Study the influnce of acetone to improve surface finish of 3D printed part for ABS and PLA material

Rosli, Noor Nabila Natasya (2017) Study the influnce of acetone to improve surface finish of 3D printed part for ABS and PLA material. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Additive Manufacturing (AM) is defined as according to ASTM is a process joining materials to create objects from 3D CAD model via layer upon layer. One of the common technology of AM is Fused Deposited Modelling (FDM), which uses the method of extrusion to form parts. FDM technology has been applied in many applications such as consumer product manufacturing as well as end used parts. However, FDM suffers badly from low surface finish quality due to staircase effect and post treatment is required. In order to yield significant improvement of the surface roughness, the chemical treatment is one economic and fast method to enhance surface finish of ABS (Acrylonitrile Butadiene Stryene) fused modeled part by performing chemical treatment in Acetone solution. Therefore, this research aims to investigate the influence of chemical treatment on the FDM used parts in term of surface roughness. In this project, the 16 specimens of the cube with the dimension 20mm X 20mm X 20mm of ABS and PLA were fabricated using UP Plus 2D printer. The experiment data were taken of different percentage of Acetone added with water of 85%, 90%, 95% and 100% of Acetone As a result, the specimens were immersed in different percentage shows the different result of surface roughness reading by ABS and PLA. The chemical treatment that treated the specimens of ABS shows the result dramatically drop the surface reading of the specimens. It can be concluded that the ABS material has a low chemical resistance in order to dissolve in the chemical bath for improving the surface finish. But, for the PLA the result shows when use the higher the percentage of Acetone, the surface behavior becomes worse and make it pale due the chemical reaction. In a nutshell, the chemical treatment is a sustainable approach to enhance the surface quality of AM.

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