Formaldehyde-removing odor-removing home decoration coating and construction process thereof

Abstract

The invention relates to the field of building materials, and particularly discloses a formaldehyde-removing odor-removing home decoration coating and a construction process thereof. The formaldehyde-removing odor-removing home decoration coating comprises a putty layer and an emulsion paint layer, wherein putty is prepared from the following raw materials: water, white cement, fly ash, coarse whiting, talcum powder, hydroxypropyl methyl cellulose ether, redispersible latex powder, an organic silicon defoaming agent and a formaldehyde-removing odor-removing agent; the latex paint is prepared from the following raw materials: water, acrylic emulsion, hydroxyethyl cellulose, potassium polyacrylate, a nonionic wetting agent, an organic silicon defoaming agent, calcined kaolin, coarse whiting, titanium dioxide, texanol ester alcohol, propylene glycol and a formaldehyde-removing odor-removing agent. The formaldehyde-removing odor-removing agent is prepared from polypropylene reticular fibers, nano titanium dioxide modified diatomite and mica sheets. The preparation method comprises the following steps: treating the base layer; puttying is conducted; and brushing emulsion paint. The formaldehyde-removing and odor-removing home decoration coating has the advantage of being excellent in formaldehyde-removing and odor-removing effect.

Description

Technical Field

[0001] The present application relates to the field of building materials, and more specifically, to a formaldehyde-removing and odor-removing home decoration coating and a construction process thereof. Background Art

[0002] At present, indoor wall coatings mainly include putty and latex paint. Putty is a material used for wall repair and leveling, usually composed of base material, filler, water and additives. Its main function is to fill the depressions and gaps in the wall, make the wall smooth, and facilitate subsequent painting work. Latex paint is a type of water-based paint made of synthetic resin emulsion as the base material, with pigments, fillers and various additives added. It is widely used because of its rapid film formation, shortened construction period, saved construction costs, and excellent air permeability. Latex paint is mainly used for coloring and protection of walls, with simple construction and beautiful effects.

[0003] However, as people's living standards improve, their requirements for environmental protection are getting higher and higher. They hope that home decoration coatings have the performance of removing formaldehyde and purifying the air. However, the existing coatings are difficult to meet this demand. It is necessary to design a new home decoration coating that can remove formaldehyde and purify odor. Summary of the invention

[0004] In order to improve the formaldehyde removal and air purification performance of home decoration coatings, the present application provides a formaldehyde removal and odor removal home decoration coating and a construction process thereof.

[0005] In the first aspect, the present application provides a formaldehyde-removing and odor-removing home decoration coating, which adopts the following technical solution:

[0006] A formaldehyde-removing and odor-removing home decoration coating, comprising a putty layer and a latex paint layer;

[0007] The putty comprises the following raw materials in parts by weight: 41-46 parts of water, 26-29 parts of white cement, 6-8 parts of fly ash, 18-22 parts of heavy calcium, 6-8 parts of talc, 0.02-0.05 parts of hydroxypropyl methylcellulose ether, 0.6-1 parts of redispersible latex powder, 0.1-0.3 parts of organosilicon defoaming agent, and 20-30 parts of formaldehyde removal and deodorizing agent;

[0008] The latex paint comprises the following raw materials in parts by weight: 16-18 parts of water, 25-28 parts of acrylic emulsion, 0.1-0.3 parts of hydroxyethyl cellulose, 0.4-0.6 parts of potassium polyacrylate, 0.5-0.7 parts of nonionic wetting agent, 0.1-0.3 parts of organic silicon defoamer, 4-6 parts of calcined kaolin, 8-12 parts of heavy calcium, 6-8 parts of titanium dioxide, 0.5-0.7 parts of dodecyl alcohol ester, 0.3-0.5 parts of propylene glycol, and 20-30 parts of formaldehyde removal and deodorizing agent;

[0009] The formaldehyde-removing and deodorizing agent comprises polypropylene mesh fibers, nano-titanium dioxide-modified diatomaceous earth and mica flakes, and the weight ratio of the polypropylene mesh fibers, the nano-titanium dioxide-modified diatomaceous earth and the mica flakes is 1:3:1.

[0010] By adopting the above technical scheme, formaldehyde removal and odor removal agents are used, including polypropylene mesh fibers, nano-titanium dioxide modified diatomaceous earth and mica sheets.

[0011] Under the effective action of ultraviolet light, nano-titanium dioxide has a strong degradation effect on organic matter, and can react chemically with harmful gases such as formaldehyde, toluene, and ammonia to degrade them. Diatomaceous earth has a significant porous characteristic, with countless micro- and nano-scale pores on its surface, and its surface is covered with a large number of silicon hydroxyl groups, and there are hydrogen bonds. Hydroxyl groups are also distributed on the inner surface of the pores of diatomaceous earth, making diatomaceous earth surface active and adsorbent, and can more effectively adsorb harmful gases in the room, and react in its micropores, thereby decomposing and solidifying harmful gases into solidified substances. Therefore, diatomaceous earth modified with nano-titanium dioxide has a better effect in adsorbing and degrading harmful gases such as formaldehyde.

[0012] However, the porous structure of diatomaceous earth reduces the tensile strength of the coating and makes it easy to crack when drying. The redispersible latex powder in putty powder and the acrylic emulsion in latex paint are easy to block the pore structure of diatomaceous earth during the dispersion and film-forming process, hindering the further reaction of nano-titanium dioxide with harmful substances such as formaldehyde, significantly reducing the formaldehyde purification rate and formaldehyde purification durability. In addition, nano-titanium dioxide reacts with ultraviolet light, which is difficult to receive indoors.

[0013] Based on the above shortcomings, polypropylene mesh fiber and mica flakes are added to the formaldehyde removal and deodorizing agent. On the one hand, the polypropylene mesh fiber can improve the tensile strength of the coating, and on the other hand, it can promote the dispersion of redispersible latex powder, acrylic emulsion and nano-titanium dioxide modified diatomaceous earth through its mesh structure, reduce the blockage of the pore structure of diatomaceous earth during the film formation of redispersible latex powder or acrylic emulsion, and improve the purification of formaldehyde and other harmful substances by nano-titanium dioxide modified diatomaceous earth. Mica flakes have a layered structure. On the one hand, they can be stuck in the mesh structure of the polypropylene mesh fiber and adsorbed on the surface of the nano-titanium dioxide modified diatomaceous earth, reducing the blockage of the pore structure of diatomaceous earth during the film formation of redispersible latex powder or acrylic emulsion. On the other hand, they can effectively reflect and scatter ultraviolet light, and more of it is received by the nano-titanium dioxide modified diatomaceous earth, so as to give full play to its formaldehyde removal and deodorizing effect.

[0014] Therefore, the effect of improving the formaldehyde removal and air purification performance of the home decoration coating is obtained.

[0015] Optionally, the preparation method of the nano-titanium dioxide modified diatomaceous earth is:

[0016] The diatomaceous earth powder is subjected to a pretreatment operation of drying and sieving;

[0017] Tetrabutyl titanate was added dropwise to anhydrous ethanol, and the mixture was stirred continuously to completely dissolve the tetrabutyl titanate. Nitric acid was added and the mixture was stirred continuously until a transparent sol was formed.

[0018] The pretreated diatomite powder is added to the tetrabutyl titanate sol, and the mixture is stirred evenly, and nitric acid is added to adjust the pH to 4 to obtain a mixture;

[0019] The mixture was allowed to stand for 24 hours to fully age, then centrifuged, washed, dried, and then calcined at 450°C in an air atmosphere for 3 hours;

[0020] After cooling to room temperature, the mixture was taken out and ground to obtain nano-titanium dioxide modified diatomaceous earth, wherein the weight ratio of nano-titanium dioxide to diatomaceous earth was 1:9.

[0021] By adopting the above technical solution, the prepared nano titanium dioxide modified diatomaceous earth has excellent formaldehyde removal and odor removal effects.

[0022] Optionally, the particle size of the nano-titanium dioxide modified diatomaceous earth is 200-300 meshes.

[0023] By adopting the above technical solution, the formaldehyde removal and deodorizing agent made of nano-titanium dioxide modified diatomaceous earth in this particle size range has better indoor formaldehyde removal and air purification effect and durability.

[0024] Optionally, the latex paint further comprises germanium stone powder, cellulose nano whiskers and porous ceramic particles, the weight portion of the germanium stone powder is 8 to 10 parts, the weight portion of the cellulose nano whiskers is 6 to 8 parts, and the weight portion of the porous ceramic particles is 6 to 8 parts.

[0025] By adopting the above technical solution, porous ceramic particles can promote the flow of wind, cellulose nano whiskers can form air flow channels, promote the friction between airflow and germanium stone powder, and under the friction of airflow, germanium stone powder can generate negative ions to purify the air. At the same time, the porous ceramic particles and nano-titanium dioxide modified diatomaceous earth can also regulate the air humidity after compounding, further promoting air flow; cellulose nano whiskers can also penetrate into the pore structure of porous ceramic particles and diatomaceous earth, reducing the blockage of the pore structure when latex paint forms a film, thereby further improving the formaldehyde removal and deodorization effect of the coating and the durability of formaldehyde removal and deodorization. In addition, the compounding of these three substances, combined with the formaldehyde removal and deodorization agent, can also effectively improve the tensile strength of the coating, reduce the cracking of the coating, and thus improve the durability of the formaldehyde removal and deodorization of the coating.

[0026] Optionally, the preparation method of putty is: mix polypropylene mesh fiber, nano-titanium dioxide modified diatomaceous earth, and mica flakes evenly to prepare a formaldehyde deodorizer for use; weigh each raw material according to the ratio, mix the raw materials except water in a stirring container and stir until uniform, so as to obtain putty powder; add water to the stirring container in a stirring state until it is stirred evenly without bubbles, and let it stand for half an hour to obtain putty.

[0027] Optionally, the preparation method of latex paint is: add water, hydroxyethyl cellulose, potassium polyacrylate, non-ionic wetting agent, and silicone defoaming agent in a dispersion container in sequence, and disperse at 800 r / min for 10 minutes until the mixture is in a slurry state; increase the speed to 1500 r / min, add calcined kaolin, heavy calcium, titanium dioxide, and formaldehyde remover and deodorizer in sequence, and disperse for 30 minutes; reduce the speed to 800 r / min, add acrylic emulsion, lauryl alcohol ester, and propylene glycol, mix well, and latex paint can be obtained.

[0028] By adopting the above technical solution, the formaldehyde removal and odor removal agent can be dispersed in steps, which has a better dispersion effect and can give full play to the formaldehyde removal and odor removal effect.

[0029] Optionally, the latex paint can be prepared by:

[0030] Add water, hydroxyethyl cellulose, potassium polyacrylate, nonionic wetting agent and silicone defoamer into the dispersion container in sequence, and disperse at 800 r / min for 10 min until the mixture becomes slurry;

[0031] Increase the speed to 1500r / min, add calcined kaolin, heavy calcium, titanium dioxide, formaldehyde remover, germanium stone powder, cellulose nano whiskers and porous ceramic particles in sequence, and disperse for 30 minutes;

[0032] Reduce the speed to 800r / min, add acrylic emulsion, lauryl ester and propylene glycol, mix well, and then you can make latex paint.

[0033] In a second aspect, the present application provides a construction process for a formaldehyde-removing and odor-removing home decoration coating, which adopts the following technical solution:

[0034] A construction process for a formaldehyde-removing and odor-removing home decoration coating comprises the following steps:

[0035] Base treatment: The base must be dry, flat and clean;

[0036] Scrape putty: prepare putty, scrape it in the order of horizontal and vertical, scrape it three times, wait for the putty to dry, grind it flat and clean the dust before scraping it again. The thickness of the putty layer is 3mm, and the putty layer must be smooth, flat and clean;

[0037] Brushing latex paint: prepare latex paint and apply it. Apply the second coat after the first coat has dried. The interval between two coats is 3 hours. Apply three times in total. When painting, be careful not to have obvious brush marks and flow marks. The thickness of the latex paint layer is 1mm.

[0038] By adopting the above technical solution, the coating construction process is simple and convenient, and the coating after painting has excellent formaldehyde removal and odor removal effect and tensile strength.

[0039] In summary, this application has the following beneficial effects:

[0040] 1. Since the present application adopts formaldehyde removal and odor purifier, and the polypropylene mesh fiber and mica flakes are compounded, the problems of the pores of the nano-titanium dioxide modified diatomaceous earth being blocked and receiving less ultraviolet light are alleviated, and the adsorption and degradation of harmful substances such as formaldehyde by the nano-titanium dioxide modified diatomaceous earth are improved. The tensile strength of the coating can also be improved, and cracking can be slowed down, thereby achieving the effect of improving the formaldehyde removal and air purification performance of the home decoration coating.

[0041] 2. In this application, germanium stone powder, cellulose nano whiskers and porous ceramic particles are preferably used and added to latex paint, which promotes the friction between the airflow and the germanium stone powder, generates negative ions, and thus purifies the air, thereby achieving the effect of improving the durability of the coating's formaldehyde removal and odor removal.

[0042] 3. The method of the present application, through the coating construction process, the coating after brushing has excellent formaldehyde removal and odor removal effect and tensile strength. DETAILED DESCRIPTION

[0043] The present application is further described in detail with reference to the following examples. It is specially noted that if no specific conditions are specified in the following examples, the conventional conditions or the conditions recommended by the manufacturer are followed, and the raw materials used in the following examples can be obtained from common commercial sources unless otherwise specified.

[0044] White cement, strength grade 32.5, brand Guangdong Suihua.

[0045] Fly ash, first grade.

[0046] Heavy calcium, powder, 500 mesh.

[0047] Talc, 50 μm.

[0048] Hydroxypropyl methylcellulose ether, viscosity 40000mPa·s, fineness 80 mesh. Redispersible latex powder, brand: Wacker, model: 5044N.

[0049] Silicone defoamer, industrial grade, brand: Hengxin.

[0050] Polypropylene mesh fiber, length 19±1mm, bundled net, brand: Songze.

[0051] Diatomaceous earth powder, first grade, brand: Yongshun Mining.

[0052] Tetrabutyl titanate, industrial grade, CAS number: 5593-70-4.

[0053] Mica flakes, 30±10 mesh, brand: Zexu Minerals.

[0054] Acrylic emulsion, brand: BIT-10, brand: Junda Chemical.

[0055] Hydroxyethyl cellulose, CAS: 9004-62-0, Brand: Tianchou.

[0056] Potassium polyacrylate, first grade, brand: Hengyu Chemical.

[0057] Non-ionic wetting agent, brand: Dow Chemical, model: EH-9.

[0058] Calcined kaolin, nanoscale.

[0059] Titanium dioxide, nanometer grade.

[0060] Germanium stone powder, particle size: 1250 mesh, brand: Dexu.

[0061] Cellulose nanowhiskers, CAS number: 9004-34-6, brand: Beike Nano.

[0062] Porous ceramic particles, particle size: 0.5mm.

[0063] Preparation example of aldehyde removal and odor removal agent

[0064] Preparation Example 1

[0065] The formaldehyde removal and deodorizing agent comprises polypropylene mesh fiber, nano-titanium dioxide modified diatomaceous earth and mica flakes. The weight of the polypropylene mesh fiber is 10 kg, the weight of the nano-titanium dioxide modified diatomaceous earth is 30 kg, and the weight of the mica flakes is 10 kg.

[0066] The preparation method of the formaldehyde removal odor purifier is as follows:

[0067] Preparation of nano-titanium dioxide modified diatomaceous earth:

[0068] Pretreatment of diatomaceous earth powder: Dry the diatomaceous earth powder at 105° C. for 2 h to remove moisture, then sieve to keep the particle size uniform, and take 90 kg of diatomaceous earth powder for later use.

[0069] 33.03 kg of tetrabutyl titanate was slowly added dropwise to 200 L of anhydrous ethanol, and stirring was continued to completely dissolve the tetrabutyl titanate. A small amount of 10 L of 1M nitric acid was added as a catalyst, and stirring was continued until a transparent sol was formed.

[0070] The pretreated diatomaceous earth powder is added to the tetrabutyl titanate sol, and stirred thoroughly to make the diatomaceous earth powder uniformly dispersed and completely covered by the sol. Nitric acid is added to adjust the pH to 4 to obtain a mixture.

[0071] The mixture was allowed to stand for 24 hours to allow it to age sufficiently. It was then centrifuged to remove excess solvent. The centrifuged mixture was washed with deionized water to remove unreacted substances and impurities. The washed mixture was placed in an oven and dried at 70°C for 3 hours until it was completely dry. The dried mixture was calcined at 450°C in an air atmosphere for 3 hours.

[0072] The calcined mixture was cooled to room temperature, and then the mixture was taken out and ground to obtain nano-titanium dioxide modified diatomaceous earth with a particle size of 200 meshes. The weight ratio of nano-titanium dioxide to diatomaceous earth was 1:9.

[0073] The formaldehyde-removing and deodorizing agent can be prepared by mixing polypropylene mesh fiber, nano-titanium dioxide-modified diatomaceous earth and mica flakes evenly according to the proportion.

[0074] Preparation Example 2

[0075] The difference between this preparation example and preparation example 1 is that the particle size of the nano-titanium dioxide modified diatomaceous earth is 250 meshes.

[0076] Preparation Example 3

[0077] The difference between this preparation example and preparation example 1 is that the particle size of the nano-titanium dioxide modified diatomaceous earth is 300 meshes.

[0078] Preparation Example 4

[0079] The difference between this preparation example and preparation example 2 is that the preparation method of nano-titanium dioxide modified diatomite is: 90 kg of diatomite powder is dispersed in water to prepare a suspension, and then 10 kg of nano-titanium dioxide is added and ultrasonically dispersed evenly, and then dried at 105° C. to remove moisture, and then ground to obtain nano-titanium dioxide modified diatomite with a particle size of 250 mesh.

[0080] Preparation Example 5

[0081] The difference between this preparation example and preparation example 2 is that there is no polypropylene mesh fiber in this preparation example.

[0082] Preparation Example 6

[0083] The difference between this preparation example and preparation example 2 is that there is no nano-titanium dioxide-modified diatomaceous earth in this preparation example.

[0084] Preparation Example 7

[0085] The difference between this preparation example and preparation example 2 is that there is no mica sheet in this preparation example.

[0086] Preparation Example 8

[0087] The difference between this preparation example and preparation example 2 is that there is no polypropylene mesh fiber and nano-titanium dioxide modified diatomaceous earth in this preparation example.

[0088] Preparation Example 9

[0089] The difference between this preparation example and preparation example 2 is that there is no nano-titanium dioxide-modified diatomaceous earth or mica flakes in this preparation example.

[0090] Preparation Example 10

[0091] The difference between this preparation example and preparation example 2 is that there are no polypropylene mesh fibers and mica sheets in this preparation example.

[0092] Example

[0093] Example 1

[0094] A formaldehyde-removing and odor-removing home decoration coating, comprising a putty layer and a latex paint layer;

[0095] The putty includes the following raw materials: water, white cement, fly ash, heavy calcium, talcum powder, hydroxypropyl methylcellulose ether, redispersible latex powder, silicone defoamer, formaldehyde-removing and deodorizing agent, and the formaldehyde-removing and deodorizing agent is prepared by Preparation Example 1. The amount of each raw material is shown in Table 1.

[0096] The latex paint includes the following raw materials in parts by weight: water, acrylic emulsion, hydroxyethyl cellulose, potassium polyacrylate, nonionic wetting agent, silicone defoamer, calcined kaolin, heavy calcium, titanium dioxide, lauryl alcohol ester, propylene glycol, formaldehyde-free and deodorizing agent, and the formaldehyde-free and deodorizing agent is prepared in Preparation Example 1. The amount of each raw material is shown in Table 2.

[0097] A construction process for a formaldehyde-removing and odor-removing home decoration coating comprises the following steps:

[0098] Base treatment: Clean and smooth the base, which should be dry, flat and clean;

[0099] Scrape putty:

[0100] Prepare putty: weigh the raw materials of putty according to the ratio, mix the raw materials except water in a stirring container and stir until uniform, so as to obtain putty powder; add water to the stirring container in a stirring state until it is uniform and there are no bubbles, let it stand for half an hour, and the putty can be obtained.

[0101] Scrape the putty in the order of horizontal and vertical alignment, scrape it three times. After each scraping, wait for the putty to dry, then grind it flat and clean the floating dust before scraping again. The putty layer is 3mm thick and the putty layer must be smooth, flat and clean.

[0102] Latex paint:

[0103] Preparation of latex paint: add water, hydroxyethyl cellulose, potassium polyacrylate, nonionic wetting agent and silicone defoamer in a dispersion container in sequence, and disperse at 800 r / min for 10 min until the mixture becomes a slurry; increase the speed to 1500 r / min, add calcined kaolin, heavy calcium, titanium dioxide and formaldehyde remover in sequence, and disperse for 30 min; reduce the speed to 800 r / min, add acrylic emulsion, lauryl alcohol ester and propylene glycol, mix well, and the latex paint can be obtained.

[0104] Paint the paint by brushing. Apply the second coat after the first coat has dried. The interval between two coats is 3 hours. Apply the paint three times in total. Be careful not to have obvious brush marks or flow marks when painting. The thickness of the latex paint layer is 1mm.

[0105] Example 2

[0106] The difference between this embodiment and embodiment 1 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 2, and the amount of each raw material is different. The amount of each raw material in the putty is shown in Table 1, and the amount of each raw material in the latex paint is shown in Table 2.

[0107] Example 3

[0108] The difference between this embodiment and embodiment 1 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 3, and the amount of each raw material is different. The amount of each raw material in the putty is shown in Table 1, and the amount of each raw material in the latex paint is shown in Table 2.

[0109] Example 4

[0110] The difference between this embodiment and embodiment 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 1.

[0111] Example 5

[0112] The difference between this embodiment and embodiment 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 3.

[0113] Example 6

[0114] The difference between this embodiment and embodiment 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 4.

[0115] Example 7

[0116] The difference between this embodiment and embodiment 2 is that the latex paint further includes germanium stone powder, cellulose nano whiskers and porous ceramic particles. The amount of each raw material used in the putty is shown in Table 1, and the amount of each raw material used in the latex paint is shown in Table 2.

[0117] The preparation method of latex paint is as follows: add water, hydroxyethyl cellulose, potassium polyacrylate, nonionic wetting agent and silicone defoamer in a dispersion container in sequence, and disperse at 800 r / min for 10 minutes until the mixture is in a slurry state; increase the speed to 1500 r / min, add calcined kaolin, heavy calcium, titanium dioxide, formaldehyde remover, germanium stone powder, cellulose nano whiskers and porous ceramic particles in sequence, and disperse for 30 minutes; reduce the speed to 800 r / min, add acrylic emulsion, lauryl alcohol ester and propylene glycol, mix well, and the latex paint can be obtained.

[0118] Example 8

[0119] The difference between this embodiment and embodiment 7 is that the amounts of germanium stone powder, cellulose nano whiskers and porous ceramic particles are different. The amounts of each raw material in putty are shown in Table 1, and the amounts of each raw material in latex paint are shown in Table 2.

[0120] Example 9

[0121] The difference between this embodiment and embodiment 7 is that the amounts of germanium stone powder, cellulose nano whiskers and porous ceramic particles are different. The amounts of each raw material in putty are shown in Table 1, and the amounts of each raw material in latex paint are shown in Table 2.

[0122] Example 10

[0123] The difference between this embodiment and embodiment 8 is that in this embodiment, there are no cellulose nano whiskers and porous ceramic particles in the latex paint.

[0124] Embodiment 11

[0125] The difference between this embodiment and embodiment 8 is that in this embodiment, there is no germanium stone powder and porous ceramic particles in the latex paint.

[0126] Example 12

[0127] The difference between this embodiment and embodiment 8 is that in this embodiment, there is no germanium stone powder and cellulose nano whiskers in the latex paint.

[0128] Embodiment 13

[0129] The difference between this embodiment and embodiment 8 is that in this embodiment, there are no porous ceramic particles in the latex paint.

[0130] Embodiment 14

[0131] The difference between this embodiment and embodiment 8 is that in this embodiment, there are no cellulose nano whiskers in the latex paint.

[0132] Embodiment 15

[0133] The difference between this embodiment and embodiment 8 is that in this embodiment, germanium stone powder is contained in the latex paint.

[0134] Comparative Example

[0135] Comparative Example 1

[0136] The difference between this comparative example and Example 2 is that there is no formaldehyde deodorizing agent in the putty and the latex paint.

[0137] Comparative Example 2

[0138] The difference between this comparative example and Example 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 5.

[0139] Comparative Example 3

[0140] The difference between this comparative example and Example 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 6.

[0141] Comparative Example 4

[0142] The difference between this comparative example and Example 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 7.

[0143] Comparative Example 5

[0144] The difference between this comparative example and Example 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 8.

[0145] Comparative Example 6

[0146] The difference between this comparative example and Example 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 9.

[0147] Comparative Example 7

[0148] The difference between this comparative example and Example 2 is that the formaldehyde removal and deodorizing agent is prepared by Preparation Example 10.

[0149] Comparative Example 8

[0150] The difference between this comparative example and Example 8 is that there is no formaldehyde removal and deodorizing agent in this comparative example.

[0151] Table 1 Amount and specifications of each raw material in putty

[0152]

[0153]

[0154] Table 2 Amount and specifications of each raw material in latex paint

[0155]

[0156]

[0157]

[0158]

[0159] Performance testing

[0160] Test methods

[0161] 1. Take the coatings prepared in different embodiments and comparative examples, refer to "JC / T1074-2021 Purification Performance of Indoor Air Purification Functional Coating Materials", prepare the samples according to "6.6.1", and complete 3 test cycles according to the methods of "Appendix B" and "Appendix C", respectively. When using the method of "Appendix C", a visible light source is used to test the formaldehyde air purification efficiency and purification durability. The average value of the test results of the two methods is taken. The test results are shown in Table 3 for details.

[0162] 2. Take the coatings prepared in different embodiments and comparative examples, refer to "JG / T24-2018 Synthetic Resin Emulsion Sand Wall Architectural Coatings", prepare samples according to "7.4 Test Plate Preparation", select mortar blocks as the base material for the board, and test the bonding strength of the coating under the standard state according to "7.17" to reflect the tensile strength of the coating. The test results are shown in Table 3.

[0163] Table 3

[0164]

[0165]

[0166] From Example 2 and Comparative Example 1 and Table 3, it can be seen that the formaldehyde removal and odor removal agent added in the present application can not only improve the formaldehyde removal and odor removal effect of the coating, but also effectively improve the tensile strength of the coating, reduce the occurrence of cracking and damage in the later stage, thereby further improving the formaldehyde removal and odor removal effect.

[0167] Combining Example 2 and Comparative Examples 1 to 7 and Table 3, it can be concluded that only by using polypropylene mesh fibers, nano-titanium dioxide modified diatomaceous earth and mica flakes in combination and cooperating with each raw material in the coating formula of the present application can an excellent formaldehyde removal and odor removal effect be achieved.

[0168] Combining Example 2 with Example 4 and Example 5 and Table 3, it can be seen that the particle size selection of nano-titanium dioxide modified diatomaceous earth has a great influence on the formaldehyde removal and odor removal effect.

[0169] It can be seen from Example 2 and Example 6 and Table 3 that the nano-titanium dioxide modified diatomaceous earth prepared by the method of the present application has excellent formaldehyde removal and odor removal effects.

[0170] It can be seen from Example 2 and Example 8 and Table 3 that after adding germanium stone powder, cellulose nano whiskers and porous ceramic particles, they are well compounded with the formaldehyde removal and deodorizing agent, further improving the formaldehyde removal and deodorizing effect and tensile strength of the coating.

[0171] In combination with Example 2, Example 8, Example 10 to Example 15, Comparative Example 8 and Table 3, it can be seen that only when the formaldehyde removal and odor removal agent, germanium stone powder, cellulose nano whiskers and porous ceramic particles are used in combination, the formaldehyde removal and odor removal effect is best and the tensile strength is further improved.

[0172] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A formaldehyde-removing and odor-removing home decoration coating, characterized in that: Including putty layer and latex paint layer; The putty comprises the following raw materials in parts by weight: 41-46 parts of water, 26-29 parts of white cement, 6-8 parts of fly ash, 18-22 parts of heavy calcium, 6-8 parts of talc, 0.02-0.05 parts of hydroxypropyl methylcellulose ether, 0.6-1 parts of redispersible latex powder, 0.1-0.3 parts of organosilicon defoaming agent, and 20-30 parts of formaldehyde removal and deodorizing agent; The latex paint comprises the following raw materials in parts by weight: 16-18 parts of water, 25-28 parts of acrylic emulsion, 0.1-0.3 parts of hydroxyethyl cellulose, 0.4-0.6 parts of potassium polyacrylate, 0.5-0.7 parts of nonionic wetting agent, 0.1-0.3 parts of organic silicon defoamer, 4-6 parts of calcined kaolin, 8-12 parts of heavy calcium, 6-8 parts of titanium dioxide, 0.5-0.7 parts of dodecyl alcohol ester, 0.3-0.5 parts of propylene glycol, and 20-30 parts of formaldehyde removal and deodorizing agent; The formaldehyde-removing and deodorizing agent comprises polypropylene mesh fibers, nano-titanium dioxide-modified diatomaceous earth and mica flakes, and the weight ratio of the polypropylene mesh fibers, the nano-titanium dioxide-modified diatomaceous earth and the mica flakes is 1:3:

1.

2. The formaldehyde-removing and odor-removing home decoration coating according to claim 1, characterized in that: The preparation method of the nano titanium dioxide modified diatomite is: The diatomaceous earth powder is subjected to a pretreatment operation of drying and sieving; Tetrabutyl titanate was added dropwise to anhydrous ethanol, and the mixture was stirred continuously to completely dissolve the tetrabutyl titanate. Nitric acid was added and the mixture was stirred continuously until a transparent sol was formed. The pretreated diatomite powder is added to the tetrabutyl titanate sol, and the mixture is stirred evenly, and nitric acid is added to adjust the pH to 4 to obtain a mixture; The mixture was allowed to stand for 24 hours to fully age, then centrifuged, washed, dried, and then calcined at 450°C in an air atmosphere for 3 hours; After cooling to room temperature, the mixture was taken out and ground to obtain nano-titanium dioxide modified diatomaceous earth, wherein the weight ratio of nano-titanium dioxide to diatomaceous earth was 1:

9.

3. The formaldehyde-removing and odor-removing home decoration coating according to claim 2, characterized in that: The particle size of the nano titanium dioxide modified diatomaceous earth is 200-300 meshes.

4. The formaldehyde-removing and odor-removing home decoration coating according to claim 1, characterized in that: The latex paint also includes germanium stone powder, cellulose nano whiskers and porous ceramic particles. The weight of the germanium stone powder is 8 to 10 parts, the weight of the cellulose nano whiskers is 6 to 8 parts, and the weight of the porous ceramic particles is 6 to 8 parts.

5. The formaldehyde-removing and odor-removing home decoration coating according to claim 1, characterized in that: The preparation method of putty is: The polypropylene mesh fiber, nano-titanium dioxide modified diatomaceous earth and mica flakes are mixed evenly to prepare a formaldehyde deodorizer for later use; various raw materials are weighed according to the ratio, and the raw materials except water are mixed and stirred in a stirring container until uniform, so as to obtain putty powder; water is added to the stirring container in a stirring state until it is stirred evenly without bubbles, and the putty is prepared after standing for half an hour.

6. The formaldehyde-removing and odor-removing home decoration coating according to claim 1, characterized in that: The preparation method of latex paint is: Add water, hydroxyethyl cellulose, potassium polyacrylate, nonionic wetting agent and silicone defoamer in a dispersion container in sequence, and disperse at 800 r / min for 10 min until the mixture becomes a slurry; increase the speed to 1500 r / min, and add calcined kaolin, heavy calcium carbonate, titanium dioxide and formaldehyde remover in sequence, and disperse for 30 min; reduce the speed to 800 r / min, add acrylic emulsion, lauryl alcohol ester and propylene glycol, and mix well to obtain latex paint.

7. The formaldehyde-removing and odor-removing home decoration coating according to claim 4, characterized in that: The preparation method of latex paint is: Add water, hydroxyethyl cellulose, potassium polyacrylate, nonionic wetting agent and silicone defoamer in a dispersion container in turn, and disperse at 800 r / min for 10 min until the mixture is in a slurry state; increase the speed to 1500 r / min, and add calcined kaolin, heavy calcium, titanium dioxide, formaldehyde remover, germanium stone powder, cellulose nano whiskers and porous ceramic particles in turn, and disperse for 30 min; reduce the speed to 800 r / min, add acrylic emulsion, lauryl alcohol ester and propylene glycol, and mix well to obtain latex paint.

8. The construction process of the formaldehyde-removing and odor-removing home decoration coating according to any one of claims 1 to 7, characterized in that: The following steps are involved: Base treatment: The base must be dry, flat and clean; Scrape putty: prepare putty, scrape it in the order of horizontal and vertical, scrape it three times, wait for the putty to dry, grind it flat and clean the dust before scraping it again. The thickness of the putty layer is 3mm, and the putty layer must be smooth, flat and clean; Brushing latex paint: prepare latex paint and apply it. Apply the second coat after the first coat has dried. The interval between two coats is 3 hours. Apply three times in total. When painting, be careful not to have obvious brush marks and flow marks. The thickness of the latex paint layer is 1mm.

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