Magnetic putty powder and preparation method thereof

Abstract

The invention discloses magnetic putty powder and a preparation method thereof. The magnetic putty powder is prepared from the following raw materials in parts by weight: 80 to 100 parts of filler, 850 to 950 parts of ferromagnetic powder, 2.5 to 4.5 parts of water-retaining agent and 1.5 to 2.5 parts of thickening agent. The magnetic putty powder prepared by the invention is prepared by uniformly mixing the raw materials, and is simple to prepare and excellent in performance.

Description

Technical Field

[0001] The present invention relates to the technical field of putty powder preparation, and in particular to a magnetic putty powder and a preparation method thereof. Background Art

[0002] Putty powder is a kind of building decoration material. With the continuous improvement of people's living standards and the advancement of science and technology, people have higher and higher requirements for wall decoration. Wall decoration materials are constantly updated to meet people's needs. The quality of wall decoration is also constantly improving. The use of magnetic putty powder makes the wall magnetic, which is convenient for hanging drawings, paintings and other decorative ornaments. Summary of the invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of protection of this application.

[0004] The magnetic putty powder prepared in the present application is obtained by uniformly mixing the raw materials, and has simple preparation and excellent performance.

[0005] The first aspect of the present application provides a magnetic putty powder, wherein the raw materials of the magnetic putty powder include, by weight, 80-100 parts of filler, 850-950 parts of ferromagnetic powder, 2.5-4.5 parts of water retaining agent and 1.5-2.5 parts of thickener.

[0006] In an exemplary embodiment, the raw materials of the magnetic putty powder are composed, by weight, of 80-100 parts of filler, 850-950 parts of ferromagnetic powder, 2.5-4.5 parts of water retaining agent and 1.5-2.5 parts of thickener.

[0007] In an exemplary embodiment, the filler is any one or both of heavy calcium powder and talcum powder; optionally, it is heavy calcium powder.

[0008] In an exemplary embodiment, the particle size of the heavy calcium powder is 250-325 mesh; optionally, 250 mesh.

[0009] In an exemplary embodiment, the ferromagnetic powder is magnetic mineral powder Fe3O4.

[0010] In an exemplary embodiment, the particle size of the ferromagnetic powder is 350-450 mesh, optionally, 400 mesh.

[0011] In an exemplary embodiment, the water retaining agent is cellulose ether.

[0012] In an exemplary embodiment, the viscosity of the cellulose ether is in the range of 40,000 to 50,000 mPa·s.

[0013] In an exemplary embodiment, the cellulose ether is selected from any one of methyl cellulose ether, hydroxypropyl methyl cellulose ether, and carboxymethyl cellulose ether, or a combination of several of them.

[0014] In an exemplary embodiment, the cellulose ether is hydroxypropyl methylcellulose ether.

[0015] In an exemplary embodiment, the thickener is starch ether.

[0016] In an exemplary embodiment, the starch ether is selected from any one of potato modified starch ether, cassava modified starch ether, carboxymethyl starch ether, hydroxyethyl starch ether and hydroxypropyl starch ether; optionally, it is cassava modified starch ether.

[0017] In an exemplary embodiment, the starch ether has a viscosity of 600-1600 mPa·s (5% aqueous solution), a pH of 9-11, a particle size of <35 μm, and a water content of <5%.

[0018] In an exemplary embodiment, the raw materials of the magnetic putty powder include, by weight, 94.5 parts by weight of 250-mesh heavy calcium powder, 900 parts by weight of ferromagnetic powder, 3.5 parts by weight of cellulose ether, and 2 parts by weight of starch ether.

[0019] In an exemplary embodiment, the raw materials of the magnetic putty powder include, by weight: 84.5 parts by weight of 250-mesh heavy calcium powder, 850 parts by weight of ferromagnetic powder, 3.5 parts by weight of hydroxypropyl methylcellulose ether, and 2 parts by weight of starch ether.

[0020] The second aspect of the present application provides a method for preparing the above-mentioned magnetic putty powder, comprising the following steps: according to a proportion, the filler, ferromagnetic powder, a water retaining agent, and a thickener are uniformly mixed to obtain a finished magnetic putty powder product.

[0021] The third aspect of the present application provides a magnetic putty powder prepared by the above method.

[0022] Compared with the prior art, the magnetic putty powder prepared in the present application is obtained by uniformly mixing the raw materials, is simple to make, has excellent performance, can maintain high magnetic bonding strength for a long time, and does not crack.

[0023] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0025] The present application is further described in detail below in conjunction with specific examples, but the examples should not be construed as limiting the present invention.

[0026] Raw materials, unless otherwise specified, are conventional products on the market.

[0027] The manufacturers and brands of some raw materials in the comparative examples and embodiments of this application are as follows:

[0028] Heavy calcium powder, particle size 250-325 mesh, moisture content less than or equal to 0.01%, manufacturer is Zhejiang Qintang Calcium Industry Co., Ltd.;

[0029] Ferromagnetic powder Fe3O4 was purchased from Suzhou Kailexi Ecological Environment Technology Co., Ltd.;

[0030] Hydroxypropyl methylcellulose ether was purchased from Shanghai Huiguang Fine Chemical Co., Ltd., model GMC1163, viscosity 40000-50000 mPa·s;

[0031] Starch ether was purchased from Avibe, Netherlands, model 301, pH value 9.5-11, viscosity 600-1600 mPa·s (5% aqueous solution), particle size <35 μm, moisture <5%;

[0032] Corn pregelatinized starch was purchased from Gaofeng Biotechnology;

[0033] Fe2O3 powder was purchased from Suzhou Kailexi Ecological Environment Technology Co., Ltd.

[0034] Example 1

[0035] Magnetic putty powder: 94.5 parts by weight of 250 mesh heavy calcium powder, 900 parts by weight of ferromagnetic powder, 3.5 parts by weight of hydroxypropyl methylcellulose ether, 2 parts by weight of starch ether,

[0036] Mixed solution: 200 parts by weight of water and 1000 parts by weight of corn pregelatinized starch.

[0037] Preparation method: weigh heavy calcium powder, ferromagnetic powder, hydroxypropyl methylcellulose ether and starch ether in sequence, add them into a blender and mix them evenly to obtain a finished magnetic putty powder.

[0038] Example 2

[0039] Magnetic putty powder: 84.5 parts by weight of 250 mesh heavy calcium powder, 850 parts by weight of ferromagnetic powder, 3.5 parts by weight of hydroxypropyl methylcellulose ether, 2 parts by weight of starch ether,

[0040] Mixed solution: 200 parts by weight of water and 1000 parts by weight of corn pregelatinized starch.

[0041] Preparation method: weigh heavy calcium powder, ferromagnetic powder, hydroxypropyl methylcellulose ether and starch ether in sequence, add them into a blender and mix them evenly to obtain a finished magnetic putty powder.

[0042] Comparative Example 1

[0043] Magnetic putty powder: 94.5 parts by weight of 250 mesh heavy calcium powder, 400 parts by weight of Fe2O3 powder, 500 parts by weight of ferromagnetic powder, 3.5 parts by weight of hydroxypropyl methylcellulose ether, 2 parts by weight of starch ether,

[0044] Mixed solution: 200 parts by weight of water and 1000 parts by weight of corn pregelatinized starch.

[0045] Preparation method: weigh heavy calcium powder, Fe2O3 powder, ferromagnetic powder, hydroxypropyl methylcellulose ether and starch ether in sequence, add them into a blender and mix them evenly to obtain a finished magnetic putty powder.

[0046] Comparative Example 2

[0047] Magnetic putty powder: 250 mesh heavy calcium powder 144.5 parts by weight, Fe2O3 powder 400 parts, ferromagnetic powder 450 parts by weight, hydroxypropyl methylcellulose ether 3.5 parts by weight, starch ether 2 parts by weight,

[0048] Mixed solution: 200 parts by weight of water and 1000 parts by weight of corn pregelatinized starch.

[0049] Preparation method: weigh heavy calcium powder, Fe2O3 powder, ferromagnetic powder, hydroxypropyl methylcellulose ether and starch ether in sequence, add them into a blender and mix them evenly to obtain a finished magnetic putty powder.

[0050] test:

[0051] The performance of the magnetic putty powder was tested: the magnetic putty powder prepared in Example 1, Example 2 and Comparative Example 1, Comparative Example 2 was mixed with the mixed solution at a mass ratio of 1:0.40 to obtain a slurry for testing. The test standard was the Chinese construction industry standard "Putty for Building Interiors (JG / T 298-2010)". The test results are shown in Tables 1 and 2.

[0052] Table 1

[0053]

[0054] Table 2

[0055] Flexibility Example 1 Diameter 100mm, no cracks Example 2 Diameter 100mm, no cracks Comparative Example 1 Diameter 100mm, with cracks Comparative Example 2 Diameter 100mm, with cracks

[0056] From the results in Table 1 and Table 2, it can be seen that the putty powder obtained by the formula and preparation method of the magnetic putty powder provided in the present application has excellent performance. From the implementation situation, the magnetic putty powder provided in the present application is easy to grind and does not crack. It can effectively absorb magnetic calligraphy and paintings and related magnetic objects without punching and bonding. All indicators meet the requirements of the Chinese construction industry standard "Putty for Building Interiors (JG / T 298-2010)".

[0057] Conclusion: Compared with the prior art, the magnetic putty powder prepared in the present application is obtained by evenly mixing the raw materials, is simple to make, has excellent performance, can maintain high magnetic bonding strength for a long time, and does not crack.

[0058] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A magnetic putty powder, characterized in that: The raw materials of the magnetic putty powder include, by weight, 80-100 parts of filler, 850-950 parts of ferromagnetic powder, 2.5-4.5 parts of water retaining agent and 1.5-2.5 parts of thickener.

2. The magnetic putty powder according to claim 1, characterized in that: The filler is any one or both of heavy calcium powder and talcum powder; optionally, the filler is heavy calcium powder.

3. The magnetic putty powder according to claim 2, characterized in that: The particle size of the heavy calcium powder is 250-325 mesh, and optionally, is 250 mesh.

4. The magnetic putty powder according to any one of claims 1 to 3, characterized in that: The ferromagnetic powder is magnetic ore powder Fe3O4, and the particle size of the ferromagnetic powder is 350-450 mesh; optionally, it is 400 mesh.

5. The magnetic putty powder according to any one of claims 1 to 3, characterized in that: The water retaining agent is cellulose ether; Optionally, the viscosity of the cellulose ether is in the range of 40,000 to 50,000 mPa·s.

6. The magnetic putty powder according to claim 5, characterized in that: The cellulose ether is selected from any one of methyl cellulose ether, hydroxypropyl methyl cellulose ether and carboxymethyl cellulose ether or a combination of several of them.

7. The magnetic putty powder according to claim 6, characterized in that: The cellulose ether is hydroxypropyl methyl cellulose ether.

8. The magnetic putty powder according to any one of claims 1 to 3, characterized in that: The thickener is starch ether; Optionally, the starch ether is selected from any one of potato modified starch ether, cassava modified starch ether, carboxymethyl starch ether, hydroxyethyl starch ether and hydroxypropyl starch ether; Optionally, the starch ether has a viscosity of 600-1600 mPa·s, a pH of 9-11, a particle size of <35 μm, and a moisture content of <5%.

9. A method for preparing the magnetic putty powder according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: according to a proportion, the filler, the ferromagnetic powder, the water retaining agent and the thickener are mixed uniformly to obtain a finished magnetic putty powder product.

10. A magnetic putty powder prepared by the method according to claim 9.

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