MATHEMATICAL MODEL OF THE CONCENTRATION DISTRIBUTION OF VOLATILE ORGANIC COMPOUNDS IN 3D PRINTING

Sharara Simbarashe

The present study is devoted to the analysis of the distribution of harmful emissions of polymer volatile organic compounds arising in the process of three-dimensional printing. The relevance of this study is due to the development of this technology, which in a number of areas replaces the casting and stamping of polymer products, being at the same time more economical in terms of energy and resource costs. At the same time, due to the novelty of the technology, the effect of the volatile organic compounds formed on the human body and the environment has not been sufficiently studied. In connection with the above, there is a need to preventatively minimize the concentration of harmful emissions. The conducted research uses mathematical and simulation modeling methods used to build a predictive dynamic model that allows for operational control with the ability to compensate for the inertia of concentration sensors. As a result of the study, it is shown that the concentration of emissions decreases exponentially as a function of the distance from the place of application of the melt (extruder head) to the workpiece. It has been established that the maximum concentration has a minimum at an ambient temperature of 20 0C. The discussion of the results led to the formulation of a hypothesis about the feasibility of a closed system of predictive control of the concentration of harmful emissions, suitable for use as one of the contours of the print parameter control system.

Keywords:volatile organic compounds, 3d printing, concentration, diffusion, simulation, predictive management