Environment-friendly real stone paint and preparation method thereof

Abstract

The invention provides environment-friendly real stone paint and a preparation method thereof, and relates to the technical field of real stone paint preparation. The real stone paint is prepared from the following raw materials in parts by weight: 25-30 parts of a base material, 70-75 parts of a modified sand material and 0.1-0.2 part of a defoaming agent, the base material is prepared from the following raw materials in parts by weight: 30 to 50 parts of deionized water, 0.5 to 0.8 part of hydroxyethyl cellulose ether, 0.1 to 0.5 part of bentonite, 44 to 48 parts of styrene-acrylic emulsion and 4.9 to 7.1 parts of an auxiliary agent. According to the invention, the defects in the prior art are overcome, the modified sand material is adopted to replace natural colored sand, the reflective insulation performance is provided on the basis of improving the water resistance, alkali resistance and acid resistance of the real stone paint, and the application value of the real stone paint is comprehensively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of real stone paint preparation, in particular to an environment-friendly real stone paint and a preparation method thereof. BACKGROUND

[0002] Real stone paint is a kind of paint with a decorative effect similar to marble or granite, which is mainly made of high molecular polymer, colored sand and related additives.

[0003] The colored sand used for real stone paint is mainly divided into natural colored sand and artificial colored sand. The natural colored sand is mainly made by crushing and screening natural ore, which mainly absorbs visible light and infrared light, and almost cannot reflect heat. In the process of making artificial colored sand, resin is used to cure the colored sand, and solvent-based resin is used for color curing. Since the solvent-based resin is mainly composed of organic components, the use of traditional solvent-based resin in the sand dyeing process and subsequent use not only harms the health of the operators, but also pollutes the environment. Therefore, an environment-friendly and healthy finished real stone paint with heat reflection effect is needed. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an environment-friendly real stone paint and a preparation method thereof to achieve the above purposes. The present application is realized by the following technical scheme: An environment-friendly real stone paint, which is composed of the following raw materials in parts by weight: base material 25-30 parts, modified sand 70-75 parts, and defoaming agent 0.1-0.2 parts. The base material is composed of the following raw materials in parts by weight: deionized water 30-50 parts, hydroxyethyl cellulose ether 0.5-0.8 parts, bentonite 0.1-0.5 parts, benzyl lactam 44-48 parts, and auxiliary agent 4.9-7.1 parts. The modified sand is composed of the following raw materials in parts by weight: water 15-20 parts, bentonite 0.5-1.5 parts, dispersing agent 0.5-1.0 parts, heat reflection material 20-40 parts, artificial colored sand latex 25-45 parts, defoaming agent 0.1-0.2 parts, thickening agent 0.8 parts, crosslinking agent 0.1-0.3 parts, white sand 97 parts, and color paste 2.1-2.4 parts.

[0005] Preferably, the heat reflection material is a mixture of titanium white ALTIRIS W400 and boron nitride RH-D in a mass ratio of 6:3.

[0006] Preferably, the auxiliary agent is composed of the following raw materials in parts by weight: dodecanol ester 2.5-3 parts, ethylene glycol 2-3 parts, bactericide 0.2-0.5 parts, and wetting agent 0.2-0.6 parts.

[0007] Preferably, the white sand is snow white, wherein the added mesh number of snow white and the mass ratio of each mesh number is: 40-60 mesh: 60-80 mesh: 80-100 mesh = 35:30:35.

[0008] Preferably, the crosslinking agent is RS-0569 crosslinking agent.

[0009] Preferably, the specific preparation method of the modified sand material comprises the following steps: S1-1, put the formula amount of water into the disperser, adjust the speed to 500 r / min, add the formula amount of bentonite, dispersant, reflective heat insulation material, after the addition is completed, adjust the speed to 1000-1200 r / min, run for 20-30 min, after the fineness of the material in the disperser is less than 50 μm, adjust the speed of the disperser to 400-500 r / min, add artificial sand dyeing latex, defoaming agent, thickening agent, disperse for 5 min, and get the sand dyeing base material; S1-2, take 1 / 2 of the above sand dyeing base material to the disperser, add 2 / 3 of the color paste, adjust the speed to 500 r / min, until the color paste is uniform, add the crosslinking agent and disperse uniformly, get the slurry, take another dispersing cylinder, add white sand and slurry, stir uniformly, stand for 20 min, put into the oven at 80℃ for drying, get the dried sand; S1-3, mix the remaining sand dyeing base material with the remaining color paste, spray on the above dried sand, vacuum dry, get the modified sand material.

[0010] Preferably, the stirring speed after adding white sand and slurry in step S1-2 is 300-400 r / min, and the stirring time is 20-30 min.

[0011] Preferably, the vacuum drying in step S1-3 is under the environment of 0.05-0.08 MPa, the temperature value is adjusted to 40-60℃, and the drying time is 30-45 min.

[0012] A preparation method of a real stone paint comprises the following steps: (1) add the formula amount of deionized water in the dispersing cylinder, adjust the speed of the high-speed disperser to 200~400 r / min, add bentonite and hydroxyethyl cellulose ether, adjust the speed to 1000 r / min, stir for 3 min, add the auxiliary agent and the styrene-acrylic emulsion, stir for 5 min, and get the base material; (2) add the formula amount of the base material in the dispersing cylinder, after adjusting the speed to 300-500 r / min, stir for 5 min, add the defoaming agent and the modified sand material, stir for 3 min, and the real stone paint product is prepared.

[0013] Preferably, the defoaming agent in step (2) is mineral oil defoaming agent NXZ, and the thickening agent is non-ionic polyurethane associated thickening agent 8W.

[0014] The present application provides an environment-friendly stone paint and a preparation method thereof, which has the following advantages compared with the prior art: The present application utilizes the double wrapping treatment of the modified sand material to form the effects of inner layer penetration and outer layer reinforcement, improve the bonding degree of the sand and the base material, improve the adhesion of the stone paint, and optimize the uniformity and tightness of the base material attached to the sand.

[0015] The present application uses modified sand material to replace natural colored sand, provides reflection and heat insulation performance on the basis of improving the water resistance, alkali resistance and acid resistance of the stone paint, and comprehensively improves the application value of the stone paint. DETAILED DESCRIPTION

[0016] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] The defoaming agent used in the present application is all DE NXZ mineral oil defoaming agent of BASF brand, the hydroxyethyl cellulose ether is 250HBR hydroxyethyl cellulose ether of Ashland brand, the bentonite is RT-1 bentonite of Himmels, the styrene-acrylic emulsion is DC420 styrene-acrylic emulsion of Dow brand, the dispersing agent is fast dispersing agent of Dow, the titanium white is ALTIRIS W400 infrared reflective titanium white of HENSGMA brand, the boron nitride is RH-D boron nitride of RIKEN, the artificial sand dyeing latex is RS-6000B artificial sand dyeing latex of SONGYE brand, the thickening agent is 8W thickening agent of Dow brand, the crosslinking agent is RS-0569 crosslinking agent of SONGYE brand, the crosslinking agent used in the preparation of modified sand material D is CYD-N1638 polyamine hyperbranched crosslinking agent of Weihai Chen Yuan, the white sand is XUEHUABAI of 50 mesh, 70 mesh and 90 mesh of RONGTAI, the color paste is non-black water-based color paste of SHIMING, the dodecanol ester is CS-12 dodecanol ester of KOHLER, the bactericide is NT-12S bactericide of PENGTU brand, the natural colored sand is quartz sand, and the wetting agent is LCN407 alkyl polyvinyl ether.

[0018] Preparation of raw materials: 1. Preparation of modified sand material: 1.1. Preparation of modified sand material A; Specific preparation method of modified sand material: S1-1, according to the following weight parts of raw materials: water 18 parts, bentonite 1 part, dispersing agent 0.7 parts, reflective heat insulation material 30 parts, artificial sand dyeing latex 32 parts, defoaming agent 0.15 parts, thickening agent 0.8 parts, RS-0569 crosslinking agent 0.2 parts, snow white 97 parts, color paste 2.2 parts; S1-2, put the formula amount of water into the disperser, adjust the speed to 500 r / min, add the formula amount of bentonite, dispersing agent and reflective heat insulation material, after the addition is completed, adjust the speed to 1100 r / min, run for 20-30 min, after the fineness of the material in the disperser is less than 50 μm, adjust the speed of the disperser to 450 r / min, add artificial sand dyeing latex, defoaming agent and thickening agent, disperse for 5 min, and get sand dyeing base material; S1-3, take 1 / 2 of the sand dyeing base material above to the disperser, add 2 / 3 of the color paste, adjust the speed to 500 r / min until the color paste is uniform, add the crosslinking agent and disperse uniformly to get slurry, take another dispersing cylinder, add snow white and the slurry, adjust the speed to 350 r / min, stir for 25 min, stand for 20 min, put into an oven at 80℃ for drying, and get dried sand; S1-4, mix the remaining sand dyeing base material with the remaining color paste, spray on the dried sand above, adjust the temperature value to 50℃ under the environment of 0.06 MPa, and dry for 40 min to get modified sand material.

[0019] 1.2, preparation of modified sand material B: The preparation of modified sand material B refers to the method of the preparation of modified sand material A, adjusts S1-3 and cancels S1-4, and the other steps are the same.

[0020] S1-3, take the sand dyeing base material above to the disperser, add the color paste, adjust the speed to 500 r / min until the color paste is uniform, add the crosslinking agent and disperse uniformly to get slurry, take another dispersing cylinder, add snow white and the slurry, adjust the speed to 350 r / min, stir for 25 min, stand for 20 min, put into an oven at 80℃ for drying, and get modified sand material; 1.3, preparation of modified sand material C: The preparation of modified sand material C refers to the method of the preparation of modified sand material A, adjusts S1-3 and S1-4, and the other steps are the same.

[0021] S1-3, take 1 / 2 of the sand dyeing base material above to the disperser, add 2 / 3 of the color paste, adjust the speed to 500 r / min until the color paste is uniform, add the crosslinking agent and disperse uniformly to get slurry, take another dispersing cylinder, add snow white and the slurry, adjust the speed to 350 r / min, stir for 25 min, stand for 20 min, and get pre-preparation material; S1-4, mix the remaining sand base with the remaining color paste, spray on the above prepared material, in the environment of 0.06 MPa, adjust the temperature value to 50℃, dry for 40 min, to obtain the modified sand material.

[0022] 1.4, preparation of modified sand material D: The preparation of modified sand material D refers to the method of preparation of modified sand material A, only the RS-0569 crosslinking agent is replaced by CYD-N1638 crosslinking agent, and the other steps are the same.

[0023] Example 1: A preparation method of an environment-friendly real stone paint: (1) The raw materials are prepared according to the following weight parts: base 30 parts, modified sand material A 75 parts, defoaming agent 0.2 parts; The base is prepared according to the following weight parts of raw materials: deionized water 50 parts, hydroxyethyl cellulose ether 0.8 parts, bentonite 0.5 parts, benzene propyl emulsion 48 parts, dodecanol ester 3 parts, ethylene glycol 3 parts, bactericide 0.5 parts, wetting agent 0.4 parts; (2) Add the formula amount of deionized water in the dispersion cylinder, adjust the speed of the high-speed dispersion machine to 300 r / min, add bentonite and hydroxyethyl cellulose ether, adjust the speed to 1000 r / min, stir for 3 min, add dodecanol ester, ethylene glycol, bactericide and benzene propyl emulsion, stir for 5 min, to obtain the base; (3) Add the formula amount of base in the dispersion cylinder, adjust the speed to 400 r / min, stir for 5 min, add defoaming agent and modified sand material, stir for 3 min to obtain the real stone paint product.

[0024] Example 2: This example refers to the method of example 1 to prepare the real stone paint, wherein the modified sand material is selected as modified sand material A, and only the ratio of each raw material is different, and the other steps are the same as example 1, and the specific raw material ratio is: Base 25 parts, modified sand material A 70 parts, defoaming agent 0.1 parts; The raw material ratio of the base is: deionized water 30 parts, hydroxyethyl cellulose ether 0.5 parts, bentonite 0.1 parts, benzene propyl emulsion 44 parts, dodecanol ester 2.5 parts, ethylene glycol 2 parts, bactericide 0.2 parts; Comparative example 1: This comparative example refers to the method of example 1 to prepare the real stone paint, only the modified sand material A is replaced by natural color sand, and the other steps are the same as example 1.

[0025] Comparative example 2: This comparative example refers to the method of example 1 to prepare the real stone paint, only the modified sand material A is replaced by modified sand material B, and the other steps are the same as example 1.

[0026] Comparative Example 3: This comparative example refers to the method of Example 1 to prepare the stone-like paint, only the modified sand A is replaced by modified sand C, and other steps are the same as Example 1.

[0027] Comparative Example 4: This comparative example refers to the method of Example 1 to prepare the stone-like paint, only the modified sand A is replaced by modified sand D, and other steps are the same as Example 1.

[0028] Test: 1. The stone-like paint products prepared according to Examples 1, 2 and Comparative Examples 1-4 were respectively sprayed on asbestos cement boards, and then placed in an oven at 55°C for drying for 24h to prepare test boards.

[0029] 2. Reflective thermal insulation performance: according to GB / T 25261-2018, the brightness L*, solar reflectance, near-infrared reflectance, and hemispherical reflectivity of the test sample were tested. The specific results are shown in Table 1 below: Table 1 From the above table, it can be seen that the stone-like paint of Example 1 has good reflective thermal insulation performance.

[0030] 3. Mechanical stability: using the finished stone-like paint prepared according to Examples 1, 2 and Comparative Examples 1-4, after uniform stirring by machine, an appropriate amount of defoaming agent was added, 100 g of mixed sand was taken as a standard sample, the remaining was stirred at 1000 r / min for 30 min, and an appropriate amount of defoaming agent was added, the sample and the standard sample were coated on a bimodal card. The color difference before and after stirring was tested by spectrophotometer to judge the stability of the sand-dyed finished stone-like paint, and the specific results are shown in Table 2 below: Table 2 From the above table, it can be seen that the stone-like paint of Example 1 has good mechanical stability.

[0031] 4. Water resistance, acid resistance and alkali resistance: the test boards were respectively soaked in water for 96 h, in a pH value = 3 acetic acid solution for 72 h, and in a 5% calcium hydroxide aqueous solution for 72 h, and the discoloration of the stone-like paint and the bleeding phenomenon of the solution were observed, and the specific results are shown in Table 3 below: Table 3 From the above table, it can be seen that the stone-like paint of Example 1 has good water resistance, acid resistance and alkali resistance.

[0032] 5. Adhesion strength test: according to 7.17 in standard JG / T24-2018, the specific results are shown in Table 4 below: Table 4 From the above table, the true stone paint of Example 1 has better bonding strength.

[0033] The above examples are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An environmentally friendly real stone paint, characterized in that, The real stone paint is composed of the following raw materials in parts by weight: 25-30 parts of base material, 70-75 parts of modified sand material, and 0.1-0.2 parts of defoaming agent; The base material is composed of the following raw materials in parts by weight: 30-50 parts of deionized water, 0.5-0.8 parts of hydroxyethyl cellulose ether, 0.1-0.5 parts of bentonite, 44-48 parts of styrene-acrylic emulsion, and 4.9-7.1 parts of additives; The modified sand material is composed of the following raw materials in parts by weight: 15-20 parts of water, 0.5-1.5 parts of bentonite, 0.5-1.0 parts of dispersant, 20-40 parts of reflective insulation material, 25-45 parts of artificial dyed sand latex, 0.1-0.2 parts of defoamer, 0.8 parts of thickener, 0.1-0.3 parts of crosslinking agent, 97 parts of white sand, and 2.1-2.4 parts of color paste.

2. The real stone paint according to claim 1, characterized in that The reflective heat-insulating material is obtained by mixing titanium dioxide ALTIRIS W400 and boron nitride RH-D in a mass ratio of 6:

3.

3. The preparation method according to claim 1, characterized in that The auxiliary agent is composed of the following materials in parts by weight: 2.5-3 parts of dodecyl alcohol ester, 2-3 parts of ethylene glycol, 0.2-0.5 parts of bactericide, and 0.2-0.6 parts of wetting agent.

4. The real stone paint according to claim 1, characterized in that The white sand is snowflake white, wherein the added mesh number of the snowflake white and the mass ratio of each mesh number are: 40-60 mesh: 60-80 mesh: 80-100 mesh = 35:30:

35.

5. The real stone paint according to claim 1, characterized in that The cross-linking agent is RS-0569 cross-linking agent.

6. The real stone paint according to claim 1, characterized in that The specific preparation method of the modified sand material comprises the following steps: S1-1. Add the formulated amount of water into a disperser, adjust the speed to 500 r / min, add the formulated amount of bentonite, dispersant, and reflective insulation material, adjust the speed to 1000-1200 r / min after the addition is completed, and run for 20-30 minutes. After the fineness of the material in the disperser is less than 50 μm, adjust the disperser speed to 400-500 r / min, add artificial sand dyeing latex, defoamer, and thickener, and disperse for 5 minutes to obtain the sand dyeing base material; S1-2, weigh 1 / 2 of the above-mentioned dyed sand base material into a disperser, add 2 / 3 of the color paste, adjust the speed to 500r / min, until the color paste is uniform, add a cross-linking agent and disperse evenly to obtain a slurry, take another dispersion tank, add white sand and slurry, stir evenly, let it stand for 20 minutes, and put it into an 80°C oven for drying to obtain dried sand; S1-3. Take the remaining dyed sand base material and the remaining color paste, mix them evenly, spray them on the above-mentioned dried sand, and vacuum dry them to obtain modified sand material.

7. The real stone paint according to claim 6, characterized in that After adding the white sand and slurry in step S1-2, the stirring speed is 300-400 r / min and the stirring is carried out for 20-30 minutes.

8. The real stone paint according to claim 6, characterized in that The vacuum drying in step S1-3 is carried out under an environment of 0.05-0.08 MPa, with the temperature adjusted to 40-60° C., for 30-45 minutes.

9. A method for preparing the real stone paint according to any one of claims 1 to 8, characterized in that: The preparation method comprises the following steps: (1) Add the formulated amount of deionized water to the dispersion tank, adjust the speed of the high-speed disperser to 200-400 r / min, add bentonite and hydroxyethyl cellulose ether, adjust the speed to 1000 r / min, stir for 3 minutes, add the additives and styrene acrylic emulsion, stir for 5 minutes to obtain the base material; (2) Add the formulated amount of base material into the dispersion tank, adjust the speed to 300-500 r / min, stir for 5 minutes, add defoamer and modified sand, and stir for 3 minutes to obtain the finished product of real stone paint.

10. The preparation method according to claim 9, characterized in that The defoamer in step (2) is a mineral oil defoamer NXZ, and the thickener is a nonionic polyurethane associative thickener 8W.

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