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Building 3D printing ink and use thereof

A 3D printing and ink technology, applied in the direction of additive processing, etc., can solve the problems of not being able to use 3D printing materials, use, and performance effects, etc., to achieve good toughness and fluidity, high initial setting strength, and short initial setting time Effect

Inactive Publication Date: 2017-05-24
马义军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The glass fibers used in the above three patented technologies are used to reinforce building materials. The ratio of glass fibers to other components in the three patented technologies cannot be used for 3D printing materials. Printing can be formed, so the printing material should have good fluidity, but if the fluidity is too good, it cannot meet the vertical accumulation performance during the 3D printing process, so it cannot be used as a 3D printing material; and the accumulation of the upper layer of material during the printing process It will form pressure on the underlying material. If the underlying material does not form sufficient strength in a short period of time, it will deform under the pressure. Therefore, the printing material should also have a faster initial setting time and a higher initial setting strength.
Therefore, only adding glass fiber to building materials in the above technology cannot achieve the performance effect required for printing

Method used

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  • Building 3D printing ink and use thereof
  • Building 3D printing ink and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of architectural 3D printing ink, send 100kg of cement and 100kg of river sand into a dry powder mixer for mixing, and the average volume of river sand is 3.4×10 -2 cm 3 , the average diameter is 6mm, the speed of the mixer is between 1000-2000r / m, the time is 30-60s, and the stirring temperature is normal temperature; take a single glass fiber with an average diameter of 0.1mm and 4kg of glass fiber, and cut the glass fiber to a length of 10- 30mm, of which 15-25mm accounts for 60%. Add the cut glass fiber to the above mixture for stirring. The mixture was sent into a mixing mixer, 50 kg of water was added, mixed and stirred evenly, and the architectural 3D printing ink of the present invention was obtained. The slump ratio index K of the 3D printing ink in Example 1 was 30%.

Embodiment 2

[0039] Present embodiment 2 does not contain small solid particle, with cement 200kg; Get single glass fiber average diameter and be 0.5mm glass fiber 5kg, glass fiber cutting length is 10-20mm and length is 20-30mm, wherein length is 10- The mass ratio of 20mm to 20-30mm single fiber is 1:1.5, the cut glass fiber is mixed with the above cement and stirred, the speed of the mixer is between 2000-2500r / s, the time is 60s, and the stirring temperature is normal temperature; Then the above-mentioned dry mixture was sent into a mixing mixer, 60kg of water was added, mixed and stirred evenly to obtain the architectural 3D printing ink of the present invention, and the slump ratio index K of the 3D printing ink in Example 2 was 35%.

Embodiment 3

[0041]Send 100kg of yellow mud and 250kg of slag into the dry powder mixer for mixing, and the average volume of slag is 0.27cm 3 , the average diameter of the slag is 8mm, the mixer speed is between 2000-2200r / s, the time is 30-45s, and the stirring temperature is normal temperature; the average diameter is 10kg of polyparaphenylene benzobisoxazole fibers of 2mm, and the poly The p-phenylene benzobisoxazole fibers are cut with a length of 10-20mm and a length of 20-30mm, wherein the mass ratio of fibers with a length of 10-20mm to 20-30mm is 1:1, and the cut polyparaphenylene The benzobisoxazole fiber is added to the above mixture and stirred, the speed of the mixer is between 2000-2500r / s, the time is 30-60s, and the stirring temperature is normal temperature; then the above-mentioned dry mixture is sent into the mixing mixer, and water is added 60kg, mixed and stirred evenly to obtain the architectural 3D printing ink of the present invention, the slump ratio index K of the...

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Abstract

The invention provides a building 3D printing ink; the building 3D printing ink contains a fiber, a coagulating agent and solid small particles, the weight of the fiber accounts for 1 wt%-6 wt% of the total weight of the ink, the weight ratio of the coagulating agent to the solid small particles is (1-6) to (0-6), the slump ratio K of the 3D printing ink is in a range of 20%<=K<=50%, and the average volume of the solid small particles is 1*10<-3>-0.9 cm<3>. The 3D printing ink is used for 3D printing of buildings, and enhances the bending strength, the compressive strength, the tensile strength and / or the impact strength of the buildings.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a building 3D printing ink and its application. Background technique [0002] The rapid rise of 3D printing buildings at home and abroad is based on computer-controlled 3D printing equipment and buildings constructed by printing laminated materials. At present, the materials used in 3D printing buildings are still immature. Shanghai, my country uses building waste materials, which are crushed and ground, and cement, fiber, organic adhesives, etc. are added to make toothpaste-like "ink" for printing. . Dutch experts used resin and plastic materials; Americans used resin mortar, clay, and concrete materials for 3D printing building tests. [0003] CN1755043A discloses a light-weight composite wallboard for plants, which is chemically compounded by the following two different magnesia cements, a. Lightly burned powder with a weight ratio of 40-60%, halogen powder with ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/14C04B28/10B33Y70/00
CPCC04B28/00B33Y70/00C04B28/001C04B28/10C04B28/14C04B2201/50C04B14/068C04B14/42C04B22/002C04B18/141C04B16/0675
Inventor 马义军
Owner 马义军
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