Preparation method of three dimensional printing rapid forming inorganic powder material

Abstract

The invention discloses a preparation method of a three dimensional printing rapid forming inorganic powder material, and the method is characterized in that: adding 8%-22% by mass of vinyltriethoxysilane and 78%-92% by mass of an inorganic powder material into a grinding machine, starting the grinding machine for grinding for 4-6h in 200 rpm / min speed at room temperature to obtain a preprocessed inorganic powder material; then adding 85%-96% by mass of preprocessed inorganic powder material and 4%-15% of EVA (ethylene vinyl-acetate copolymer) hot melt adhesive powder into the grinding machine, starting the grinding machine for grinding for 4-6h in 200 rpm / min speed at room temperature to obtain the three dimensional printing rapid forming inorganic powder material, The method has the advantages of being simple in preparation process, easy to control, low in production cost, and easy in industrial production. The material can be directly formed by heating at 140 to 180 DEG C and under the pressure in the 2MPa-6MPa range without spraying of an adhesive, and the forming operation is simple.

Description

technical field [0001] The invention relates to a method for preparing a 3D printing inorganic powder rapid prototyping material, which belongs to the field of rapid prototyping materials, and in particular to a preparation process for a 3D printing rapid prototyping inorganic powder material. Background technique [0002] Three Dimonsion Printing (Three Dimonsion Printing, referred to as Three DP) is a rapid prototyping technology, which can divide the three-dimensional model data designed by the computer into layer model data, and build specific raw materials layer by layer until the entire entity is constructed. Three-DP molding has the advantages of low cost, no pollution in the working process, and fast molding speed. [0003] Rapid Prototyping Technology, also known as Rapid Prototyping Manufacturing (RPM) technology, was born in the late 1980s. It is a high-tech manufacturing technology based on the material accumulation method and is considered to be a major achievem...

AI Technical Summary

Problems solved by technology

[0004] 3D printing technology includes three DP technology, FDM fusion lamination molding technology, SLA stereolithography technology, SLS selective laser sintering technology, DLP laser molding technology and UV ultraviolet molding technology. The materials used in different technologies are completely different, which are different from our ordinary people and families The most common application is FDM 3D printing technology. This technology can be used in the home. It is easy to operate and the materials used are widely available. The products printed by this technology are also close to our daily necessities. The materials used are mainly environmentally friendly and high-quality. Molecular materials, such as: PLA, PCL PHA PBS PA ABS PC PS POM PVC, because this technology is generally printed on the desktop, the smell or decomposition of the molten polymer material produces harmful substances that are directly in contact with our people , may cause security problems

[0007] Due to the large particle size of the three DP 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 more obvious roughness; Insufficient

In addition, the three-DP process 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 the three-DP molding technology in my country.