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A kind of high-strength multi-layer wooden structural material and its manufacturing method

A technology of wood structure and production method, which is applied in wood treatment, wood layered products, wood processing equipment, etc., can solve the problems of low market share, manufacturing standards and insufficient technology, etc., and achieve simple process, high strength and good performance Effect

Active Publication Date: 2019-07-26
贵州剑河园方林业投资开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the past ten years, modern wooden structures have achieved certain development in my country, but affected by factors such as national conditions, the market share of wooden structures is far lower than that of other building systems, and the manufacturing standards and technologies are not perfect.

Method used

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  • A kind of high-strength multi-layer wooden structural material and its manufacturing method
  • A kind of high-strength multi-layer wooden structural material and its manufacturing method
  • A kind of high-strength multi-layer wooden structural material and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Treatment of oriented strand board (OSB): Sanding both sides of OSB, the sanding thickness is 0.2mm, and the OSB after sanding is placed in the health care room to adjust the moisture content, and the moisture content of OSB is adjusted to 8 %, and then the two faces of the OSB are brushed for later use;

[0037] (2) Treatment of cross-laminated lumber (CLT): carry out health-preserving treatment on the prepared CLT, adjust the water content of CLT to 8%, and then, carry out roughening treatment and stress relief groove processing on the surface, so as to facilitate gluing and Improve dimensional stability;

[0038] (3) Apply glue on the treated OSB surface, and control the amount of double-sided glue at 300g / m 2 , the applied adhesive is polyvinyl acetate isocyanate adhesive (EPI);

[0039] (4) The glued OSB and CLT are stacked and paved to form a CLT-OSB-CLT three-layer wooden structural material with a size of 2440*1220*100mm;

[0040] (5) Send the wooden stru...

Embodiment 2

[0043] (1) Treatment of oriented strand board (OSB): sanding both sides of the OSB, the sanding thickness is 0.2mm, and the OSB after sanding is placed in the health care room to adjust the moisture content, and the moisture content of the OSB is adjusted to 6 %, and then the two faces of the OSB are brushed for later use;

[0044] (2) Treatment of cross-laminated lumber (CLT): carry out health-preserving treatment on the prepared CLT, adjust the moisture content of CLT to 6%, and then, carry out roughening treatment and processing of stress relief grooves on the surface to facilitate gluing and Improve dimensional stability;

[0045] (3) Apply glue on the surface of OSB that has been treated, and control the amount of double-sided glue at 280g / m 2 , the applied adhesive is melamine-urea-formaldehyde resin adhesive (MUF), ammonium persulfate is selected as the curing agent, and the addition amount is 5% of the solid content of MUF;

[0046] (4) The glued OSB and CLT are stacke...

Embodiment 3

[0050] (1) Treatment of oriented strand board (OSB): Sanding both sides of OSB, the sanding thickness is 0.2mm, and the OSB after sanding is placed in the health care room to adjust the moisture content, and the moisture content of OSB is adjusted to 8 %, and then the two faces of the OSB are brushed for later use;

[0051] (2) Treatment of cross-laminated lumber (CLT): carry out health-preserving treatment on the prepared CLT, adjust the water content of CLT to 8%, and then, carry out roughening treatment and stress relief groove processing on the surface, so as to facilitate gluing and Improve dimensional stability;

[0052] (3) Apply glue on the treated OSB surface, and control the amount of double-sided glue at 300g / m 2 , the applied adhesive is tannin-resorcinol-glutaraldehyde adhesive (TRG), paraformaldehyde is selected as the curing agent, and the addition amount is 9% of the solid content of TRG.

[0053] (4) The glued OSB and CLT are stacked and paved to form a CLT-...

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Abstract

The invention relates to a high-strength multilayer wooden structure material and a manufacturing method thereof. The high-strength multilayer wooden structure material is formed by sequentially arranging cross laminated timber (CLT) and oriented strand boards (OSBs) in a crossed way, bonding and splicing. The manufacturing method comprises the steps of (1) treating the oriented strand boards; (2) treating the cross laminated wood; (3) gluing; (4) stacking for assembling; (5) cold-pressing. The CLT-OSB- . . . -CLT sandwich type multilayer wooden structure material is formed by splicing the CLT and the OSBs under the bonding effect of environment-friendly wood adhesive; the manufactured wooden structure material is good in performance and high in strength.

Description

technical field [0001] The invention relates to a high-strength multilayer wooden structural material and a manufacturing method thereof, belonging to the technical field of wood processing. Background technique [0002] Oriented strand board OSB (Oriented Strand Board) and cross-laminated timber CLT (Cross Laminated Timber) as two structural materials have been increasingly recognized by consumers. [0003] Studies have shown that due to the vertical and horizontal staggered orthogonal combination of CLT, the material has the same dry shrinkage and wet expansion characteristics in the vertical and horizontal directions, and the overall linear dry shrinkage and wet expansion coefficients are less than 0.05%, and its dimensions are stable. The durability is 12 times that of solid wood and glued wood. At the same time, CLT materials have excellent fire resistance, earthquake resistance and sound insulation properties, and they also have competitive advantages in terms of cost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B21/02B32B21/13B32B7/12C09J161/30C09J161/06C09J131/04C09J11/04C09J11/08B27D1/08B27K5/00
CPCB27D1/08B27K5/00B32B7/12B32B21/02B32B21/13B32B2307/50C09J11/04C09J11/08C09J131/04C09J161/06C09J161/30
Inventor 龙险峰杜官本周晓剑张永权李明
Owner 贵州剑河园方林业投资开发有限公司
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