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Multi-functional gypsum-based mortar and preparation method thereof

A gypsum-based mortar technology, applied in the field of gypsum-based mortar, to achieve the effect of improving durability, formaldehyde purification rate and durability

Inactive Publication Date: 2019-11-08
BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] On the one hand, mainly based on solving the problem of effectively absorbing formaldehyde and purifying air, the present invention provides a gypsum-based mortar, which mainly includes the following components in parts by weight: 30-40 parts of gypsum, 30-40 parts of diatomaceous earth, nano-titanium dioxide 0.5-3.0 parts, fine aggregate 30-40 parts

Method used

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  • Multi-functional gypsum-based mortar and preparation method thereof
  • Multi-functional gypsum-based mortar and preparation method thereof
  • Multi-functional gypsum-based mortar and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0057] A gypsum-based mortar consisting of the following components by weight:

[0058] Desulfurization hemihydrate gypsum: 31.015 parts;

[0059] Non-calcined diatomite: 32 parts;

[0060] Natural sand: 30 parts;

[0061] Negative ion powder: 4.5 parts;

[0062] Nano titanium dioxide: 1.5 parts;

[0063] High-efficiency polycarboxylate superplasticizer: 0.12 parts;

[0064] Redispersible latex powder: 0.1 part;

[0065] Gypsum retarder: 0.035 parts;

[0066] Low viscosity cellulose ether: 0.08 parts;

[0067] Polyether defoamer: 0.15 parts;

[0068] Inorganic pigment: 0.5 parts.

[0069] It can be prepared by uniformly mixing the above raw materials in proportion.

[0070] After adding 70% water by weight to the gypsum-based mortar, its properties are shown in Table 1.

[0071] Table 1 Physical and mechanical properties of gypsum-based mortar

[0072]

Embodiment 2

[0074] A gypsum-based mortar consisting of the following components by weight:

[0075] Desulfurization hemihydrate gypsum: 33.823 parts;

[0076] Non-calcined diatomite: 30 parts;

[0077] Natural sand: 30 parts;

[0078] Negative ion powder: 4.0 parts;

[0079] Nano titanium dioxide: 1.2 parts;

[0080] High-efficiency polycarboxylate superplasticizer: 0.11 parts;

[0081] Redispersible latex powder: 0.12 parts;

[0082] Gypsum retarder: 0.037 parts;

[0083] Low viscosity cellulose ether: 0.09 parts;

[0084] Polyether defoamer: 0.15 parts;

[0085] Inorganic pigment: 0.5 parts.

[0086] It can be prepared by uniformly mixing the above raw materials in proportion.

[0087] After adding 67% water by weight to the gypsum-based mortar, its properties are shown in Table 2.

[0088] Table 2 Physical and mechanical properties of gypsum-based mortar

[0089]

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Abstract

The invention relates to multifunctional gypsum-based mortar and a preparation method thereof. The gypsum-based mortar provided by the invention comprises the following components by weight: 30-40 parts of gypsum, 30-40 parts of diatomite, 0.5-3.0 parts of nanometer titanium dioxide, and 30-40 parts of fine aggregate. The gypsum-based mortar of the invention can not only improve the formaldehyde adsorption performance of the gypsum-based mortar in virtue of the hydration structure of a gypsum-based gelling material and the structure of diatomite, but also decompose the formaldehyde adsorbed bya porous structure, thereby maintaining long-lasting and long-acting adsorption performance.

Description

technical field [0001] The invention relates to a gypsum-based mortar, in particular to a gypsum-based mortar capable of absorbing formaldehyde and purifying air. The invention also provides a preparation method of the gypsum-based mortar. Background technique [0002] At present, various new building decoration materials are becoming more and more numerous. In interior decoration, various artificial boards, adhesives, coatings, etc. are used more and more widely. With the improvement of the degree of interior decoration, indoor environmental pollution is gradually intensified. At the same time, people pay more and more attention to the living environment, which symbolizes the quality of life, and it has become increasingly difficult to tolerate indoor gas pollutants, especially formaldehyde. In recent years, air pollution caused by formaldehyde has attracted more and more attention. Decorative coatings, paints, and adhesives in artificial decorative panels used in living ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/144C04B2111/00017C04B2111/00025C04B2201/50C04B14/08C04B14/06C04B14/305C04B22/126C04B22/04C04B24/24C04B24/383C04B2103/302C04B2103/22C04B2103/50C04B2103/54
Inventor 黄天勇王肇嘉张文才李寅明章银祥陈旭峰
Owner BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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