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Preparation method of low-brittleness 3D (Three-dimensional) printing mortar

A 3D printing, low brittle technology, applied in the field of 3D printing, can solve the problems of poor heat preservation effect and high brittleness, achieve good heat preservation effect, small thermal conductivity, and avoid uneven distribution

Inactive Publication Date: 2018-06-19
WUHU LINYI ELECTRONICS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 3D printing construction technology can produce complex and diverse buildings that are difficult to build in traditional ways, and does not require the use of templates, which reduces construction costs. The construction methods of formwork, extrusion and overlay molding put forward higher requirements on the performance of building materials. Traditional cement concrete mortar has the disadvantages of poor thermal insulation effect and high brittleness, which are not suitable for 3D printing building materials, which need to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method for low brittle 3D printing mortar, comprising the steps of:

[0021] S1, 40kg magnesium phosphate cement, 35kg Portland cement, 1kg montmorillonite, 24kg medical stone powder, 20kg talcum powder, 25kg coconut fiber are mixed evenly to obtain a premix;

[0022] S2. Stir 1kg of carrageenan, 6kg of sodium alginate, and 40kg of water for 8min at a stirring speed of 600r / min, microwave for 100s, and microwave power of 500W, add them to 160kg of liquid paraffin, stir in an ice-water bath for 10min, and stir at a speed of 25r / min, add 15kg concentration and be 1.4mol / L sodium hydroxide solution and stir, cool, filter, obtain composite microsphere;

[0023] S3. Stir 1kg of composite microspheres, 1.5kg of air-entraining agent, 1.2kg of water reducer, 4kg of polyvinyl alcohol, 5kg of sepiolite powder, and 50kg of water evenly, add 80kg of premix and stir evenly, and obtain a low-brittle 3D printing mortar.

Embodiment 2

[0025] A preparation method for low brittle 3D printing mortar, comprising the steps of:

[0026] S1, 50kg magnesium phosphate cement, 25kg Portland cement, 6kg montmorillonite, 15kg medical stone powder, 32kg talcum powder, 18kg coconut fiber are mixed evenly to obtain a premix;

[0027] S2. Stir 5kg of carrageenan, 1kg of sodium alginate, and 60kg of water for 4min at a stirring speed of 800r / min, microwave for 50s, and microwave power of 600W, add them to 120kg of liquid paraffin, stir in an ice-water bath for 18min, and stir at a speed of 15r / min, add 24kg concentration and be 0.8mol / L sodium hydroxide solution and stir, cool, filter, obtain composite microsphere;

[0028] S3. Stir 3kg of composite microspheres, 0.4kg of air-entraining agent, 2kg of water reducer, 2kg of polyvinyl alcohol, 12kg of sepiolite powder, and 40kg of water, and add 140kg of premix and stir evenly to obtain a low-brittle 3D printing mortar.

Embodiment 3

[0030] A preparation method for low brittle 3D printing mortar, comprising the steps of:

[0031] S1, 43kg magnesium phosphate cement, 32kg Portland cement, 2kg montmorillonite, 22kg medical stone powder, 26kg talcum powder, 24kg coconut fiber are mixed evenly to obtain a premix;

[0032] S2. Stir 2kg of carrageenan, 4kg of sodium alginate, and 45kg of water for 7min at a stirring speed of 650r / min, microwave for 80s at a microwave power of 520W, add them to 150kg of liquid paraffin, stir in an ice-water bath for 12min at a stirring speed of 28r / min, add 18kg concentration and be 1.2mol / L sodium hydroxide solution and stir, cool, filter, obtain composite microsphere;

[0033] S3. Stir 1.5kg of composite microspheres, 1.2kg of air-entraining agent, 1.4kg of water reducer, 3.5kg of polyvinyl alcohol, 8kg of sepiolite powder, and 47kg of water evenly, add 90kg of premix and stir evenly, and obtain low-brittle 3D printing mortar.

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Abstract

The invention discloses a preparation method of low-brittleness 3D (Three-dimensional) printing mortar. The preparation method comprises the following steps: evenly mixing magnesium phosphate cement,portland cement, montmorillonoid, medical stone powder, talcum powder and cocoanut fibers to obtain premix; stirring carrageenan, sodium alginate and water, carrying out microwave processing, adding into liquid paraffin, stirring in an ice-water bath, adding a sodium hydroxide solution to be evenly stirred, cooling, and filtering to obtain a composite microsphere; evenly stirring the composite microsphere, an air entraining agent, a water reducer, polyvinyl alcohol, sepiolite powder and water, and adding the premix to be evenly stirred to obtain the low-brittleness 3D printing mortar. According to the preparation method, which is put forward by the invention, for the low-brittleness 3D printing mortar, the obtained mortar has the advantages of good water tolerance, small heat conduction coefficient, good thermal insulation effect, high strength and lowered brittleness.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a method for preparing low-brittle 3D printing mortar. Background technique [0002] 3D printing construction technology can produce complex and diverse buildings that are difficult to build in traditional ways, and does not require the use of templates, which reduces construction costs. The construction methods of formwork, extrusion and overlay molding put forward higher requirements on the performance of building materials. Traditional cement concrete mortar has the disadvantages of poor thermal insulation effect and high brittleness, which are not suitable for 3D printing building materials, which need to be solved urgently . Contents of the invention [0003] Based on the technical problems in the background technology, the present invention proposes a method for preparing low-brittle 3D printing mortar. The resulting mortar has good water resistance, low thermal cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34B33Y70/00
CPCB33Y70/00C04B28/344C04B2111/00181C04B2201/10C04B2201/32C04B7/02C04B14/104C04B14/04C04B18/265C04B24/38C04B24/36C04B2103/302C04B2103/304C04B24/2623C04B14/042
Inventor 吕月林
Owner WUHU LINYI ELECTRONICS SCI & TECH
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