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Preparation method for steel wire mesh enhanced laminated veneer lumber based on target mechanical property

A technology of laminated veneer lumber and target mechanics, which is applied in the jointing of wooden veneers, manufacturing tools, wood processing appliances, etc. Stiffness requirements and other issues

Inactive Publication Date: 2016-05-25
NANJING FORESTRY UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low strength of fast-growing wood itself, the strength of domestic LVL is very low
In addition, my country's "Laminated Veneer Lumber" GBT20241-2006 national standard describes the physical properties of laminated lumber very vaguely, and it is impossible to directly determine the physical properties of the selected material according to the standard. Laminated Lumber Panel Products
It can be seen that the strength and stiffness requirements of structural materials cannot be met.

Method used

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  • Preparation method for steel wire mesh enhanced laminated veneer lumber based on target mechanical property
  • Preparation method for steel wire mesh enhanced laminated veneer lumber based on target mechanical property
  • Preparation method for steel wire mesh enhanced laminated veneer lumber based on target mechanical property

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Embodiment Construction

[0027] A method for preparing a steel mesh reinforced laminated veneer lumber based on target mechanical properties, comprising the following steps:

[0028] 1) Remove the branches, leaves, bark, broken material, soften, and rotary cut the felled adult fast-growing wood into veneers (the thickness t of the veneer is specified as: 1.5mm≤t≤5.0mm), and dry it at a constant temperature to make it contain water rate reaches the predetermined standard (not greater than 12%);

[0029] 2) Use digital imaging technology to stack the dried veneers in grades according to the wood grade classification standards. The wood grade standards are shown in Table 1:

[0030] Table 1 Material standards for visual classification of load-bearing structural plates

[0031]

[0032] 3) According to the target mechanical properties of the end product, tensile, compressive, bending, shear strength values ​​along the grain, and modulus of elasticity along the grain, through numerical tests and refine...

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Abstract

The invention discloses a preparation method for steel wire mesh enhanced laminated veneer lumber (LVL) based on target mechanical property. The preparation method comprises the following steps: 1) raw material treatment; 2) wood classification stacking; 3) determination of steel content and laying position of enhanced LVL; 4) layer spreading geometric design; 5) adhesive selection; 6) gumming; 7) product examination. The preparation method has the benefits that (1) controllability and designability of high-strength laminated veneer lumber production can be achieved; (2) the high-strength laminated veneer lumber structural material which can meet the target mechanical property of various engineering structures can be produced; (3) the green and reproducible engineering structural material can be developed so as to relieve environment and resource pressure.

Description

technical field [0001] What the present invention relates to is a kind of based on target mechanical property that is applicable to various engineering structural materials [0002] Steel mesh reinforced laminated veneer lumber preparation method. It belongs to the field of engineering structure materials. Background technique [0003] Laminated Veneer Lumber (Laminated Veneer Lumber), referred to as LVL, mainly uses small-diameter logs as raw materials. The logs are sawn off, rotary cut into veneers for drying, and the dried veneers are spliced ​​and glued, and then hot-pressed And become a multi-layer board. Laminated veneer lumber has greatly improved the comprehensive utilization of wood, and its special production process also enables the board to retain the natural characteristics of wood, and can effectively control the moisture content of the board, avoiding dry cracking and twisting of the board, and at the same time The defects such as knots and cracks that redu...

Claims

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Application Information

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IPC IPC(8): B27D1/00
CPCB27D1/00
Inventor 周爱萍黄东梅黄子睿吴敏达赵爱红
Owner NANJING FORESTRY UNIV
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