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    • 55. 发明申请
    • CVD DENSIFIED PREFORM FOLLOWED BY VPI AND RTM
    • 由VPI和RTM进行的CVD稀释预处理
    • US20090194895A1
    • 2009-08-06
    • US12027120
    • 2008-02-06
    • Mark L. La ForestNeil MurdieAllen H. Simpson
    • Mark L. La ForestNeil MurdieAllen H. Simpson
    • C01B31/10
    • F16D69/023C04B35/83C04B2235/608C04B2235/614C04B2235/616C04B2235/77
    • Method for producing carbon-carbon composite brake discs by: (a) providing annular nonwoven carbon fiber brake disc preforms; (b) carbonizing the brake disc preforms; (c) densifying the carbonized preforms by CVD/CVI (chemical vapor deposition/chemical vapor infiltration); (d) densifying the products of step (c) with isotropic or mesophase pitch by VPI (vacuum pitch infiltration) or RTM (resin transfer molding) processing; (e) carbonizing the preforms to remove non-carbon volatiles from the pitch and to open porosity in the pitch-infused preforms; (f) densifying the products of step (e) with isotropic or mesophase pitch by VPI or RTM processing; (g) carbonizing the preforms to remove non-carbon volatiles from pitch and to open porosity in the pitch-infused preforms; and (h) heat-treating the resulting pitch-densified carbon-carbon composite brake disc preforms. This manufacturing approach reduces lot-to-lot variability in friction performance of the resulting carbon-carbon composite brake discs.
    • 通过以下方法生产碳碳复合制动盘的方法:(a)提供环形非织造碳纤维制动盘预制件; (b)将制动盘预制件碳化; (c)通过CVD / CVI(化学气相沉积/化学气相渗透)使碳化预成型体致密化; (d)通过VPI(真空间距浸渗)或RTM(树脂传递模塑)加工使各向同性或中间相沥青致密化步骤(c)的产物; (e)将预成型坯碳化以从间距中除去非碳挥发物并在沥青注入的预制件中开孔; (f)通过VPI或RTM处理使各向同性或中间相沥青致密化步骤(e)的产物; (g)将预成型坯碳化以从间距中除去非碳挥发物并在沥青注入的预制件中开孔; 和(h)对所得沥青密实的碳 - 碳复合制动盘预制件进行热处理。 这种制造方法减少了所得碳 - 碳复合制动盘的摩擦性能的批次变化。