PBO纤维复丝制备与可靠性分析

Manufacture and Reliability Analysis of Impregnated Poly-p-phenylenebenzobisthiazole Multifilament

通过PBO纤维复丝浸胶树脂配方研制与设计试样规格等方法,进行了PBO纤维复丝制备与可靠性研究。采用扫描电子显微镜(SEM)表征PBO表面形貌;利用X射线光电子能谱表征纤维表面与树脂配方化学特征;通过差示扫描量热法(DSC)对树脂配方进行固化动力学分析;利用动态热机械分析(DMA)对树脂配方热稳定性进行了表征;通过浇铸体力学性能分析树脂配方机械性能;通过PBO纤维复丝拉伸性能进行可靠性分析。结果表明:研制的FS-J树脂配方与PBO纤维匹配性高,浸润均匀,存储适用期长,端头补强牢固,制样周期短,复丝拉伸强度、弹性模量和延伸率数据平稳,波动性低,拉伸强度离散率<3%,测试可靠性高,可保证高质量、高效率、高稳定性的进行PBO纤维力学性能评价。

Impregnated poly-p-phenylenebenzobisthiazole(PBO)multifilament was manufactured by soaking resin preparation and sample design.Chemical properties of PBO fiber and soaking resin were characterized by X-ray photoelectron spectroscopy(XPS).Differential scanning calorimeter(DSC)was used to analyze curing reaction and kinetics of soaking resin.Dynamic mechanical analysis(DMA)was chosen to characterize resin thermostability.PBO surface and multifilament fracture were observed by scanning electron microscopy(SEM).In addition,casting analysis was used to characterize mechanical properties of soaking resin,and the reliability of multifilament was also indicated by tensile analysis.The results show that the soaking resin is a high matching recipe with uniform infiltration and long storage life for PBO multifilament,which has firm tip reinforcement and short preparation period.The tensile data of multifilament has low volatility,and strength dispersion is under 3%.This would not only improve the reliability and stability of mechanical test,but also increase the efficiency of sample preparation.