A method for surface treatment of abs plastic fusion deposition molding

Abstract

The invention discloses a surface treatment method for fused deposition molding of ABS (acrylonitrile-butadiene-styrene) plastics. The surface treatment method comprises the following steps of: firstly, preparing polishing liquid, then uniformly applying the polishing liquid to the surface to be treated of a workpiece, and airing to complete the surface treatment. The surface treatment method forfused deposition molding of ABS plastics shortens the polishing period of the workpiece, has wide applicability, high polishing precision and good surface quality, and is not restricted by the size ofparts.

Description

technical field [0001] The invention belongs to the technical field of surface treatment and relates to a surface treatment method of ABS plastic fusion deposition molding. Background technique [0002] Fused deposition modeling (FDM) is the inverse process of tomography, that is, parts are layered, printed layer by layer by melting filaments, and then superimposed together to form a three-dimensional object, thereby realizing the manufacture of arbitrary complex parts. Compared with traditional mold processing, this technology has greatly reduced cycle time, low investment, low cost, and can manufacture more complex structures, so it is widely used in various industries. However, due to the characteristics of layer-by-layer printing in the additive manufacturing process, the parts have a "step" shape, which makes the surface of the parts rough and affects the appearance and use. In the study, it was found that the swelling of plastic parts by MMA (methyl methacrylate) can ...

AI Technical Summary

Problems solved by technology

For example, the sandblasting and rolling mechanical polishing method uses abrasive flow to cause brittle fracture of the protrusions on the surface of the workpiece to achieve the polishing effect. This method reduces the dimensional accuracy and is only suitable for large and easy-to-operate outer surfaces. The small inner surface is difficult to polish; surface coating treatment, the principle is the same as nail art or wall painting, this method has weak adhesion and large size increase; organic solvent surface treatment currently uses acetone, ethyl acetate, methyl ethyl ketone, dimethyl Acetamide, xylene, toluene, trichloroethylene, methyl ethyl ketone, methylene chloride, n-propyl bromide, and perchlorethylene are heated at high temperature or prepared with an aqueous solution, and the steam or aqueous solution is directly dissolved on the surface of the plastic part, resulting in The swelling effect makes it achieve a uniform grinding effect. Its disadvantages are long fumigation and soaking time, and the organic solvents are slightly toxic or toxic, volatile, easy to explode when heated too much, long reaction time, and have a great impact on the physical properties of the matrix material.