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Formaldehyde-removing waterborne sealing primer used for artificial board

A technology for sealing primer and removing formaldehyde, which is applied in the treatment of dyed organosilicon compounds, fibrous fillers, dyed polymer organic compounds, etc. problem, to achieve the effect of killing bacteria and mold and improving the indoor air environment

Active Publication Date: 2016-04-13
北京天恒健科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]3. Photocatalyst method, but the photocatalyst needs to be activated by ultraviolet light, and it has no effect at night and without visible light
In fact, photocatalysts have limited effect on removing polluting gases in the air, so developed countries rarely use them as civilian photocatalytic materials
[0007] 4. The plasma method is to generate a large amount of plasma to oxidize the formaldehyde in the air to achieve the purpose of purifying the air. This method is easy to generate ozone and cause secondary pollution to the air, and the device is complicated and consumes a lot of energy.
However, the coating decoration material of the invention still has shortcomings such as photocatalytic materials and secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of formaldehyde remover dispersion: 1. Put 10% nano attapulgite, 10% nano sepiolite powder, and 10% nano anion powder into an oven, dry at 50-60°C for 4 hours, and dry the dried nano composite powder Add the material into the solution dissolved in coupling agent / ethanol, ultrasonically disperse for 1 hour to obtain a pre-dispersion, put the pre-dispersion into a closed container with a reflux condenser and a stirrer, and then raise the temperature of the system to 70-80°C , stirred at a medium speed for 24 hours, discharged, filtered, and vacuum-dried and activated at 80-90°C for 2 hours to obtain a surface-treated nanocomposite powder; 2. Add 45%-50% deionized water to the high-speed disperser, 10% propylene glycol, 12% maleic anhydride styrene polyether ammonium salt copolymer, stir evenly, add the surface-treated nano-composite powder prepared above, disperse at high speed for 25-40 minutes, and turn on the nano-sand mill to grind for 10-12 hours , the me...

Embodiment 2

[0020] Preparation of a formaldehyde-removing water-based sealing primer for wood-based panels: according to the weight ratio of the following raw material formulas, it is uniformly prepared by high-speed dispersion and stirring with a mixer: 25% to 40% of deionized water, 6% to 50% PVB / ethanol solution 15%, formaldehyde remover dispersion 5%~15%, water-based resin or emulsion 30%~70%, film-forming aid 2%~5%, defoamer 0.1%~0.4%, leveling agent 0.2%~0.5% %, thickener 0.2% to 0.5%, PH regulator 0.1% to 0.5%.

[0021] According to relevant national standards, the basic performance of the formaldehyde-removing water-based sealing primer for wood-based panels of the present invention is tested, and the test results are shown in Table 1.

[0022] Table 1 The basic performance test results of formaldehyde-removing water-based sealing primer for wood-based panels

[0023] Test items

[0024] Appearance of paint film

Embodiment 3

[0026] Formaldehyde removal performance test: select 30% nano-TiO2 dispersion and 30% nano-anion dispersion on the market to compare with the example of the present invention for formaldehyde removal rate and purification effect persistence.

[0027] Preparation of comparative sample water-based primer: 30% of deionized water, 55% of styrene-acrylic emulsion, 10% of formaldehyde-removing materials, 5% of various auxiliary agents; the consumption of nano-formaldehyde remover in the examples of the present invention is 10%. According to the standard method of JCT1074-2008 "Purification Performance of Coating Materials with Indoor Air Purification Function", the test results are shown in Table 2 and 3.

[0028] Table 2: Test results of comparative test (with fluorescent lamp irradiation)

[0029] project

[0030] Table 3: Test results of comparative test (no fluorescent lamp irradiation)

[0031] project

[0032] Known by table 2, 3: the formaldehyde-removing...

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Abstract

The invention relates to a formaldehyde-removing waterborne sealing primer used for an artificial board. The sealing primer comprises the following components: waterborne resin or emulsion, PVB resin, a formaldehyde remover, a film-forming auxiliary agent, a defoaming agent, a leveling agent, a thickening agent and water, wherein the formaldehyde remover is a waterborne dispersion prepared by surface modification of nanoscale attapulgite / nanometer sepiolite powder / negative-ion powder. The formaldehyde-removing waterborne sealing primer used for the artificial board provided by the invention has superstrong capability of adsorbing formaldehyde gas, and can continuously and effectively remove a variety of harmful gases and odors like the formaldehyde gas and ammonia gas volatilized from the artificial board; meanwhile, the sealing primer also has the advantages of negative-ion ecology, capability of killing bacteria and mold, no generation of secondary pollution, improvement of an indoor air environment, and extensive application in surface sealing coating of a variety of artificial boards.

Description

technical field [0001] The invention relates to a preparation method of a water-based wood sealing primer, in particular to a formaldehyde-removing water-based sealing primer for wood-based panels, and belongs to the technical field of water-based functional coatings. Background technique [0002] People spend most of their life living and working indoors. The environmental pollution caused by interior decoration has become a social problem, and the phenomenon of human illness, disability and death has become a social problem. The gas has a great impact on the human body and can easily lead to respiratory diseases, cancer, leukemia, and neurological diseases, especially for pregnant women, children, and the elderly. [0003] The formaldehyde in the indoor air mainly comes from the man-made panels used to make furniture, such as: medium density fiberboard, particle board, plywood, and blockboard. The adhesives used in the processing of these materials are urea-formaldehyde re...

Claims

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Application Information

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IPC IPC(8): C09D201/00C09D129/14C09D5/00C09D7/12C09C1/42C09C1/28C09C3/10C09C3/08C09C3/12
Inventor 许钧强康伦国姚东生
Owner 北京天恒健科技发展有限公司
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