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A kind of 3D printing white cement-based material and its use method and application

A white cement, 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of thixotropy, rheological setting time can not be reached, printing time cannot be stably controlled, 3D printing structure is easy to collapse, etc., to inhibit the later collapse phenomenon, improve rheology and thixotropy, and achieve the effect of stable regulation

Active Publication Date: 2021-07-23
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] White cement-based material is a kind of characteristic cement mainly used in the decoration field. It is often used to prepare terrazzo, sculpture, special-shaped components, decorative plates, decorative mortar, decorative concrete, etc., such as white Portland cement and white sulphoaluminate cement. However, in the inventor's long-term scientific research practice, it was found that the thixotropy, rheology, and setting time of traditional white cement-based materials could not meet the requirements of 3D printing technology, and the whiteness was not easy to control, and the printing time could not be stably adjusted and established. 3D printed structures are prone to collapse

Method used

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  • A kind of 3D printing white cement-based material and its use method and application
  • A kind of 3D printing white cement-based material and its use method and application

Examples

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Effect test

Embodiment 1

[0041]A preparation of 3D printing white cement-based material, including the following components in parts by weight: 650 parts of basic oxides, 440 parts of phosphate components, 110 parts of retarders, 15 parts of fibers, 12 parts of desulfurized gypsum, 10 parts of titanium dioxide, 18 parts of limestone powder, 17 parts of emulsion, 330 parts of water.

[0042] The basic oxide is magnesium oxide obtained by calcining magnesite at 1700°C. The phosphate component is ammonium dihydrogen phosphate; the retarder is borax; the fiber is polypropylene fiber, and the emulsion is a mixture of styrene-acrylic emulsion and polyvinyl acetate emulsion, and the styrene-acrylic emulsion and polyvinyl acetate emulsion The mixing mass ratio of vinyl acetate emulsion is 2.1:1 in sequence.

Embodiment 2

[0044] A preparation of 3D printing white cement-based material, including the following components in parts by weight: 680 parts of basic oxides, 450 parts of phosphate components, 80 parts of retarders, 22 parts of fibers, 13 parts of desulfurized gypsum, 13 parts of titanium dioxide, 25 parts of limestone powder, 23 parts of emulsion, 380 parts of water.

[0045] The basic oxide is magnesium oxide obtained by calcining magnesite at 1700°C. The phosphate component is potassium dihydrogen phosphate; the retarder is boric acid; the fiber is polypropylene fiber, and the emulsion is a mixture of styrene-acrylic emulsion and polyvinyl acetate emulsion, and the styrene-acrylic emulsion and polyvinyl acetate emulsion The mixing mass ratio of vinyl acetate emulsion is 2.4:1 in sequence.

Embodiment 3

[0047] A preparation of 3D printing white cement-based material, including the following components in parts by weight: 690 parts of basic oxides, 410 parts of phosphate components, 100 parts of retarders, 12 parts of fibers, 20 parts of desulfurized gypsum, 10 parts of titanium dioxide, 16 parts of limestone powder, 25 parts of emulsion, 370 parts of water.

[0048] The basic oxide is magnesium oxide obtained by calcining magnesite at 1700°C. The phosphate component is potassium dihydrogen phosphate; the retarder is boric acid; the fiber is polyethylene fiber, and the emulsion is a mixture of styrene-acrylic emulsion and polyvinyl acetate emulsion, and styrene-acrylic emulsion and polyvinyl acetate emulsion The mixing mass ratio of vinyl acetate emulsion is 2.7:1 in sequence.

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Abstract

The invention belongs to the technical field of building materials, and in particular relates to a 3D printing white cement-based material, which comprises, in parts by weight: 640-740 parts of basic oxide, 400-470 parts of phosphate, 60-120 parts of retarder and A modifier, the modifier includes a solid component and a liquid component, and the liquid component is stored separately from the solid component in the basic oxide, phosphate, retarder and modifier, wherein: The liquid component includes: 10-30 parts of emulsion; the solid component includes: 10-25 parts of fiber, 5-25 parts of gypsum, 5-17 parts of titanium dioxide, and 10-30 parts of limestone powder. The present invention uses phosphate and alkaline oxide as the main components, and by adding components such as fibers and modifiers, the rheology and thixotropy of the 3D printing white cement-based material are greatly improved, and the printable time is realized. Stable regulation and stable control of 3D printed structures.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a white cement-based material suitable for 3D printing and its use method and application. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] 3D printing technology is also called additive manufacturing technology. As a green and efficient new technology, with the development of computer technology, material technology, machinery manufacturing and other technologies, it has been widely used in many fields. The construction industry has always been an industry with high emissions, high energy consumption, high pollution, and serious labor costs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34B33Y70/10B33Y10/00
CPCB33Y70/00C04B28/344C04B2111/00181C04B2201/10C04B2201/50C04B22/066C04B22/0013C04B16/0633C04B22/145C04B14/305C04B14/28C04B24/2676C04B24/2623C04B16/0625
Inventor 芦令超徐嘉宾陈明旭赵丕琪王守德宫晨琛
Owner UNIV OF JINAN
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