Environment-friendly wall surface interfacial agent and preparation method thereof

A kind of interface agent, environment-friendly technology, applied in the direction of coating, etc., can solve the problems of low sealing force and bonding strength, not durable aging resistance, insufficient wall penetration, etc., and achieve good water resistance and enhanced bonding force, improve the effect of storage stability

Active Publication Date: 2017-06-13
北京市创新玮地科贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these interface agents can delay the appearance of cracking and peeling to a certain extent, some products have low environmental protection performance and add harmful substances such as formaldehyde; some products have poor construction performance and are sticky and difficult to paint or splash; the most important

Method used

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  • Environment-friendly wall surface interfacial agent and preparation method thereof
  • Environment-friendly wall surface interfacial agent and preparation method thereof
  • Environment-friendly wall surface interfacial agent and preparation method thereof

Examples

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preparation example Construction

[0027] The preparation method of the above-mentioned environment-friendly wall interface agent comprises the steps as follows:

[0028] S1 Add deionized water and polyvinyl alcohol in proportion to the reactor and heat up to completely dissolve, then add EDTA, sodium bicarbonate in sequence, then slowly add ammonium persulfate, vinyl acetate, and butyl acrylate dropwise to synthesize polyvinyl acetate emulsion, and set aside ;

[0029] S2 Add deionized water and polyvinyl alcohol in proportion to the reaction kettle and heat up to completely dissolve, add functional additives and react for 1.5 hours, then cool to obtain a modified polyvinyl alcohol solution, set aside;

[0030] S3 Finally, add the polyvinyl acetate emulsion prepared in step S1 and the functional emulsion, defoamer, and bactericide in sequence to the modified polyvinyl alcohol solution obtained in step S2 and stir evenly to obtain a finished product.

Embodiment 1

[0032] Add 59.74g of deionized water and 6g of polyvinyl alcohol into the reaction flask and raise the temperature to 85°C for 1 hour, then add 0.045g of EDTA and 0.065g of sodium bicarbonate in turn after cooling down to 72°C, then slowly dropwise add 0.15g of ammonium persulfate and 28g of vinyl acetate Ester, 6g butyl acrylate, synthetic non-volatile matter content is that the polyvinyl acetate emulsion of 40% is standby;

[0033] Then 70.2g of deionized water and 2.0g of polyvinyl alcohol 1788 were added into the reaction flask and the temperature was raised to 85°C for 1h. Add 0.2g titanate coupling agent to react for 1.5h, then cool to obtain a modified polyvinyl alcohol solution, which is set aside;

[0034] Finally, 17.5 g of prepared polyvinyl acetate emulsion, 10.0 g of VAE emulsion, 0.05 g of defoamer, and 0.05 g of bactericide were sequentially added into the modified polyvinyl alcohol solution and stirred evenly to obtain a finished product.

Embodiment 2

[0036] Add 59.74g of deionized water and 6g of polyvinyl alcohol into the reaction flask and raise the temperature to 85°C for 1 hour, then add 0.045g of EDTA and 0.065g of sodium bicarbonate in turn after cooling down to 72°C, then slowly dropwise add 0.15g of ammonium persulfate and 28g of vinyl acetate Ester, 6g butyl acrylate, synthetic non-volatile matter content is that the polyvinyl acetate emulsion of 40% is standby;

[0037] Then, 71.0 g of deionized water and 2.0 g of polyvinyl alcohol 1788 were added into the reaction flask and the temperature was raised to 85° C. for 1 h. Add 0.4g titanate coupling agent and react for 1.5h, then cool to obtain a modified polyvinyl alcohol solution, which is set aside;

[0038] Finally, 12.5 g of prepared polyvinyl acetate emulsion, 14.0 g of VAE emulsion, 0.05 g of defoamer, and 0.05 g of bactericide were sequentially added into the modified polyvinyl alcohol solution and stirred evenly to obtain a finished product.

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Abstract

The invention discloses an environment-friendly wall surface interfacial agent and a preparation method thereof. The environment-friendly wall surface interfacial agent is prepared from the following components in percentage by mass: 70.2-74 percent of deionized water, 2-4 percent of polyvinyl alcohol, 7.5-17.5 percent of polyvinyl acetate emulsion, 0.2-0.4 percent of a functional additive, 10-14 percent of a functional emulsion, 0.05-0.1 percent of a defoamer and 0.05-0.1 percent of a fungicide. The preparation method comprises the following steps: adding the deionized water and the polyvinyl alcohol in a reaction kettle according to a ratio, rising the temperature to completely dissolve the deionized water and the polyvinyl alcohol, adding the functional additive, carrying out reaction for a certain time and cooling, then sequentially adding the polyvinyl acetate emulsion, other functional emulsions, the defoamer and the fungicide in the reaction kettle, and uniformly stirring to prepare the environment-friendly interfacial agent. The product is used for surface treatment of various walls, is liable in film formation, strong in seepage force and excellent in water resistance, can be used for cement hair manufacturing, can greatly improve the subsequent construction performance of a wall surface and remarkably improves the bonding strength of plastering mortar to the wall surface.

Description

technical field [0001] The invention belongs to the technical field of chemical building materials, and in particular relates to a water-based environment-friendly wall interface agent. Background technique [0002] At present, since most of the building walls will crack, hollow or even fall off when the subsequent plastering mortar layer is applied, some completed walls will soon appear alkali-returning and peeling phenomena. The existing method is to use 107 glue, 108 glue, white latex, etc. or compound them with the above various glues as interface agents to treat the wall surface. Although these interface agents can delay the appearance of cracking and peeling to a certain extent, some products have low environmental performance and add harmful substances such as formaldehyde; some products have poor construction performance, are sticky and difficult to paint or splash, etc.; The most important thing is that the product has insufficient penetration to the wall, low seal...

Claims

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Application Information

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IPC IPC(8): C09D131/04C09D129/04C08F218/08C08F220/18
CPCC08F218/08C08L2205/025C08L2205/03C09D131/04C08L31/04C08L29/04C08F220/1804
Inventor 关爱君李丁丁
Owner 北京市创新玮地科贸有限公司
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