3D printing mortar and preparation method thereof

A 3D printing and mortar technology, applied in the field of building materials, can solve the problems of 3D printing equipment with few types of 3D printing molding materials, unsuitable for rapid printing and molding, and environmental human injury, etc., to achieve excellent work performance, good plasticity, and high strength in the later stage Effect

Inactive Publication Date: 2016-10-12
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the main problem of the current existing technology is that there are few types of 3D printing equipment technology and 3D printing molding materials, mainly organic materials, which are prone to oxidation-reduction reactions during the high-temperature melting printing process, producing toxic gases, which are harmful to the environment and human body. cause some da

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]A preparation method for 3D printing mortar, compound cement 90%, quartz sand 7%, quicklime 1.5%, anhydrous lithium chloride coagulant 1.0%, melamine superplasticizer 0.2%, silicon polyether cement mortar 0.1% powdery defoamer, 0.1% cellulose ether thickener, 0.1% polypropylene fiber, compound cement consists of 80% sulfoaluminate cement, 10% aluminate cement, and 10% ordinary Portland cement . The main construction method is to compound the cement according to the corresponding proportion, and then mix it for use. The compound cement, quartz fine sand, lime, water reducer, defoamer, thickener, and fiber are weighed according to the corresponding proportion and mixed to obtain powder for use. When used, the coagulant is first dissolved in water to obtain an aqueous solution. The powder and aqueous solution are installed in different gun chambers, and the speed of discharging material and water is controlled during use, which can effectively coagulate and harden quickly...

Embodiment 2

[0031] A preparation method for 3D printing mortar, compound cement 85%, quartz fine sand 12%, quicklime 1.0%, anhydrous lithium chloride coagulant 1.0%, ultra-dry powder active water reducer 0.2%, silicon polyether Cement mortar powder defoamer 0.2%, polyacrylamide thickener 0.2%, polypropylene fiber 0.4%, compound cement sulfoaluminate cement 70%, aluminate cement 10%, ordinary Portland cement 20% . The main construction method is to compound the cement according to the corresponding proportion, and then mix it for use. Weigh the compound cement, quartz fine sand, lime, water reducer, defoamer, thickener, and fiber according to the corresponding proportions and mix them well for use. When used, the coagulant is first dissolved in water to obtain an aqueous solution. The powder and aqueous solution are installed in different gun chambers, and the speed of discharging material and water is controlled during use, which can effectively coagulate and harden quickly. The initia...

Embodiment 3

[0033] A preparation method for 3D printing mortar, compound cement 86%, quartz sand 10%, quicklime 0.5%, anhydrous sodium sulfate coagulant 2.5%, melamine superplasticizer 0.3%, silicon polyether cement mortar powder 0.2% antifoaming agent, 0.1% cellulose ether thickener, 0.4% polypropylene fiber, 90% compound cement sulfoaluminate cement, 5% aluminate cement, and 5% ordinary Portland cement. The main construction method is to compound the cement according to the corresponding proportion, and then mix it for use. The compound cement, quartz fine sand, lime, water reducer, defoamer, thickener, and fiber are weighed according to the corresponding proportion and mixed to obtain powder for use. When used, the coagulant is first dissolved in water to obtain an aqueous solution. The powder and aqueous solution are installed in different gun chambers, and the speed of discharging material and water is controlled during use, which can effectively coagulate and harden quickly. The i...

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PUM

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Abstract

The invention relates to 3D printing mortar and a preparation method thereof and belongs to the field of building materials. The mortar is mainly composed of 70-90% of compound cement, 5-20% of quartz sand, 0.2-2% of lime, 1-5% of coagulant, 0-3% of water reducing agent, 0-3% of defoaming agent, 0-0.5% of thickener and 0.2-0.8% of fiber. The mortar can be quickly hardened and is good in thixotropy and flowability, initial setting time can be within 2 min at least, the requirement that the 3D printing mortar is quickly dried and hardened can be met, and later strength is high.

Description

technical field [0001] The invention belongs to the field of building materials and provides a preparation method for 3D printing mortar. Background technique [0002] 3D printing technology is a new type of material preparation technology that has received widespread attention and rapid development in the past 30 years. It is based on a digital model, using powdered metal or plastic and other bondable materials, and constructing objects by layer-by-layer printing. Because of its innovation in manufacturing technology, it is considered to be "an important production tool for the third industrial revolution." ". The biggest difference between 3D printing technology and traditional material preparation technology is the integration of unreasonable steps in the preparation method, and the raw materials are formed in a way similar to "stacking", which greatly improves the preparation efficiency and reduces the cost of raw materials. waste. Because of this, since the advent of...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B7/02C04B7/32C04B14/06C04B22/06C04B22/12C04B24/12C04B24/38C04B24/42C04B16/06C04B24/26C04B22/14C04B103/30
CPCC04B28/065C04B2111/00181C04B7/32C04B7/02C04B16/0633C04B14/06C04B22/064C04B22/124C04B24/128C04B24/42C04B24/383C04B24/2652C04B2103/302C04B22/147
Inventor 蹇守卫孙孟琪何桂海马保国郅真真余后梁吴世明
Owner WUHAN UNIV OF TECH
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