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A 3d printed colorful decorative mortar

A 3D printing and decorative mortar technology, applied in the field of color decorative mortar and its preparation, can solve the problems of long setting time, fluidity, inapplicability, etc., and achieve high early strength, stable development, and excellent thixotropic properties of the paste. Effect

Active Publication Date: 2022-03-11
GUANGDONG FUTE NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a cement-based composite material suitable for building 3D printing, to solve the technical problems that the existing common cement-based materials have a long setting time and are generally fluid, have no thixotropic properties, and are not suitable for 3D printing processes. Simultaneously improve the strength of 3D printed mortar

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Mortar preparation:

[0039] S1. Put 80Kg of white high-alumina cement and 30Kg of high-strength gypsum powder into a mortar mixer and stir to disperse the cementitious material evenly; add 50Kg of water and continue stirring, then add 10Kg of polyacrylate emulsion and mix evenly to obtain cement paste;

[0040] S2. put 10Kg inorganic pigment chrome yellow and 100Kg fine sand and 50Kg coarse sand into another mortar mixer and stir and mix to obtain uniform colored sand;

[0041] S3. Add the colored sand to the cement slurry and continue to stir, then add 5Kg polycarboxylate water reducer, 5Kg wood fiber, 5Kg ettringite expansion agent, 10Kg 3D printing special thixotropic agent (made of sodium carboxymethyl cellulose, Superfine heavy calcium carbonate powder and gelatin are obtained according to the mass ratio of sodium carboxymethyl cellulose: superfine heavy calcium carbonate powder: gelatin is 2:1:1), 5Kg lithium carbonate and 5Kg sodium gluconate are mixed evenly, ...

Embodiment 2

[0043] Mortar preparation:

[0044] S1. Put 100Kg of white high-alumina cement and 50Kg of high-strength gypsum powder into a mortar mixer and stir to disperse the cementitious material evenly; add 70Kg of water and continue stirring, then add 20Kg of polyacrylate emulsion and mix evenly to obtain cement slurry;

[0045] S2. Put 20Kg inorganic pigment iron blue, 150Kg fine sand and 100Kg coarse sand into another mortar mixer and stir to obtain uniform colored sand;

[0046] S3. Add the colored sand into the cement slurry and continue to stir, then add 10Kg polycarboxylate water reducer, 10Kg wood fiber, 10Kg ettringite expansion agent, 20Kg 3D printing special thixotropic agent (made of sodium carboxymethyl cellulose, Superfine heavy calcium carbonate powder and gelatin are obtained according to the mass ratio of sodium carboxymethyl cellulose: superfine heavy calcium carbonate powder: gelatin is 5:1:3), 10Kg lithium hydroxide and 5Kg citric acid, 5Kg four Mix sodium borate e...

Embodiment 3

[0048] Mortar preparation:

[0049] S1. Put 100Kg of white high-alumina cement and 45Kg of high-strength gypsum powder into a mortar mixer and stir to disperse the cementitious material evenly; add 60Kg of water and continue stirring, then add 15Kg of polyacrylate emulsion and mix evenly to obtain cement slurry;

[0050] S2. put 16Kg inorganic pigment cadmium red and 120Kg fine sand and 70Kg coarse sand into another mortar mixer and stir and mix to obtain uniform colored sand;

[0051] S3. Add the colored sand to the cement slurry and continue to stir, then add 6Kg polycarboxylate water reducer, 8Kg wood fiber, 7Kg ettringite expansion agent, 16Kg 3D printing special thixotropic agent (made of sodium carboxymethyl cellulose, Superfine heavy calcium carbonate powder and gelatin are obtained according to the mass ratio of sodium carboxymethyl cellulose: superfine heavy calcium carbonate powder: gelatin (3:1:2), 8Kg sodium sulfate, 3Kg tartaric acid, 3Kg tripolyphosphoric acid T...

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Abstract

The invention discloses a 3D printed colored decorative mortar, comprising: 80-100 parts of white high-alumina cement, 100-150 parts of fine sand, 50-100 parts of coarse sand, 30-50 parts of high-strength gypsum powder, and polyacrylate emulsion 10‑20 parts, 10‑20 parts of inorganic pigment, 5‑10 parts of polycarboxylate water reducer, 5‑10 parts of wood fiber, 5‑10 parts of volume stabilizer, 10‑20 parts of thixotropic agent for 3D printing, early 5-10 parts of strong agent, 5-10 parts of retarder, 50-70 parts of water. The present invention adopts white high-alumina cement, the whiteness is greater than 88, and the 3-day compressive strength is not less than 50.0MPa; the high whiteness is conducive to the freshness of the color of the inorganic pigment, and the setting speed of the white high-alumina cement is faster than that of ordinary Portland cement. Faster and higher early strength. The present invention also adds high-strength gypsum powder to promote faster coagulation of mortar and higher early strength. In addition, additives such as 3D printing special thixotropic agent, early strength agent, and volume stabilizer are added to make the mortar raw material suitable for 3D printing. Printing, the early strength is high, and the later strength development is stable.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a 3D printed colored decorative mortar and a preparation method thereof. Background technique [0002] In January 2012, the National Aeronautics and Space Administration (NASA) funded and cooperated with the University of Southern California in the latest development of the "contour process" 3D printing technology. In January 2013, the Dutch designer planned to use 3D printing technology to build a 3D printed house imitating the Mobius ring. In January 2013, the European Space Agency started to work with the construction company Forster+Partners to develop a project to print a space station on the moon. It is planned to use the ready-made soil and other materials on the moon to make them into building materials through 3D printing technology, and then complete the construction of the space station. In February 2013, the British designer SoftkillDesign is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B24/38B33Y70/10C04B111/82
CPCC04B28/146B33Y70/10C04B40/0039C04B2111/82C04B2111/00181C04B2103/0085C04B2201/50C04B7/32C04B24/2641C04B14/36C04B14/06C04B2103/302C04B18/26C04B22/142C04B24/383C04B22/10C04B24/14C04B24/06C04B14/308C04B22/062C04B22/0013C04B22/147C04B22/16
Inventor 张炜阮家铭李娜黄宁宁欧利平林震
Owner GUANGDONG FUTE NEW MATERIALS TECH CO LTD
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