In this study poly (vinyl butyral)/silica (PVB/SiO₂) composite films were subjected to the cavitation process. The experiments were carried out with a 10 wt.% PVB solution in ethanol. Silica nanoparticles were added into the solution in different concentration of 1, 3 and 5 wt.% SiO₂ in regard to PVB. Composite films were cast from these solutions and subjected to ultrasonic cavitation. Optical images of their surfaces were analyzed before and after cavitation, by Image-Pro Plus software. The results revealed that the PVB film with 5 wt.% SiO₂ nanoparticles demonstrated the greatest improvement in microhardness with the best cavitation resistance compared to other films.

在这项研究中，对聚乙烯醇缩丁醛/二氧化硅（PVB / SiO ₂）复合膜进行了空化处理。用10重量％PVB的乙醇溶液进行实验。相对于PVB，将二氧化硅纳米颗粒以1、3和5重量％SiO _2的不同浓度添加到溶液中。从这些溶液中浇铸复合膜并进行超声空化。在空化之前和之后，通过Image-Pro Plus软件分析其表面的光学图像。结果表明，与其他膜相比，具有5 wt。％SiO ₂纳米颗粒的PVB膜在显微硬度方面具有最大的改进，并且具有最佳的抗气蚀性。