Surface Plasma Modification and Coating Properties of Quartz Fiber

As an amorphous material, quartz fiber at high temperature is prone to cracks and protrusions on the surface. When the temperature reaches 950 °C, the crystallization behavior causes a sharp drop in mechanical properties, which greatly limits its industrial application. Aiming at this problem, this study used a liquid-phase non-electrode plasma electrolysis treatment device to achieve continuous surface treatment of quartz fiber cloth deposited alumina ceramic coating to protect its mechanical properties, at high temperatures and explored the effect of the number of processing on the morphology and properties of the coating. The test results showed that the alumina ceramic coating was successfully deposited on the surface of the insulating material quartz fiber cloth by liquid-phase plasma electrolysis technology, and the coating improved the high-temperature resistance of the quartz fiber. As the number of processing increased, the deposition amount of the coating increased, and the protective performance decreased. When the number of processing was one time, the mechanical properties of the fiber were the best, and the tensile strength after heat treatment was 54.76 MPa, which was obviously improved compared with the blank group fiber, 37.14%.