A basalt flake composition, use method and application thereof

Abstract

The present application belongs to the field of basalt flake compositions, and specifically relates to a basalt flake composition, a method of use, and its application. The present application forms a basalt flake composition by adding sulfonated modified basalt flakes prepared by a specific method and a polymer additive prepared by a specific method to a base material; the present application also provides a method of use of the basalt flake composition, as well as a specific application in lubricating coating materials. The present application uses a specific method to react basalt flakes with 3-sulfonic acid propyl methacrylate potassium salt at room temperature. The reaction conditions are mild, the reaction apparatus is simple, and the product prepared has excellent performance. The basalt flake composition prepared on this basis cooperates with the polymer additive prepared by a specific means, so that after being added to the base material, the base material performance is significantly improved.

Description

Technical Field

[0001] The present application belongs to the field of basalt flake compositions, and specifically relates to a basalt flake composition, a method of use and applications thereof. Background Art

[0002] In the current field of materials technology, as demand continues to increase, the performance requirements for materials are also constantly increasing; in the current field of materials technology, various additives are often added to organic matter to improve performance. In some technical routes, there are solutions to add basalt scales to improve material performance.

[0003] However, basalt flakes are an inorganic flake material. When materials such as high molecular weight polyethylene are combined with basalt flakes as an organic matrix (base material), the basalt flakes tend to agglomerate due to their poor compatibility and the fact that the density of basalt flakes is greater than that of water. This agglomeration will cause the basalt flakes to be unevenly dispersed in the matrix, which will have an adverse effect on the material properties.

[0004] Therefore, it is necessary to conduct further research on traditional basalt scales to solve the related problems. Summary of the Invention

[0005] The purpose of this application is to address the deficiencies of the prior art and provide a basalt flake composition, a method of use, and applications thereof, specifically employing the following technical solutions:

[0006] First, the present application provides a basalt flake composition, the raw materials of which include:

[0007] Sulfonated modified basalt flakes, polymer additives, base materials;

[0008] The preparation method of sulfonated modified basalt flakes comprises the following steps:

[0009] The basalt flakes are immersed in a strong alkaline solution for surface etching, and then reacted with a silane coupling agent containing a mercapto group to achieve grafting of the silane coupling agent to obtain grafted basalt flakes. The grafted basalt flakes are then subjected to a Michael addition reaction with 3-sulfopropyl methacrylate potassium salt at room temperature to obtain sulfonated modified basalt flakes.

[0010] The preparation method of the polymer additive comprises the following steps:

[0011] The first raw material, the second raw material and the third raw material are dissolved in a butanone-isopropanol mixed solution, and then an initiator is added and the reaction is carried out for 7 h-12 h;

[0012] The first raw material includes: at least one of polyethylene glycol nonylphenyl ether acrylate and polypropylene glycol nonylphenyl ether acrylate;

[0013] The second raw material comprises: at least one of hydroxypropyl acrylamide, hydroxyethyl acrylamide, methacrylamide, hydroxymethyl acrylamide and vinyl caprolactam;

[0014] The third raw material includes: polyethylene glycol methacrylate or polypropylene glycol methacrylate.

[0015] The base materials mentioned in this application are organic polymer compounds including polyurethane, polyethylene, etc.

[0016] This application involves soaking basalt flakes in a strong alkali solution to remove impurities such as oil and dirt. The alkali solution also etches the surface, leaving more hydroxyl groups that react with a silane coupling agent. The basalt flakes, soaked in a strong alkali solution, are then mixed and heated with a silane coupling agent containing a mercapto group in an ethanol solution, allowing the silane coupling agent to attach to the surface of the basalt flakes via a silicon-oxygen bond. This results in mercapto groups on the surface of the basalt flakes. The mercapto groups then undergo a Michael addition reaction with potassium 3-sulfopropyl methacrylate in dimethyl sulfoxide, forming carbon-sulfur bonds. This results in sulfonate groups on the surface of the basalt flakes, further enhancing their negative charge. Because like charges repel each other, the basalt flakes become less likely to agglomerate.

[0017] However, in some cases, when combined with some base materials, uneven charge distribution will occur. Although the treated basalt flakes can repel each other to a certain extent to improve uniformity, the effect still has room for improvement. The present application adds specific polymer additives synthesized by a specific method, so that the basalt flakes with sulfonate groups that have been specifically treated have more superior dispersion properties to a certain extent, thereby improving the dispersion properties of traditional basalt flakes and also improving the corresponding friction properties.

[0018] In some specific implementations, the basalt flakes are in powder form with a mesh size of 100-1000. Specific relatively fine powdered basalt flakes can effectively increase the reaction rate and enhance the surface modification performance of the sulfonate groups.

[0019] In some specific implementations, the strong alkaline solution is an aqueous solution of sodium hydroxide or potassium hydroxide with a mass fraction of 10% to 40%. High concentrations of sodium hydroxide and potassium hydroxide aqueous solutions can fully treat the surface of the basalt flake powder, thereby providing ideal reaction conditions for subsequent preparation steps.

[0020] In some specific implementations, the mass ratio of basalt flakes to strong alkaline solution is 1:(10-100), and the soaking time is 1-10 hours. Excellent results can be achieved by soaking the basalt flakes as raw materials in a strong alkaline solution of a specific concentration.

[0021] In some specific implementations, the silane coupling agent includes at least one of (3-mercaptopropyl)triethoxysilane and (3-mercaptopropyl)trimethoxysilane. This specific silane coupling agent can facilitate a reaction that proceeds according to a specific objective, thereby enabling the prepared sulfonated modified basalt flakes to synergize with the polymer additive prepared by the specific method provided herein, thereby improving performance.

[0022] In some specific implementations, the initiator includes either azobisisobutyronitrile or azobisisoheptanenitrile. A specific initiator can promote the reaction to proceed according to a specific goal, thereby enabling the prepared polymer additive to synergize with the sulfonated modified basalt flakes prepared by the specific method provided in this application, thereby improving performance.

[0023] In some specific implementations, the grafted basalt flakes undergo a Michael addition reaction with potassium 3-sulfopropyl methacrylate and an organic base in dimethyl sulfoxide (DMSO). The mass ratio of basalt flakes to potassium 3-sulfopropyl methacrylate, organic base, and DMSO is 1:(0.5-1):(0.01-0.1):(100-300). This specific ratio of Michael addition reaction effectively controls side reactions, ensuring the reaction proceeds as intended, thereby producing a specific sulfonated modified basalt flake.

[0024] In some specific implementations, the mass ratio of butanone to isopropanol in the butanone-isopropanol mixed solution is (1.5-2.5):1. A specific solvent configured in a specific ratio can enable the chemical reaction to proceed as expected and achieve better results.

[0025] Secondly, the present application also provides a method for using the above-mentioned basalt flake composition, which specifically comprises the following steps: coating the basalt flake composition on a substrate and drying it, wherein the raw materials of the basalt flake composition are sulfonated modified basalt flakes, polymer additives and base material in a mass ratio of (2-3.5): (1.5-2.5): (100-1000);

[0026] The substrate comprises a metal substrate, an organic material substrate, or an inorganic non-metallic material substrate; the drying temperature is 40°C-80°C for 12-24 hours. The basalt flake composition provided in this application, whose raw materials are prepared in specific mass ratios and supplemented with specific usage methods, can achieve relatively excellent results.

[0027] Finally, the present application also provides an application of the above-mentioned basalt flake composition in lubricating coating materials.

[0028] The beneficial effects of the present application are as follows: the present application uses a specific method to allow basalt flakes to react with 3-sulfonate propyl methacrylate potassium salt at room temperature, with mild reaction conditions and a simple reaction apparatus, while the prepared product has excellent performance, thereby enabling the basalt flake composition prepared on this basis to cooperate with a polymer additive prepared by specific means, thereby significantly improving the performance of the base material after being added into the base material. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Shown is a graph of the Zeta potential test results in a specific embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments and drawings to clearly and completely describe the concept and technical effects of this application so as to fully understand the purpose, scheme and effect of this application. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict.

[0031] Example 1

[0032] First, this embodiment provides a basalt flake composition, the raw materials of which include:

[0033] Sulfonated modified basalt flakes, polymer additives, and base material; the base material is water-based polyurethane.

[0034] The preparation method of sulfonated modified basalt flakes comprises the following steps:

[0035] 32 g of 240 mesh basalt flakes were soaked in a 10% mass concentration of potassium hydroxide aqueous solution for 4 h, and then the soaked basalt flakes were taken out and washed with water until the pH of the washed solution was 7, and then dried for the first time. The first drying was specifically as follows: drying in an oven at 100 ° C for 6 h; obtaining a first intermediate; 6 g of the first intermediate was added to 300 mL of ethanol, and 1.8 g of (3-mercaptopropyl) triethoxysilane (purity 98%) was added, stirred and heated to 90 ° C for reflux 4 h, and the obtained product was washed and dried for the second time. The second drying was specifically as follows: drying in an oven at 100 ° C for 5 h to obtain a second intermediate; 1 g of the second intermediate was mixed with 100 g of dimethyl sulfoxide, 0.5 g of 3-sulfopropyl methacrylate potassium salt and 0.01 g of diisopropanolamine (i.e., an organic base), and stirred under nitrogen for 12 h, separating the obtained product, washing it with water and ethanol for 5 times, and drying it for the third time. The third drying step is as follows: drying it in an oven at 70°C for 5 h;

[0036] The preparation method of the polymer additive comprises the following steps:

[0037] 70 g of the first raw material (polyethylene glycol nonylphenyl ether acrylate), 10 g of the second raw material (hydroxypropyl acrylamide) and 120 g of the third raw material (polyethylene glycol methacrylate) were dissolved in a butanone-isopropanol mixed solution and mixed evenly. Subsequently, 6 g of initiator (azobisisobutyronitrile) was added and the reaction was allowed to proceed for 10 h.

[0038] Secondly, this embodiment also provides a method for using the above-mentioned basalt flake composition to form a specific coating, which specifically includes the following steps:

[0039] The sulfonated modified basalt flakes, polymer additives and base material are mixed evenly, coated on a substrate (stainless steel plate), and then dried as a whole (drying temperature 65°C, drying time 20 h), wherein the mass ratio of the sulfonated modified basalt flakes, polymer additives and base material provided in this embodiment is 3:2:150.

[0040] Example 2

[0041] First, this embodiment provides a basalt flake composition, the raw materials of which include:

[0042] Sulfonated modified basalt flakes, polymer additives, and base material; the base material is water-based polyurethane.

[0043] The preparation method of sulfonated modified basalt flakes comprises the following steps:

[0044] 32 g of 240-mesh basalt flakes were soaked in a 40% potassium hydroxide aqueous solution for 4 h. The soaked basalt flakes were then taken out and washed with water until the pH of the washed solution was 7. The first drying was carried out as follows: drying in an oven at 100 ° C for 6 h to obtain a first intermediate; 6 g of the first intermediate was added to 300 mL of ethanol, and 1.8 g of (3-mercaptopropyl) triethoxysilane (purity 98%) was added, stirred and heated to 75 ° C for reflux for 4 h, and the obtained product was washed and dried for a second time. The second drying was carried out as follows: drying in an oven at 100 ° C for 5 h to obtain a second intermediate; 1 g of the second intermediate was mixed with 100 g of dimethyl sulfoxide, 0.5 g of 3-sulfopropyl methacrylate potassium salt and 0.01 g of diisopropanolamine (i.e., an organic base), and stirred under nitrogen for 36 h, separating the obtained product, washing it with water and ethanol for 5 times, and drying it for the third time. The third drying step is as follows: drying it in an oven at 100°C for 5 h;

[0045] The preparation method of the polymer additive comprises the following steps:

[0046] 70 g of the first raw material (polyethylene glycol nonylphenyl ether acrylate), 10 g of the second raw material (hydroxypropyl acrylamide) and 120 g of the third raw material (polyethylene glycol methacrylate) were dissolved in a butanone-isopropanol mixed solution and mixed evenly. Subsequently, 6 g of initiator (azobisisobutyronitrile) was added and the reaction was allowed to proceed for 10 h.

[0047] Secondly, this embodiment also provides a method for using the above-mentioned basalt flake composition to form a specific coating, which specifically includes the following steps:

[0048] The sulfonated modified basalt flakes, polymer additives and base material are mixed evenly, coated on a substrate (stainless steel plate), and then dried as a whole (drying temperature 65°C, drying time 20 h), wherein the mass ratio of the sulfonated modified basalt flakes, polymer additives and base material provided in this embodiment is 3:2:150.

[0049] Comparative Example 1

[0050] First, this comparative example provides a basalt flake composition, the raw materials of which include:

[0051] Basalt flakes, polymer additives, base material; the base material is water-based polyurethane.

[0052] The preparation of basalt flakes includes the following steps:

[0053] Weigh 6 g of dried 240-mesh basalt flakes; wash the flakes with water five times. Dry the washed flakes in an oven at 100°C for 5 h.

[0054] The preparation method of the polymer additive comprises the following steps:

[0055] 70 g of the first raw material (polyethylene glycol nonylphenyl ether acrylate), 10 g of the second raw material (hydroxypropyl acrylamide) and 120 g of the third raw material (polyethylene glycol methacrylate) were dissolved in a butanone-isopropanol mixed solution and mixed evenly. Subsequently, 6 g of initiator (azobisisobutyronitrile) was added and the reaction was allowed to proceed for 10 h.

[0056] Secondly, this comparative example also provides a method for using the above-mentioned basalt flake composition to form a specific coating, which specifically includes the following steps:

[0057] The basalt flakes, polymer additives and base material are mixed evenly, coated on a substrate (stainless steel plate), and then dried as a whole (drying temperature 65°C, drying time 20 h), wherein the mass ratio of the basalt flakes, polymer additives and base material provided in this comparative example is 3:2:150.

[0058] Comparative Example 2

[0059] First, this comparative example provides a basalt flake composition, the raw materials of which include:

[0060] Preliminary modified basalt flakes, polymer additives, and base material; the base material is water-based polyurethane.

[0061] The steps for preparing the preliminarily modified basalt flakes are as follows:

[0062] Weigh 6 g of oven-dried 240-mesh basalt flakes and add them to 300 mL of ethanol. Then, add 1.8 g of (3-mercaptopropyl)triethoxysilane. Stir and heat to 90°C, then reflux for 4 hours. The product is then separated, washed five times with water, and dried in an oven at 100°C for 5 hours.

[0063] The preparation method of the polymer additive comprises the following steps:

[0064] 70 g of the first raw material (polyethylene glycol nonylphenyl ether acrylate), 10 g of the second raw material (hydroxypropyl acrylamide) and 120 g of the third raw material (polyethylene glycol methacrylate) were dissolved in a butanone-isopropanol mixed solution and mixed evenly. Subsequently, 6 g of initiator (azobisisobutyronitrile) was added and the reaction was allowed to proceed for 10 h.

[0065] Secondly, this comparative example also provides a method for using the above-mentioned basalt flake composition to form a specific coating, which specifically includes the following steps:

[0066] The preliminarily modified basalt flakes, polymer additives and base material are mixed evenly, coated on a substrate (stainless steel plate), and then dried as a whole (drying temperature 65°C, drying time 20 h), wherein the mass ratio of the preliminarily modified basalt flakes, polymer additives and base material provided in this comparative example is 3:2:150.

[0067] Comparative Example 3

[0068] First, this comparative example provides a basalt flake composition, the raw materials of which include:

[0069] Sulfonated modified basalt flakes and base material; the base material is water-based polyurethane.

[0070] The preparation method of sulfonated modified basalt flakes comprises the following steps:

[0071] Take 32 g of 240 mesh basalt flakes as basalt flake raw materials, soak them in a 10% mass concentration of potassium hydroxide aqueous solution for 4 h, then take out the soaked basalt flake raw materials, wash them with water until the pH of the washed solution is 7, and then perform the first drying. The first drying is specifically as follows: use an oven to dry at 100 ° C for 6 h; obtain a first intermediate; take 6 g of the first intermediate and add it to 300 ml of ethanol, and add 1.8 g of (3-mercaptopropyl) triethoxysilane (purity 98%), stir and heat to 90 ° C and reflux for 4 h, wash the obtained product and perform the second drying. The second drying is specifically as follows: dry it in an oven at 100 ° C for 5 h to obtain a second intermediate; take 1 g of the second intermediate and mix it with 100 g of dimethyl sulfoxide, 0.5 g of 3-sulfopropyl methacrylate potassium salt and 0.01 g of diisopropanolamine (i.e., an organic base), and stir it under nitrogen for 12 h, separating the obtained product, washing it with water and ethanol for 5 times, and drying it for the third time. The third drying step is as follows: drying it in an oven at 70°C for 5 h;

[0072] Secondly, this comparative example also provides a method for using the above-mentioned basalt flake composition to form a specific coating, which specifically includes the following steps:

[0073] The sulfonated modified basalt flakes and the base material are mixed evenly, coated on a substrate, and then dried as a whole. The mass ratio of the sulfonated modified basalt flakes and the base material provided in this comparative example is 3:150.

[0074] The base material is a stainless steel plate; the overall drying temperature is 65°C and the drying time is 20 h.

[0075] Comparative Example 4

[0076] First, this comparative example provides a basalt flake composition, the raw materials of which include:

[0077] Sulfonated modified basalt flakes, polymer additives, and base material; the base material is water-based polyurethane.

[0078] The preparation method of sulfonated modified basalt flakes comprises the following steps:

[0079] 32 g of 240 mesh basalt flakes were soaked in a 10% mass concentration of potassium hydroxide aqueous solution for 4 h, and then the soaked basalt flakes were taken out and washed with water until the pH of the washed solution was 7, and then dried for the first time. The first drying was specifically as follows: drying in an oven at 100 ° C for 6 h; obtaining a first intermediate; 6 g of the first intermediate was added to 300 mL of ethanol, and 1.8 g of (3-mercaptopropyl) triethoxysilane (purity 98%) was added, stirred and heated to 90 ° C for reflux 4 h, and the obtained product was washed and dried for the second time. The second drying was specifically as follows: drying in an oven at 100 ° C for 5 h to obtain a second intermediate; 1 g of the second intermediate was mixed with 100 g of dimethyl sulfoxide, 0.5 g of 3-sulfopropyl methacrylate potassium salt and 0.01 g of diisopropanolamine (i.e., an organic base), and stirred under nitrogen for 12 h, separating the obtained product, washing it with water and ethanol for 5 times, and drying it for the third time. The third drying step is as follows: drying it in an oven at 70°C for 5 h;

[0080] The preparation method of the polymer additive comprises the following steps:

[0081] 70 g of the first raw material (polyethylene glycol nonylphenyl ether acrylate) and 10 g of the second raw material (hydroxypropyl acrylamide) were dissolved in a butanone-isopropanol mixed solution and mixed evenly. Then, 6 g of initiator (azobisisobutyronitrile) was added and the reaction was carried out for 10 h.

[0082] Secondly, this comparative example also provides a method for using the above-mentioned basalt flake composition to form a specific coating, which specifically includes the following steps:

[0083] The sulfonated modified basalt flakes, polymer additives and base material are mixed evenly, coated on a substrate (stainless steel plate), and then dried as a whole (drying temperature 65°C, drying time 20 h), wherein the mass ratio of the sulfonated modified basalt flakes, polymer additives and base material provided in this comparative example is 3:2:150.

[0084] Blank control group

[0085] Waterborne polyurethane was used as the base material, coated on the substrate and then dried as a whole, wherein the substrate was a stainless steel plate; the overall drying temperature was 65°C and the drying time was 20 h.

[0086] Performance Testing

[0087] The sulfonated modified basalt flakes obtained in Examples 1-2, the basalt flakes in Comparative Example 1, and the preliminarily modified basalt flakes obtained in Comparative Example 2 were tested for Zeta potential. The specific results are shown in Figure 1 .

[0088] Depend on Figure 1 It can be seen that the basalt flakes of Example 1 have the highest Zeta potential (largest absolute value), and the negatively charged sulfonic acid groups are distributed on its surface, which makes it have the strongest tendency to disperse in water or other solutions; followed by Example 2; the Zeta potential of Comparative Example 2 is the lowest (smallest absolute value), and its tendency to disperse in water or other solutions is the weakest, because the mercaptosilane on the surface is a group with weaker polarity and the surface carries less charge.

[0089] The coatings obtained in the aforementioned examples and comparative examples were subjected to reciprocating friction tests under the following conditions: a 5N load, a 5mm stroke, a 2Hz frequency, lubrication with a 3.5% sodium chloride solution, and a 20-minute test duration. The counter-friction pair consisted of a 10mm-diameter silicon nitride ball. The friction coefficient was recorded during the test. After the test, the volume of the wear scar on the coating was measured, and the wear rate was calculated. The results are shown in Table 1.

[0090] Table 1 Friction coefficient and wear rate of waterborne polyurethane coating

[0091]

[0092] From the test results in Table 1, it can be seen that Example 1 and Example 2, which are made based on the technical solution provided in this application, can effectively improve the friction performance of the waterborne polyurethane coating, reduce its friction coefficient, and reduce its wear rate.

[0093] Although the description of the present application has been quite detailed and specifically describes several embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, but should be regarded as providing a broad possible interpretation of these claims by reference to the appended claims in view of the prior art, thereby effectively covering the intended scope of the present application. In addition, the above description of the present application is based on the embodiments foreseeable by the applicant, which is intended to provide a useful description, and those non-substantial changes to the present application that have not yet been foreseen may still represent equivalent changes to the present application.

Claims

1. A basalt flake composition, characterized in that: Ingredients include: Sulfonated modified basalt flakes, polymer additives, base materials; The preparation method of the sulfonated modified basalt flakes comprises the following steps: The basalt flakes are immersed in a strong alkaline solution for surface etching, and then reacted with a silane coupling agent containing a mercapto group to achieve grafting of the silane coupling agent to obtain grafted basalt flakes, and then the grafted basalt flakes are subjected to a Michael addition reaction with 3-sulfopropyl methacrylate potassium salt at room temperature to obtain the sulfonated modified basalt flakes; The preparation method of the polymer additive comprises the following steps: The first raw material, the second raw material and the third raw material are dissolved in a butanone-isopropanol mixed solution, and then an initiator is added and the reaction is carried out for 7 h-12 h; The first raw material comprises: at least one of polyethylene glycol nonylphenyl ether acrylate and polypropylene glycol nonylphenyl ether acrylate; The second raw material comprises at least one of hydroxypropyl acrylamide, hydroxyethyl acrylamide, methacrylamide, hydroxymethyl acrylamide and vinyl caprolactam; The third raw material includes: polyethylene glycol methacrylate or polypropylene glycol methacrylate; The grafted basalt flakes are subjected to Michael addition reaction with 3-sulfopropyl methacrylate potassium salt and an organic base in dimethyl sulfoxide, wherein the mass ratio of the basalt flakes to the 3-sulfopropyl methacrylate potassium salt, the organic base and the dimethyl sulfoxide is 1: (0.5-1): (0.01-0.1): (100-300); In the raw materials of the basalt flake composition, the mass ratio of the sulfonated modified basalt flake, the polymer additive and the base material is (2-3.5): (1.5-2.5): (100-1000).

2. A basalt flake composition according to claim 1, characterized in that: The basalt flakes are in powder form, and the mesh size is 100-1000 mesh.

3. A basalt flake composition according to claim 2, characterized in that: The strong alkali solution is an aqueous solution of sodium hydroxide or potassium hydroxide with a mass fraction of 10%-40%.

4. A basalt flake composition according to claim 3, characterized in that: The mass ratio of the basalt flakes to the strong alkaline solution is 1:(10-100), and the soaking time is 1 h-10 h.

5. A basalt flake composition according to claim 1, characterized in that: The silane coupling agent includes at least one of (3-mercaptopropyl)triethoxysilane and (3-mercaptopropyl)trimethoxysilane.

6. A basalt flake composition according to claim 1, characterized in that: The initiator includes any one of azobisisobutyronitrile and azobisisoheptanenitrile.

7. The basalt flake composition according to claim 1, characterized in that: The mass ratio of butanone to isopropanol in the butanone-isopropanol mixed solution is (1.5-2.5):

1.

8. A method for using the basalt flake composition according to any one of claims 1 to 7, characterized in that: The following steps are involved: coating the basalt flake composition on a substrate and drying; The substrate comprises one of a metal substrate, an organic material substrate and an inorganic non-metallic material substrate; the drying temperature is 40° C.-80° C., and the drying time is 12 h-24 h.

9. Use of the basalt flake composition according to any one of claims 1 to 7 in lubricating coating materials.

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