Wood lacquer for purifying formaldehyde and preparation method thereof

A wood lacquer and formaldehyde technology, used in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of excessive curing speed, consumption of aldehyde-removing groups, difficult film formation, etc. The effect of secondary pollution, simple process flow and good protection function

Active Publication Date: 2014-07-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the effect of using nano-catalytic materials to degrade formaldehyde has been confirmed in the laboratory, on the one hand, the nano-particles are easy to agglomerate, which weakens the catalytic effect; It affects the light transmittance of the paint film, so the coatings that only use nano-photocatalytic substances such as nano-titanium dioxide as aldehyde-removing materials are mainly solid-color paints (Huang Hongting, CN101831223A) and interior wall coatings (Dong Wendou, CN102051123A)
There is another shortcoming of using photocatalytic materials to purify formaldehyde, that is, the condition for the formation of oxidative electron holes by nano-titanium dioxide is the irradiation of ultraviolet light, even natural light also contains ultraviolet light, but the indoor light is not sufficient, and ultraviolet light is exposed for a long time It has adverse effects on the human body and furniture. Therefore, the promotion and use of wood lacquers that use photocatalytic materials such as nano-titanium dioxide to remove aldehydes is still debatable.
[0008] Some water-soluble aldehyde-removing materials, such as using the active hydrogen on the hydrazide to react with formaldehyde (such as

Method used

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  • Wood lacquer for purifying formaldehyde and preparation method thereof
  • Wood lacquer for purifying formaldehyde and preparation method thereof
  • Wood lacquer for purifying formaldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0056] Example 1

[0057] In parts by mass, the wood lacquer that purifies formaldehyde is formulated according to the following composition:

[0058] Preparation of component A:

[0059]

[0060]

[0061] 1) Under the protection of nitrogen, put YTM3970 fatty acid modified quick-drying alkyd resin, ethanol and ethylene glycol in proportion into the reactor, stir evenly, and heat to 75°C;

[0062] 2) Add n-butyl acetate, cyclohexanone, organic bentonite, fumed silica, nano aluminum oxide, dibutyl tin dilaurate, polyethylene wax powder, chlorinated paraffin powder, phloroglucinol, and hyperbranched sequentially. Polyamide-amine, continue to stir, keep the temperature at 70 ℃ for 15 minutes to complete the reaction;

[0063] 3) After returning to room temperature, the material is discharged, and component A is obtained. Store in a cool place sealed and protected from light.

[0064] Preparation of component B:

[0065]

[0066] Preparation steps: 1) Under the protection of nitrogen, put n-...

Example Embodiment

[0068] Example 2

[0069] In parts by mass, the wood lacquer that purifies formaldehyde is formulated according to the following composition:

[0070] Preparation of component A:

[0071]

[0072]

[0073] 1) Under the protection of nitrogen, put YTM3680 synthetic fatty acid resin, methanol and ethanol in proportion into the reactor, stir evenly, and heat to 50℃;

[0074] 2) Add n-butyl acetate, ethyl acetate, organic bentonite, fumed silica, nano aluminum oxide, zinc stearate, dibutyl tin dilaurate, calcium naphthenate, polyethylene wax powder, chlorinated Paraffin wax powder, urea, 2-imidazolidinone, barbituric acid, acetylacetone, phloroglucinol, terpineol, continue to stir, keep the temperature at 40 ℃ and react for 60 minutes to complete the reaction;

[0075] 3) After returning to room temperature, the material is discharged, and component A is obtained. Store in a cool place sealed and protected from light.

[0076] Preparation of component B:

[0077]

[0078] Preparation steps: ...

Example Embodiment

[0080] Example 3

[0081] In parts by mass, the wood lacquer that purifies formaldehyde is formulated according to the following composition:

[0082] Preparation of component A:

[0083]

[0084] 1) Under the protection of nitrogen, put YTM3170 coconut oleic acid modified short oil alkyd resin and methanol, ethanol, 1,4-butanediol in proportion into the reactor, stir evenly, and heat to 62.5℃;

[0085] 2) Add n-butyl acetate, ethyl acetate, organic bentonite, talc, nano aluminum oxide, zinc stearate, dibutyl tin dilaurate, zinc naphthenate, oxidized polyethylene wax powder, and chlorinated paraffin in sequence. Micropowder, polyamide-amine, 2-imidazolidinone, phloroglucinol, amide-modified castor oil, continue to stir, keep the temperature at 55℃ and react for 37.5 minutes to complete the reaction;

[0086] 3) After returning to room temperature, the material is discharged, and component A is obtained. Store in a cool place sealed and protected from light.

[0087] Preparation of compo...

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Abstract

The invention discloses wood lacquer for purifying formaldehyde and a preparation method thereof. The wood lacquer is prepared by mixing a component A with a component B in a mass ratio of (1:0.25)-(1:0.5), and then stirring the mixture uniformly, wherein the component A is prepared by putting alkyd resin and alcohol solvents into a reaction kettle under the protection of nitrogen, stirring the materials uniformly and heating the materials to 50-75 DEG C, adding first diluents, fillers, driers, wax powder, formaldehyde removal agents and an anti-settling agent in sequence, continuing stirring, maintaining the temperature at 40-70 DEG C and reacting for 15-60 minutes, and discharging the material after returning to the room temperature; the component B is prepared by putting second diluents into the reaction kettle under the protection of nitrogen, stirring and insulating the materials, putting curing agents, a levelling agent and a defoaming agent into the reaction kettle, insulating and stirring the materials, and discharging the material after returning to the room temperature. The wood lacquer has high formaldehyde removal efficiency and good durability, dispenses with recoating films, and is convenient to use.

Description

Technical field [0001] The invention relates to a wood lacquer, in particular to a wood lacquer with the effect of removing formaldehyde and a preparation method thereof; it belongs to the field of air pollutant purification. Background technique [0002] Formaldehyde is a flammable, highly active, irritating, colorless and toxic gas at room temperature. Most of the damage to the human body is exogenous formaldehyde. Exogenous formaldehyde can be roughly divided into two categories, one is formaldehyde when it comes into contact with humans, and the other is formaldehyde that is metabolized by the body when it comes into contact with humans, such as methanol and methylamine. Common sources of formaldehyde are: construction and decoration materials, such as wood panels (particle board, blockboard, plywood, medium density fiberboard, large core board, etc.), wood adhesives, decorative materials (wallpapers, etc.) that may emit formaldehyde, and furnishings (Chemical fiber carpets...

Claims

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Application Information

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IPC IPC(8): C09D167/08C09D175/06C09D175/14C09D7/12C09D5/00
Inventor 张心亚何贲健谢德龙
Owner SOUTH CHINA UNIV OF TECH
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