Ceramic core slurry for 3D printing as well as preparation method and application of ceramic core slurry
A 3D printing and ceramic core technology, applied in the direction of additive processing, etc., can solve the problems of inability to balance high solid content and good fluidity, unable to meet the requirements of complex structural mechanical properties, ceramic core preparation requirements, high shrinkage rate, etc.
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[0053] The present invention also provides a method for preparing ceramic core slurry for 3D printing described in the above technical solution, comprising the following steps:
[0054] Mixing acrylate monomers, acrylate oligomers, photoinitiators and water-based leveling agents to obtain photosensitive resin materials;
[0055] The photosensitive resin material, silicon dioxide powder, zirconium silicate powder and dispersant are mixed to obtain the ceramic core slurry for 3D printing.
[0056] In the present invention, the types and amounts of substances in the preparation method are consistent with the types and amounts of substances in the ceramic core slurry for 3D printing in the above technical solution, and will not be repeated here.
[0057] The invention mixes acrylate monomers, acrylate oligomers, photoinitiators and water-based leveling agents to obtain photosensitive resin materials.
[0058] In the present invention, there is no special limitation on the mixing ...
Embodiment 1
[0077] 282 mL (284.82 g) of 1,6-hexanediol diacrylate, 70.5 mL (78.114 g) of trimethylolpropane triacrylate, 3.5 g of the photoinitiator trimethylbenzoyl-diphenylphosphine oxide and Mix 1g of water-based leveling agent BYK-333 to obtain photosensitive resin material;
[0078] The photosensitive resin material, D50 of 800g is the silicon dioxide powder of 15.8 μ m (the particle size distribution figure of the silicon dioxide powder used in this embodiment is shown in figure 1 ), 80g of zirconium silicate powder with a mesh number of 325 and 5.5g of dispersant ammonium polyacrylate were mixed under dark conditions, and stirred in a vacuum at 100MPa for 4h to obtain the 3D printing with a solid content of 50vol.% and a viscosity of 280mPa·s. Use ceramic core slurry.
[0079] The obtained ceramic core slurry for 3D printing was left to stand at room temperature for 0.5h, and the ceramic core slurry for 3D printing had no obvious agglomeration and precipitation.
Embodiment 2
[0090] 64mL (64.64g) 1,6-hexanediol diacrylate, 16mL (17.728g) trimethylolpropane triacrylate, 8g photoinitiator trimethylbenzoyl-diphenylphosphine oxide and 0.25g Mix water-based leveling agent BYK-333 to obtain photosensitive resin material;
[0091] The photosensitive resin material, 200g of silica powder with a D50 of 15.8 μm, 30g of zirconium silicate powder with a mesh size of 325 mesh and 1.15g of dispersant ammonium polyacrylate were mixed under dark conditions, and stirred in a vacuum at 100MPa for 4h to obtain The ceramic core slurry for 3D printing with a solid content of 44vol.% and a viscosity of 250mPa·s.
[0092] The obtained ceramic core slurry for 3D printing was left to stand at room temperature for 0.5h, and the ceramic core slurry for 3D printing had no obvious agglomeration and precipitation.
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Abstract
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