Hybrid polyvinyl butyral (PVB) nanocomposite films comprising surface-treated carbon nanotubes (CNT-COOH) and nanoclays (NC) were tested for their “trouser-leg” fracture toughness in comparison to the values of the respective CNT and NC parent composites and to that of the pristine PVB film. Relative to the fracture toughness of the pristine PVB, the parent composites PVB/CNT-COOH-0.2% and PVB/NC-2% and the PVB/CNT-COOH-0.2%/NC-2% hybrid exhibited 105, 118, and 181% improvements, respectively. These were both impressive fracture toughness improvements and a significant hybrid effect – the latter being only slightly lower than the nominal maximum effect of 223% based on the combined improvements of the parent composites. Part of the samples was tested qualitatively by ball impact test of ballistic glass samples with relevant films. Among these samples, the hybrid film presented the best result. A significant linear correlation between fracture surface energy and roughness values was taken to reflect a fracture resistance mechanism of crack front slowdown by its interactions with nanoparticles.

测试了包含表面处理的碳纳米管（CNT-COOH）和纳米粘土（NC）的杂化聚乙烯醇缩丁醛（PVB）纳米复合膜的“裤腿”断裂韧性，并与相应的CNT和NC母体复合材料的值进行了比较。原始PVB膜的性能。相对于原始PVB的断裂韧性，母体复合材料PVB / CNT-COOH-0.2％和PVB / NC-2％以及PVB / CNT-COOH-0.2％/ NC-2％杂化物表现出105、118和分别改善了181％。这些都是显着的断裂韧性改进和显着的混合效应-基于母体复合材料的综合改进，后者仅略低于名义最大效应223％。通过具有相关膜的防弹玻璃样品的球冲击试验，定性地测试了部分样品。在这些样品中，混合膜表现最好。断口表面能和粗糙度值之间存在显着的线性相关关系，以反映裂纹前沿与纳米颗粒之间相互作用的抗断裂机理。