3D printing powder material as well as preparation method thereof and 3D printing material
A technology of 3D printing and powder materials, which is applied in the field of printing materials, can solve the problems of brittle and fragile solid products, brittle and brittle solid products, and low bonding strength, and achieve high bonding strength and firmness, and improve bonding Good fastness, strength and flexibility
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[0038] A preparation method for 3D printing powder material, comprising the following steps:
[0039] (1) Warm up 100-200 parts of water to 60-80°C, add 100 parts of sodium montmorillonite and mix well, then add 10-20 parts of quaternary ammonium salt and stir to react, then filter and dry the reacted product , to obtain organic montmorillonite. Wherein, the parts by weight of water can be listed as 100 parts, 120 parts, 150 parts, 180 parts or 200 parts etc.; Wait.
[0040](2) Add 5 to 15 parts of organic montmorillonite prepared in step (1) to 100 to 300 parts of absolute ethanol at a temperature of 50 to 70° C. and stir and mix, then add 100 parts of polyamide resin, and continue to stir and react. The reacted product is then filtered and dried to obtain an organic montmorillonite modified polyamide resin. Wherein, the parts by weight of organic montmorillonite can be listed as 5 parts, 8 parts, 10 parts, 12 parts or 15 parts etc.; the parts by weight of absolute ethanol...
Embodiment 1
[0069] (1) First, heat 100 parts of pure water to 60°C, then add 100 parts of sodium montmorillonite and stir well, then add 10 parts of cetyltrimethylammonium bromide and continue stirring for 2 hours, and finally filter and fully washed with pure water, and then the filter cake was fully dried to constant weight at 50°C to obtain organic montmorillonite;
[0070] (2) Add 5 parts of organic montmorillonite prepared in step (1) to 100 parts of absolute ethanol at a temperature of 50° C. and stir at high speed for 1 h, then add 100 parts of polyamide resin (produced by DuPont, USA, model: Law-B), and continue to stir vigorously for 1h, finally filter and fully wash with absolute ethanol, and then fully dry the filter cake at 100°C to constant weight, that is, the organic montmorillonite modified polyamide resin is obtained;
[0071] (3) Put 90 parts of the organic montmorillonite modified polyamide resin prepared in step (2) and 30 parts of calcium carbonate powder (with a part...
Embodiment 2
[0076](1) First, heat 200 parts of pure water to 80°C, then add 100 parts of sodium montmorillonite and stir well, then add 10 parts of cetyltrimethylammonium bromide, 10 parts of octadecyl trimethylammonium Methyl ammonium chloride and continue to fully stir for 3 hours, and finally filter and fully wash with pure water, and then fully dry the filter cake at 60°C to constant weight to obtain organic montmorillonite.
[0077] (2) Add 15 parts of organic montmorillonite prepared in step (1) to 300 parts of absolute ethanol at a temperature of 70°C and stir at high speed for 2 hours, then add 100 parts of polyamide resin, and continue to stir vigorously for 3 hours, and finally Filter and fully wash with absolute ethanol, and then fully dry the filter cake to constant weight at 120°C to obtain the organic montmorillonite-modified polyamide resin.
[0078] (3) 100 parts of step (2) prepared organic montmorillonite modified polyamide resin, 30 parts of calcium carbonate powder, 20...
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