditional methods to be quickly promoted in building structural components such as structural beams and slabs

Method used

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  • Manufacturing method of hollow reconstituted wood material for structure
  • Manufacturing method of hollow reconstituted wood material for structure
  • Manufacturing method of hollow reconstituted wood material for structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) former bamboo is unpacked into bamboo bundle unit 1, makes the thickness of bamboo bundle unit be 10mm, and the length of bamboo bundle unit is 2500mm, and the width of bamboo bundle unit is 100mm;

[0036] (2) Drying the above-mentioned bamboo bundle unit by using hot air as a medium, the drying temperature is 50° C., and the drying time is 8 hours;

[0037] (3) impregnating the above-mentioned dried bamboo bundle unit in a phenolic resin solution, the solid content concentration of the phenolic resin solution is 10%, the immersion temperature is 25° C., and the immersion time is 10 minutes;

[0038] (4) the impregnated bamboo bundle unit pavement that step (3) obtains makes the number of layers of the bamboo bundle unit layer be 20 layers, and obtains the pre-pavement layer;

[0039] (5) The circular solid steel section bar 2 that is coated with release agent on all sides is paved on the pre-pavement layer obtained in step (4) and is positioned at the mid-width po...

Embodiment 2

[0053] (1) former bamboo is unpacked into bamboo bundle unit 1, makes the thickness of bamboo bundle unit be 10mm, and the length of bamboo bundle unit is 2500mm, and the width of bamboo bundle unit is 100mm;

[0054] (2) Drying the above-mentioned bamboo bundle unit by using hot air as a medium, the drying temperature is 50° C., and the drying time is 8 hours;

[0055] (3) impregnating the above-mentioned dried bamboo bundle unit in a phenolic resin solution, the solid content concentration of the phenolic resin solution is 10%, the immersion temperature is 25° C., and the immersion time is 10 minutes;

[0056] (4) the impregnated bamboo bundle unit that step (3) obtains is paved along the thickness direction, makes the number of layers of the bamboo bundle unit layer be 10 layers, obtains pre-pavement layer;

[0057] (5) the circular solid steel section bar 2 that is coated with release agent is paved on the pre-pavement layer obtained in step (4), and the diameter of the ci...

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Abstract

The invention relates to a manufacturing method of a hollow reconstituted wood material for a structure, and belongs to the technical field of green building materials. According to the method, raw bamboo, wood veneers and adhesives are used as raw materials for manufacturing the hollow reconstituted wood material for the structure through steps of defibering, drying, impregnation, laying, pressing shaping and the like. In the process of manufacturing the reconstituted wood material by a conventional process, a solid steel sectional material laying and demolding process is added so as to optimize the cross section shape of the reconstituted wood material; the reconstituted wood material with the hollow cross section is manufactured; the manufacturing cost is low; and the manufacturing process is simple and convenient. When the reconstituted wood material is used as structure components such as beams and plates, the relative mechanical properties of the whole components can be obviouslyimproved by using the optimized hollow cross section. The hollow reconstituted wood material for the structure can be simply, conveniently and fast manufactured by the method; and the manufactured reconstituted wood material for the structure has the characteristics of low cost and high mechanical properties, and has wide application prospects in building structures.

Description

technical field [0001] The invention relates to a method for manufacturing hollow recombined wooden materials for structures, especially suitable for building structural components such as recombined wooden beams and boards for structures, and belongs to the technical field of green building materials. Background technique [0002] In a series of policy documents such as the "Green Building Action Plan", "Action Plan for Promoting the Production and Application of Green Building Materials", and "National New Urbanization Plan (2014-2020)", wood materials have been clearly listed as green building materials. category. Recombined wood is made of bamboo bundles or wood bundles through processes such as dipping, drying, forming and gluing. It has been promoted and applied in more than 10 provinces in my country, and it is currently the most important wood engineering product in China. One, due to its excellent physical and mechanical properties, it has broad application prospect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/00B27N3/08B27N1/00B27N3/18
Inventor 钟永武国芳任海青罗翔亚黄成建
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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