An interior wall putty and a method for preparing the same

Abstract

The application discloses an interior wall putty and a preparation method thereof, and belongs to the technical field of building material processing. The interior wall putty comprises the following components: 30-40 parts of white cement, 0-40 parts of quartz powder, 30-70 parts of dolomite powder, 0.5-2 parts of dispersible latex powder, 0.1-1 part of wood fiber, 0.1-1 part of cellulose ether, and 0.01-0.1 part of starch ether. The application uses dolomite with a lower price as a putty filler, and through the joint action of the dolomite, the base cement and the additives, the interior wall putty with high water resistance and high bonding strength is prepared, and the prepared interior wall putty meets the index requirements of the general type (Y), the flexible type (R) and the water-resistant type (N) interior wall putty specified in JG / T 298-2010 'Putty for Building Interior Wall'. In addition, the preparation cost of the putty can be significantly reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of building material processing, and particularly relates to an interior wall putty and a preparation method thereof. BACKGROUND

[0002] For the putty powder industry, with the continuous improvement of people's environmental protection consciousness, the society puts forward new requirements for the putty powder industry. The market also has higher and higher requirements for green, consumption reduction and environmental protection indexes of putty powder products. Green putty powder products will become the future development trend of the industry.

[0003] Putty is a kind of building material commonly used in indoor and outdoor decoration, which is mainly composed of a base material (binder), a filler, an additive and water. It has the characteristics of easy construction, easy brushing, flatness and durability, and can be used to fill cracks, unevenness and other defects on the surface of walls and ceilings, so as to make the wall surface more smooth and flat for subsequent paint or wallpaper construction.

[0004] At present, the putty used for the decoration of building interior wall is mainly a two-component product of liquid or colloid and powder, which needs to be configured on site. In the case of random use of materials, random formula and only considering the consistency, it is scraped on the interior wall, and the random construction leads to the problems of falling off and wall cracking after several years of use, which causes great confusion to the users and affects the reputation of the product. In addition, the current building interior wall putty is mostly prepared by using talc powder, quartz sand and other fillers, but there are problems of high cost, low bonding strength and poor water resistance. SUMMARY

[0005] The purpose of the present application is to provide an interior wall putty and a preparation method thereof. The purpose is to solve the problems of high cost, low bonding strength and poor water resistance of the current building interior wall putty which is mostly prepared by using talc powder, quartz sand and other fillers.

[0006] In a first aspect, the present application provides an interior wall putty, which comprises the following components in parts by weight: white cement 30-40 parts, quartz powder 0-40 parts, dolomite powder 30-70 parts, dispersible latex powder 0.5-2 parts, wood fiber 0.1-1 part, cellulose ether 0.1-1 part, and starch ether 0.01-0.1 part.

[0007] In the present application, the inventors found that by using white dolomite with lower price as the putty filler, through the joint action of the filler, the base material cement and the additive, an interior wall putty with high water resistance and high bonding strength can be prepared, and the preparation cost of the putty can be significantly reduced.

[0008] In some implementations, the interior wall putty includes the following components: 30-40 parts white cement, 15-30 parts quartz powder, 30-60 parts dolomite powder, 0.5-2 parts dispersible latex powder, 0.1-1 parts wood fiber, 0.1-1 parts cellulose ether, and 0.01-0.1 parts starch ether.

[0009] In this invention, the inventors further discovered that when white cement, quartz powder, and dolomite powder are in a specific ratio range, the resulting interior wall putty has higher bonding strength.

[0010] In some implementations, the interior wall putty includes the following components: 30 parts white cement, 17.5 parts quartz powder, 52.5 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether.

[0011] In some implementations, the white cement is PW 42.5 white silicate cement.

[0012] In some implementations, the quartz powder has a fineness of less than 0.075 mm.

[0013] In some implementations, dolomite powder is prepared by crushing, grinding, classifying and drying raw dolomite ore, and the fineness of the dolomite powder is less than 0.15 mm.

[0014] In some embodiments, the redispersible latex powder is 4036N type redispersible latex powder, the cellulose ether is HPMC-200000S type cellulose ether, and the starch ether is 301 hydroxypropyl starch ether.

[0015] In this invention, the inventors discovered that by selecting specific dispersible latex powder, wood fiber, cellulose ether, and starch ether as additives, the above additives can work synergistically to obtain interior wall putty that is easy to apply and has high bonding strength, and meets the index requirements of general type (Y), flexible type (R), and water-resistant type (N) interior wall putty specified in JG / T 298-2010 "Putty for Building Interior Walls".

[0016] In a second aspect, the present invention provides a method for preparing the above-mentioned interior wall putty, comprising the following steps:

[0017] S1. Mix white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether, and then stir to obtain a mixture. S2. Add water to the mixture and stir to obtain a slurry. S3. After molding and curing the slurry, interior wall putty is obtained.

[0018] In some implementations, step S1 includes stirring for a time of 2-6 minutes, for example, 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes or other values ​​within that range.

[0019] In some embodiments, step S2, the stirring process includes: a stirring time of 1-4 min, for example, 1 min, 1.5 min, 2 min, 2.5 min, 3 min, 3.5 min, 4 min or other values ​​within this range; and a solid content of slurry of 0.25-0.32 g / mL, for example, 0.25 g / mL, 0.26 g / mL, 0.27 g / mL, 0.28 g / mL, 0.29 g / mL, 0.3 g / mL, 0.31 g / mL, 0.32 g / mL or other values ​​within this range.

[0020] It should be noted that both molding and curing are carried out using conventional methods in this field.

[0021] The beneficial effects of this invention are as follows: Unlike existing technologies, this invention uses dolomite, which is less expensive, as a putty filler. Through the combined action of dolomite, cement, and additives, it produces an interior wall putty with strong water resistance and high bonding strength, meeting the index requirements specified in JG / T 298-2010 "Putty for Building Interior Walls" for general (Y), flexible (R), and water-resistant (N) types of interior wall putty. Furthermore, this invention can significantly reduce the preparation cost of the putty. Attached Figure Description

[0022] Figure 1 This is a flowchart illustrating the preparation process of the interior wall putty in this invention.

[0023] Figure 2 The graph shows the water absorption test results of the interior wall putty prepared in Examples 1-7 of this invention. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] Experimental methods not specified in the examples are generally performed under conventional conditions and as described in the manual, or as recommended by the manufacturer. Unless otherwise specified, the general equipment, materials, reagents, etc. used are commercially available.

[0026] In this invention, the wood fiber was purchased from Chuangsheng Building Materials.

[0027] In this invention, the chemical multi-element and mineral phase composition of dolomite was tested and analyzed, and the results are as follows: the loss on ignition of dolomite is relatively large, reaching 45.78%, and it is mainly composed of CaO (31.85%), MgO (21.33%) and trace amounts of SiO2 (0.74%), Al2O3 (0.17%), and Fe2O3 (0.09%); the main crystalline phase of dolomite is dolomite, and no other mineral phases were found.

[0028] Please see Figure 1 The present invention is a process flow diagram for preparing interior wall putty, which specifically includes the following steps: S1, mixing white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether, and then stirring to obtain a mixture; S2, adding water to the mixture and then stirring to obtain a slurry; S3, shaping and curing the slurry sequentially to obtain interior wall putty.

[0029] Example 1

[0030] An interior wall putty, by weight, comprises the following components: 30 parts white cement, 0 parts quartz powder, 70 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether.

[0031] The preparation method of this interior wall putty includes the following steps:

[0032] S1. Add white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether to a mixer and mix. Then stir for 4 minutes to obtain a mixture.

[0033] S2. Add the mixture obtained in step S1 to the cement mortar mixer, then add water to the cement mortar mixer, and then stir for 2 minutes to obtain a uniform slurry with a solid content of 0.3 g / mL.

[0034] S3. The uniform slurry obtained in step S2 is injected into a steel mold to form a shape and cured at room temperature to obtain interior wall putty.

[0035] Example 2

[0036] An interior wall putty, by weight, comprises the following components: 30 parts white cement, 17.5 parts quartz powder, 52.5 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether.

[0037] The preparation method of this interior wall putty includes the following steps:

[0038] S1. Add white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether to a mixer and mix. Then stir for 4 minutes to obtain a mixture.

[0039] S2. Add the mixture obtained in step S1 to the cement mortar mixer, then add water to the cement mortar mixer, and then stir for 2 minutes to obtain a uniform slurry with a solid content of 0.3 g / mL.

[0040] S3. The uniform slurry obtained in step S2 is injected into a steel mold to form a shape and cured at room temperature to obtain interior wall putty.

[0041] Example 3

[0042] An interior wall putty, by weight, comprises the following components: 30 parts white cement, 40 parts quartz powder, 30 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether.

[0043] The preparation method of this interior wall putty includes the following steps:

[0044] S1. Add white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether to a mixer and mix. Then stir for 4 minutes to obtain a mixture.

[0045] S2. Add the mixture obtained in step S1 to the cement mortar mixer, then add water to the cement mortar mixer, and then stir for 2 minutes to obtain a uniform slurry with a solid content of 0.3 g / mL.

[0046] S3. The uniform slurry obtained in step S2 is injected into a steel mold to form a shape and cured at room temperature to obtain interior wall putty.

[0047] Example 4

[0048] An interior wall putty, by weight, comprises the following components: 35 parts white cement, 17.5 parts quartz powder, 47.5 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether.

[0049] The preparation method of this interior wall putty includes the following steps:

[0050] S1. Add white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether to a mixer and mix. Then stir for 4 minutes to obtain a mixture.

[0051] S2. Add the mixture obtained in step S1 to the cement mortar mixer, then add water to the cement mortar mixer, and then stir for 2 minutes to obtain a uniform slurry with a solid content of 0.3 g / mL.

[0052] S3. The uniform slurry obtained in step S2 is injected into a steel mold to form a shape and cured at room temperature to obtain interior wall putty.

[0053] Example 5

[0054] An interior wall putty, by weight, comprises the following components: 40 parts white cement, 0 parts quartz powder, 60 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether.

[0055] The preparation method of this interior wall putty includes the following steps:

[0056] S1. Add white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether to a mixer and mix. Then stir for 4 minutes to obtain a mixture.

[0057] S2. Add the mixture obtained in step S1 to the cement mortar mixer, then add water to the cement mortar mixer, and then stir for 2 minutes to obtain a uniform slurry with a solid content of 0.3 g / mL.

[0058] S3. The uniform slurry obtained in step S2 is injected into a steel mold to form a shape and cured at room temperature to obtain interior wall putty.

[0059] Example 6

[0060] An interior wall putty, by weight, comprises the following components: 40 parts white cement, 15 parts quartz powder, 45 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether.

[0061] The preparation method of this interior wall putty includes the following steps:

[0062] S1. Add white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether to a mixer and mix. Then stir for 4 minutes to obtain a mixture.

[0063] S2. Add the mixture obtained in step S1 to the cement mortar mixer, then add water to the cement mortar mixer, and then stir for 2 minutes to obtain a uniform slurry with a solid content of 0.3 g / mL.

[0064] S3. The uniform slurry obtained in step S2 is injected into a steel mold to form a shape and cured at room temperature to obtain interior wall putty.

[0065] Example 7

[0066] An interior wall putty, by weight, comprises the following components: 40 parts white cement, 30 parts quartz powder, 30 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether.

[0067] The preparation method of this interior wall putty includes the following steps:

[0068] S1. Add white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether to a mixer and mix. Then stir for 4 minutes to obtain a mixture.

[0069] S2. Add the mixture obtained in step S1 to the cement mortar mixer, then add water to the cement mortar mixer, and then stir for 2 minutes to obtain a uniform slurry with a solid content of 0.3 g / mL.

[0070] S3. The uniform slurry obtained in step S2 is injected into a steel mold to form a shape and cured at room temperature to obtain interior wall putty.

[0071] Comparative Example 1

[0072] The composition and preparation method of the interior wall putty in this comparative example are basically the same as those in Example 1. The difference is that dispersible latex powder, wood fiber, cellulose ether and starch ether are not added to the interior wall putty.

[0073] Comparative Example 2

[0074] The composition and preparation method of the interior wall putty in this comparative example are basically the same as those in Example 1. The difference is that no wood fiber, cellulose ether and starch ether are added to the interior wall putty.

[0075] Comparative Example 3

[0076] The composition and preparation method of the interior wall putty in this comparative example are basically the same as those in Example 1, except that cellulose ether and starch ether are not added to the interior wall putty.

[0077] Comparative Example 4

[0078] The composition and preparation method of the interior wall putty in this comparative example are basically the same as those in Example 1, except that starch ether is not added to the interior wall putty.

[0079] Performance testing

[0080] The performance of the interior wall putty prepared in Examples 1-7 and Comparative Examples 1-4 was tested. The test methods were carried out in accordance with the methods specified in JG / T 298-2010 "Putty for Building Interior Walls" for general type (Y), flexible type (R) and water-resistant type (N) interior wall putty. The test results are shown in Table 1 below:

[0081] Table 1 Performance test results of the interior wall putty prepared in Examples 1-7 and Comparative Examples 1-4

[0082]

[0083] As can be seen from the data in Table 1, the interior wall putty prepared in Examples 1-7 exhibits excellent performance, meeting the index requirements specified in JG / T 298-2010 "Putty for Building Interior Walls" for general (Y), flexible (R), and water-resistant (N) types of interior wall putty. Compared to Examples 1 and 3 (without adding quartz powder), adding a certain amount of quartz powder to the interior wall putty further improves its bonding strength.

[0084] In Comparative Example 1, no additives were added, and the bonding strength of the prepared interior wall putty was found to be 0. In Comparative Examples 2-4, some additives were added, and the prepared pastes had poor performance, were difficult to apply, and had low strength. The results show that, in this invention, by adding specific additives, the performance of interior wall putty can be further improved.

[0085] The water absorption of the interior wall putty prepared in Examples 1-7 was tested according to the method specified in JG / T157-2009 "Putty for Building Exterior Walls". The test results are as follows. Figure 2 As shown.

[0086] from Figure 2 As can be seen from Examples 1-3 and 5-7, the water absorption of the prepared interior wall putty decreases with the increase of quartz powder addition. This is because after adding quartz powder, it occupies some of the original voids in the putty, thereby reducing the number and size of pores and increasing its overall density, thus preventing water penetration and absorption. Simultaneously, due to the high hardness and corrosion resistance of quartz powder, it effectively prevents the putty material from absorbing water, softening, and peeling off in humid environments. Since quartz powder is relatively expensive, by adding a certain amount of quartz powder and readily available and cheaper dolomite powder, the prepared interior wall putty achieves both low water absorption and high bonding strength.

[0087] In summary, this invention uses dolomite as a putty filler. Through its combined action with the base material cement and additives, an interior wall putty with strong water resistance and high bonding strength is prepared, which meets the index requirements of general type (Y), flexible type (R), and water-resistant type (N) interior wall putty specified in JG / T 298-2010 "Putty for Building Interior Walls".

[0088] It should be noted that all the above embodiments belong to the same inventive concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0089] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An interior wall putty, characterized in that, By weight, the interior wall putty comprises the following components: 30 parts white cement, 17.5 parts quartz powder, 52.5 parts dolomite powder, 1.4 parts dispersible latex powder, 0.3 parts wood fiber, 0.3 parts cellulose ether, and 0.05 parts starch ether; The fineness of the quartz powder is less than 0.075 mm; The dolomite powder is prepared by crushing, grinding, classifying and drying raw dolomite ore, and the fineness of the dolomite powder is less than 0.15 mm.

2. The interior wall putty according to claim 1, characterized in that, The white cement is PW 42.5 white silicate cement.

3. The interior wall putty according to claim 1, characterized in that, The redispersible latex powder is 4036N type redispersible latex powder, the cellulose ether is HPMC-200000S type cellulose ether, and the starch ether is 301 hydroxypropyl starch ether.

4. The method for preparing interior wall putty according to any one of claims 1-3, characterized in that, Includes the following steps: S1. Mix white cement, quartz powder, dolomite powder, dispersible latex powder, wood fiber, cellulose ether, and starch ether, and then stir to obtain a mixture. S2. Add water to the mixture and then stir to obtain a slurry; S3. After the slurry is successively molded and cured, the interior wall putty is obtained.

5. The method for preparing interior wall putty according to claim 4, characterized in that, In step S1, the stirring process includes stirring for 2-6 minutes.

6. The method for preparing interior wall putty according to claim 4, characterized in that, In step S2, the stirring process includes: stirring for 1-4 minutes; and the solid content of the slurry is 0.25-0.32 g / mL.

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