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High-strength poplar laminated veneer lumber and manufacturing method thereof

A technology of poplar veneer and manufacturing method, which is applied in the direction of wood layered products, bonding of wooden veneers, manufacturing tools, etc., to achieve the effects of improving bonding strength, improving mechanical properties, and shortening hot-pressing cycle

Inactive Publication Date: 2014-12-10
GUANGZHOU HOMEBON WOOD MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, there is currently no technical disclosure of using glass fiber materials and carbon fiber materials to reinforce poplar laminated veneer lumber and obtaining higher strength poplar laminated veneer lumber and its manufacturing method by improving the hot pressing process

Method used

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  • High-strength poplar laminated veneer lumber and manufacturing method thereof
  • High-strength poplar laminated veneer lumber and manufacturing method thereof
  • High-strength poplar laminated veneer lumber and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] A high-strength poplar veneer laminated lumber is reinforced by adding a layer of glass fiber cloth and a layer of carbon fiber cloth between any two layers of poplar veneer. Its structure is composed of poplar veneer 1 and glass fiber cloth 2 and carbon fiber cloth 3 are sequentially laminated and glued together; the thickness of the poplar veneer is 3.2 mm, the thickness of the glass fiber cloth is 0.1 mm, and the thickness of the carbon fiber cloth is 0.111 mm. A water-soluble phenolic resin adhesive is bonded between the poplar veneer layer and the glass fiber cloth and the carbon fiber cloth.

Embodiment 2

[0033] A high-strength poplar veneer laminated lumber is reinforced by adding a layer of glass fiber cloth and a layer of carbon fiber cloth between any two layers of poplar veneer. Its structure is composed of poplar veneer 1 and glass fiber cloth 2 and carbon fiber cloth 3 are sequentially laminated and glued; the thickness of the poplar veneer is 2 mm, the thickness of the glass fiber cloth is 0.1 mm, and the thickness of the carbon fiber cloth is 0.111 mm. A water-soluble phenolic resin adhesive is bonded between the poplar veneer layer and the glass fiber cloth and the carbon fiber cloth.

Embodiment 3

[0035] A method for manufacturing high-strength poplar laminated veneer lumber, comprising:

[0036] 1. Raw material preparation: Use rotary-cut poplar veneer with a moisture content of 6% to 8%, with a thickness of 3.2mm, and E-GLASS alkali-free glass fiber cloth produced by Changzhou Hualike New Material Co., Ltd., with a thickness of 0.1mm. mm, choose PAN-based carbon fiber cloth produced by Changzhou Hualike New Material Co., Ltd., with a thickness of 0.111mm;

[0037] 2. Fiber cloth impregnation: impregnate the glass fiber cloth and carbon fiber cloth in the water-soluble phenolic resin adhesive, take it out after about 15 minutes and dry it or dry it until it is not sticky;

[0038] 3. Veneer glue coating: use water-soluble phenolic resin adhesive to glue the poplar veneer, and the amount of glue on one side is 120-160g / m 2 ;

[0039] 4. Blank assembly: The glued poplar veneer is assembled along the grain, and a layer of glass fiber cloth and a layer of carbon fiber cl...

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Abstract

The invention belongs to the technical field of wood processing and relates to a high-strength poplar laminated veneer lumber and a manufacturing method thereof. The high-strength poplar laminated veneer lumber is structurally formed by sequentially laminating and gluing poplar veneers, glass fiber cloth and carbon fiber cloth, the glass fiber cloth is arranged above the carbon fiber cloth, and the poplar veneers are arranged at the top and the bottom. The manufacturing method of the high-strength poplar laminated veneer lumber includes: preparation of poplar veneers, impregnation of the fiber cloth, gluing of the poplar veneers, assembly along textures, adding of the fiber cloth, staged hot pressing, cooling and reconditioning. By means of enhancement function of the two types of fiber cloth, strength of the laminated veneer lumber is improved, weather resistance is improved evidently, and the laminated veneer lumber is more stable in size. By adoption of staged hot pressing technique for twice staged hot pressing of the laminated veneer lumber, hot pressing period is shortened, productivity is improved, and improvement of mechanical property of the laminated veneer lumber is facilitated due to secondary hot pressing among part of layers.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and relates to a method for manufacturing laminated lumber, in particular to a high-strength poplar veneer laminated lumber and a manufacturing method thereof. Background technique [0002] As one of the four major materials in the world today, wood is widely used in many fields such as construction, transportation, industry, and agriculture. In the field of construction, engineered wood composite materials are most widely used as building trusses, I-beams and other components. However, my country's natural forest resources are scarce, and the per capita forest stock volume is extremely low. With the implementation of natural forest protection projects and the vigorous development of the construction industry, the contradiction between the supply and demand of construction timber in my country has become increasingly prominent. However, due to the short growth cycle of fast-growing poplar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/00B27D1/08B32B21/10B32B5/26B32B37/06B32B37/10B32B37/12
Inventor 夏朝彦郑敏陈庆庆郭晓磊
Owner GUANGZHOU HOMEBON WOOD MFG
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