关键词: 振动与波, 嵌入式共固化阻尼复合材料, 超高温, 老化处理, 自由衰减实验, 阻尼性能

Abstract:

Using the experiment method, a new kind of viscoelastic damping material ingredient is presented which can co-cure with carbon fiber/ bismaleimides resin prepreg (T700/QY260）at 260 ℃ high temperature, after the mechanical properties, damping performance and high temperature resistant performance of AFLAS fluorine rubber is investigated synthetically. The viscoelastic damping material is dissolved in tetrahydrofuran dissol-vant to form viscoelastic material solution, and then the embedded high-temperature co-curing high damping composite specimens are manufactured on the basis of double-sided brush coating process and autoclave pro-cess autoclave process. The free vibration attenuation experiments of these specimens are used to measure the relative damping coefficient after aging experiment processing at normal temperature, 230℃*96h and 260℃*96h. The relationships of different aging temperature treatment with relative damping coefficient and damp-ing material thickness are obtained in detail. The results verify that embedded co-cured composite damping structure has excellent ultra high temperature resistance and stability of damping performance.