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Wood adhesive active filler and using method thereof

A technology of wood adhesive and active filler, which is applied in the fields of agricultural and forestry waste utilization and wood industry, can solve problems such as the decline of water resistance of gluing, and achieve the effects of improving gluing strength, reducing formaldehyde emission and abundant sources.

Active Publication Date: 2013-08-21
北京光纪国际生物科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, flour only plays a role in increasing the viscosity and filling of the adhesive, and adding too much will cause the problem of a sharp drop in the water resistance of the glue.

Method used

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  • Wood adhesive active filler and using method thereof
  • Wood adhesive active filler and using method thereof
  • Wood adhesive active filler and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 100 grams of urea-formaldehyde resin (F / U=1:1.2), add 10 grams of peanut shell powder (500 mesh), 2 grams of carboxymethyl cellulose, stir well, and press plywood 1-1;

[0019] Take 100 grams of the same urea-formaldehyde resin, add 12 grams of flour, stir well, and press plywood 1-2;

[0020] Sample material: poplar veneer;

[0021] Model specification: 400mm×400mm×2.1mm;

[0022] Moisture content: 12%;

[0023] Glue amount (including additives): 280g / m 2 ;

[0024] Preload pressure: 8-10Kg / cm 2 ;

[0025] Preloading time: 30min;

[0026] Hot pressing temperature: 90-100°C;

[0027] Hot pressing pressure: 10-12Kg / cm 2 ;

[0028] Hot pressing time: 1min / mm.

[0029] According to the method in GB / T17657-1999 "Test methods for physical and chemical properties of wood-based panels and decorative wood-based panels", the bonding strength and formaldehyde emission were tested, and the results are as follows:

[0030]

[0031] The pre-press performance evalu...

Embodiment 2

[0033] Take 100 grams of urea-formaldehyde resin (F / U=1:1.7), add 15 grams of eucalyptus bark powder (500 mesh), 2 grams of carboxymethyl cellulose, stir well, and press plywood 2-1;

[0034] Take 100 grams of the same urea-formaldehyde resin, add 20 grams of flour, stir well, and press plywood 2-2;

[0035] Sample material: poplar veneer;

[0036] Model specification: 400mm×400mm×2.1mm;

[0037] Moisture content: 12%;

[0038] Glue amount (including additives): 280g / m 2 ;

[0039] Preload pressure: 8-10Kg / cm 2 ;

[0040] Preloading time: 30min;

[0041] Hot pressing temperature: 90-100°C;

[0042] Hot pressing pressure: 10-12Kg / cm 2 ;

[0043] Hot pressing time: 1min / mm.

[0044] According to the method in GB / T17657-1999 "Test methods for physical and chemical properties of wood-based panels and decorative wood-based panels", the bonding strength and formaldehyde emission were tested, and the results are as follows:

[0045]

Embodiment 3

[0047] Get 100 grams of modified urea-formaldehyde resin (F / U=1: 1.8, melamine consumption 8%), add 8 grams of Camellia oleifera shell powder (500 orders), 8 grams of pine bark powder, 5 grams of modified starch, stir well, and press plywood 3 -1;

[0048] Take 100 grams of the same urea-formaldehyde resin, add 20 grams of flour, stir well, and press plywood 3-2;

[0049] Sample material: poplar veneer;

[0050] Model specification: 400mm×400mm×2.1mm;

[0051] Moisture content: 12%;

[0052] Glue amount (including additives): 280g / m 2 ;

[0053] Preload pressure: 8-10Kg / cm 2 ;

[0054] Preloading time: 30min;

[0055] Hot pressing temperature: 90-100°C;

[0056] Hot pressing pressure: 10-12Kg / cm 2 ;

[0057] Hot pressing time: 1min / mm.

[0058] According to the method in GB / T17657-1999 "Test methods for physical and chemical properties of wood-based panels and decorative wood-based panels", the bonding strength and formaldehyde emission were tested, and the results ...

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Abstract

The invention discloses a wood adhesive active filler. The wood adhesive active filler is formed by mixing a component (A) and / or a component (B). The component (A) is ultrafine powder which is prepared from fruits or seed shells which are rich in lignin, and comprises one or a mixture of the ultrafine powder of peanut shells, oil tea shells, walnut shells, almond shells, hawthorn shells, nut shells, pine nut shells and cottonseed shells. The component (B) comprises one or a mixture of ultrafine powder of larch barks, eucalyptus barks, black wattles, red bayberry barks and peach barks. The wood adhesive active filler has the advantages that agriculture and forestry processing residues are low in cost and are rich; the wood adhesive active filler replaces a great amount of flour and bean flour used in the artificial board industry, so that the situation of grain tension can be relieved; a new purpose is created for the agriculture and forestry processing residues, and the utilization value of the agriculture and forestry processing residues is increased; and a novel high-quality active additive is provided for the plywood industry, the formaldehyde release amount of a plywood can be decreased, and further the bonding strength of the plywood can be remarkably improved.

Description

technical field [0001] The invention relates to an active filler for wood adhesives and a method for using the same. The active filler includes three components including agricultural and forestry processing residues. The utility model belongs to the field of agricultural and forestry waste utilization and wood industry technology. Background technique [0002] At present, the filler used for urea-formaldehyde resin and phenolic resin in my country is mainly flour, with an annual consumption of more than 1 million tons, which is equivalent to the rations of 3 million people for one year. However, flour only plays the role of thickening and filling the adhesive, and excessive addition will cause the problem of a sharp drop in the water resistance of the glue. With the development of the economy and the progress of social civilization, people have put forward higher requirements for environmental safety. In the field of wood processing, it is mainly reflected in improving th...

Claims

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Application Information

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IPC IPC(8): C09J11/08C09J11/04C09J161/24C09J161/32C09J161/06C09J161/14C09J161/28
Inventor 孙丰文董云丹于佳琼
Owner 北京光纪国际生物科技服务有限公司
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