Hydraulic composition

• Main Author: KONISHI HIDEKAZU
• Format: Patent
• Language: Chinese; English
• Published: 17.10.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention relates to a hydraulic composition. In a hydraulic composition for additive manufacturing, the hydraulic composition comprises (A) at least one water-soluble hydroxyalkyl alkyl cellulose selected from the group consisting of hydroxypropyl methyl cellulose and hydroxyethyl methyl cellulose, (B) a defoaming agent, (C) cement, (D) water, and (E) divotan gum, the water-soluble hydroxyalkyl alkyl cellulose has a degree of substitution of alkyl groups of 1.6 to 2.0 and a 2 wt% aqueous solution viscosity of 50 to 1000 mPa.s at 20 DEG C, and water is added in an amount of 25 to 70 parts by weight per 100 parts by weight of cement. The composition has good extrudability from a nozzle and has good self-support after deposition. 本发明涉及水硬性组合物。在用于增材制造的水硬性组合物中，其包括(A)至少一种选自以下的可溶于水的羟烷基烷基纤维素：羟丙基甲基纤维素和羟乙基甲基纤维素，(B)消泡剂，(C)水泥，(D)水和(E)迪优坦胶，可溶于水的羟烷基烷基纤维素具有烷基基团取代度为1.6至2.0和20℃下2重量％水溶液粘度为50至1000mPa·s，并且以25至70重量份/100重量份水泥的量添加水。所述组合物具有良好的从喷嘴可挤出性并具有沉积之后的良好自支持性。