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Preparation method of 3D printing mortar with high thermal insulation performance

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

Inactive Publication Date: 2018-05-29
WUHU LINYI ELECTRONICS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of 3D printing, the thermal insulation effect of the printing mortar is poor and the brittleness is high, which has become a short board restricting the 3D printing construction technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing 3D printing mortar with high thermal insulation, comprising the steps of:

[0019] S1, 60g magnesium phosphate cement, 25g Portland cement, 2g wollastonite, 40g coal gangue, 30g mica powder, 25g glass fiber are mixed evenly to obtain a premix;

[0020] S2. Stir 2g of composite microspheres, 2g of air-entraining agent, 2g of water reducer, 2g of cellulose ether, 2g of bentonite, and 80g of water evenly, add the premix and stir evenly, and obtain a 3D printing mortar with high thermal insulation;

[0021] Wherein the composite microspheres were prepared by the following process: 4g agarose, 4g sodium carboxymethylcellulose, and 30g water were stirred for 4min at a stirring speed of 1200r / min, microwaved for 4min, and the microwave power was 350W, added to 400g of liquid paraffin, Stir in an ice-water bath for 15 min at a stirring speed of 90 r / min, add 20 g of a 1 mol / L sodium hydroxide solution, stir evenly, cool, and filter to obtain composite mic...

Embodiment 2

[0023] A method for preparing 3D printing mortar with high thermal insulation, comprising the steps of:

[0024] S1, 80g magnesium phosphate cement, 15g Portland cement, 4g wollastonite, 20g coal gangue, 60g mica powder, 15g glass fiber are mixed evenly to obtain a premix;

[0025] S2. Stir 6g of composite microspheres, 1g of air-entraining agent, 4g of water reducer, 1g of cellulose ether, 8g of bentonite, and 50g of water evenly, add the premix and stir evenly, and obtain a 3D printing mortar with high thermal insulation;

[0026] Wherein the composite microspheres were prepared by the following process: 8g agarose, 2g sodium carboxymethylcellulose, and 60g water were stirred for 2min at a stirring speed of 1400r / min, microwaved for 2min, and the microwave power was 420W, and added to 200g of liquid paraffin, Stir in an ice-water bath for 35 min at a stirring speed of 20 r / min, add 50 g of a 0.6 mol / L sodium hydroxide solution, stir evenly, cool, and filter to obtain composi...

Embodiment 3

[0028] A method for preparing 3D printing mortar with high thermal insulation, comprising the steps of:

[0029] S1, 65g magnesium phosphate cement, 22g Portland cement, 2.5g wollastonite, 35g coal gangue, 40g mica powder, 22g glass fiber are mixed evenly to obtain a premix;

[0030] S2. Stir 3g of composite microspheres, 1.8g of air-entraining agent, 2.5g of water reducer, 1.8g of cellulose ether, 4g of bentonite, and 70g of water evenly, add the premix and stir evenly, and obtain a 3D printing mortar with high thermal insulation;

[0031] The composite microspheres were prepared by the following process: 5g agarose, 3.5g sodium carboxymethylcellulose, and 40g water were stirred for 3.5min at a stirring speed of 1250r / min, microwaved for 3.5min, and the microwave power was 380W, and added to 340g of liquid In paraffin, stir in an ice-water bath for 20 min at a stirring speed of 60 r / min, add 30 g of a 0.9 mol / L sodium hydroxide solution, stir evenly, cool, and filter to obtai...

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Abstract

The invention discloses a preparation method of 3D printing mortar with high thermal insulation performance. The method comprises the following steps: uniformly mixing magnesium phosphate cement, Portland cement, wollastonite, coal gangue, mica powder and glass fibers to obtain a premix; uniformly stirring composite microspheres, an air entraining agent, a water reducing agent, cellulose ether, bentonite and water, adding the premix, and uniformly stirring the mixture to obtain the 3D printing mortar with high thermal insulation performance. The composite microspheres are prepared with the process as follows: agarose, sodium carboxymethyl cellulose and water are stirred at the rate of 1200-1400 r / min, microwave processing is performed under the power of 350-420 W, the obtained solution isadded to liquid paraffin, stirring is performed in an ice-water bath at the rate of 20-90 r / min, a sodium hydroxide solution is added, the mixed solution is stirred uniformly, cooled and filtered, andthe composite microspheres are obtained. With adoption of the preparation method of the 3D printing mortar with high thermal insulation performance, the mortar has the advantages of good water resistance, small heat conductivity coefficient, good thermal insulation effect, high strength and reduced brittleness.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a method for preparing a highly heat-retaining 3D printing mortar. Background technique [0002] 3D printing technology is a technology that uses digital model files as the basis to construct objects by layer-by-layer printing. Now 3D printing technology has begun to try to be used in the construction of houses. Compared with traditional construction technology, the advantages of 3D printing construction technology are reflected in: fast speed - more than 10 times faster than traditional construction technology; no need for a large number of construction workers, reducing safety risks during construction, and reducing construction waste, It has the characteristics of low carbon, green and environmental protection. However, in the process of 3D printing, the printing mortar has poor thermal insulation effect and high brittleness, which has become a short board restricting 3D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34B33Y70/00
CPCB33Y70/00C04B28/344C04B2111/00181C04B2201/32C04B7/02C04B14/043C04B14/20C04B14/42C04B18/12C04B22/062C04B24/38C04B24/383C04B24/36C04B2103/302C04B2103/304C04B14/104
Inventor 吕月林
Owner WUHU LINYI ELECTRONICS SCI & TECH
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