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Floor-board with low free formaldehyde release and furniture production method

A technology with low free formaldehyde and production method, applied in the field of formaldehyde removal catalyst, can solve the problems of secondary air pollution, high air pollution, need hundreds to thousands of yuan, unsatisfactory effect, etc., and achieve the effect of eliminating pollution.

Active Publication Date: 2009-11-04
罗文圣 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the cost is high, it costs hundreds to thousands of yuan, and the effect is not ideal; activated carbon and air purifiers are effective when the concentration of formaldehyde in the air is high, and when the formaldehyde in the adsorbent is saturated, it loses its adsorption effect, and when the temperature rises, the formaldehyde It will diffuse into the air again; spraying formaldehyde scavenger or capture agent can remove free formaldehyde in the air in a short period of time, but the formaldehyde release period in wood-based panels is 3 to 15 years, which needs to be sprayed continuously, and it will Cause secondary air pollution; spraying sealing wax can only temporarily delay the release of formaldehyde, once the sealing layer is broken, free formaldehyde will be released concentratedly, causing even greater harm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 9 parts of hydrazine hydrate, 5 parts of acetamide, 25 parts of urea, 3 parts of ammonium dihydrogen phosphate, 7 parts of aluminum sulfate, 0.05 parts of phosphoric acid, 1 part of sodium dodecylbenzenesulfonate in deionized water, add deionized water To a total of 100 parts, heat to 80°C while stirring, keep for 30 minutes, cool to room temperature for later use, hereinafter referred to as formaldehyde removal catalyst FL-1.

[0026] Spray 25g / m on the surface of 8mm thick high-density fiberboard 2 Formaldehyde removal catalyst FL-1; stacking for 24 hours; veneer according to the normal process; the formaldehyde emission of the produced laminate flooring is 0.12mg / L, and the formaldehyde emission after 6 months is 0.09mg / L. The formaldehyde emission of the laminate flooring treated without formaldehyde removal catalyst was 2.3mg / L.

Embodiment 2

[0028] Add 5 parts of formic hydrazide, 5 parts of diethylamine, 8 parts of methyl urea, 4 parts of ammonium sulfate, 6 parts of sodium bisulfite, 0.02 parts of sulfurous acid, and 2 parts of penetrant JFC in deionized water, and add deionized water to The total amount is 100 parts, heated to 50°C while stirring, kept for 30 minutes, cooled to room temperature for later use, hereinafter referred to as formaldehyde removal catalyst FL-2.

[0029] Spray 35g / m on the surface of 8mm thick high-density fiberboard 2 Formaldehyde removal catalyst FL-2; stacking for 1 hour; veneer according to the normal process; the formaldehyde emission of the produced laminate flooring is 0.06mg / L, and the formaldehyde emission after 6 months is 0.07mg / L. The formaldehyde emission of the laminate flooring treated without formaldehyde removal catalyst was 1.7mg / L.

Embodiment 3

[0031]Add 5 parts of methylamine, 5 parts of carbohydrazide, 10 parts of urea, 5 parts of ammonium sulfamate, 5 parts of sodium sulfite, 0.1 part of acetic acid, and 1 part of penetrant JFC in deionized water, and add deionized water until the total amount is 100 parts, heated to 70°C while stirring, kept for 30 minutes, cooled to room temperature for later use, hereinafter referred to as formaldehyde removal catalyst FL-3.

[0032] Spray 15g / m on the surface of 12mm thick solid wood plywood for flooring 2 Formaldehyde removal catalyst FL-3; stacking for 48 hours; paint finishing treatment according to the normal process; the production of solid wood meets the floor formaldehyde emission of 0.02mg / L, and the formaldehyde emission after 6 months is 0.03mg / L. The formaldehyde emission of the laminate flooring treated without formaldehyde removal catalyst was 1.3mg / L.

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Abstract

The invention relates to a production method of floor and furniture with low free formaldehyde emission. The formaldehyde removal catalyst consists of urea and its derivatives, amine and its derivatives, ammonium salt, hydrazine hydrate and its derivatives, salt, acid, penetrating agent and Composition of water; based on 100 parts of formaldehyde removal catalyst, the dosage of urea and its derivatives is 10-30 parts, the dosage of amine and its derivatives is 1-15 parts, the dosage of ammonium salt is 3-20 parts, hydrazine hydrate and The amount of its derivatives is 1-9 parts, the amount of salt is 1-15 parts, the amount of acid is 0.01-2 parts, the amount of penetrant is 0.05-7 parts, and the rest is water; even if E2 or FC2, and The wood-based panels with the above free formaldehyde emission can be treated with this method, without changing the production process of the floor and furniture, so that the free formaldehyde emission in the floor or furniture is ≤0.3mg / L, and the formaldehyde concentration in the indoor air meets the national standards. Regulations on indoor air quality standards.

Description

technical field [0001] The invention relates to a production method of floor and furniture with low free formaldehyde emission and a formaldehyde removal catalyst. Background technique [0002] Laminate flooring, solid wood composite flooring, and furniture are basically made of wood-based panels such as plywood, fiberboard, and particle board. Urea-formaldehyde resin, melamine-formaldehyde resin, and phenolic resin are one of the raw materials for the production of wood-based panels. Part of the free formaldehyde remaining during the curing of the resin, and the free formaldehyde released by the cracking of the resin after curing will continue to be released into the surrounding air, causing formaldehyde pollution in the indoor environment. Indoor air testing by the national quality inspection department shows that the rate of formaldehyde exceeding the standard in newly decorated rooms in Beijing and other large and medium-sized cities is 73.3-100%, and the average concen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/00
Inventor 罗文圣
Owner 罗文圣
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