The invention discloses a metal or ceramic consumable item for FDM 3D printing, a preparation method for the metal or ceramic consumable item and a finished product printing method The metal or ceramic consumable item comprises, by weight, 15-50 parts of a high polymer material, 0-2 parts of a compatilizer, 50-80 parts of metal powder or ceramic powder, 01-1 part of an antioxygen and 01-2 parts of a lubricating agent The cost for equipment, the materials and machining is low; a printing structure is free of limitation, collapsing conditions do not exist in the printing process, supports can be removed before fusion sintering of the product, and treatment is easier compared with a manner that the supports are removed after SLS or EBAM fusion sintering; the requirements for the sphericity degree, the size distribution, the mobility and the like are relatively low; the types of metal and ceramic capable of being printed are wider; and the density of the finished products is higher, the strength is high, the degree of finish is higher, the miniaturization capacity is high, the thin-wall capacity is high, the complexity is high, the design tolerance level is high, and the material adaption scope is wide

Metal or ceramic consumable item for FDM 3D printing, preparation method for metal or ceramic consumable item and finished product printing method

The invention discloses a supporting material for 3D printing.The supporting material is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl alcohol, 2-3 parts of montmorillonoid, 15-30 parts of calcium carbonate, 0.5-1 part of an outer lubricant and 0-1 part of a coupling agent.The material prepared from the formula can be dissolved in water at normal temperature, 3D printing extruded wires are fine and smooth and can be used as the supporting material, and can also be used for independent printing, cost is low, hardness is improved, storage convenience at normal temperature is improved, namely, the supporting material is not required to be packaged under vacuum when stored at normal temperature, and adhesion is avoided when the supporting material sucks water in air.

Supporting material for 3D printing and preparation method of supporting material

The invention relates to a modified nylon material for 3D printing applied to an FDM (fused deposition molding) technology and a printing method of the modified nylon material. The modified nylon material is prepared from a nylon resin matrix and a tackifying nucleating agent, wherein the tackifying nucleating agent is formed by compounding of an ionic liquid and carbon nano-filler. A preparation method comprises the steps as follows: (1) the carbon nano-filler and the ionic liquid are mixed and subjected to mechanical milling, and the tackifying nucleating agent is prepared; (2) the tackifying nucleating agent is blended with nylon resin and then molten and extruded by a double-screw extruder for cooling granulation; (3) granules are extruded and machined into wire materials for 3D printing after being dried. The printing method comprises the steps as follows: FDM equipment is used for depositing and printing the wire materials for 3D printing layer by layer into a product in accordance with ISO standards, and then the obtained product is subjected to ultrasonic cleaning, drying and heat treatment. According to the modified nylon material provided by the invention, the occurrence of edge warping in a 3D printing process can be effectively prevented, and the finally printed product has the advantages of outstanding mechanical property, optimum dimensional stability, smooth surface, low cost and the like.

Modified nylon material for 3D printing applied to FDM (fused deposition molding) technology and printing method of modified nylon material

The invention discloses a vinol wire used for fused deposition molding and capable of being quickly dissolved and a preparation method thereof. The vinol wire is prepared from the following components: 100 parts of vinol, 1-8 parts of modified starch, 10-15 parts of acid agent, 10-15 parts of alkaline agent, 25-35 parts of plasticizer, 0.1-1 part of antioxidant, and 0.1-8 parts of filler additive. The modified starch, the acid agent and the alkaline agent are combined and can accelerate the dissolution of the vinol, and the vinol wire can be completely removed within a very short time (within 30 minutes); meanwhile, the modified starch, the acid agent and the alkaline agent have a certain plastification effect on the vinol, and can realize a synergistic effect with the plasticizer to further improve the processing performance and mechanical performance of the vinol wire. By adopting the preparation method of the vinol wire, homogeneous dispersion of the modified starch in the vinol can be ensured, the process is simple, the operation is easy, and large-scale popularization and production can be realized.

Vinol wire used for fused deposition molding and capable of being quickly dissolved and preparation method thereof

A process of manufacturing a three-dimensional object includes a step of depositing and solidifying molten polyvinyl alcohol to form a support structure; and a step of depositing and solidifying a molten thermoplastic polymer on the support structure to form a three-dimensional preform. The support structure has a mixture of at least 50% by weight of polyvinyl alcohol and at most 50% by weight of at least one polymer of polyvinyl butyral, polylactid acid, ethylene-vinylalcohol-vinylacetate terpolymer, vinyl acetate-vinyl pyrrolidone copolymer, acrylonitrile-butadiene-styrene terpolymer, polycaprolactone, vinyl acetate-vinyl caprolactame copolymer, and polyvinyl alcohol having a degree of hydrolysis DH of 30-65%. The support structure can be dissolved to form the three-dimensional object.

Use of mixtures of polyvinyl alcohol with less polar polymers as support structure in 3d printing process

The invention relates to a preparation method of high polymer materials, and particularly relates to a polyvinyl alcohol wire for fused deposition molding and a processing method of the polyvinyl alcohol wire. The polyvinyl alcohol wire comprises the following raw materials in parts by weight: 100 parts of polyvinyl alcohol resin, 20-40 parts of a plasticizer, 0.5-2 parts of an antioxidant, 5-10 parts of a heat stabilizer, 0.2-1 part of a lubricating agent and 0.1-0.5 part of an anti-blocking agent, wherein the anti-blocking agent is one of oleamide and erucyl amide. The polyvinyl alcohol wire disclosed by the invention has the advantages of high heat stability, good melt processing property, excellent mechanical property, stable wire diameter, good water solubility, simple production process, high efficiency and low cost.

Polyvinyl alcohol wire for fused deposition molding and processing method of polyvinyl alcohol wire

The invention relates to the technical field of 3D printing, in particular to a high-temperature-resistant nylon yarn material for 3D printing, a preparation method thereof and a method for performing 3D printing by applying the same. The high-temperature-resistant nylon yarn material contains the following raw materials in parts by weight: 90-100 parts of nylon resin, 1-10 parts of a reinforcing agent, 0.3-0.6 part of an antioxidant, and 0.1-0.3 part of a lubricant, wherein the reinforcing agent is organic modified montmorillonite. According to the invention, the high-strength nylon resin is used as a base material, the organic modified montmorillonite, the antioxidant and the lubricant are used for performing physical modification on the nylon resin, and the synergistic action among the components with different proportions is adjusted to improve the contractility and increase the thermal denaturation temperature of the nylon resin, so that the obtained high-temperature-resistant nylon yarn material for 3D printing is high in strength, low in shrinkage rate, low in warping deformation degree, and low in forming accuracy, and is high-temperature-resistant, and a support can be removed easily.

High-temperature-resistant nylon yarn material for 3D printing, preparation method thereof and method for performing 3D printing by applying same

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Polyvinyl alcohol wire for fused deposition molding and processing method of polyvinyl alcohol wire

High-temperature-resistant nylon yarn material for 3D printing, preparation method thereof and method for performing 3D printing by applying same