Solvent-free epoxy anti-static floating color sand self-leveling paint and preparation method thereof

Abstract

The invention discloses solvent-free epoxy anti-static floating color sand self-leveling paint and a preparation method thereof, and belongs to the technical field of epoxy anti-static terraces. The component A comprises single-walled carbon nanotube conductive paste and anti-static floating resin colored sand, the component B comprises modified alicyclic amine, the component C comprises one of quartz sand, carborundum and hollow glass beads, and the raw materials of the single-walled carbon nanotube conductive paste in the component A are pretreated for 10 minutes by ultrasonic waves of 19-23 kHz. According to the technical scheme, under the condition that the static dissipative type requirement that the anti-static performance is 1 * 10 < 6 >-1 * 10 < 9 > omega in the standard of GB / T 22374-2018 terrace coating materials is met, the requirement of clean workshops for the surface roughness of the materials can be met, and meanwhile a larger tolerance level is achieved for the color diversity of products.

Description

Technical Field

[0001] The invention belongs to the technical field of epoxy antistatic flooring, and specifically relates to a solvent-free epoxy antistatic floating colored sand self-leveling surface paint and a preparation method thereof. Background Art

[0002] In high-end manufacturing, with the increasing demand for electrostatic protection, epoxy anti-static self-leveling and anti-static super wear-resistant products have been widely used. However, while achieving functionality, these products often sacrifice a certain degree of decorativeness. In particular, the conductive materials in them limit the diversity of product colors. Currently, most of them can only be adjusted to dark colors, which is difficult to meet the market's demand for a wider range of colors and higher decorativeness.

[0003] Patent application publication CN111777913A discloses a method for preparing electrostatically protected epoxy self-leveling colored sand, but the technical solution has the following problems:

[0004] 1. The color of the paint is too dark: Due to the use of conductive graphite as the conductive material, the color of the product is darker, which limits its use in decorative applications that require lighter colors.

[0005] 2. Surface flatness problem: Colored sand accounts for more than 40%, which not only increases the difficulty of construction, but also makes it more likely to leak sand and aggregate when the base surface is uneven. This results in the surface of the final coating being not flat and smooth enough, and cannot meet the clean workshop's requirements for high cleanliness and aesthetics. Summary of the invention

[0006] The purpose of the present invention is to overcome the problems of too dark color and surface flatness of the existing products, and provide a solvent-free epoxy anti-static floating colored sand self-leveling flat paint and a preparation method thereof. The technical solution of the present invention meets the anti-static performance of 1×10 6 ~1×10 9 While meeting the electrostatic dissipation requirements of Ω, it can also meet the clean workshop's requirements for material surface roughness, while also having a greater tolerance for product color diversity.

[0007] To solve the above problems, the present invention is implemented through the following technical solutions:

[0008] The first object of the present invention is:

[0009] Provided is a solvent-free epoxy antistatic floating colored sand self-leveling flat paint, which comprises the following components in parts by weight:

[0010] Component A:

[0011] Resin 30-40 parts, benzyl alcohol 3-4 parts, ethylene glycol glycidyl ether 4-5 parts, dispersant 0.3-0.5 parts, single-walled carbon nanotube conductive paste 0.03-0.2 parts, defoamer 0.2-1 parts, leveling agent 0.1-0.5 parts, anti-settling agent 0.1-0.5 parts, barium sulfate 30-40 parts, wax powder 0.1-0.5 parts, anti-static floating resin colored sand 10-20 parts, color paste 2-5 parts;

[0012] The resin is one of Nan Ya 128 epoxy resin, Yangnong YN-1828 resin, and Aimonte EMTE 128 epoxy resin;

[0013] Component B: 100 parts of 5-amino-1,3,3-trimethylcyclohexanemethylamine;

[0014] Component C: 100 parts of one of 80-120 mesh quartz sand, 80-120 mesh corundum, and 80-120 mesh hollow glass microspheres;

[0015] The weight ratio of component A, component B and component C is: 4-6:1:0.65-1;

[0016] The single-walled carbon nanotube conductive paste comprises the following components in parts by weight:

[0017] 2-5 parts of polymer dispersant, 1-2 parts of sodium dodecyl sulfate, 94-96 parts of 2-N-methylpyrrolidone (NMP), 2-5 parts of single-walled carbon nanotubes (SWCNT);

[0018] The polymer dispersant is one of Lubrizol 5000S, BYK-110, and Uniqsperse 560S dispersants;

[0019] The raw materials of the single-walled carbon nanotube conductive paste are pretreated with 19-23kHz ultrasound for 10 minutes;

[0020] The antistatic floating resin colored sand comprises the following components in parts by weight:

[0021] 70-80 parts of PMMA resin, 3-5 parts of nitrile rubber, 5-8 parts of single-walled carbon nanotube conductive paste, 2-3 parts of triphenyl phosphate, 5-10 parts of silicon powder, and 2-8 parts of pigment.

[0022] The solvent-free epoxy antistatic floating colored sand self-leveling flat paint of the present invention is further optimized as follows:

[0023] The PMMA resin is Asahi Kasei SR8500, One of MG555 and LG Chemical HI535 resins.

[0024] The second object of the present invention is:

[0025] Provided is a method for preparing the aforementioned solvent-free epoxy antistatic floating colored sand self-leveling flat paint, which comprises the following preparation steps:

[0026] S1. The resin, benzyl alcohol, ethylene glycol glycidyl ether, dispersant and single-walled carbon nanotube conductive paste are mixed in proportion and dispersed at a stirring speed of 2000 to 2500 rpm for 30 minutes;

[0027] S2. Add defoamer, leveling agent and anti-settling agent, and disperse at 1000-1600 rpm for 10 minutes;

[0028] S3. Add barium sulfate and wax powder and disperse again at 2000-2500 rpm for 30 minutes;

[0029] S4. Add antistatic floating resin colored sand and color paste, disperse at a speed of 1000 to 1600 rpm for 20 minutes to obtain the A component;

[0030] The A component, the B component and the C component are mixed in proportion to prepare the solvent-free epoxy anti-static floating colored sand self-leveling surface paint.

[0031] The preparation method of the solvent-free epoxy antistatic floating colored sand self-leveling flat paint of the present invention is further optimized as follows:

[0032] The preparation method of the single-walled carbon nanotube conductive paste:

[0033] It comprises the following preparation steps:

[0034] A1. Add the polymer dispersant and sodium dodecyl sulfate to 2-N-methylpyrrolidone in proportion, and mechanically disperse at a speed of 1000 to 1600 rpm for 10 minutes;

[0035] A2. Add single-walled carbon nanotubes and continue mechanical dispersion at 1000-1600 rpm for 10 minutes;

[0036] A3. The mixture was pretreated with 19-23kHz ultrasound for 10 minutes;

[0037] A4. Grind the ultrasonically treated mixture using a horizontal sand mill for 20 minutes;

[0038] A5. Filter the ground mixture through a 300 μm filter to obtain a single-walled carbon nanotube conductive slurry.

[0039] The preparation method of the solvent-free epoxy antistatic floating colored sand self-leveling flat paint of the present invention is further optimized as follows:

[0040] The preparation method of the anti-static floating resin colored sand:

[0041] It comprises the following preparation steps:

[0042] B1. Gradually heat the PMMA resin to 200°C in proportion to soften it and avoid automatic decomposition or uneven melting;

[0043] B2. Further heat the PMMA resin to 220°C to ensure that it is completely melted and flows evenly;

[0044] B3. Add nitrile rubber, single-walled carbon nanotube conductive paste, triphenyl phosphate, silicon powder and pigment to the molten PMMA resin and mechanically disperse at a speed of 1000 to 1600 rpm for 20 minutes to mix evenly;

[0045] B4. Reheat the mixture to 230°C, extrude it through a screw extruder, and then crush and sieve it into 40 to 80 mesh resin sand particles to obtain the antistatic floating resin colored sand.

[0046] The technical solution of the present invention has the following beneficial effects:

[0047] 1. Single-walled carbon nanotubes have high conductivity and excellent dispersibility after ultrasonic treatment. When added in small amounts, they have little effect on the color of the paint, thus maintaining the aesthetics of the product.

[0048] 2. By using anti-static floating resin colored sand (anti-static lightweight resin colored sand) and precisely controlling the density of anti-static floating resin colored sand and the density of component A in solvent-free epoxy anti-static floating colored sand self-leveling flat paint, the resin colored sand can slowly float to the middle and upper layers of the paint film during the drying process of the paint film, thereby obtaining a smooth paint film surface and ensuring the stability of resistance.

[0049] 3. By adding quartz sand, corundum or hollow glass microspheres, the mechanical properties of the paint film are improved, and the gaps with the conductive materials form a conductive network in the paint film, effectively reducing the resistance and achieving a balance between the color diversity of the paint and good resistance. Its mechanical properties and construction performance meet the standards of GB / T22374-2018 floor coating materials, and the anti-static performance meets 1×10 6 ~1×10 9 The electrostatic dissipation requirement of Ω is met, and there is no blind spot as a whole, which meets the high standard requirements of clean workshops for high cleanliness and aesthetics.

[0050] The technical solution of the present invention not only realizes the anti-static function of the product, but also meets the market's growing demand for decorativeness and aesthetics. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not limited to the present invention. All simple improvements to the preparation method of the present invention under the premise of the present invention's conception belong to the protection scope of the present invention.

[0052] Example 1

[0053] A method for preparing a solvent-free epoxy antistatic floating colored sand self-leveling flat paint, comprising the following components in parts by weight:

[0054] Component A:

[0055] Resin 38 parts, benzyl alcohol 4 parts, ethylene glycol glycidyl ether 5 parts, dispersant 0.5 parts, single-walled carbon nanotube conductive paste 0.08 parts, defoamer 0.3 parts, leveling agent 0.3 parts, anti-settling agent 0.1 parts, barium sulfate 38.42 parts, wax powder 0.3 parts, anti-static floating resin colored sand 10 parts, color paste 3 parts;

[0056] The resin is Nan Ya 128 epoxy resin;

[0057] Component B: 100 parts of 5-amino-1,3,3-trimethylcyclohexanemethylamine;

[0058] Component C: 100 parts of 80-120 mesh quartz sand;

[0059] The weight ratio of component A, component B and component C is: 4.5:1:1;

[0060] It comprises the following preparation steps:

[0061] S1. The resin, benzyl alcohol, ethylene glycol glycidyl ether, dispersant and single-walled carbon nanotube conductive paste were mixed in proportion and dispersed at 2500 rpm for 30 minutes;

[0062] S2. Add defoamer, leveling agent and anti-settling agent and disperse at 1600 rpm for 10 minutes;

[0063] S3. Add barium sulfate and wax powder and disperse again at 2500 rpm for 30 minutes;

[0064] S4. Add antistatic floating resin colored sand and color paste and disperse at 1600 rpm for 20 minutes to obtain the A component;

[0065] The A component, the B component and the C component are mixed in a ratio of 4.5:1:1 to prepare the solvent-free epoxy anti-static floating colored sand self-leveling surface paint.

[0066] The single-walled carbon nanotube conductive paste comprises the following components in parts by weight:

[0067] 2 parts of Lubrizol 5000S, 1 part of sodium lauryl sulfate, 95 parts of 2-N-methylpyrrolidone (NMP), 2 parts of single-walled carbon nanotubes (SWCNT);

[0068] The preparation method of the single-walled carbon nanotube conductive paste:

[0069] It comprises the following preparation steps:

[0070] A1. Add Lubrizol 5000S and sodium lauryl sulfate to 2-N-methylpyrrolidone in proportion and mechanically disperse at 1600 rpm for 10 minutes;

[0071] A2. Add single-walled carbon nanotubes and continue mechanical dispersion at 1600 rpm for 10 minutes;

[0072] A3. The mixture was pretreated with 19-23kHz ultrasound for 10 minutes;

[0073] A4. Grind the ultrasonically treated mixture using a horizontal sand mill for 20 minutes;

[0074] A5. Filter the ground mixture through a 300 μm filter to obtain a single-walled carbon nanotube conductive slurry.

[0075] The antistatic floating resin colored sand comprises the following components in parts by weight:

[0076] LG Chemical HI535 PMMA resin 78 parts, nitrile rubber 3 parts, single-walled carbon nanotube conductive paste 7 parts, triphenyl phosphate 2 parts, silicon micropowder 5 parts, pigment 5 parts.

[0077] The preparation method of the anti-static floating resin colored sand:

[0078] It comprises the following preparation steps:

[0079] B1. Gradually heat the PMMA resin to 200°C in proportion to soften it and avoid automatic decomposition or uneven melting;

[0080] B2. Further heat the PMMA resin to 220°C to ensure that it is completely melted and flows evenly;

[0081] B3. The nitrile rubber, single-walled carbon nanotube conductive paste, triphenyl phosphate, silicon powder and pigment were added to the molten PMMA resin and mechanically dispersed at a speed of 1600 rpm for 20 minutes to mix evenly;

[0082] B4. Reheat the mixture to 230°C, extrude it through a screw extruder, and then crush and sieve it into resin sand particles of 40 to 80 meshes to obtain anti-static floating resin colored sand.

[0083] The prepared solvent-free epoxy anti-static floating colored sand self-leveling flat paint has a surface area of ​​2.0 kg / m 2 The surface resistance is 5.67×10 6 ~9.87×10 6 Ohms, the resistance is stable, there is no blind spot, the surface floating sand is uniform and there is no floating color, and the paint film is smooth and flat.

[0084] Comparative Example 1

[0085] The composition and preparation method of Comparative Example 1 are the same as those of Example 1, except that the preparation of the single-walled carbon nanotube conductive paste in Comparative Example 1 does not use ultrasonic pretreatment, and the actual preparation steps are as follows:

[0086] Add Lubrizol 5000S and sodium lauryl sulfate to 2-N-methylpyrrolidone in proportion, and disperse mechanically at 1600 rpm for 10 minutes;

[0087] A2. Add single-walled carbon nanotubes and continue mechanical dispersion at 2500 rpm for 30 minutes;

[0088] A3. Grind the mixture using a horizontal sand mill for 20 minutes;

[0089] A4. Filter the ground mixture through a 300 μm filter to obtain a single-walled carbon nanotube conductive slurry.

[0090] The paint film made by the conductive paste has a heat release rate of 2.0 kg / m 2 The surface resistance is 1.89×10 7 ~7.68×10 9 Comparative Example 1 proves that single-walled carbon nanotubes are difficult to disperse simply by ordinary machinery, which will eventually lead to the paint film having high resistance and many blind spots.

[0091] Comparative Example 2

[0092] Comparative Example 2 has the same composition and preparation method as Example 1, except that:

[0093] In Comparative Example 2, an equal amount of conventional 40-80 mesh PMMA resin colored sand was used to replace the antistatic floating resin colored sand in Example 1.

[0094] The paint film made of conventional PMMA resin is easy to float to the surface of the paint film during the curing process of the material due to the low density of PMMA resin, thereby blocking the conductive path and affecting the actual resistance. 2 The surface resistance is 8.98×108 ~5.16×10 10 Ohms, and there are many blind spots and the resistance is unstable.

[0095] Comparative Example 3

[0096] The composition and preparation method of Comparative Example 3 are the same as those of Example 1, except that:

[0097] In comparative example 3, the solvent-free epoxy antistatic floating colored sand self-leveling surface paint was constructed without adding component C in embodiment 1, and the weight ratio of component A to component B was 4.5:1.

[0098] The paint film prepared in Comparative Example 3 was 2.0 kg / m 2 The surface resistance is 5.12×10 7 ~1.65×10 8 Ohm, no blind spots. This shows that the quartz sand in component C not only improves the mechanical properties of the paint film, but also forms a parallel conductive network in the paint film with its gap matching conductive materials, which can effectively reduce the resistance and achieve a balance between the color diversity of the paint and good resistance.

[0099] To sum up, the above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the disclosed technical content are regarded as equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

[0100] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The experimental methods without specific conditions in the present invention are usually carried out under conventional conditions or conditions recommended by the manufacturer.

[0102] Unless otherwise stated, the various optimization technical solutions in the present invention can be combined with each other.

[0103] Unless otherwise indicated, percentages and parts are by weight.

[0104] Experimental methods without specific conditions specified in the instructions and examples are usually carried out under conventional conditions or conditions recommended by the manufacturers.

[0105] Unless otherwise specified, various raw materials, reagents and components used in the present invention are corresponding raw materials commonly used in the art.

[0106] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any method and material similar or equivalent to the described content can be applied to the method of the present invention.

Claims

1. A solvent-free epoxy anti-static floating colored sand self-leveling flat paint, characterized by: It includes the following components by weight: Component A: Resin 30-40 parts, benzyl alcohol 3-4 parts, ethylene glycol glycidyl ether 4-5 parts, dispersant 0.3-0.5 parts, single-walled carbon nanotube conductive paste 0.03-0.2 parts, defoamer 0.2-1 parts, leveling agent 0.1-0.5 parts, anti-settling agent 0.1-0.5 parts, barium sulfate 30-40 parts, wax powder 0.1-0.5 parts, anti-static floating resin colored sand 10-20 parts, color paste 2-5 parts; The resin is one of Nan Ya 128 epoxy resin, Yangnong YN-1828 resin, and Aimonte EMTE 128 epoxy resin; Component B: 100 parts of 5-amino-1,3,3-trimethylcyclohexanemethylamine; Component C: 100 parts of one of 80-120 mesh quartz sand, 80-120 mesh corundum, and 80-120 mesh hollow glass microspheres; The weight ratio of component A, component B and component C is: 4-6:1:0.65-1; The single-walled carbon nanotube conductive paste comprises the following components in parts by weight: 2-5 parts of polymer dispersant, 1-2 parts of sodium dodecyl sulfate, 94-96 parts of 2-N-methylpyrrolidone, and 2-5 parts of single-walled carbon nanotubes; The polymer dispersant is one of Lubrizol 5000S, BYK-110, and Uniqsperse 560S dispersants; The raw materials of the single-walled carbon nanotube conductive paste are pretreated with 19-23kHz ultrasound for 10 minutes; The antistatic floating resin colored sand comprises the following components in parts by weight: 70-80 parts of PMMA resin, 3-5 parts of nitrile rubber, 5-8 parts of single-walled carbon nanotube conductive paste, 2-3 parts of triphenyl phosphate, 5-10 parts of silicon powder, and 2-8 parts of pigment.

2. The solvent-free epoxy antistatic floating colored sand self-leveling flat paint according to claim 1 is characterized in that: The PMMA resin is Asahi Kasei SR8500, One of MG555 and LG Chemical HI535 resins.

3. A method for preparing the solvent-free epoxy antistatic floating colored sand self-leveling flat paint according to claim 1, characterized in that: It comprises the following preparation steps: S1. The resin, benzyl alcohol, ethylene glycol glycidyl ether, dispersant and single-walled carbon nanotube conductive paste are mixed in proportion and dispersed at a stirring speed of 2000 to 2500 rpm for 30 minutes; S2. Add defoamer, leveling agent and anti-settling agent, and disperse at 1000-1600 rpm for 10 minutes; S3. Add barium sulfate and wax powder and disperse again at 2000-2500 rpm for 30 minutes; S4. Add antistatic floating resin colored sand and color paste, disperse at a speed of 1000 to 1600 rpm for 20 minutes to obtain the A component; The A component, the B component and the C component are mixed in proportion to prepare the solvent-free epoxy anti-static floating colored sand self-leveling surface paint.

4. The method for preparing the solvent-free epoxy antistatic floating colored sand self-leveling flat paint according to claim 3, characterized in that: The preparation method of the single-walled carbon nanotube conductive paste: It comprises the following preparation steps: A1. Add the polymer dispersant and sodium dodecyl sulfate to 2-N-methylpyrrolidone in proportion, and mechanically disperse at a speed of 1000 to 1600 rpm for 10 minutes; A2. Add single-walled carbon nanotubes and continue mechanical dispersion at 1000-1600 rpm for 10 minutes; A3. The mixture was pretreated with 19-23kHz ultrasound for 10 minutes; A4. Grind the ultrasonically treated mixture using a horizontal sand mill for 20 minutes; A5. Filter the ground mixture through a 300 μm filter to obtain a single-walled carbon nanotube conductive slurry.

5. The method for preparing the solvent-free epoxy antistatic floating colored sand self-leveling flat paint according to claim 3, characterized in that: The preparation method of the anti-static floating resin colored sand: It comprises the following preparation steps: B1. Gradually heat the PMMA resin to 200°C in proportion to soften it and avoid automatic decomposition or uneven melting; B2. Further heat the PMMA resin to 220°C to ensure that it is completely melted and flows evenly; B3. Add nitrile rubber, single-walled carbon nanotube conductive paste, triphenyl phosphate, silicon powder and pigment to the molten PMMA resin and mechanically disperse at a speed of 1000 to 1600 rpm for 20 minutes to mix evenly; B4. Reheat the mixture to 230°C, extrude it through a screw extruder, and then crush and sieve it into 40 to 80 mesh resin sand particles to obtain the antistatic floating resin colored sand.