A water-based colored sand suspension, its preparation method and application

Abstract

The present invention discloses a water-based colored sand suspending agent, a preparation method, and applications thereof. The water-based colored sand suspending agent is obtained by copolymerizing methoxy polyethylene glycol methacrylate, hexadecyl acrylate, and tetrahydrofuran methacrylate as monomers. When applied to a water-based epoxy colored sand flooring material system, the water-based colored sand suspending agent can help the colored sand achieve excellent suspension stability, allowing colored sand particles to quickly migrate to the surface and form a uniform distribution of the colored sand on the surface.

Description

Technical Field

[0001] The present application relates to the technical field of colored sand flooring, and in particular to a water-based colored sand suspension, a preparation method thereof, and applications thereof. Background Art

[0002] With the growing awareness of environmental protection, water-based floor paints are becoming increasingly popular among construction workers, especially when applying floor paint in enclosed spaces. While the current water-based floor paint market is rapidly developing, most are monochromatic, such as bright green or light gray. To enhance the decorative effect and reduce visual fatigue, a new type of colored sand floor paint has been developed. These paints incorporate natural mineral colored sand particles or synthetic polymer colored particles, either sprinkled later or directly incorporated into the floor paint, resulting in a beautifully uniform distribution of colored sand after curing.

[0003] In pre-dispersed colored sand floor paint, the even distribution of the colored sand within the system and the uniformity of the color on the surface directly impact the floor's aesthetics. Improving the uniform distribution of the colored sand within the system and maintaining good suspension are key factors in determining the quality of colored sand floors. Currently, the market offers both treated and untreated colored sand. However, even treated colored sand struggles to maintain good suspension within the system and achieve uniform surface consistency. This is especially true when constructing large areas, where uneven surfaces are inevitable. This can easily lead to accumulation of colored sand, causing color overflow, resulting in scraper marks, and floating color.

[0004] Suspending colored sand in waterborne epoxy flooring systems is more challenging than with solvent-based or solvent-free systems. Water introduced during the production and construction processes causes phase transitions from oil-in-water to water-in-oil. Overcoming the effects of water on the colored sand during the coating's drying and curing process directly impacts the uniformity of the colored sand's suspension within the waterborne epoxy system. Summary of the Invention

[0005] In order to achieve the uniformity of suspension of colored sand in a water-based epoxy colored sand floor material system, the present application provides a water-based colored sand suspending agent, a preparation method and an application thereof. The water-based colored sand suspending agent of the present application has excellent colored sand suspension properties. When applied to a water-based epoxy colored sand floor material system, the uniformity of suspension of colored sand can be achieved, thereby improving the batch stability of the production and construction of water-based epoxy colored sand floors.

[0006] On the one hand, the present application provides a water-based colored sand suspension agent, the structural formula of which is as follows:

[0007] (I)

[0008] Where p, z, m, and n are all integers. The value of p ranges from 1 to 50, the value of z ranges from 1 to 100, the value of m ranges from 1 to 20, and the value of n ranges from 1 to 100.

[0009] On the other hand, the present application provides a method for preparing the above-mentioned water-based colored sand suspension agent, which is obtained by copolymerization reaction using methoxy polyethylene glycol methacrylate, hexadecyl acrylate and tetrahydrofuran methacrylate as monomers.

[0010] In some specific embodiments, the mass ratio of methoxy polyethylene glycol methacrylate, hexadecyl acrylate and tetrahydrofuran methacrylate is 40:39:20.

[0011] In some specific embodiments, the preparation method comprises:

[0012] The initiator and the reaction medium are mixed; methoxy polyethylene glycol methacrylate, hexadecyl acrylate and tetrahydrofuran methacrylate are added to obtain a reaction system; the reaction system is placed in an oxygen-free atmosphere or a low-concentration oxygen atmosphere, and a polymerization reaction is carried out at a temperature of 70-80°C for 5-7 hours; the temperature is raised to 80-90°C and the polymerization reaction is carried out for 3-5 hours.

[0013] In some embodiments, the initiator is azobisisobutyronitrile.

[0014] In some embodiments, the reaction medium is dipropylene glycol butyl ether.

[0015] On the other hand, the present application provides the use of the above-mentioned water-based colored sand suspending agent in a water-based epoxy colored sand floor material system.

[0016] Furthermore, the present application also provides a water-based epoxy colored sand floor material system using the above-mentioned water-based colored sand suspension agent, including: 18 parts by mass of bisphenol A epoxy resin, 2 parts by mass of diluent, 1 part by mass of ethylene glycol butyl ether, 19 parts by mass of heavy calcium powder, 0.3 parts by mass of dispersant, 0.4 parts by mass of defoaming agent, 0.2 parts by mass of leveling agent, 1 part by mass of color paste, 20 parts by mass of colored sand, 1 part by mass of colored sand suspension agent, 0.4 parts by mass of bentonite, 27.7 parts by mass of water, and 9 parts by mass of water-based epoxy curing agent.

[0017] Compared with the prior art, this application has the following advantages and beneficial effects:

[0018] (1) The water-based colored sand suspending agent of the present application has good adsorption and water dispersibility for colored sand, which can assist colored sand in obtaining excellent suspension stability in the water-based epoxy colored sand floor material system, so that the colored sand particles can quickly migrate to the surface during the scraping process, forming a uniform distribution of colored sand, and achieving an overall unified and beautiful effect on the floor.

[0019] (2) The water-based epoxy colored sand flooring added with the water-based colored sand suspending agent of the present application can also achieve the effect of uniform suspension of colored sand during large-scale construction, without any defects such as floating color and joint marks, thereby improving the batch stability of the production and construction of water-based epoxy colored sand flooring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a photo of the water-based epoxy colored sand floor corresponding to the comparative example;

[0021] Figure 2 The following is a photo of the water-based epoxy colored sand floor corresponding to Example 2. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] The structural formula of the water-based colored sand suspension agent of the present application is shown in Formula (I), and the specific steps of its preparation method are as follows:

[0024] (1) Place dipropylene glycol butyl ether and azobisisobutyronitrile in a flask and stir until dissolved; in this step, dipropylene glycol butyl ether is used as a reaction medium and azobisisobutyronitrile is used as an initiator for the polymerization reaction.

[0025] (2) Add the polymerization monomers methoxy polyethylene glycol methacrylate, hexadecyl acrylate and tetrahydrofuran methacrylate into a beaker and stir evenly to obtain a reaction system.

[0026] (3) The flask was evacuated and filled with nitrogen. After three cycles, the flask was filled with nitrogen and sealed with a rubber seal to place the reaction system in a nitrogen atmosphere.

[0027] (4) Place the flask in an oil bath and heat it to 70-80°C, and maintain the constant temperature to allow the reaction system to undergo a polymerization reaction for 5-7 hours;

[0028] (5) The temperature is then raised to 80-90°C and the temperature is maintained constant to allow the reaction system to undergo a secondary polymerization reaction for 3-5 hours to obtain a water-based colored sand suspension.

[0029] In a specific embodiment, the mass ratio of methoxy polyethylene glycol methacrylate, hexadecyl acrylate and tetrahydrofuran methacrylate is preferably 40:39:20. Furthermore, the mass ratio of dipropylene glycol butyl ether, azobisisobutyronitrile, methoxy polyethylene glycol methacrylate, hexadecyl acrylate and tetrahydrofuran methacrylate is preferably 100:1:40:39:20.

[0030] The following examples and comparative examples are provided to further demonstrate the technical effects of the colored sand suspending agent of the present application.

[0031] The raw materials used in the examples and comparative examples are all industrial grade raw materials, as follows:

[0032] Dipropylene glycol butyl ether, commercially available, CAS number: 29911-28-2;

[0033] Azobisisobutyronitrile, commercially available, CAS number: 78-67-1;

[0034] Methoxy polyethylene glycol methacrylate, commercially available, CAS number: 26915-72-0;

[0035] Hexadecyl acrylate, commercially available, CAS number: 13402-02-3;

[0036] Tetrahydrofuran methacrylate, commercially available, CAS number: 2455-24-5;

[0037] Bisphenol A epoxy resin, select E51 resin;

[0038] Diluent: Model 690 diluent, the main component is phenyl glycidyl ether;

[0039] Dispersant: Model tech-598 dispersant, which is a phosphate dispersant;

[0040] Defoamer: Model tech-321W defoamer, emulsified modified silicone oil;

[0041] Leveling agent: Model tech-257N leveling agent, its composition is polyether modified silicone oil;

[0042] Curing agent: hydrophilic modified amine curing agent, model Hanzhong H225B water-based epoxy curing agent;

[0043] Heavy calcium powder: commercially available, particle size 1250 mesh;

[0044] Bentonite: commercially available, particle size 1250 mesh;

[0045] Mixed colored sand: commercially available, particle size 120-180 mesh.

[0046] Example 1

[0047] This embodiment is a method for preparing a colored sand suspension agent, comprising the steps of:

[0048] (1) Place 100 parts by mass of dipropylene glycol butyl ether and 1 part by mass of azobisisobutyronitrile in a flask and stir to dissolve the azobisisobutyronitrile in the dipropylene glycol butyl ether;

[0049] (2) Add 40 parts by mass of methoxy polyethylene glycol methacrylate, 39 parts by mass of hexadecyl acrylate, and 20 parts by mass of tetrahydrofuran methacrylate to the flask and continue stirring;

[0050] (3) The flask was evacuated and filled with nitrogen. After three cycles, the flask was filled with nitrogen and sealed with a rubber seal to place the reaction system in a nitrogen atmosphere.

[0051] (4) Place the flask in an oil bath and heat it to 75°C, and maintain the temperature at 75°C for 6 hours to allow the reaction system to undergo a polymerization reaction;

[0052] (5) The temperature is then raised to 85°C and maintained at 85°C for 4 hours to allow the reaction system to undergo a secondary polymerization reaction to obtain a water-based colored sand suspension.

[0053] Example 2

[0054] This embodiment is an example of the application of the water-based colored sand suspension agent of Example 1 in water-based epoxy colored sand flooring.

[0055] The raw materials of the water-based epoxy colored sand floor in this embodiment include: 18 parts by mass of bisphenol A epoxy resin, 2 parts by mass of diluent, 1 part by mass of ethylene glycol butyl ether, 19 parts by mass of heavy calcium powder, 0.3 parts by mass of dispersant, 0.4 parts by mass of defoamer, 0.2 parts by mass of leveling agent, 1 part by mass of color paste, 20 parts by mass of mixed colored sand, 1 part by mass of colored sand suspending agent, 0.4 parts by mass of bentonite, 27.7 parts by mass of water, and 9 parts by mass of water-based epoxy curing agent. The colored sand suspending agent is the colored sand suspending agent in Example 1.

[0056] Mix all the above raw materials to obtain the floor material of this embodiment.

[0057] Comparative Example

[0058] The raw materials of the comparative water-based epoxy colored sand floor include: 18 parts by mass of bisphenol A epoxy resin, 2 parts by mass of diluent, 1 part by mass of ethylene glycol butyl ether, 19 parts by mass of heavy calcium powder, 0.3 parts by mass of dispersant, 0.4 parts by mass of defoamer, 0.2 parts by mass of leveling agent, 1 part by mass of color paste, 20 parts by mass of mixed colored sand, 0.4 parts by mass of bentonite, 27.7 parts by mass of water, and 9 parts by mass of water-based epoxy curing agent. Compared with Example 2, the comparative example does not add a colored sand suspending agent.

[0059] Mix all the above raw materials to obtain the floor material of this embodiment.

[0060] The floor materials of Example 2 and the comparative example were scraped on the same tiles respectively, and the scraping effect was observed. It was found that within 30 minutes after the scraping of the comparative example floor material, the migration and suspension speed of the colored sand was slow, and it was difficult to completely suspend and migrate upward. Finally, the colored sand particles on the surface were sparse, and there was uneven emulsion. Figure 1As shown. Within 30 minutes after applying the flooring material in Example 2, the colored sand completely floated and migrated upward, achieving a uniform, evenly distributed surface with no floating color. When the colored sand in Example 2 was replaced with treated colored sand (using Shanghai Dekun RP 40 / 50 colored sand), the colored sand completely floated and migrated upward within 5 minutes of applying the flooring material. Clearly, our colored sand suspending agent can help the colored sand quickly migrate and float, achieving a uniform, even overall effect and excellent suspension.

[0061] The mechanism of the colored sand suspending agent of the present application is as follows: hexadecyl acrylate has a long hydrocarbon chain, has good adsorption properties for colored sand, and is hydrophobic, which can cause the colored sand to float and suspend in water; polyethylene glycol acrylate is used to provide hydrophilicity and stability; tetrahydrofuran acrylate has a strong adsorption and anchoring effect on the colored sand, which is used to ensure that the colored sand is not easily separated from the suspending agent during the stirring process, thereby ensuring the long-term effect of the suspending agent.

[0062] Note that the above are only preferred embodiments of the present application and the technical principles employed. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the scope of protection of the present application, all of which fall within the scope of protection of the present application.

Claims

1. A water-based colored sand suspension agent, characterized in that the structural formula as follows: ； Where p, z, m, and n are all integers. The value of p ranges from 1 to 50, the value of z ranges from 1 to 100, the value of m ranges from 1 to 20, and the value of n ranges from 1 to 100.

2. A method for preparing an aqueous colored sand suspension, characterized in that: The product is obtained by copolymerization of methoxy polyethylene glycol methacrylate, hexadecyl acrylate and tetrahydrofuran methacrylate as monomers.

3. The preparation method of water-based colored sand suspension according to claim 2, wherein: The mass ratio of the methoxy polyethylene glycol methacrylate, the hexadecyl acrylate and the tetrahydrofuran methacrylate is 40:39:

20.

4. The method for preparing an aqueous colored sand suspension according to claim 2, wherein: include: mixing an initiator and a reaction medium; Methoxy polyethylene glycol methacrylate, hexadecyl acrylate and tetrahydrofuran methacrylate are added to obtain a reaction system; the reaction system is placed in an oxygen-free atmosphere or a low-concentration oxygen atmosphere, and a polymerization reaction is carried out at a temperature of 70-80° C. for 5-7 hours; the temperature is raised to 80-90° C. and the polymerization reaction is carried out for 3-5 hours.

5. The method for preparing an aqueous colored sand suspension according to claim 4, wherein: The initiator is azobisisobutyronitrile.

6. The method for preparing an aqueous colored sand suspension according to claim 4, wherein: The reaction medium is dipropylene glycol butyl ether.

7. Application of the water-based colored sand suspending agent according to claim 1 in a water-based epoxy colored sand floor material system.

8. A water-based epoxy colored sand floor material system, characterized by: The invention comprises 18 parts by mass of bisphenol A epoxy resin, 2 parts by mass of diluent, 1 part by mass of ethylene glycol butyl ether, 19 parts by mass of heavy calcium powder, 0.3 parts by mass of dispersant, 0.4 parts by mass of defoamer, 0.2 parts by mass of leveling agent, 1 part by mass of color paste, 20 parts by mass of colored sand, 1 part by mass of colored sand suspending agent, 0.4 parts by mass of bentonite, 27.7 parts by mass of water, and 9 parts by mass of water-based epoxy curing agent; the colored sand suspending agent is the colored sand suspending agent described in claim 1.

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