3D printing molding wax with high rigid-tough balance and preparation method thereof

Abstract

The invention discloses a 3D printing molding wax with high rigid-tough balance. The 3D printing molding wax comprises the following components by weight: 10-50Kg of hard wax; 0-50Kg of soft wax, 5-30Kg of a tackifier; 0.1-1Kg of a nucleating agent, 1-20Kg of a filler, 0.5-1Kg of a surfactant, 0.5-1Kg of a dispersant, 0.1-0.5Kg of an antioxidant and 0-1Kg of a toner. The invention also provides apreparation method of the molding wax. According to the invention, the rigidity and toughness of the 3D printing molding wax are regulated through the hard wax and the soft wax; with the addition of the nucleating agent, the crystallization of the wax is promoted and the wax crystallization is refined, so that the cooling speed of the 3D printing molding wax is fast, the surface finish of the 3D printing molding wax is high, and the rigid-tough balance of the material is improved; the monodisperse polystyrene microspheres can stably disperse and exist in the wax through the surfactant and thedispersing agent, and sedimentation is prevented, so that a spraying head is prevented from being blocked. The components in the 3D printing molding wax provided by the invention volatilize easily ata casting temperature, and the MJP 3D printing fineness is high, so that the fineness of cast metal products is high.

Description

technical field [0001] The invention relates to the field of preparation of 3D printing materials, in particular to a 3D printing molding wax with high rigidity and toughness balance and a preparation method thereof. Background technique [0002] Compared with traditional technologies, 3D printing wax molds have the advantages of cost saving, high intelligence, high complexity, and no need for molds. Therefore, the lost foam casting process can be widely used in precision casting industries such as jewelry. At present, 3D printing wax is divided into three types: wire, powder and block. 3D printing wax wire is used for FDM (Fused Deposition) 3D printers, 3D printing wax powder is used for SLS (Selective Laser Sintering) 3D printers, 3D printing wax The blocks are used in MJP (multi-jet inkjet) 3D printers, where the printing accuracy of MJP 3D printers can reach 16 μm, the printing speed is fast, and it has the incomparable advantages of FDM and SLS 3D, so it has great appli...

AI Technical Summary

Problems solved by technology

Chinese patent CN106317913A uses industrial casting wax, polyolefin resin, polyethylene wax, and stearic acid to prepare 3D printing wax wire. The polyolefin resin is difficult to volatilize, resulting in poor lost foam casting performance of printing wax, and this material is used for FDM 3D Printing results in poor print accuracy

Chinese patent CN104693579B prepares printing wax powder with wax powder, stearic acid or stearate, white carbon black, carbon black and chopped carbon fiber, but the material is used for SLS 3D printing, resulting in poor printing accuracy, white carbon black, The presence of carbon black and chopped carbon fibers is also not conducive to lost foam casting

Chinese patent CN105504836A prepared low penetration paraffin wax for 3D printing by using paraffin wax, viscosity modifier, antioxidant, tough polymer, plasticizer, high hardness polymer, low shrinkage resin, inorganic filler, dye, and phase transfer agent Used in MJP 3D printers, but tough polymers, high hardness polymers, low shrinkage resins and inorganic fillers are difficult to volatilize at high temperatures, so it is difficult to apply to lost foam casting

World patent WO2010132392A2 mixes hydrocarbon wax and hydrocarbon resin to obtain 3D printing molding wax for MJP 3D printers, but the molding wax has problems such as brittleness, fragility, poor oxidation resistance, and non-recyclability

Images