A scanning manometry method to image the atomization pressure field for pre-debugging the nanocomposite spraying system

Spray coating process stands out among film manufacturing techniques to fabricate nanocomposite films because of its high production efficiency, and broad material applicability. However, the issues such as blockages, overspray, and rebound in the spray coating process restrict the fabrication of high-quality nanocomposite films. The atomization pressure field describes the spraying characteristics, and measuring and analyzing this parameter is vital to ensure the spray coating process functions properly. In this paper, a scanning manometry method is proposed to measure the atomization pressure field. The method involves setting a tube array to scan the atomization field and reconstructing the pressure distribution by applying an imaging algorithm. This paper elaborates on the technical principle, implementation steps, and calibration of the scanning manometry method. Besides, the proposed method was validated by designing an actual testing system, and the 2D and 3D distribution images of the atomization pressure field were successfully obtained. The scanning manometry method features great potential for applications in nanocomposite spraying systems, assisting in fine-tuning the systems and stabilizing the production of nanocomposite films.