Design and Testing of a Nanocoating Water-Repellent Spray Machine for Traditional Woven Fabrics

Abstract

This research focuses on the design and development of nanocoating spray machine for traditional woven fabrics, enabling them to acquire a water-repellent surface. The study includes comprehensive testing of the machine's functionalities, such as water pressure levels, nozzle height, and rotational speed, to optimize the nanocoating process. The four main components of the nanocoating spray machine encompass the frame structure, the spray system, the power transmission system, and the fabric conveyance system. The spray system incorporates a water pump responsible for drawing the nanocoating material from a reservoir and distributing it through a fan-shaped nozzle. The power transmission system employs a motor-driven multi-layer belt pulley system to transfer power efficiently. Additionally, the fabric conveyance system is designed to smoothly guide the woven fabric through the nanocoating and squeezing process. Through a factorial experimental design, comprising 9 replications and totaling 36 experiments, the research aims to identify the ideal parameters for the nanocoating spray machine. Each experiment ensures uniform distribution of water droplets in 9 positions and achieves contact angles within the range of 125 - 129 degrees, indicating the desired water repellency on the fabric's surface. The utilization of Response Optimizer for analysis reveals the optimal settings for the nanocoating spray machine at 2 bars of water pressure, 30 centimeters of nozzle height, and 50 rotations per minute of rotational speed. These settings contribute to an average processing time of 11.9067 seconds.