CN107652815B - Preparation method of indoor latex paint capable of adsorbing and removing formaldehyde - Google Patents
Preparation method of indoor latex paint capable of adsorbing and removing formaldehyde Download PDFInfo
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- CN107652815B CN107652815B CN201710998907.5A CN201710998907A CN107652815B CN 107652815 B CN107652815 B CN 107652815B CN 201710998907 A CN201710998907 A CN 201710998907A CN 107652815 B CN107652815 B CN 107652815B
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 239000003973 paint Substances 0.000 title claims abstract description 62
- 239000004816 latex Substances 0.000 title claims abstract description 55
- 229920000126 latex Polymers 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229920002101 Chitin Polymers 0.000 claims abstract description 55
- 239000004964 aerogel Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract 8
- 238000003756 stirring Methods 0.000 claims description 80
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000008367 deionised water Substances 0.000 claims description 27
- 229910021641 deionized water Inorganic materials 0.000 claims description 27
- 239000000839 emulsion Substances 0.000 claims description 27
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 22
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 22
- 229910021389 graphene Inorganic materials 0.000 claims description 19
- 239000007864 aqueous solution Substances 0.000 claims description 16
- 239000006185 dispersion Substances 0.000 claims description 15
- FPQQSJJWHUJYPU-UHFFFAOYSA-N 3-(dimethylamino)propyliminomethylidene-ethylazanium;chloride Chemical compound Cl.CCN=C=NCCCN(C)C FPQQSJJWHUJYPU-UHFFFAOYSA-N 0.000 claims description 14
- -1 polydimethylsiloxane Polymers 0.000 claims description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 11
- 238000010907 mechanical stirring Methods 0.000 claims description 11
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 11
- 239000004408 titanium dioxide Substances 0.000 claims description 11
- 239000011787 zinc oxide Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000004108 freeze drying Methods 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000000967 suction filtration Methods 0.000 claims description 8
- 238000009210 therapy by ultrasound Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 239000000049 pigment Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 claims description 2
- QBLDFAIABQKINO-UHFFFAOYSA-N barium borate Chemical compound [Ba+2].[O-]B=O.[O-]B=O QBLDFAIABQKINO-UHFFFAOYSA-N 0.000 claims description 2
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims description 2
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims description 2
- 229940112669 cuprous oxide Drugs 0.000 claims description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 2
- 229920001038 ethylene copolymer Polymers 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 12
- 239000000126 substance Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 208000007590 Disorders of Excessive Somnolence Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 208000007443 Neurasthenia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 206010003549 asthenia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 210000000349 chromosome Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 206010020765 hypersomnia Diseases 0.000 description 1
- 125000000879 imine group Chemical group 0.000 description 1
- 230000036737 immune function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000003908 liver function Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004199 lung function Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention belongs to the field of chemical coatings, and particularly relates to a preparation method of indoor latex paint capable of adsorbing and removing formaldehyde. The method specifically comprises the following steps: step 1, preparing chitin modified graphene aerogel; and 2, preparing the indoor latex paint for adsorbing and removing the formaldehyde. The indoor latex paint prepared by the method has the advantages of double functions of physical adsorption and chemical removal, large formaldehyde adsorption capacity, high formaldehyde removal efficiency after adsorption and the like.
Description
Technical Field
The invention belongs to the field of chemical coatings, and particularly relates to a preparation method of indoor latex paint capable of adsorbing and removing formaldehyde.
Technical Field
With the development of social economy and the improvement of the living standard of people, people pay more and more attention to the health of people, and especially have higher and higher environmental protection requirements on the living environment. In interior decoration, artificial boards such as shaving boards and composite boards are often used. The artificial board is prepared by using an adhesive, and the adhesive usually contains unreacted free formaldehyde, which is also a main source of formaldehyde pollution in indoor air.
Formaldehyde is a medium toxic substance and has great harm to human health; the influence is mainly shown in aspects of abnormal smell, stimulation, allergy, abnormal lung function, abnormal liver function, abnormal immune function and the like, neurasthenia symptoms such as hypomnesis, hypersomnia and the like can appear after long-term low-dose formaldehyde contact, mutation of genetic materials can be caused, and chromosomes can be damaged. At present, most of formaldehyde-removing latex paints sold in China adopt substances with adsorption performance as formaldehyde-removing materials, and the formaldehyde-removing latex paints can have a formaldehyde desorption phenomenon when formaldehyde adsorption is saturated, so that the formaldehyde-removing efficiency of the latex paints is severely limited; although many high-quality formaldehyde-removing latex paints can increase the formaldehyde-removing amount by adding some auxiliary agents which are matched with catalytic degradation and chemical formaldehyde removal on the basis of formaldehyde adsorption, the interaction efficiency of the components of the simply-compounded formaldehyde-removing filler is low, the phenomenon of non-uniform dispersion is easy to occur in the latex, and the formaldehyde-removing performance of the latex paint is obviously reduced.
Therefore, it is very important to research an indoor latex paint capable of efficiently removing formaldehyde.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the preparation method of the indoor latex paint for adsorbing and removing formaldehyde.
In order to achieve the purpose, the preparation method of the indoor latex paint for adsorbing and removing formaldehyde provided by the invention specifically comprises the following steps.
Step 1, preparing chitin modified graphene aerogel.
(1) Adding 0.5-1g of graphite oxide into a beaker filled with 200-500mL of deionized water, and carrying out ultrasonic treatment in an ultrasonic cell crusher for 10-30min at an ultrasonic power ratio of 50% -90% to prepare the graphene oxide aqueous solution.
(2) Adding 5-10g of chitin into a beaker filled with 50-100mL of deionized water, mechanically stirring and dispersing for 1-2h at the stirring speed of 100-.
(3) Adding 500mL of graphene oxide aqueous solution of 200-; cooling the reaction kettle to 20-30 ℃, adding 50-100mL of chitin aqueous dispersion into the system, and reacting for 3-5 h; and (3) carrying out suction filtration and washing on the product for 2-4 times, and carrying out freeze drying for 24-48h at the temperature of-50-10 ℃ to obtain the chitin modified graphene aerogel.
And 2, preparing the indoor latex paint for adsorbing and removing the formaldehyde.
(1) Crushing 1-5g of chitin modified graphene aerogel in a high-speed crusher for 10-25min, wherein the mesh number of the crushed powder is 50-200 meshes.
(2) Sequentially adding 10-30g of deionized water, 10-15g of mildew-proof filler, 10-15g of titanium dioxide and 10-20g of pigment into a stirring container; the mechanical stirring is started, the stirring blending time is 10-30min, and the stirring speed is 300-500 r/min.
(3) Under the condition of stirring rotation speed of 500-; stirring and blending for 30-50min, and uniformly dispersing to obtain the emulsion paint product.
The water-based emulsion paint emulsion is one or a combination of a plurality of styrene-acrylic emulsion, pure acrylic emulsion, silicone acrylic emulsion, vinyl acetate-ethylene copolymer emulsion.
The mildew-proof filler is one or a combination of more of nano zinc oxide, cuprous oxide and barium metaborate.
The pigment is one of lithopone, antimony white, iron oxide yellow, chromium oxide green and iron blue.
The defoaming agent is one or a combination of polydimethylsiloxane, fluorosilicone and ethylene glycol siloxane.
The invention has the beneficial effects.
The invention discloses a preparation method of indoor latex paint for adsorbing and removing formaldehyde, which is compounded by chitin modified graphene aerogel, aqueous latex paint emulsion and other auxiliary agents. According to the invention, chitin modified graphene aerogel is used as a filler for adsorbing and removing formaldehyde and is added into indoor water-based emulsion paint; on one hand, the graphene aerogel has strong adsorption performance on formaldehyde gas, and can efficiently absorb formaldehyde gas generated by decoration; on the other hand, the surface of the chitin contains a large amount of amino groups, and researches show that when formaldehyde gas is contacted with the amino groups, the formaldehyde gas can rapidly generate a chemical reaction to generate a stable imine structure; the interaction of physical adsorption and chemical removal can obviously improve the adsorption and removal efficiency of formaldehyde in the latex paint, compared with the traditional formaldehyde adsorption latex paint, the formaldehyde removal efficiency of the latex paint prepared by the invention can be improved by 10-30%, the formaldehyde adsorption of the latex paint prepared by the invention is irreversible, the phenomenon that formaldehyde is adsorbed, saturated and desorbed and released into the air can not occur, and 120mg of formaldehyde can be removed by every 100g of the latex paint, and the removal amount of the latex paint is improved by 40% compared with the traditional formaldehyde adsorption latex paint. In addition, the mildew-proof filler, the pigment and the chitin modified graphene aerogel are added to the surface of the emulsion paint, bubbles and raised points are easily generated, and in order to overcome the defect, the organic silicon defoaming agent is selected to remove the bubbles.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1.
(1) And (3) preparing the chitin modified graphene aerogel.
a. Adding 1g of graphite oxide into a beaker filled with 300mL of deionized water, and carrying out ultrasonic treatment in an ultrasonic cell crusher for 30min at an ultrasonic power ratio of 90% to prepare a graphene oxide aqueous solution.
b. Adding 10g chitin into a beaker filled with 100mL deionized water, mechanically stirring and dispersing for 1.5h, and stirring at the rotating speed of 180 r/min to obtain chitin aqueous dispersion.
c. Adding 300mL of graphene oxide aqueous solution into a reaction kettle, adding 300mL of ethylenediamine and 0.07g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride (EDC) into the reaction kettle, and carrying out condensation reflux reaction at 90 ℃ for 4 hours; and cooling the reaction kettle to 20 ℃, adding 100mL of chitin aqueous dispersion into the system, reacting for 4h, carrying out suction filtration and washing on the product for 3 times, and carrying out freeze drying at-50 ℃ for 24h to obtain the chitin modified graphene aerogel.
(2) Preparing the indoor latex paint for adsorbing and removing formaldehyde.
a. And (3) crushing 5g of chitin modified graphene aerogel in a high-speed crusher for 25min, wherein the mesh number of the crushed powder is 200 meshes.
b. Adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; and opening the mechanical stirring and mixing machine, wherein the stirring and blending time is 15min, and the stirring speed is 350 r/min.
c. Under the condition that the stirring speed is 800 r/min, 50g of aqueous pure acrylic latex paint emulsion, 5g of chitin modified graphene aerogel and 0.5g of polydimethylsiloxane are sequentially added into a stirring container, and the stirring and blending time is 40min, so that the latex paint product is obtained.
Example 2.
(1) And (3) preparing the chitin modified graphene aerogel.
a. Adding 1g of graphite oxide into a beaker filled with 300mL of deionized water, and carrying out ultrasonic treatment in an ultrasonic cell crusher for 30min at an ultrasonic power ratio of 90% to prepare a graphene oxide aqueous solution.
b. Adding 10g chitin into a beaker filled with 100mL deionized water, mechanically stirring and dispersing for 1.5h, and stirring at the rotating speed of 180 r/min to obtain chitin aqueous dispersion.
c. Adding 300mL of graphene oxide aqueous solution into a reaction kettle, adding 300mL of ethylenediamine and 0.07g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride (EDC) into the reaction kettle, and carrying out condensation reflux reaction at 90 ℃ for 4 hours; and cooling the reaction kettle to 20 ℃, adding 100mL of chitin aqueous dispersion into the system, reacting for 4h, carrying out suction filtration and washing on the product for 3 times, and carrying out freeze drying at-50 ℃ for 24h to obtain the chitin modified graphene aerogel.
(2) Preparing the indoor latex paint for adsorbing and removing formaldehyde.
a. And (3) crushing 8g of chitin modified graphene aerogel in a high-speed crusher for 25min, wherein the mesh number of the crushed powder is 200 meshes.
b. Adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; and opening the mechanical stirring and mixing machine, wherein the stirring and blending time is 15min, and the stirring speed is 350 r/min.
c. Under the condition that the stirring speed is 800 r/min, 50g of aqueous pure acrylic latex paint emulsion, 8g of chitin modified graphene aerogel and 0.5g of polydimethylsiloxane are sequentially added into a stirring container, and the stirring and blending time is 40min, so that the latex paint product is obtained.
Example 3.
(1) And (3) preparing the chitin modified graphene aerogel.
a. Adding 1g of graphite oxide into a beaker filled with 300mL of deionized water, and carrying out ultrasonic treatment in an ultrasonic cell crusher for 30min at an ultrasonic power ratio of 90% to prepare a graphene oxide aqueous solution.
b. Adding 10g chitin into a beaker filled with 100mL deionized water, mechanically stirring and dispersing for 1.5h, and stirring at the rotating speed of 180 r/min to obtain chitin aqueous dispersion.
c. Adding 300mL of graphene oxide aqueous solution into a reaction kettle, adding 300mL of ethylenediamine and 0.07g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride (EDC) into the reaction kettle, and carrying out condensation reflux reaction at 90 ℃ for 4 hours; and cooling the reaction kettle to 20 ℃, adding 100mL of chitin aqueous dispersion into the system, reacting for 4h, carrying out suction filtration and washing on the product for 3 times, and carrying out freeze drying at-50 ℃ for 24h to obtain the chitin modified graphene aerogel.
(2) Preparing the indoor latex paint for adsorbing and removing formaldehyde.
a. 10g of chitin modified graphene aerogel is crushed in a high-speed crusher for 25min, and the mesh number of the crushed powder is 200 meshes.
b. Adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; and opening the mechanical stirring and mixing machine, wherein the stirring and blending time is 15min, and the stirring speed is 350 r/min.
c. Under the condition that the stirring speed is 800 r/min, 50g of aqueous pure acrylic latex paint emulsion, 10g of chitin modified graphene aerogel and 0.5g of polydimethylsiloxane are sequentially added into a stirring container, and the stirring and blending time is 40min, so that the latex paint product is obtained.
Comparative example 1.
(1) And (3) preparing the indoor emulsion paint.
a. Adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; and opening the mechanical stirring and mixing machine, wherein the stirring and blending time is 15min, and the stirring speed is 350 r/min.
b. And (3) increasing the stirring rotation speed to 800 r/min, sequentially adding 50g of aqueous pure acrylic latex paint emulsion and 0.5g of polydimethylsiloxane into a stirring container, stirring and blending for 40min, and uniformly dispersing to obtain the latex paint product.
Comparative example 2.
(1) And (3) preparing the indoor emulsion paint.
a. Crushing 1-5g of graphene aerogel in a high-speed crusher for 25 min.
b. Adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; and opening the mechanical stirring and mixing machine, wherein the stirring and blending time is 15min, and the stirring speed is 350 r/min.
c. And (3) increasing the stirring rotation speed to 800 r/min, sequentially adding 50g of aqueous pure acrylic latex paint emulsion, 10g of graphene aerogel and 0.5g of polydimethylsiloxane into a stirring container, stirring and blending for 40min, and uniformly dispersing to obtain the latex paint product.
Comparative example 3.
(1) And (3) preparing the indoor emulsion paint.
a. Adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; and opening the mechanical stirring and mixing machine, wherein the stirring and blending time is 15min, and the stirring speed is 350 r/min.
b. And (3) increasing the stirring rotation speed to 800 r/min, sequentially adding 50g of aqueous pure acrylic latex paint emulsion, 10g of chitin and 0.5g of polydimethylsiloxane into a stirring container, stirring and blending for 40min, and uniformly dispersing to obtain the latex paint product.
The three examples and the comparative example were tested, and the results are shown in Table 1.
TABLE 1 test results of examples and comparative examples.
Claims (7)
1. A preparation method of indoor latex paint for adsorbing and removing formaldehyde is characterized by comprising the following steps:
step 1, preparing chitin modified graphene aerogel:
(1) adding 0.5-1g of graphite oxide into a beaker filled with 200-500mL of deionized water, and carrying out ultrasonic treatment in an ultrasonic cell crusher for 10-30min at an ultrasonic power ratio of 50% -90% to prepare a graphene oxide aqueous solution;
(2) adding 5-10g of chitin into a beaker filled with 50-100mL of deionized water, mechanically stirring and dispersing for 1-2h at the stirring speed of 100-;
(3) adding 500mL of 200-mL graphene oxide aqueous solution into a reaction kettle, adding 500mL of ethylenediamine 300-mL and 0.05-0.1g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride (EDC) into the reaction kettle, and carrying out condensation reflux reaction at the temperature of 90-100 ℃ for 3-5 h; cooling the reaction kettle to 20-30 ℃, adding 50-100mL of chitin aqueous dispersion into the system, and reacting for 3-5 h; performing suction filtration and washing on the product for 2-4 times, and performing freeze drying for 24-48h at the temperature of-50-10 ℃ to obtain chitin modified graphene aerogel;
step 2, preparing the indoor latex paint for adsorbing and removing formaldehyde:
(1) crushing 1-5g of chitin modified graphene aerogel in a high-speed crusher for 10-25min, wherein the mesh number of the crushed powder is 50-200 meshes;
(2) sequentially adding 10-30g of deionized water, 10-15g of mildew-proof filler, 10-15g of titanium dioxide and 10-20g of pigment into a stirring container; opening the mechanical stirring mixing, wherein the stirring blending time is 10-30min, and the stirring rotating speed is 300-500 r/min;
(3) under the condition of stirring rotation speed of 500-; stirring and blending for 30-50min, and dispersing uniformly to obtain an emulsion paint product;
the defoaming agent is selected from organosilicon defoaming agents to remove bubbles; the defoaming agent is one or a combination of polydimethylsiloxane, fluorosilicone and ethylene glycol siloxane.
2. The method of claim 1, wherein the aqueous latex paint emulsion is one or more selected from the group consisting of styrene-acrylic emulsion, silicone-acrylic emulsion, vinyl acetate-ethylene copolymer emulsion.
3. The method of claim 1, wherein the anti-mildew filler is one or more of nano zinc oxide, cuprous oxide, and barium metaborate.
4. The method of claim 1, wherein the pigment is lithopone, antimony white, yellow iron oxide, green chromium oxide, or iron blue.
5. The method for preparing the indoor latex paint capable of adsorbing and removing formaldehyde according to claim 1, which comprises the following steps:
(1) preparing chitin modified graphene aerogel:
a. adding 1g of graphite oxide into a beaker filled with 300mL of deionized water, and carrying out ultrasonic treatment in an ultrasonic cell crusher for 30min at an ultrasonic power ratio of 90% to prepare a graphene oxide aqueous solution;
b. adding 10g of chitin into a beaker filled with 100mL of deionized water, mechanically stirring and dispersing for 1.5h, and stirring at the rotating speed of 180 r/min to prepare chitin aqueous dispersion;
c. adding 300mL of graphene oxide aqueous solution into a reaction kettle, adding 300mL of ethylenediamine and 0.07g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride (EDC) into the reaction kettle, and carrying out condensation reflux reaction at 90 ℃ for 4 hours; cooling the reaction kettle to 20 ℃, adding 100mL of chitin aqueous dispersion into the system, reacting for 4h, carrying out suction filtration and washing on the product for 3 times, and carrying out freeze drying at-50 ℃ for 24h to obtain chitin-modified graphene aerogel;
(2) preparing the indoor latex paint for adsorbing and removing formaldehyde:
a. crushing 5g of chitin modified graphene aerogel in a high-speed crusher for 25min, wherein the mesh number of the crushed powder is 200 meshes;
b. adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; opening a mechanical stirring mixer, stirring and blending for 15min, wherein the stirring speed is 350 revolutions per minute;
c. under the condition that the stirring speed is 800 r/min, 50g of aqueous pure acrylic latex paint emulsion, 5g of chitin modified graphene aerogel and 0.5g of polydimethylsiloxane are sequentially added into a stirring container, and the stirring and blending time is 40min, so that the latex paint product is obtained.
6. The method for preparing the indoor latex paint capable of adsorbing and removing formaldehyde according to claim 1, which comprises the following steps:
(1) preparing chitin modified graphene aerogel:
a. adding 1g of graphite oxide into a beaker filled with 300mL of deionized water, and carrying out ultrasonic treatment in an ultrasonic cell crusher for 30min at an ultrasonic power ratio of 90% to prepare a graphene oxide aqueous solution;
b. adding 10g of chitin into a beaker filled with 100mL of deionized water, mechanically stirring and dispersing for 1.5h, and stirring at the rotating speed of 180 r/min to prepare chitin aqueous dispersion;
c. adding 300mL of graphene oxide aqueous solution into a reaction kettle, adding 300mL of ethylenediamine and 0.07g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride (EDC) into the reaction kettle, and carrying out condensation reflux reaction at 90 ℃ for 4 hours; cooling the reaction kettle to 20 ℃, adding 100mL of chitin aqueous dispersion into the system, reacting for 4h, carrying out suction filtration and washing on the product for 3 times, and carrying out freeze drying at-50 ℃ for 24h to obtain chitin-modified graphene aerogel;
(2) preparing the indoor latex paint for adsorbing and removing formaldehyde:
a. crushing 8g of chitin modified graphene aerogel in a high-speed crusher for 25min, wherein the mesh number of the crushed powder is 200 meshes;
b. adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; opening a mechanical stirring mixer, stirring and blending for 15min, wherein the stirring speed is 350 revolutions per minute;
c. under the condition that the stirring speed is 800 r/min, 50g of aqueous pure acrylic latex paint emulsion, 8g of chitin modified graphene aerogel and 0.5g of polydimethylsiloxane are sequentially added into a stirring container, and the stirring and blending time is 40min, so that the latex paint product is obtained.
7. The method for preparing the indoor latex paint capable of adsorbing and removing formaldehyde according to claim 1, which comprises the following steps:
(1) preparing chitin modified graphene aerogel:
a. adding 1g of graphite oxide into a beaker filled with 300mL of deionized water, and carrying out ultrasonic treatment in an ultrasonic cell crusher for 30min at an ultrasonic power ratio of 90% to prepare a graphene oxide aqueous solution;
b. adding 10g of chitin into a beaker filled with 100mL of deionized water, mechanically stirring and dispersing for 1.5h, and stirring at the rotating speed of 180 r/min to prepare chitin aqueous dispersion;
c. adding 300mL of graphene oxide aqueous solution into a reaction kettle, adding 300mL of ethylenediamine and 0.07g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride (EDC) into the reaction kettle, and carrying out condensation reflux reaction at 90 ℃ for 4 hours; cooling the reaction kettle to 20 ℃, adding 100mL of chitin aqueous dispersion into the system, reacting for 4h, carrying out suction filtration and washing on the product for 3 times, and carrying out freeze drying at-50 ℃ for 24h to obtain chitin-modified graphene aerogel;
(2) preparing the indoor latex paint for adsorbing and removing formaldehyde:
a. crushing 10g of chitin modified graphene aerogel in a high-speed crusher for 25min, wherein the mesh number of the crushed powder is 200 meshes;
b. adding 25g of deionized water, 10g of nano zinc oxide, 12g of titanium dioxide and 10g of lithopone into a stirring container in sequence; opening a mechanical stirring mixer, stirring and blending for 15min, wherein the stirring speed is 350 revolutions per minute;
c. under the condition that the stirring speed is 800 r/min, 50g of aqueous pure acrylic latex paint emulsion, 10g of chitin modified graphene aerogel and 0.5g of polydimethylsiloxane are sequentially added into a stirring container, and the stirring and blending time is 40min, so that the latex paint product is obtained.
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| CN101824277A (en) * | 2010-03-11 | 2010-09-08 | 湖北饰乃康涂料有限公司 | Latex paint and aqueous wood ware paint for eliminating formaldehyde and preparation method thereof |
| CN105129772A (en) * | 2015-09-18 | 2015-12-09 | 同济大学 | Method for preparing amination CNT (carbon nano tube)-graphene aerogel |
| CN106517171A (en) * | 2015-09-10 | 2017-03-22 | 中国科学院上海微***与信息技术研究所 | Preparation method of graphene aerogel |
| CN107243326A (en) * | 2017-05-16 | 2017-10-13 | 北京化工大学 | A kind of preparation method of graphene oxide/chitosan composite aerogel microballoon |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101824277A (en) * | 2010-03-11 | 2010-09-08 | 湖北饰乃康涂料有限公司 | Latex paint and aqueous wood ware paint for eliminating formaldehyde and preparation method thereof |
| CN106517171A (en) * | 2015-09-10 | 2017-03-22 | 中国科学院上海微***与信息技术研究所 | Preparation method of graphene aerogel |
| CN105129772A (en) * | 2015-09-18 | 2015-12-09 | 同济大学 | Method for preparing amination CNT (carbon nano tube)-graphene aerogel |
| CN107243326A (en) * | 2017-05-16 | 2017-10-13 | 北京化工大学 | A kind of preparation method of graphene oxide/chitosan composite aerogel microballoon |
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Denomination of invention: A preparation method for indoor latex paint that adsorbs and removes formaldehyde Effective date of registration: 20231019 Granted publication date: 20200512 Pledgee: Bank of Jilin Co.,Ltd. Shenyang Branch Pledgor: Liaoning Shunfeng New Material Technology Co.,Ltd. Registration number: Y2023210000260 |