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A platform for research: civil engineering, architecture and urbanism
Cement-based material for realizing underwater 3D printing through in-situ graft polymerization and preparation method of cement-based material
The invention provides a cement-based material for realizing underwater 3D printing through in-situ graft polymerization and a preparation method. The material comprises Portland cement, water, gravel aggregate, an organic matter monomer, an initiator, a cross-linking agent, an accelerant and a polysaccharide grafting component. The organic matter monomer has a water reducing effect and can ensure that the mortar has good working performance, and meanwhile, the polysaccharide grafting component has good underwater dispersion resistance, so that a printing strip is not dispersed within a short time after the printing material is extruded underwater, and certain shape stability is kept at the same time. After graft polymerization is quickly carried out after proper opening time, a polymer generated by in-situ polymerization provides certain strength for the printing strip, so that the printing strip has good shape stability and underwater scouring resistance, and meanwhile, after cement is hardened, the printing strip is interwoven with a hydration product to form an interpenetrating structure, so that the printing strip has good water resistance. The shrinkage and mechanical properties, including compressive strength, flexural strength and the like, of 3D printing slurry are improved, and underwater rapid high-performance 3D printing construction is achieved.
本发明提供了一种原位接枝聚合实现水下3D打印水泥基材料及制备方法。所述材料包括为硅酸盐水泥、水、砂石骨料、有机物单体、引发剂、交联剂、促进剂和多糖类接枝组分。有机物单体具有减水作用，能够保证砂浆具有良好的工作性能，同时多糖类接枝组分具有良好的水下抗分散性能，保证打印材料在水下挤出后短时间内打印条不分散，同时保持一定的形状稳定性。经过合适的开放时间后快速发生接枝聚合后，原位聚合产生的聚合物提供打印条一定的强度，使得打印条具有良好的形状稳定性和抗水下冲刷性能，同时在水泥硬化后与水化产物交织形成穿插结构，使得3D打印的浆体的收缩和力学性能得到提高，包括抗压抗折强度等，实现水下快速高性能3D打印建造。
Cement-based material for realizing underwater 3D printing through in-situ graft polymerization and preparation method of cement-based material
The invention provides a cement-based material for realizing underwater 3D printing through in-situ graft polymerization and a preparation method. The material comprises Portland cement, water, gravel aggregate, an organic matter monomer, an initiator, a cross-linking agent, an accelerant and a polysaccharide grafting component. The organic matter monomer has a water reducing effect and can ensure that the mortar has good working performance, and meanwhile, the polysaccharide grafting component has good underwater dispersion resistance, so that a printing strip is not dispersed within a short time after the printing material is extruded underwater, and certain shape stability is kept at the same time. After graft polymerization is quickly carried out after proper opening time, a polymer generated by in-situ polymerization provides certain strength for the printing strip, so that the printing strip has good shape stability and underwater scouring resistance, and meanwhile, after cement is hardened, the printing strip is interwoven with a hydration product to form an interpenetrating structure, so that the printing strip has good water resistance. The shrinkage and mechanical properties, including compressive strength, flexural strength and the like, of 3D printing slurry are improved, and underwater rapid high-performance 3D printing construction is achieved.
本发明提供了一种原位接枝聚合实现水下3D打印水泥基材料及制备方法。所述材料包括为硅酸盐水泥、水、砂石骨料、有机物单体、引发剂、交联剂、促进剂和多糖类接枝组分。有机物单体具有减水作用，能够保证砂浆具有良好的工作性能，同时多糖类接枝组分具有良好的水下抗分散性能，保证打印材料在水下挤出后短时间内打印条不分散，同时保持一定的形状稳定性。经过合适的开放时间后快速发生接枝聚合后，原位聚合产生的聚合物提供打印条一定的强度，使得打印条具有良好的形状稳定性和抗水下冲刷性能，同时在水泥硬化后与水化产物交织形成穿插结构，使得3D打印的浆体的收缩和力学性能得到提高，包括抗压抗折强度等，实现水下快速高性能3D打印建造。
Cement-based material for realizing underwater 3D printing through in-situ graft polymerization and preparation method of cement-based material
一种原位接枝聚合实现水下3D打印水泥基材料及制备方法
FENG PAN (author) / SHAO LIJING (author) / LIU QI (author) / LIU MINGXING (author) / CHEN CHEN (author)
2024-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
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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