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Formaldehyde scavenging agent for glue artificial board as well as preparation method thereof

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

Inactive Publication Date: 2015-04-01
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 panel products, a formaldehyde scavenger that can form a film on the surface of wood-based panels is proposed, that is: the formaldehyde scavenger is covered on the surface of wood-based panels by brushing, spraying or rolling Film-forming material, by weight percentage, described formaldehyde scavenger comprises:

Method used

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  • Formaldehyde scavenging agent for glue artificial board as well as preparation method thereof
  • Formaldehyde scavenging agent for glue artificial board as well as preparation method thereof
  • Formaldehyde scavenging agent for glue artificial board as well as preparation method thereof

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Embodiment 1

[0032] The invention proposes a formaldehyde scavenger for wood-based panels and a preparation method thereof. The formaldehyde scavenger is a film-forming material that covers the surface of wood-based panels by brushing, spraying or rolling, and can not only form a protective film on the surface of wood-based panels. 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...

Embodiment 2

[0051] By weight percentage, the formaldehyde scavenger involved in the present embodiment comprises the following components:

[0052] Ethylene urea: 40%;

[0053] Film-forming agent: 30%, polyvinyl alcohol film-forming agent can be used;

[0054] Penetrant: 0.1%, JFC-1 penetrant can be used;

[0055] Accelerator: 10%, a mixture of calcium sulfate and magnesium chloride can be used, the mass ratio of calcium sulfate: magnesium chloride is 1:1;

[0056] Solvent water: 19.9%.

[0057] The preparation process of above-mentioned formaldehyde scavenger is as follows:

[0058] (1) First, prepare ethylene urea with appropriate proportions of ethylenediamine, urea, and water:

[0059] 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, then add water t...

Embodiment 3

[0069] By weight percentage, the formaldehyde scavenger involved in the present embodiment comprises the following components:

[0070] Ethylene urea: 30%;

[0071] Film-forming agent: 25%, sodium alginate film-forming agent can be used;

[0072] Penetrant: 5%, JFC-E penetrant can be used;

[0073] Accelerator: 5%, 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;

[0074] Solvent water: 35%.

[0075] The preparation process of above-mentioned formaldehyde scavenger is as follows:

[0076] (1) First, prepare ethylene urea with appropriate proportions of ethylenediamine, urea, and water:

[0077] 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 the ethylene urea p...

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Abstract

The invention discloses a formaldehyde scavenging agent for an artificial board as well as preparation method thereof. The formaldehyde scavenging agent is a film forming material which is smeared, sprayed or rolling-coated on the surface of the urea-formaldehyde glue artificial board. The formaldehyde scavenging agent comprises the following active ingredients in percentage by weight: 10-40% of ethyleneurea, 20-30% of film forming agent, 0.1-10% of a permeating agent, 0.1-10% of an accelerator and 15-60% of solvent water. The preparation steps of the method are simple, the ethyleneurea is an active ingredient for scavenging the free formaldehyde out of the artificial board and can be prepared into the formaldehyde scavenging agent together with ethylenediamine, urea and water through simple operations, other ingredients and water are respectively dissolved. The formaldehyde scavenging agent not only is capable of removing free formaldehyde out of the artificial board, but also capable of effectively preventing the overflowing of free formaldehyde, and the formaldehyde scavenging agent also has the characteristics of removal rate, strong timeliness, no secondary pollution and the like, thus having great social benefits.

Description

technical field [0001] The invention belongs to the field of formaldehyde removal, in particular to a formaldehyde removal agent for wood-based panels and a preparation method thereof. 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% 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...

Claims

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Application Information

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