3D Printing

3D printing technology has developed rapidly and has been widely used in bioengineering, aerospace, artistic creation and other fields.

Hydroxypropyl methylcellulose ether (HPMC) can effectively control the slump of cement mortar. Hydroxypropyl methyl cellulose ether and redispersible polymer powder can effectively reduce the bleeding phenomenon of cement-based materials, and can increase the bonding strength between layers of the printing process. The bond strength between the layers will decrease with the increase of the molding interval. The bond strength before the initial setting of the cement is greater than that after the initial setting. The addition of these three rheological adjustment components will lead to compression resistance. loss of strength. In the case of no bleeding, the slump of cement-based materials mixed with warmer rubber has the best stackability in the range of 70-80mm, and the dosage is 0.35% HPMC with a lower viscosity ,extrusion stacking effect is good.