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Cement mortar water retaining agent and preparation method thereof

A technology of cement mortar and water-retaining agent, which is applied in the field of production and preparation of water-retaining agent, and can solve problems such as poor water retention and layered segregation

Inactive Publication Date: 2018-03-23
ANHUI EMINENT BUILDING MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned prior art, the purpose of the present invention is to overcome the problem that cement mortar is easily separated due to poor water retention in the prior art, thereby providing a method that can make cement mortar have good water retention, which can be improved in a simple way. Cement mortar water retaining agent for water retention of cement mortar and preparation method thereof

Method used

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Examples

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Effect test

preparation example Construction

[0015] The present invention provides a kind of preparation method of cement mortar water retaining agent, wherein, described preparation method comprises:

[0016] 1) Put the starch and water at a temperature of 60-100° C., stir and mix for 30-50 minutes to prepare a starch paste;

[0017] 2) In the presence of a cross-linking agent, the starch paste and acrylamide are stirred and mixed at a temperature of 40-50° C. for 3-5 hours to prepare the mixture M1;

[0018] 3) mixing alcohol lamp ashes, vermiculite powder and metal salt solution, placing them at a temperature of 80-120°C and stirring for 2-3 hours, then taking the precipitate and drying it to obtain a powder;

[0019] 4) The powder prepared in step 3), polyvinyl alcohol powder and acrylonitrile were added to the mixture M1, mixed and then filtered and dried to obtain a water retaining agent for cement mortar.

[0020] In the present invention, starch and water are mixed to prepare starch paste, and then the above-men...

Embodiment 1

[0032] 1) Put 10 parts by weight of starch and 30 parts by weight of water at a temperature of 60° C., stir and mix for 30 minutes to prepare a starch paste;

[0033] 2) In the presence of N.N'-methylenebisacrylamide, the above starch paste and 5 parts by weight of acrylamide were stirred and mixed at a temperature of 40°C for 3 hours to prepare a mixture M1;

[0034] 3) 5 parts by weight of alcohol lamp ashes, 3 parts by weight of vermiculite powder and 100 parts by weight of lanthanum nitrate solution (concentration: 5% by weight) were mixed and placed at a temperature of 110° C. for 1 h, then placed in After stirring and heating at 80°C for 0.5h, the precipitate was taken and dried to obtain a powder;

[0035] 4) 3 parts by weight of the powder prepared in step 3), 5 parts by weight of polyvinyl alcohol powder and 10 parts by weight of acrylonitrile were added to the mixture M1, mixed and then filtered and dried to prepare the cement mortar water retaining agent A1.

Embodiment 2

[0037] 1) Put 10 parts by weight of starch and 50 parts by weight of water at a temperature of 100° C., stir and mix for 50 minutes to prepare a starch paste;

[0038] 2) In the presence of N.N'-methylenebisacrylamide, the above starch paste and 15 parts by weight of acrylamide were stirred and mixed at a temperature of 50°C for 5 hours to prepare a mixture M1;

[0039] 3) 10 parts by weight of alcohol lamp ashes, 6 parts by weight of vermiculite powder and 100 parts by weight of lanthanum nitrate solution (concentration: 8% by weight) were mixed and placed at a temperature of 120 ° C for 1.5 h, then placed After stirring and heating at a temperature of 105°C for 2 hours, the precipitate was taken and dried to obtain a powder;

[0040] 4) 6 parts by weight of the powder prepared in step 3), 10 parts by weight of polyvinyl alcohol powder and 10 parts by weight of acrylonitrile were added to the mixture M1, mixed and then filtered and dried to obtain cement mortar water retainin...

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Abstract

The invention discloses a cement mortar water retaining agent and a preparation method thereof. The preparation method comprises the following steps: firstly, putting starch and water under the condition that the temperature is 60 to 100 DEG C, stirring and mixing for 30 to 50 minutes to obtain starch paste; secondly, in the presence of a cross-linking agent, putting the starch paste and acrylamide under the condition that the temperature is 40 to 50 DEG C, stirring and mixing for 3 to 5 hours to obtain a mixture M1; thirdly, mixing alcohol burner ash, vermiculite powder and a metallic salt solution and putting a mixed solution under the condition that the temperature is 80 to 120 DEG C, stirring for 2 to 3 hours, and taking precipitate for drying to obtain powder; fourthly, adding the powder obtained in the third step, polyvinyl alcohol powder and acrylonitrile into the mixture M1 for mixing, and then filtering and drying to obtain the cement mortar water retaining agent. According tothe cement mortar water retaining agent, the effects that cement mortar is enabled to have a good water retaining property , and the water retaining property of the cement mortar can be improved justby adopting a simple mode are achieved.

Description

technical field [0001] The invention relates to the field of production and preparation of water-retaining agents, in particular to cement mortar water-retaining agents and a preparation method thereof. Background technique [0002] As we all know, cement mortar, as an important building material, is widely used in construction. However, during the use of cement mortar, due to environmental factors and the passage of time, the water retention of cement mortar is often poor, resulting in problems such as layering and segregation, which in turn makes the cement mortar unusable, and the cement mortar that has been used It may cause problems such as the quality of the building. [0003] Therefore, it is an urgent problem to be solved in the present invention to provide a water retaining agent for cement mortar that can make cement mortar have good water retention and improve the water retention of cement mortar in a simple way and its preparation method. Contents of the inven...

Claims

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Application Information

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IPC IPC(8): C04B24/38C08B31/00C08F251/00C08F220/56C04B103/46
CPCC04B40/0039C04B2103/465C08B31/003C08F251/00C04B24/38C04B14/202C04B18/06C04B24/2623C04B24/125C04B22/085C08F220/56C08F222/385
Inventor 万贤虎
Owner ANHUI EMINENT BUILDING MATERIALS TECH
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