Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quick-setting 3D printing cement-based material and application thereof
The invention discloses a quick-setting 3D printing cement-based material and an application thereof, and is characterized in that the quick-setting 3D printing cement-based material comprises the following components in parts by mass: OPC cement, SAC cement, sand, water, a water reducing agent, a volume stabilizer and lithium carbonate; the volume stabilizer comprises a thixotropic agent and a thickening agent, the thixotropic agent is organic bentonite, the thickening agent is polyacrylic latex, and the water reducing agent is a polycarboxylate water reducing agent. The quick-setting 3D printing cement-based material has the following beneficial effects: 1) compared with single OPC cement or SAC cement, the quick-setting 3D printing cement-based material has the setting time and mechanical properties both improved to a certain extent; and the fluidity, the extrudability, the visible formability and the like all meet the standard of 3D printing; 2) compared with the preparation of a 3D printing material by completely adopting SAC cement, the quick-setting 3D printing cement-based material has the advantages that the mixing amount of the SAC cement is less, the economic cost is greatly reduced; and 3) the practicability is good, and the strength loss rate of a printing test piece is less than 15% when the 3D printing test piece prepared according to the formula is compared witha pouring molding test piece with the same mixing ratio.
本发明公开了一种速凝3D打印水泥基材料及应用，其特点是按质量份数计，包括如下成分：OPC水泥、SAC水泥、砂、水、减水剂、体积稳定剂、碳酸锂；体积稳定剂包括触变剂和增稠剂，触变剂为有机膨润土，增稠剂为聚丙烯酸乳胶，减水剂为聚羧酸高效减水剂。本发明的有益效果是：1)在对比单一的OPC水泥或者SAC水泥性能时，凝结时间以及力学性能都有一定的提高；并且流动性、挤出性、可见造性等都符合了3D打印的标准；2)对比于完全采用SAC水泥来制备3D打印材料，本发明SAC水泥的掺量较少，经济成本大大降低；3)实用性好，根据配方制备的3D打印试件与用同样配合比的浇筑成型试件做对比，打印试件的强度损失率小于15％。
Quick-setting 3D printing cement-based material and application thereof
The invention discloses a quick-setting 3D printing cement-based material and an application thereof, and is characterized in that the quick-setting 3D printing cement-based material comprises the following components in parts by mass: OPC cement, SAC cement, sand, water, a water reducing agent, a volume stabilizer and lithium carbonate; the volume stabilizer comprises a thixotropic agent and a thickening agent, the thixotropic agent is organic bentonite, the thickening agent is polyacrylic latex, and the water reducing agent is a polycarboxylate water reducing agent. The quick-setting 3D printing cement-based material has the following beneficial effects: 1) compared with single OPC cement or SAC cement, the quick-setting 3D printing cement-based material has the setting time and mechanical properties both improved to a certain extent; and the fluidity, the extrudability, the visible formability and the like all meet the standard of 3D printing; 2) compared with the preparation of a 3D printing material by completely adopting SAC cement, the quick-setting 3D printing cement-based material has the advantages that the mixing amount of the SAC cement is less, the economic cost is greatly reduced; and 3) the practicability is good, and the strength loss rate of a printing test piece is less than 15% when the 3D printing test piece prepared according to the formula is compared witha pouring molding test piece with the same mixing ratio.
本发明公开了一种速凝3D打印水泥基材料及应用，其特点是按质量份数计，包括如下成分：OPC水泥、SAC水泥、砂、水、减水剂、体积稳定剂、碳酸锂；体积稳定剂包括触变剂和增稠剂，触变剂为有机膨润土，增稠剂为聚丙烯酸乳胶，减水剂为聚羧酸高效减水剂。本发明的有益效果是：1)在对比单一的OPC水泥或者SAC水泥性能时，凝结时间以及力学性能都有一定的提高；并且流动性、挤出性、可见造性等都符合了3D打印的标准；2)对比于完全采用SAC水泥来制备3D打印材料，本发明SAC水泥的掺量较少，经济成本大大降低；3)实用性好，根据配方制备的3D打印试件与用同样配合比的浇筑成型试件做对比，打印试件的强度损失率小于15％。
Quick-setting 3D printing cement-based material and application thereof
一种速凝3D打印水泥基材料及应用
CHEN JIANJUN (Autor:in) / CHEN JIANCHUN (Autor:in) / YE JIAYUAN (Autor:in) / LI GUOHAO (Autor:in) / WANG HONGXIA (Autor:in) / SHI DI (Autor:in)
02.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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