A kind of preparation method of 3D printing zirconia powder molding material

Abstract

The invention discloses a preparation method of a 3D printing zirconium dioxide powder moulding material. The preparation method of the 3D printing zirconium dioxide powder moulding material is characterized by comprising the following steps: carrying out pre-treatment on zirconium dioxide powder in an ethanol solvent by adopting allyl trimethoxy silicane, so that pretreated zirconium dioxide powder is obtained; then adding 60-72% by mass of petroleum ether and 3-8% by mass of polyethylene into a reactor, heating, stirring, dissolving, and then adding 20-30% by mass of pretreated zirconium dioxide powder and 1-4% by mass of azodiisobutyronitrile, wherein the sum of the percents by mass of all the components is one hundred percent; heating while stirring until the temperature is increased to 80+ / -5 DEG C, carrying out constant temperature refluxing reaction for 6-8 hours, cooling to room temperature, and then carrying out spray drying, so that the 3D printing zirconium dioxide powder moulding material is obtained. The 3D printing zirconium dioxide powder moulding material can be directly moulded without spraying a binding agent in a range that the temperature is increased to 125-137 DEG C by heating and has the advantages that a preparation technology is simple, conditions are easy to control, production cost is low, and industrial production can be easily realized.

Description

technical field [0001] The invention relates to a method for preparing a 3D printing zirconia powder forming material, which belongs to the field of rapid prototyping materials, and in particular to a preparation process and application of a 3D printing rapid prototyping zirconia powder material. Background technique [0002] Zirconia is a special material. The toughening method is mainly achieved by using the phase transition of zirconia. Pure zirconia is a white solid. When it contains impurities, it will appear gray or light yellow. Adding a color developer can also Various other colors are displayed. In terms of structural ceramics, zirconia ceramics are widely used in the field of structural ceramics due to their high toughness, high flexural strength, high wear resistance, excellent heat insulation performance, and thermal expansion coefficient close to steel. In terms of functional ceramics, its excellent high temperature resistance is used as induction heating tubes...

AI Technical Summary

Problems solved by technology

[0005] 3D printing technologies include 3DP technology, FDM fusion lamination molding technology, SLA stereolithography technology, SLS selective laser sintering technology, DLP laser molding technology and UV ultraviolet molding technology. The most widely used is FDM3D printing technology. This technology can be used in the home. It is easy to operate and the materials used are generally available. The products printed by this technology are also close to our daily necessities. The materials used are mainly environmentally friendly polymer materials. Such as: PLA, PCL, PHA, PBS, PA, ABS, PC, PS, PVC, because this technology is generally printed on the desktop, the smell produced by the molten polymer material or the harmful substances produced by decomposition directly contact us contact with other people, it is easy to cause safety problems

[0008] Due to the large particle size of the 3DP rapid prototyping material powder, it is difficult to form thin-walled parts, the forming accuracy of tiny parts is not high enough, and the surface has a relatively rough feeling; in addition, because the binder is not strong enough, there is a low strength of the formed part Not enough

In addition, the 3DP molding materials currently sold in the market are basically monopolized by foreign companies, and the price is high, which seriously restricts the promotion and popularization of 3DP molding technology in my country.