A kind of polishing agent for 3D printing products and its preparation method and polishing method

Abstract

The invention discloses a polishing agent for a 3D printed product as well as preparation and polishing methods of the polishing agent. The polishing agent for the 3D printed product comprises the following components in parts by weight: 1-100 parts of a first solvent, 1-100 parts of water, 1-100 parts of a second solvent, 0-20 parts of a flame retardant and 0-2 parts of essence. The selected solvents have the characteristics of environment friendliness and the like, and defects of toxicity, harmness, heavy smell, flammability, explosivity and the like brought by solvents such as acetone used for smooth steam polishing can be overcome; and due to the existence of the second solvent, the first solvent is enabled to be dissolved into water, so that the solubility of the solvent in water is improved. The polishing agent is used for polishing a product in a way such as fogging, sprinkling, coating, showering and dipping so as to be high in polishing speed, good in polishing effect, free of product size limit, high in polishing uniformity, convenient and rapid in operation and suitable for large-scale application.

Description

technical field [0001] The invention belongs to the technical field of post-processing of 3D printing, and in particular relates to a polishing agent for 3D printing products and a polishing method thereof. Background technique [0002] Products that are 3D printed using fused deposition (FDM) methods, whether using industrial or desktop 3D printers, will show some layer effects, that is, layer-by-layer accumulation lines that are visible to the naked eye, resulting in rough, matte, and dull surfaces. Poor smoothness will ultimately affect the promotion and application of products. [0003] At present, for products manufactured by 3D printing equipment with FDM and PolyJet technology, the polishing technologies mainly include sanding, pearlescent treatment and steam smoothing. Sanding can be done by hand or with a belt sander. It is difficult to handle relatively small products, and it takes a long time. Manual sanding also consumes manpower, and the uniformity of sanding i...

AI Technical Summary

Problems solved by technology

Sanding can be done by hand or with a belt sander. It is difficult to handle relatively small products, and it takes a long time. Manual sanding also consumes manpower, and the uniformity of sanding is also lacking. It is not suitable for large-scale applications; Pearlescent treatment Using the nozzle to spray medium beads at high speed towards the polishing object for polishing can only achieve a uniform matt effect, but cannot achieve high gloss, and it takes a long time. The size of the processed product is very limited. At the same time, the medium sprayed by pearlescent treatment is fine Grinding thermoplastic particles are expensive and not suitable for large-scale applications; steam smoothing places the product in an acetone steam tank, and uses steam to melt a layer of about 2 microns on the surface of the product to achieve the purpose of polishing. This method exists: Disadvantages such as high equipment cost, flammable and explosive solvent vapor and poisonous to human body, limited product size, etc. are not suitable for large-scale application

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