Preparation method of modified glass powder, cement-based 3D printing material and preparation method of cement-based 3D printing material
A 3D printing, glass powder technology
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no. 1 example
[0056] 1. A preparation method of modified waste glass powder, comprising the following steps:
[0057] (1) The waste glass is dried and ground to obtain glass powder, and then soaked in hydrochloric acid with a mass fraction of 30% for 2 hours. After soaking, the glass powder is washed with clean water, and then dried at 60° C. for 5 hours to obtain a pre-made glass powder. Handling glass powder.
[0058] (2) The pretreated waste glass powder and calcium carbonate powder in step (1) are mixed according to a weight ratio of 10:1.5, and then stirred for 30 minutes to obtain a solid mixture for use.
[0059] (3) calcining the solid mixture obtained in step (2) at 900° C. for 1 h, and cooling to room temperature after the calcination is completed, and then dispersing the obtained calcined product in absolute ethanol, and adding acrylic acid containing 5% of the mass of the calcined product to anhydrous ethanol. It was added dropwise to the solution to react for 25 minutes, so as...
no. 2 example
[0068] 1. A preparation method of modified waste glass powder, comprising the following steps:
[0069] (1) Dry the waste glass and grind it to obtain glass powder, then soak the glass powder with sulfuric acid with a mass fraction of 30% for 1.5 hours, wash the glass powder with clean water after soaking, and then dry it at 55°C for 6 hours to obtain Pretreated glass frit.
[0070] (2) The pretreated waste glass powder and calcium carbonate powder of step (1) are mixed according to a weight ratio of 10:1, and then stirred for 30 minutes to obtain a solid mixture, which is for later use.
[0071] (3) calcining the solid mixture obtained in step (2) at 850° C. for 1.5 hours, and cooling to room temperature after the calcination is completed, and then dispersing the obtained calcined product in absolute ethanol, and 8% by mass of the calcined product acrylic acid It was added dropwise to the solution to react for 20 min, so as to graft functional groups on the surface of the gl...
no. 3 example
[0080] 1. A preparation method of modified waste glass powder, comprising the following steps:
[0081] (1) Dry and grind the waste glass to obtain glass powder, then soak the glass powder with 35% hydrochloric acid for 1 hour, wash the glass powder with clean water after soaking, and then dry it at 75°C for 4 hours to obtain a pre-made glass powder. Handling glass powder.
[0082] (2) The pretreated waste glass powder and calcium carbonate powder in step (1) are mixed according to a weight ratio of 10:1.5, and then stirred for 35 minutes to obtain a solid mixture, which is for later use.
[0083] (3) calcining the solid mixture obtained in step (2) at 1000° C. for 1 h, and cooling to room temperature after the calcination is completed, and then dispersing the obtained calcined product in absolute ethanol, and adding 10% acrylic acid by mass of the calcined product to It was added dropwise to the solution to react for 35 minutes, so as to graft functional groups on the surfac...
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