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Solid wood acoustical board and manufacturing method thereof

A technology of sound-absorbing panels and solid wood, applied in the field of sound-absorbing materials, can solve the problems of unfavorable environmental protection, limited use, poor sound-absorbing effect, adhesives, etc., and achieve the effect of increasing the use value

Active Publication Date: 2015-04-08
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

Artificial forests and fast-growing forests are one of the main ways to alleviate the contradiction between timber supply and demand, but due to the small diameter, loose material and low strength of fast-growing timber, the use is greatly restricted
[0005] Therefore, it is necessary to develop a method for making solid wood sound-absorbing panels by using fast-growing wood, which not only broadens the application of fast-growing wood, but more importantly, solves the problem of poor sound-absorbing effect on medium and high frequencies in the prior art, and more adhesives are used. Conducive to environmental protection and other technical issues

Method used

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  • Solid wood acoustical board and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Production of solid wood sound-absorbing panels

[0034] Set the density to 0.6g / cm 3 The following fast-growing materials, such as poplar, are cut into rectangular strips, bonded radially, and then cut from the end to form multi-section wooden squares; the wooden squares are bonded to form solid wood sound-absorbing panels. The joints are glued with a room temperature curing adhesive, such as white latex.

Embodiment 2

[0035] Embodiment 2: the making of a kind of poplar sound-absorbing board

[0036] The poplar produced in Hebei (origin) is selected, and its air-dry density is 0.35g / cm 3 , with a moisture content of 10%, as the solid wood material of the sound-absorbing panel, the specific production steps of the poplar sound-absorbing panel are as follows:

[0037] 1) After the poplar wood is cut into cuboid blocks, they are bonded radially, and then cut along the cross-section from the end to form multi-section poplar wood blocks after cutting;

[0038] 2) Place the squares of poplar trees along their cross-sections towards the outer surface of the poplar sound-absorbing board, and glue the fast-growing wood squares with white latex to obtain the solid wood sound-absorbing board. The outer surface of the sound-absorbing panel obtained in this way is composed of the cross-section of wood, and because the cross-section of wood has a porous structure, the sound-absorbing performance of the s...

Embodiment 3

[0040] Example 3: Production of a Chinese fir sound-absorbing panel

[0041] Choose fir from Sichuan (place of origin), with an air-dry density of 0.38g / cm 3 , with a moisture content of 10%. As the solid wood material of the sound-absorbing panel, the same manufacturing steps as in Example 2 were used, except that isocyanate was used as the adhesive to make a Chinese fir sound-absorbing panel.

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Abstract

The invention relates to a solid wood acoustical board. The solid wood acoustical board comprises fast growing wood battens and an adhesive for adhering the fast growing wood battens. The air-dry density of fast growing wood is below 0.6g / cm3. The solid wood acoustical board is characterized by being porous, and good sound-absorbing effect on medium-high frequency sound waves can be achieved without needing to manually open a hole or groove on the board. Not only are production processes and cost reduced, but also the board made of the fast growing wood with the air-dry density below 0.6g / cm3 has the advantages of being light and wide in applied fields.

Description

technical field [0001] The invention relates to a sound-absorbing material, in particular to a solid wood sound-absorbing board and a manufacturing method thereof. Background technique [0002] The sound-absorbing effect of porous sound-absorbing materials is mainly due to the fact that the porous material has countless fine pores inside, and the pores communicate with each other and communicate with the outside world through the surface. Into the interior of the material and propagate forward. In order to make the porous material have the best sound absorption effect, the porous sound-absorbing material usually has the following structural characteristics (1) There are a large number of micropores or gaps inside the material, and the pores are small and evenly distributed inside the material; (2) The micropores inside the material The pores are interconnected, and individual air bubbles and closed gaps do not absorb sound; (3) The micropores are open to the outside, making...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10K11/00B27D1/04E04B1/86
Inventor 彭立民王东傅峰陆军梁善庆王军锋陈志林林兰英
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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