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Formaldehyde scavenging agent for artificial board and use method of formaldehyde scavenging agent

A formaldehyde scavenger, wood-based panel technology, applied in the direction of protection devices against harmful chemicals, etc., can solve the problems of poor timeliness, low free formaldehyde removal rate, low quality wood-based panel products, etc., to suppress overflow and improve removal rate. And the effect of timeliness and simplicity of use

Inactive Publication Date: 2015-03-04
CHENGDU SHUNFA DISINFECTANT & WASHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention is realized through the following technical scheme: a formaldehyde scavenger for wood-based panels, which overcomes the problems caused by the low removal rate of free formaldehyde, poor timeliness and serious secondary pollution of some existing formaldehyde scavenger products. A series of defects of low-quality wood-based board products. In the present invention, the formaldehyde scavenger is added 10-40 parts of ethylene urea, 20-30 parts of film-forming agent, 0.1-60 parts of solvent, respectively. 10 parts of penetrating agent and 0.1-10 parts of accelerator, the solvent is water or organic solvent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The invention proposes a formaldehyde scavenger for wood-based panels and a method for using the formaldehyde scavenger. The formaldehyde scavenger is a film-forming material that covers the surface of wood-based panels by brushing, spraying or rolling. membrane to prevent the overflow of free formaldehyde, and its active ingredient ethylene urea can also enter the interior of the wood-based panel under the action of the penetrating agent, react with the free formaldehyde in it, and achieve the purpose of eliminating free formaldehyde in the wood-based panel, of course, for To better realize the present invention, in the actual use process, an accelerator is also added in the formaldehyde scavenger, and its purpose is to: play a catalytic role when ethylene urea and free formaldehyde react, and can effectively improve the concentration of free formaldehyde. Elimination rate, proved by practice, its use effect is good.

[0027] By weight percentage, the formaldehyde scav...

Embodiment 2

[0045] By weight percentage, the formaldehyde scavenger involved in the present embodiment comprises the following components:

[0046] Ethylene urea: 40 parts;

[0047] Film-forming agent: 30 parts, polyvinyl alcohol film-forming agent can be used;

[0048] Penetrant: 0.1 part, JFC-1 penetrant can be used;

[0049] Accelerator: 10 parts, a mixture of calcium sulfate and magnesium chloride can be used, the mass ratio of calcium sulfate: magnesium chloride is 1:1;

[0050] Water: 19.9 parts.

[0051] The preparation process of above-mentioned formaldehyde scavenger is as follows:

[0052] (1) First, prepare ethylene urea with appropriate proportions of ethylenediamine, urea, and water:

[0053] Add ethylenediamine, urea, and water with a molar ratio of 1.5:1:0.5 into the reactor respectively, heat and stir at 240°C, and control the reaction time to 4h. After obtaining ethylene urea paste, continue Heat and stir, after the ethylene urea paste dissolves, cool down to 180°C, ...

Embodiment 3

[0063] By weight percentage, the formaldehyde scavenger involved in the present embodiment comprises the following components:

[0064] Ethylene urea: 30 parts;

[0065] Film-forming agent: 25 parts, sodium alginate film-forming agent can be used;

[0066] Penetrant: 5 parts, JFC-E penetrant can be used;

[0067] Accelerator: 5 parts, a mixture of magnesium sulfate, calcium sulfate and calcium chloride can be used, wherein the mass ratio of magnesium sulfate: calcium sulfate: calcium chloride is 1:1:0.5;

[0068] Water: 35 parts.

[0069] The preparation process of above-mentioned formaldehyde scavenger is as follows:

[0070] (1) First, prepare ethylene urea with appropriate proportions of ethylenediamine, urea, and water:

[0071] Add ethylenediamine, urea, and water with a molar ratio of 1.5:1:0.5 into the reactor respectively, heat and stir at 180°C, and control the reaction time to 3.5h. After obtaining the ethylene urea paste, Continue heating and stirring. After th...

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Abstract

The invention discloses a formaldehyde scavenging agent for an artificial board and a use method of the formaldehyde scavenging agent. The formaldehyde scavenging agent is obtained by respectively adding 10-40 parts of ethylene urea, 20-30 parts of a film forming agent, 0.1-10 parts of a penetrating agent and 0.1-10 parts of an accelerant into 15-60 parts of solvent, wherein the solvent is water or an organic solvent. The use method comprises the following step of covering the surface layer of the artificial board with the formaldehyde scavenging agent by adopting a brushing, spraying or roll-coating mode. The formaldehyde scavenging agent disclosed by the invention has the advantages that the design is reasonable, the ethylene urea is used for scavenging effective components of free formaldehyde in the artificial board, so that not only can the elimination of the free formaldehyde in the artificial board be realized, but also overflowing of the free formaldehyde can be blocked; and the formaldehyde scavenging agent has the characteristics of high elimination rate, strong timeliness and no secondary pollution and the like and has large social benefit.

Description

technical field [0001] The invention belongs to the field of formaldehyde removal, in particular to a formaldehyde scavenger for wood-based panels and its application method. Background technique [0002] Wood-based panels are an important component of existing decorative materials. During its production and application, the amount of formaldehyde released has become an increasingly concerned issue. As we all know, it is necessary to add formaldehyde-containing glue in the process of manufacturing wood-based panels. Moreover, according to statistics, more than 90 parts of domestic wood-based panels are pressed with urea-formaldehyde glue, so free formaldehyde will be produced during application, and it will often cause certain harm to the human body when used in furniture manufacturing or other board applications. Impact. In the actual application process, the reasons for the generation of free formaldehyde include the following aspects: [0003] (1) Free formaldehyde rema...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/30A62D101/28
CPCA62D3/30A62D2101/28
Inventor 梁宗贵
Owner CHENGDU SHUNFA DISINFECTANT & WASHING TECH
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