Method for removing formaldehyde from artificial plate

A technology for removing formaldehyde and wood-based panels, used in wood treatment, wood heating, wood impregnation, etc., can solve problems such as high cost and incomplete removal, and achieve the effects of increasing content, improving hydrophilicity, and increasing acidity

Active Publication Date: 2017-07-04
浦北县美良木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the removal is not complete
The second is to use a formaldehyde-free adhesive, but the cost of this adhesive is higher

Method used

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  • Method for removing formaldehyde from artificial plate

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for removing formaldehyde from wood-based panels, comprising the following steps:

[0023] (1) Place the wood-based panel in a closed space, blow in nitrogen, spray solution A to a humidity of 30%, heat it to 60°C at a heating rate of 10°C / h, and keep it warm for 2 hours. Solution A is amino acid, ethylene glycol Mixed aqueous solution of amine tetraacetic acid, dodecyl glucoside, tea polyphenols, ammonium phosphate and 1,8-cineole, the concentration is 0.1g / L, amino acid, ethylenediaminetetraacetic acid, dodecyl glucoside , tea polyphenols, ammonium phosphate and 1,8-cineole in a mass ratio of 1:1:2:1:2:0.5.

[0024] (2) Dry to a humidity of 10% and keep warm for 1 hour;

[0025] (3) Vacuumize, cool down to 30°C, and keep warm for 2 hours;

[0026] (4) Spray solution B on the wood-based panel, heat up to 40°C at a heating rate of 10°C / h, keep it warm for 0.5 hours, then cool down to 25°C, and dry. Solution B is a mixed aqueous solution of epichlorohydrin mo...

Embodiment 2

[0028] A method for removing formaldehyde from wood-based panels, comprising the following steps:

[0029] (1) Place the wood-based panel in a closed space, ventilate nitrogen, spray solution A to a humidity of 60%, heat it to 70°C at a heating rate of 20°C / h, and keep it warm for 4 hours. Solution A is amino acid, ethylene glycol A mixed aqueous solution of amine tetraacetic acid, dodecyl glucoside, tea polyphenols, ammonium phosphate and 1,8-cineole, the concentration is 1g / L, amino acid, ethylenediaminetetraacetic acid, dodecyl glucoside, The mass ratio of tea polyphenols, ammonium phosphate and 1,8-cineole is 1:3:2:1:2:0.5.

[0030] (2) Dry to a humidity of 15% and keep warm for 2 hours;

[0031] (3) Vacuumize, cool down to 30°C, and keep warm for 5 hours;

[0032] (4) Spray solution B on the wood-based panel, heat up to 50°C at a heating rate of 15°C / h, keep it warm for 2 hours, then cool down to 30°C, and dry. Solution B is a mixed aqueous solution of epichlorohydrin ...

Embodiment 3

[0034] A method for removing formaldehyde from wood-based panels, comprising the following steps:

[0035] (1) Place the wood-based panel in a closed space, ventilate nitrogen, spray solution A to a humidity of 45%, heat to 65°C at a heating rate of 15°C / h, and keep warm for 3 hours. Solution A is amino acid, ethylene glycol Mixed aqueous solution of amine tetraacetic acid, dodecyl glucoside, tea polyphenols, ammonium phosphate and 1,8-cineole, the concentration is 0.5g / L, amino acid, ethylenediaminetetraacetic acid, dodecyl glucoside , tea polyphenols, ammonium phosphate and 1,8-cineole in a mass ratio of 1:2:2:1:2:0.5.

[0036] (2) Dry to a humidity of 125% and keep warm for 1.5 hours;

[0037] (3) Vacuumize, cool down to 30°C, and keep warm for 3 hours;

[0038] (4) Spray solution B on the wood-based panel, heat up to 45°C at a heating rate of 12°C / h, keep it warm for 1 hour, then cool down to 30°C, and dry. Solution B is a mixed aqueous solution of epichlorohydrin modif...

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PUM

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Abstract

The invention provides a method for removing formaldehyde from an artificial plate. The method comprises the following steps: (1) putting the artificial plate in an enclosed space, injecting nitrogen gas, spraying a solution A till the humidity reaches 30-60%, heating to 60-70 DEG C, and carrying out heat preservation for 2-4 h; (2) drying till the humidity reaches 10-15% and carrying out heat preservation for 1-2 h; (3) carrying out vacuum pumping, cooling to 30 DEG C, and carrying out heat preservation for 2-5 h; and (4) spraying a solution B onto the artificial plate, heating to 40-50 DEG C, carrying out heat preservation for 0.5-2 h, cooling to 25-30 DEG C, and drying. The method provided by the invention has the advantages that the removing effect is good; the cost is low; the process is simple; and formaldehyde in linear resin can be removed.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for removing formaldehyde from an artificial board. Background technique [0002] Toxic and harmful substances mainly come from pollutants such as formaldehyde and ammonia released from building decoration materials. Formaldehyde is a highly toxic substance, and it ranks second on the list of priority control of toxic chemicals in my country. Formaldehyde has been identified as carcinogenic and teratogenic shape material by the World Health Organization, also is one of potential strong carcinogen. Long-term exposure to low-dose formaldehyde can cause chronic respiratory diseases, nasopharyngeal cancer, colon cancer, brain tumor, pregnancy syndrome, chromosomal abnormalities in newborns, leukemia, and memory and mental decline in adolescents. Among all contacts, children and pregnant women are particularly sensitive to formaldehyde and are m...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K3/50B27K3/52B27K5/04B27K5/00
CPCB27K3/0228B27K3/50B27K3/52B27K5/001B27K5/04
Inventor 盛秀群
Owner 浦北县美良木业有限公司
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