Ceramic slurry material for photocuring 3D printing and preparation method of material
A ceramic slurry and 3D printing technology, which is applied in the field of additive manufacturing, can solve the problems of not being able to store for a long time, low solid content, and large particle size, and achieve uniformity, high solid content, and small particle size. Effect
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[0030] Please refer to figure 1 , a method for preparing a ceramic slurry for photocuring 3D printing according to a preferred embodiment of the present invention mainly includes the following steps:
[0031] (1) Dissolve acrylamide and N,N'-methylenebisacrylamide in deionized water so that the mass ratio of the total mass of acrylamide and N,N'-methylenebisacrylamide to water is 1: 3~1:6, stirring to dissolve acrylamide and N,N'-methylenebisacrylamide in water.
[0032] The mass ratio of acrylamide to N,N'-methylenebisacrylamide is 32:1-40:1.
[0033] (2) Weigh 0.1%-2.0% leveling agent and 0.1%-2.0% defoamer according to the total mass of the solution in the above step (1), and then dissolve them in the solution of step (1).
[0034] The leveling agent is one or more of sodium carboxymethylcellulose, polyacrylic acid, Rad2100, Rad2500, Glide450; the defoamer is one or more of Foamex N, Foamex 815N, Airex 910, Airex 931 kind.
[0035] (3) Weighing the submicron-sized ceram...
Embodiment 1
[0044] Preparation of high solid content and low viscosity ceramic slurry for photocuring 3D printing:
[0045] (1) Dissolve acrylamide and N,N'-methylenebisacrylamide with a mass ratio of 35:1 and 0.5% ammonium citrate of ceramic powder into deionized water, and add 0.6% of the mass of the solution Leveling agent, 0.6% defoamer to 150mL;
[0046] (2) adding zirconia powder with an average particle size of 0.3um in batches to the above solution and ball milling;
[0047] (3) Add 0.2% ammonium citrate of ceramic powder mass to the above slurry and use ammonia water to adjust pH=8 and continue ball milling for 2 hours;
[0048] (4) Add 0.45g photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide and ball mill for 8h;
[0049] (5) Defoaming the slurry obtained above for 2 hours to obtain a photocurable slurry with a solid phase content of 50 vol%.
[0050] After testing, the viscosity of the light-cured zirconia slurry obtained after defoaming was 500 cP, and no sedimen...
Embodiment 2
[0052] Preparation of high solid content and low viscosity ceramic slurry for photocuring 3D printing:
[0053] (1) Dissolve acrylamide and N,N'-methylenebisacrylamide with a mass ratio of 37:1 and 0.4% ammonium citrate of ceramic powder into deionized water, and add 0.5% of the mass of the solution Leveling agent, 0.6% defoamer to 75mL;
[0054] (2) Adding alumina powder with an average particle diameter of 0.3um in batches to the above solution and ball milling;
[0055] (3) Add 0.4% ammonium citrate of ceramic powder mass to the above slurry and use ammonia water to adjust pH=9 and continue ball milling for 3 hours;
[0056] (4) Add 0.225g photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide and ball mill for 8h;
[0057] (5) Vacuum defoaming the above obtained slurry for 2 hours to obtain a photocurable slurry with a solid phase content of 52vol%;
[0058] After testing, the viscosity of the light-cured alumina slurry obtained after defoaming was 2000 cp, and n...
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