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A kind of gypsum-based putty with integrated bottom and surface and preparation method thereof

A gypsum-based putty technology, applied in the field of putty, can solve problems such as yellowing, poor layer-to-layer bonding, and hollowing

Active Publication Date: 2022-02-22
北新建材(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the different materials used for the bottom layer and the surface layer, there will be problems of poor bonding between the layers during the construction process, resulting in hollowing and cracking.
Moreover, due to the difference in the materials of the bottom layer and the surface layer, there are also defects. For example, the existing gypsum-based plastering mortar is mostly desulfurized gypsum, and it is prone to yellowing after matching with the surface layer putty. Another example is the existing interior wall. Most of the surface layer putty is not water resistant

Method used

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  • A kind of gypsum-based putty with integrated bottom and surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for preparing gypsum-based putty with integrated bottom and surface, comprising the steps of:

[0052] Step 100, mixing the water retaining agent, starch ether, polyvinyl alcohol particles, air-entraining agent, thixotropic agent, and antifungal agent in a mixer evenly to obtain a gypsum-based putty additive for use;

[0053] Step 200, mix the heavy calcium powder and the retarder in another mixer at a mass ratio of 9:1, and stir evenly to obtain the retarder additive for use;

[0054] Step 300, adding construction gypsum and heavy calcium powder into a third mixer according to a specified ratio and mixing, adding the above-mentioned gypsum-based putty additive and retarder additive according to the lowest ratio, and mixing evenly to obtain a gypsum-based putty semi-finished product;

[0055] Step 400, test the setting time of the gypsum-based putty semi-finished product, and adjust the amount of retarder added in step 200 according to the result of the setting...

Embodiment 2

[0060] A method for preparing gypsum-based putty with integrated bottom and surface, comprising the steps of:

[0061] In step 100, the water-retaining agent, starch ether, polyvinyl alcohol particles, air-entraining agent, thixotropic agent, and antifungal agent are stirred and mixed in the autoclave, the temperature and pressure of the autoclave are adjusted, and the gypsum base is obtained by ultrasonic vibration treatment. Putty additives.

[0062] By changing the temperature and pressure conditions during the mixing process, its components can be mixed more fully. The specific steps for adjusting the temperature and pressure of the autoclave are:

[0063] Step 101, raising the temperature from room temperature to 50-64°C at a heating rate of 4-6°C / min;

[0064] Step 102. Stir and mix evenly at a rate of 600-800 rpm after heating up, and add tap water to it until it becomes viscous after mixing evenly;

[0065] Step 103, ultrasonically oscillating the viscous mixture, a...

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Abstract

The embodiment of the present invention discloses a gypsum-based putty with integrated bottom and surface, which is composed of the following raw materials in parts by weight: 40-50 parts of building gypsum powder, 30-50 parts of heavy calcium powder, 0.3-0.5 parts of water-retaining agent, and starch ether 0.04-0.06 parts, 0.01-0.1 parts of retarder, 0.4-0.6 parts of polyvinyl alcohol particles, 0.05-0.08 parts of air-entraining agent, 0.03-0.06 parts of thixotropic agent and 0.02-0.04 parts of mold inhibitor; also includes a A preparation method, through the preparation of additives and the mixing with building gypsum powder and heavy calcium powder, the finished product can be directly obtained through mechanical mixing at normal temperature; the invention can be used for bottom leveling and surface coating at the same time, overcoming the need The defects caused by different types of putty are used, and the preparation process is an assembly line production process, which can automatically produce the aforementioned putty powder in batches according to the set conditions.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of putty, and in particular to a gypsum-based putty with integrated bottom and surface and a preparation method thereof. Background technique [0002] The current interior wall decoration construction steps generally include the steps of leveling the bottom layer with the bottom leveling putty, repairing the groove area with the caulking paste, scraping the surface layer with the surface layer putty, and applying the surface layer paint. In the above steps, the bottom layer is mainly leveled and the surface layer is scraped. Because of the needs of the project, generally speaking, the materials used for the bottom layer and the surface layer are different. Although there are certain differences in different regions, the bottom layer is generally For gypsum plastering mortar made of gypsum, the surface layer is generally surface layer putty made of Shuangfei powder. [0003] Due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B111/20
CPCC04B28/14C04B2111/2092
Inventor 卢鑫善徐刚欧阳兵
Owner 北新建材(苏州)有限公司