低聚倍半硅氧烷/聚酰亚胺复合薄膜的力学性能和疏水性能

摘要

具有优良的力学和疏水性能的复合薄膜在惯性约束物理实验中具有重要作用.在本文中,我们使用简单的溶液混合的方法合成了低聚倍半硅氧烷/聚酰亚胺(POSS/PI)复合薄膜.结果表明由于POSS的引入,力学性能和疏水性能显著增强.力学测试结果显示,当POSS质量分数为10%时,弹性模量和硬度分别达到29.29 GPa和29.29 MPa,相比纯的PI薄膜为14.9 GPa和0.64 MPa.同时,当POSS质量分数为20%,复合薄膜的接触角为83.59°,明显高于纯的PI薄膜(66°).因此,POSS/PI复合膜比纯PI薄膜显示了强大的生命力和极其广阔的应用前景在惯性约束聚变(ICF)物理实验中.%Composite films with excellent mechanical and hydrophobic properties are desired for use in inertial confinement fusion ( ICF) physics experiments. In this paper, we use the facile solution blend-ing method to synthesize polyhedral octakis ( trimenthyl siloxy) silsesquioxane /polyimide ( POSS/PI) composite films. The result suggested that the hydrophobic and mechanical properties were significantly enhanced in the presence of POSS. Mechanical results showed the maximum elastic modulus and hard-ness reached 29. 29 GPa and 1. 28 MPa respectively for the composite films containing 10% POSS, compared to the pure PI films 14.9 GPa and 0.64 MPa. The composite films showed the contact angles of 83.59° for 20% POSSS included, which is higher than that of pure PI film ( 66°) . As a conse-quence, the developed POSS/PI composite film showed a great vitality and an extremely wide applica-tion prospect in inertial confinement fusion ( ICF) physics experiments than pure PI film.