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A kind of surface layer latex putty powder and preparation method thereof

A putty powder and latex technology, applied in the direction of filling slurry, etc., can solve the problems of high roughness of putty powder, insufficient safety and environmental protection of talc powder, etc., to increase the integrity and surface finish, increase adsorption and water retention, enhance adhesive effect

Active Publication Date: 2021-09-17
湖北恒自然新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high roughness of putty powder in the prior art and insufficient safety and environmental protection of putty using talcum powder, the application provides a putty powder with delicate surface, low cost, safety and environmental protection

Method used

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  • A kind of surface layer latex putty powder and preparation method thereof
  • A kind of surface layer latex putty powder and preparation method thereof
  • A kind of surface layer latex putty powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A surface layer latex putty powder, composed of the following raw materials in weight ratio: 86 parts of talcum powder, 9 parts of lime calcium powder, 4.5 parts of binder, 4 parts of porous calcium phosphate and 1.5 parts of strengthening agent, specifically, binder Compared with the strengthening agent, the parts by weight of the total weight are 3.26 parts of cellulose, 0.24 parts of gelatinized starch, 0.26 parts of glutinous rice flour, 0.72 parts of polyvinyl alcohol, 0.06 parts of starch ether, 0.85 parts of latex powder, and 0.05 parts of anionic surfactant , 0.40 parts of silicon carbide and 0.22 parts of zinc oxide.

[0039] In this embodiment, talcum powder has the largest proportion as the main raw material of putty powder, and the ash calcium powder and binder work together to increase water retention, viscosity, hardness, workability, etc., so that it has the basic properties of putty powder. Performance, while porous calcium phosphate and strengthening ag...

Embodiment 2

[0077] In this example, on the basis of Example 1, in order to make the porous calcium phosphate more suitable for the putty powder, the preparation method of the porous calcium phosphate is further optimized and limited.

[0078] Specifically, the present invention adopts specific steps to prepare porous calcium phosphate, and the porous calcium phosphate prepared by these steps is different from the existing porous calcium phosphate application scene due to its specific shape and mechanism, and has better adaptability in putty powder high. The preparation method of porous calcium phosphate comprises the following steps:

[0079] S1, calcium hydroxide is passed through a 300 mesh sieve, and the mass ratio of calcium hydroxide: water is 1:2, and water is added to the calcium hydroxide powder;

[0080] S2, drip phosphoric acid into the solution obtained in step S1 under the condition of 500r / min;

[0081] S3, add the cellulose that accounts for calcium hydroxide and phosphori...

Embodiment 3

[0106] On the basis of Example 2, this embodiment further defines the molar ratio of phosphoric acid and calcium hydroxide.

[0107] Concrete, the reaction equation of calcium hydroxide and phosphoric acid is:

[0108] 3Ca(OH) 2 +2H 3 PO 4 → Ca 3 (PO 4 ) 2 +3H 2 o

[0109] The molar ratio of calcium hydroxide and phosphoric acid is 3:2, and the reactant is completely calcium phosphate. However, in the actual reaction, the conversion rate of calcium phosphate is difficult to reach 100%. Properly increasing the amount of phosphoric acid can increase the conversion rate and make the reaction more complete. , to avoid incomplete reaction and excessive residual calcium hydroxide. Since the sintering temperature in the later stage is up to 850°C, the residual calcium hydroxide will be dehydrated into calcium oxide during the sintering process, and the high content of calcium oxide in the putty powder will cause the product to be highly alkaline and yellow. In addition, this...

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Abstract

The application relates to the field of putty powder for interior walls of buildings, in particular to a surface layer latex putty powder and a preparation method thereof. The raw materials of the surface layer latex putty powder include talcum powder, calcium ash powder, porous calcium phosphate, a binder and a strengthening agent. The binder includes cellulose, gelatinized starch, glutinous rice flour, polyvinyl alcohol and starch ether, and the strengthening agent includes latex powder, anionic surfactant, silicon carbide and zinc oxide, and the preparation process of porous calcium phosphate is prepared by controlling The reactant content and preparation conditions during calcium phosphate, as well as conditions such as controlling the content of pore-forming agent and sintering temperature, in order to obtain the porous calcium phosphate whose performance is more suitable for this application. In addition, talcum powder with lower cost is used as the main raw material to reduce the cost of putty powder. At the same time, talc powder is more delicate than the existing putty powder, which reduces the roughness of the putty surface and makes the finish of the putty powder on the surface better. , and the combination of each component improves the workability, water resistance, wear resistance and bonding strength of the putty powder.

Description

technical field [0001] The application relates to the field of building interior wall putty powder, in particular to a surface layer latex putty powder and a preparation method thereof. Background technique [0002] For a long time, putty has only been used as a supporting material for base leveling and filling. The composition of putty powder often only focuses on application and leveling, ignoring its safety, environmental protection and water resistance. Those who crack, fall off or cause physical discomfort during long-term use. Putty powder is mainly divided into bottom putty powder and surface putty powder. The bottom layer putty powder is used to fill the unevenness of the wall surface, and the surface layer putty powder is mainly used to further fill and smooth the surface, so as to facilitate the color development and color fixation of subsequent wall paint. . The main component of the existing surface layer putty powder is gray calcium or heavy calcium, and the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 钱平
Owner 湖北恒自然新型建材科技有限公司