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Concrete interface defoaming agent for gypsum plaster and preparation method and application of concrete interface defoaming agent

A technology for plastering gypsum and concrete, applied in the field of coatings, can solve problems such as affecting project quality, insignificant effect, plastering gypsum foaming, etc., and achieve the effects of improving project quality, reducing project cost, and eliminating surface tension

Active Publication Date: 2019-06-21
HANGZHOU LAIBAODE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The foaming phenomenon of plastering gypsum during the construction process is relatively serious, which greatly affects the quality of the project
In order to solve this problem, manual plastering construction often adopts the method of secondary construction, and mechanical spraying plastering construction often applies cement-based concrete interface agent on the concrete surface, but the effect of both is not significant

Method used

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  • Concrete interface defoaming agent for gypsum plaster and preparation method and application of concrete interface defoaming agent
  • Concrete interface defoaming agent for gypsum plaster and preparation method and application of concrete interface defoaming agent

Examples

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Effect test

Embodiment 1

[0025] A concrete interface defoamer for plastering gypsum, comprising: 10% styrene-acrylic emulsion, 5% emulsified paraffin, 10% styrene-butadiene emulsion, 0.05% film-forming aid (dodecyl alcohol ester), and bactericide 0.05%, 20% hyperbranched polyester amine solution 4%, PMMA nanofiber 2%, sizing agent 0.05%, nanoparticles (styrene nanoparticles) 3%, polymer dispersant 0.05%, concentration 5% The remainder of the PVA solution. Hyperbranched polyester amine has many active terminal branches, which can be used as a medium to connect various components as a whole, thereby synergistically synergizing. The addition of PMMA nanofibers can be used to improve the bond strength of the defoamer after film formation. The sizing agent is used to infiltrate and activate the surface of PMMA nanofibers to improve the degree of integration with other components. The polymer dispersant improves the dispersion of nanoparticles through the mechanism of steric hindrance stabilization, and t...

Embodiment 2

[0034] A concrete interface defoamer for plastering gypsum, comprising: styrene-acrylic emulsion 12%, emulsified paraffin wax 7.5%, styrene-butadiene emulsion 13%, film-forming aid (octyl dodecyl myristate) by weight percentage 0.1%, fungicide 0.1%, concentration of 20% hyperbranched polyester amine solution 5%, PMMA nanofiber 2.5%, sizing agent 0.1%, nanoparticle (polylactic acid nanoparticle) 4%, polymer dispersant 0.08% , the balance of the PVA solution with a concentration of 5%. Hyperbranched polyester amine has many active terminal branches, which can be used as a medium to connect various components as a whole, thereby synergistically synergizing. The addition of PMMA nanofibers can be used to improve the bond strength of the defoamer after film formation. The sizing agent is used to infiltrate and activate the surface of PMMA nanofibers to improve the degree of integration with other components. The polymer dispersant improves the dispersion of nanoparticles through ...

Embodiment 3

[0043] A concrete interface defoamer for plastering gypsum, comprising: 15% styrene-acrylic emulsion, 10% emulsified paraffin, 15% styrene-butadiene emulsion, film-forming aid (octyl dodecyl myristate) by weight percentage 0.15%, bactericide 0.2%, concentration of 20% hyperbranched polyester amine solution 6%, PMMA nanofiber 3%, sizing agent 0.15%, nanoparticle (polylactic acid nanoparticle) 5%, polymer dispersant 0.1% , the balance of the PVA solution with a concentration of 5%. Hyperbranched polyester amine has many active terminal branches, which can be used as a medium to connect various components as a whole, thereby synergistically synergizing. The addition of PMMA nanofibers can be used to improve the bond strength of the defoamer after film formation. The sizing agent is used to infiltrate and activate the surface of PMMA nanofibers to improve the degree of integration with other components. The polymer dispersant improves the dispersion of nanoparticles through the ...

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Abstract

The invention discloses a concrete interface defoaming agent for gypsum plaster and a preparation method of the concrete interface defoaming agent. The concrete interface defoaming agent comprises thefollowing components in percentages by weight: 10-15% of styrene-acrylic emulsion, 5-10% of emulsified paraffin, 10-15% of styrene-butadiene emulsion, 0.05-0.15% of a film-forming assistant, 0.05-0.2% of bactericide, 4-6% of a hyperbranched polyesteramine solution with concentration of 20%, 2-3% of PMMA nanofibers, 0.05-0.15% of an impregnating compound, 3-5% of nanoparticles, 0.05-0.1% of a high-molecular dispersant and the balance of a PVA solution with concentration of 5%. By using the defoaming agent prepared by the invention as a preliminary step of plastering construction, the number ofbubbles can be obviously reduced, the engineering quality is improved, the rework procedures are reduced, and the engineering cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a concrete interface defoamer for plastering gypsum and a preparation method thereof. Background technique [0002] Plastering gypsum, as a widely used and unique interior wall decoration and leveling material, not only has the characteristics of light weight, fire prevention, heat insulation, green environmental protection, etc., but also has a breathing function, which can adjust the humidity and improve the living environment. In recent years, the application research of plastering gypsum has been advancing continuously and rapidly, and a series of products such as plastering gypsum for surface layer, bottom layer, light weight, and thermal insulation layer have been developed. At present, the market share is continuously expanding, and the development space and potential are huge. [0003] The foaming phenomenon of plastering gypsum in the construction process is...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D109/08C09D7/63C09D7/65D06M15/333D06M15/564D06M101/24
Inventor 张津践朱蓬莱丁薇薇杨锐周润翔顾梁超张广宇
Owner HANGZHOU LAIBAODE NEW MATERIAL TECH CO LTD
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