Sand table 3D printing material
A 3D printing and sand table technology, applied in the field of 3D printing materials, can solve the problems of environmental impact, sand table abandonment, increased cost, etc., to achieve the effect of ensuring liquidity, saving resources and reducing costs
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Embodiment 1
[0013] A 3D printing material for a sand table, comprising: 22 parts by weight of recycled sand table powder, 5 parts by weight of wood fiber, binder-among them, 5 parts by weight of methyl cellulose, 3 parts by weight of polyvinyl alcohol, 30 parts by weight of water, 1 part by weight of sulfate gypsum coagulant.
[0014] Among them, the recovered sand table powder is obtained after vibrating, crushing and sieving the discarded sand table, with D50=7 microns and sphericity of 0.7.
[0015] The length of the wood fibers is one-fifth of the thickness of the thinnest part of the manufactured product.
Embodiment 2
[0017] A 3D printing material for a sand table, comprising: 30 parts by weight of recycled sand table powder, 2 parts by weight of bamboo fiber, 4 parts by weight of a binder-polyvinyl alcohol, 10 parts by weight of water, and 3 parts by weight of a nitrate gypsum accelerator.
[0018] Among them, the recovered sand table powder is obtained after vibrating, crushing and sieving the waste sand table, with D50=10 microns and sphericity equal to 0.9.
[0019] The length of the bamboo fiber is a quarter of the thickness of the thinnest part of the manufactured product.
Embodiment 3
[0021] A 3D printing material for a sand table, comprising: 28 parts by weight of recycled sand table powder, 5 parts by weight of wood fiber, 2 parts by weight of carbon fiber, 6 parts by weight of binder-hydroxyethyl cellulose, 22 parts by weight of water, sulfate gypsum 2 parts by weight of coagulant.
[0022] Among them, the recovered sand table powder is obtained after vibrating, crushing and sieving the discarded sand table, with D50=15 microns and sphericity of 0.8.
[0023] The length of carbon fiber is one-third of the thickness of the thinnest part of the manufactured product.
[0024] After the materials in the above examples are mixed and reacted completely, they can be fed and printed to obtain a sand table model of the desired shape.
[0025] The printing material of the present invention recycles waste sand table materials for the second time, introduces binders and coagulants to ensure fluidity, and toughens natural fibers, which is environmentally friendly an...
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Abstract
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