Viscosity modifying agent suitable for a 3D printing sulphoaluminate cement-based material

Abstract

The invention relates to a viscosity modifying agent suitable for a 3D printing sulphoaluminate cement-based material, and belongs to the technical field of cement viscosity modifying agents. The viscosity modifying agent is prepared from the following components in parts by weight: 5-10 parts of polyethylene glycol, 20-40 parts of oxidized graphene, 10-20 parts of glycerine, 10-20 parts of waterreducing agents, 5-20 parts of starch, and 5-10 parts of quartz powder. The viscosity modifying agent can control the plastic viscosity of the 3D printing cement-based material within the range of 2.4-3.5 Pa.s, and the thixotropic property of the 3D printing sulphoaluminate cement-based material is greatly improved, and the stable control of a 3D printing structure is realized. In addition, the viscosity modifying agent can effectively regulate and control the rheological property of slurry and prolong the coagulation time so as to regulate the 3D printing time and improve the operability of the 3D printing cement-based material.

Description

Technical field [0001] The invention belongs to the technical field of cement viscosity modifiers, and particularly relates to a viscosity modifier suitable for 3D printing sulfoaluminate cement-based materials. Background technique [0002] 3D printing technology has become a novel and green forming method in the field of building materials. The print model is designed based on computer software, while the cement material is printed from a 3D printer in accordance with the established model by layer by layer. 3D printing building materials can significantly shorten construction time, greatly reduce costs, and do not require a large number of workers to build, which can improve production efficiency. In addition, it is very easy to print complex curved buildings, which are difficult to construct in other ways. However, due to the difficulty of adjusting the setting time and rheological properties of 3D printing cement-based materials, and the low early strength, the development ...

AI Technical Summary

Problems solved by technology

However, most of the current 3D printing cement-based materials mainly use a single viscosity modifier to control their rheological properties, such as commonly used cellulose ethers, but cannot comprehensively consider and control the relationship between coagulation, printing time and rheological properties. change relationship, while its lost strength cannot be replaced

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