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Composite formaldehyde catching agent and preparation method thereof, artificial board formaldehyde removal method and artificial board

A formaldehyde capture agent and wood-based panel technology, applied in the field of formaldehyde removal from boards, can solve the problems of limited amount of formaldehyde capture, difficult formaldehyde, and easy re-adsorption inside the core board or on the veneer material, so as to avoid pollution and harm the users The effect of causing damage

Active Publication Date: 2020-08-07
成都市美康三杉木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the process of processing wood-based panels, formaldehyde and VOC are usually removed by heating to release formaldehyde and VOC from the wood-based panels and then adsorb or decompose them to remove them. After formaldehyde escapes from the adhesive, it will pass through the core board or veneer materials and then release. In the air, during this process, formaldehyde is easily adsorbed inside the core board or on the veneer material again, making it difficult to capture and remove formaldehyde, so that after the processing is completed, there will still be some formaldehyde and VOC that have not been released. Wood-based panels will continue to release formaldehyde and VOC during use, which will cause serious harm to users
[0004] In the prior art, there is a method of capturing and removing the formaldehyde released by the adhesive by using a formaldehyde scavenger mixed in the adhesive, so that the formaldehyde can be removed directly after escaping, without further processing of the core board and veneer materials, and formaldehyde can be avoided. Adsorption on the core board and veneer materials; but the formaldehyde capture agent mixed in the adhesive will reduce the bonding strength of the adhesive, and the amount of formaldehyde capture is limited

Method used

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  • Composite formaldehyde catching agent and preparation method thereof, artificial board formaldehyde removal method and artificial board

Examples

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Effect test

Embodiment 1

[0042] The present embodiment provides a composite formaldehyde trapping agent, comprising the following components in weight percentage: 8% of IRMOFS material, 3% of modified starch, 0.5% of fluorinated polyether, 2% of xanthan gum, 6% of ethylene urea and Epoxy fatty acid methyl ester 3%, the rest is deionized water.

[0043] This embodiment also provides a method for removing aldehydes from wood-based panels, which includes the following steps: mixing the adhesive and the composite formaldehyde scavenger at a weight ratio of 5:1 to prepare a mixed adhesive; placing the veneer paper in the mixed adhesive Soaking; heat-press the veneer paper soaked with the mixed adhesive on the outer surface of the core board to make a veneer wood-based panel; heat the veneer wood-based panel to 100°C and keep it for 4 hours.

[0044] The above-mentioned composite purifying agent comprises the following components in weight percent: 2% of nano-zinc oxide, 1% of nano-titanium dioxide, 5% of nan...

Embodiment 2

[0047] The present embodiment provides a composite formaldehyde trapping agent, comprising the following components in percentage by weight: 15% of PCN material, 6% of modified starch, 2% of fluorinated polyether, 5% of xanthan gum, 12% of ethylene urea and Epoxy fatty acid methyl ester 8%, the rest is deionized water.

[0048] This embodiment also provides a method for removing aldehydes from wood-based panels, which includes the following steps: mixing the adhesive and the composite formaldehyde scavenger at a weight ratio of 5:2 to prepare a mixed adhesive; dipping the core board and the veneer paper into composite formaldehyde scavenger for 25 minutes, and dried to obtain the treatment core board and the treatment veneer paper; the treatment veneer paper is placed in the mixed adhesive for soaking; the treatment veneer paper soaked in the mixed adhesive is hot pressed on the outer surface of the treatment core On the surface, the veneer wood-based panel is made; heat the v...

Embodiment 3

[0052] The present embodiment provides a kind of composite formaldehyde trapping agent, comprises the component of following percentage by weight: ZIF material 10%, modified starch 4%, fluorinated polyether 1%, xanthan gum 3%, ethylene urea 8% and Epoxy fatty acid methyl ester 5%, the rest is deionized water.

[0053] This embodiment also provides a method for removing aldehydes from wood-based panels, comprising the following steps: mixing the adhesive and the composite formaldehyde scavenger at a weight ratio of 5:3 to prepare a mixed adhesive; placing the veneer paper in the mixed adhesive Soaking; heat-press the veneer paper soaked with the mixed adhesive on the outer surface of the core board to obtain a veneer wood-based panel; heat the veneer wood-based panel to 110°C and keep it for 3 hours; heat-treated veneer wood-based panel The surface is evenly sprayed with a composite purifier, and then irradiated with ultraviolet light for 36 hours.

[0054] The above-mentioned...

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PUM

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Abstract

The invention relates to the technical field of formaldehyde removal of boards, and discloses a composite formaldehyde catching agent which comprises the following components: MOFs, modified starch, fluorinated polyether, xanthan gum, ethylene urea, epoxy fatty acid methyl ester and deionized water. The invention also provides a preparation method of the composite formaldehyde catching agent. Theinvention further provides an artificial board formaldehyde removing method. The method comprises the steps: mixing an adhesive with the composite formaldehyde catching agent; hot-pressing veneering paper soaked with the mixed adhesive on the surface of a core plate; and carrying out heat treatment of the veneered artificial board. Formaldehyde and VOC released from the artificial board can be continuously adsorbed and removed, the formaldehyde-free artificial board is provided, and formaldehyde pollution and harm to a user are avoided.

Description

technical field [0001] The invention relates to the technical field of formaldehyde removal from boards, in particular to a composite formaldehyde scavenger and a preparation method thereof, a method for removing formaldehyde from wood-based panels, and wood-based panels. Background technique [0002] Formaldehyde, also known as formaldehyde, is a colorless and irritating gas, which has a strong irritating effect on human eyes and nose. Wood-based panels are made of wood or other non-wood plants, which are separated into various unit materials by certain mechanical processing, and then glued with adhesives and other additives to form panels or molded products; now the adhesives generally used in wood-based panel processing are Urea-formaldehyde resin adhesives will slowly release harmful substances such as formaldehyde and VOC after processing. In order to meet environmental protection and health requirements, formaldehyde and VOC must be removed during processing. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/72B01D53/04B27D1/00B32B9/02B32B9/04B32B21/06B32B21/14B32B29/06B32B33/00B32B37/02B32B37/06B32B38/08C09J11/06C09J11/08
CPCB01D53/8668B01D53/04C09J11/08C09J11/06B32B21/14B32B21/06B32B9/02B32B9/042B32B29/06B32B33/00B32B37/02B32B37/06B32B38/08B27D1/00B32B2260/028B32B2260/046B32B2307/758B32B2607/00B01D2257/708B01D2259/804B01D2255/20707B01D2255/20792Y02A50/20
Inventor 张焕兵叶昌海
Owner 成都市美康三杉木业有限公司
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