国产PAN基炭纤维增强炭基体复合材料的制动摩擦行为
发布时间：2018-10-04 22:29
【摘要】：分别采用国产聚丙烯腈基(即PAN基)炭纤维CCF700(A)和CCF300(B)及日本东丽PAN基炭纤维T300(C)编织二维针刺毡预制体,通过化学气相沉积结合树脂浸渍炭化增密技术制备飞机刹车副用炭/炭复合材料,在HJDS-Ⅱ型地面惯性台上测试这3种炭/炭复合材料的制动摩擦特性。结果表明:用国产炭纤维制备的炭/炭复合材料样件的整体石墨化度低于用进口炭纤维制备的样件。在模拟正常着陆能载下,国产炭纤维增强样件的减速率高于进口纤维增强样件。其中,采用CCF700炭纤维制备的材料A的摩擦因数较高、波动明显,而采用CCF300炭纤维制备的材料B的摩擦因数稳定在0.28左右。同时,刹车盘A和B的刹车过程相对平稳,刹停时间短,但刹车盘C在刹车结束前有明显的刹车力矩回升,有利于刹车过程的稳定性。材料A表面形成较厚的摩擦层,而材料B的摩擦表面摩擦层较薄,这与CCF300炭纤维具有良好的耐磨性有关。
[Abstract]:Two dimensional acrylonitrile-based (i.e. PAN) carbon fibers CCF700 (A) and CCF300 (B) and Toray PAN based carbon fiber T300 (C) were used to weave two-dimensional needle-felt preforms, respectively. Carbon / carbon composites for aircraft brake pairs were prepared by chemical vapor deposition (CVD) combined with resin impregnation and densification. The braking friction characteristics of the three carbon / carbon composites were measured on the HJDS- 鈪，
本文编号：2252118
[Abstract]:Two dimensional acrylonitrile-based (i.e. PAN) carbon fibers CCF700 (A) and CCF300 (B) and Toray PAN based carbon fiber T300 (C) were used to weave two-dimensional needle-felt preforms, respectively. Carbon / carbon composites for aircraft brake pairs were prepared by chemical vapor deposition (CVD) combined with resin impregnation and densification. The braking friction characteristics of the three carbon / carbon composites were measured on the HJDS- 鈪，
本文编号：2252118
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