Pitch infiltration of carbon fiber preforms under high pressure
    12.
    发明申请
    Pitch infiltration of carbon fiber preforms under high pressure 有权
    在高压下沥青渗碳碳纤维预制件

    公开(公告)号:US20080277824A1

    公开(公告)日:2008-11-13

    申请号:US11455743

    申请日:2006-06-20

    IPC分类号: B29C45/14

    摘要: Process of manufacturing carbon-carbon composite preform by: (i.) arranging batch of carbon fiber preforms in infiltration vessel; (ii.) flooding vessel with hot liquid phase pitch at atmospheric pressure in inert atmosphere; (iii.) raising pressure in infiltration vessel to elevated pressure, and then slowly lowering pressure; and (iv.) repeating step (iii.). An apparatus that may be used is a heated infiltration vessel capable of operating at pressures above 100 psi, possible equipped with means to circulate heated pitch inside the vessel, in order to facilitate heat transfer into the carbon fiber preforms being infiltrated by the pitch. The need for a vacuum pump is eliminated, and the time spent heating the preform is substantially reduced. Instead of vacuum, cycled high pressure is employed to infiltrate carbon fiber preforms with pitch. The use of preheated pitch as a heat transfer agent avoids the slow transfer of heat into the preform prior to infiltration.

    摘要翻译: 通过以下步骤制造碳 - 碳复合预制件的方法:(i)在渗透容器中排列一批碳纤维预制件; (ii)在大气压下在惰性气氛中具有热液相沥青的溢流容器; (iii)将渗透容器中的压力提高到升高压力,然后缓慢降低压力; 和(iv)重复步骤(iii)。 可以使用的装置是能够在高于100psi的压力下操作的加热的渗透容器,可能配备有在容器内循环加热沥青的装置,以便促进被沥青渗透的碳纤维预制件的热传递。 消除了对真空泵的需要,并且大大减少了加热预制件所花费的时间。 代替真空,采用循环高压渗透具有沥青的碳纤维预成型件。 使用预热的沥青作为传热剂避免了在渗透之前将热量缓慢地传递到预制件中。

    Method of manufacturing a carbon-carbon brake disc
    13.
    发明申请
    Method of manufacturing a carbon-carbon brake disc 有权
    制造碳碳制动盘的方法

    公开(公告)号:US20080251959A1

    公开(公告)日:2008-10-16

    申请号:US12213235

    申请日:2008-06-17

    IPC分类号: C01B31/00

    摘要: A method of manufacturing a carbon-carbon brake disc uses a restraint fixture (12) that includes a preform retention region configured to limit contracting forces applied against a preform (10) in the preform retention region when the restraint fixture (12) thermally contracts. In one embodiment, the restraint fixture (12) comprises a band (12) having a first surface defining the preform retention region and a first expansion portion (26, 28, 29) adapted to deform upon application of a force to the band (12).

    摘要翻译: 制造碳碳制动盘的方法使用约束固定装置(12),所述约束装置包括预制件保持区域,所述预制件保持区域被构造成当所述约束装置(12)热收缩时限制在所述预成型件保持区域中施加的预成型件(10)的收缩力。 在一个实施例中,约束固定件(12)包括具有限定预成型件保持区域的第一表面的带(12)和适于在对带(12)施加力时变形的第一膨胀部分(26,28,29) )。

    Resin transfer molding to toughen composite beam keys
    14.
    发明授权
    Resin transfer molding to toughen composite beam keys 失效
    树脂传递成型加强复合梁键

    公开(公告)号:US07763192B2

    公开(公告)日:2010-07-27

    申请号:US11389022

    申请日:2006-03-27

    IPC分类号: B29C45/14 C01B31/02 B64C25/00

    摘要: Method of manufacturing composite wheel beam key by: forming entirely from carbon fiber precursors or from carbon fiber precursors and ceramic materials a fibrous preform blank in a shape of a desired wheel beam key, wherein the fiber volume fraction of the preform blank is at least 50%; carbonizing the carbon fiber precursors; rigidifying the carbonized preform blank by subjecting it to at least one cycle of CVD; grinding the surface of the preform blank to open pores on its surface; and subjecting the open-pored preform blank to RTM processing with pitch. Also, carbon-carbon composite or carbon-ceramic composite wheel beam key produced by this process, having a density of from 1.5 g/cc to 2.1 g/cc and a maximum internal porosity of 10% or less.

    摘要翻译: 通过以下方式制造复合轮束梁钥匙的方法:完全由碳纤维前体或碳纤维前体和陶瓷材料形成具有所需轮梁钥匙形状的纤维预制坯料,其中预制坯坯的纤维体积分数至少为50 %; 碳化碳纤维前体; 通过使碳化预成型坯坯进行CVD的至少一个循环来硬化; 研磨预制坯坯的表面以在其表面上开孔; 并对开孔预成型件坯料进行间距处理。 此外,通过该方法制造的碳 - 碳复合材料或碳 - 陶瓷复合材料轮束密钥的密度为1.5g / cc至2.1g / cc,最大内部孔隙率为10%以下。

    VPI-RTM-CVD brake disc preform densification
    15.
    发明授权
    VPI-RTM-CVD brake disc preform densification 失效
    VPI-RTM-CVD制动盘预制件致密化

    公开(公告)号:US07700014B2

    公开(公告)日:2010-04-20

    申请号:US11402791

    申请日:2006-04-13

    IPC分类号: C01B31/00

    摘要: Method of manufacturing dense carbon-carbon composite material by: infiltrating a fibrous preform with pitch to form pitch-infiltrated preform; carbonizing the pitch-infiltrated preform; injecting resin or pitch into the preform in a mold; oxygen stabilizing the filled preform and carbonizing and heat-treating the oxygen-stabilized impregnated preform; and subjecting the preform to a single final cycle of chemical vapor deposition. This process reduces densification time as compared to comparable conventional carbon-carbon composite manufacturing procedures.

    摘要翻译: 通过以下步骤制造致密碳 - 碳复合材料的方法:用沥青渗透纤维预制件以形成沥青渗透的预制件; 沥青渗透预制件碳化; 在模具中将树脂或沥青注入预成型件; 氧稳定填充的预制件并碳化和热处理氧稳定的浸渍的预制件; 并对预制件进行化学气相沉积的单个最后循环。 与可比较的常规碳 - 碳复合材料制造方法相比,该方法降低致密化时间。

    Activated carbon to immobilize pitch in constraint fixture during carbonization
    16.
    发明授权
    Activated carbon to immobilize pitch in constraint fixture during carbonization 失效
    活性炭在碳化期间固定约束夹具中的沥青

    公开(公告)号:US07632435B2

    公开(公告)日:2009-12-15

    申请号:US11435734

    申请日:2006-05-18

    IPC分类号: C01B31/00

    摘要: Method of carbonizing pitch-infiltrated fibrous annular preform by: infiltrating the preform with pitch; placing the pitch-infiltrated preform in a constraint fixture having an ejector base plate, an inner wall, an outer wall, and a top press plate; selecting the relative sizes of the preform and the constraint fixture so that a layer of inert friable material may be situated between the preform and walls of the constraint fixture; placing inert friable material (e.g., activated carbon) between the preform and the top, bottom, and walls of the constraint fixture; and subjecting the pitch-infiltrated fibrous preform to carbonization in the constraint fixture. The activated carbon or other inert friable material adsorbs pitch molecules that escape the preform during carbonization, which reduces problems with foaming. The layer of activated carbon or other friable material between the fibrous preform and the constraint fixture also provides an easily crushable region that facilitates removal of the preform from the constraint fixture after carbonization.

    摘要翻译: 沥青渗透纤维环状预成型体通过以下方式浸渗预成型体的方法: 将沥青渗透的预成型件放置在具有顶出板底板,内壁,外壁和顶部压板的约束夹具中; 选择预成型件和约束夹具的相对尺寸,使得惰性脆性材料层可以位于约束夹具的预成型件和壁之间; 将惰性脆性材料(例如,活性炭)放置在预成型件与约束夹具的顶部,底部和壁之间; 并且在沥青渗透的纤维预型体中在约束夹具中进行碳化。 活性炭或其他惰性易碎材料在碳化过程中吸附脱离预成型体的沥青分子,这减少了起泡问题。 在纤维预制件和约束夹具之间的活性炭层或其它易碎材料层还提供了易于压碎的区域,其有助于在碳化之后从约束夹具上移除预型件。

    Resin transfer molding to toughen composite beam keys
    17.
    发明申请
    Resin transfer molding to toughen composite beam keys 失效
    树脂传递成型加强复合梁键

    公开(公告)号:US20090236763A1

    公开(公告)日:2009-09-24

    申请号:US11389022

    申请日:2006-03-27

    IPC分类号: B29C45/02 C01B31/02

    摘要: Method of manufacturing composite wheel beam key by: forming entirely from carbon fiber precursors or from carbon fiber precursors and ceramic materials a fibrous preform blank in a shape of a desired wheel beam key, wherein the fiber volume fraction of the preform blank is at least 50%; carbonizing the carbon fiber precursors; rigidifying the carbonized preform blank by subjecting it to at least one cycle of CVD; grinding the surface of the preform blank to open pores on its surface; and subjecting the open-pored preform blank to RTM processing with pitch. Also, carbon-carbon composite or carbon-ceramic composite wheel beam key produced by this process, having a density of from 1.5 g/cc to 2.1 g/cc and a maximum internal porosity of 10% or less.

    摘要翻译: 通过以下方式制造复合轮束梁钥匙的方法:完全由碳纤维前体或碳纤维前体和陶瓷材料形成所需轮梁钥匙形状的纤维预制坯料,其中预制坯坯的纤维体积分数至少为50 %; 碳化碳纤维前体; 通过使碳化预成型坯坯进行CVD的至少一个循环来硬化; 研磨预制坯坯的表面以在其表面上开孔; 并对开孔预成型件坯料进行间距处理。 此外,通过该方法制造的碳 - 碳复合材料或碳 - 陶瓷复合材料轮束密钥的密度为1.5g / cc至2.1g / cc,最大内部孔隙率为10%以下。

    Method of manufacturing a carbon-carbon brake disc
    19.
    发明授权
    Method of manufacturing a carbon-carbon brake disc 有权
    制造碳碳制动盘的方法

    公开(公告)号:US08105511B2

    公开(公告)日:2012-01-31

    申请号:US12213235

    申请日:2008-06-17

    IPC分类号: C01B31/00

    摘要: A method of manufacturing a carbon-carbon brake disc uses a restraint fixture (12) that includes a preform retention region configured to limit contracting forces applied against a preform (10) in the preform retention region when the restraint fixture (12) thermally contracts. In one embodiment, the restraint fixture (12) comprises a band (12) having a first surface defining the preform retention region and a first expansion portion (26, 28, 29) adapted to deform upon application of a force to the band (12).

    摘要翻译: 制造碳碳制动盘的方法使用约束固定装置(12),所述约束装置包括预制件保持区域,所述预制件保持区域被构造成当所述约束装置(12)热收缩时限制在所述预成型件保持区域中施加的预成型件(10)的收缩力。 在一个实施例中,约束固定件(12)包括具有限定预成型件保持区域的第一表面的带(12)和适于在对带(12)施加力时变形的第一膨胀部分(26,28,29) )。

    Bonding of carbon-carbon composites using titanium carbide
    20.
    发明申请
    Bonding of carbon-carbon composites using titanium carbide 有权
    使用碳化钛粘结碳 - 碳复合材料

    公开(公告)号:US20070235126A1

    公开(公告)日:2007-10-11

    申请号:US11391255

    申请日:2006-03-29

    IPC分类号: B32B37/00

    摘要: Method of joining carbon-carbon composite pieces together, e.g. in the refurbishment of aircraft brake discs. The method includes the steps of: providing a first carbon-carbon composite piece and a second carbon-carbon composite piece, wherein the second carbon-carbon composite piece has a surface that is complementary to a surface of said first carbon-carbon composite piece; providing a layer of a mixture of titanium powder and carbon powder on the first complementary mating surface; arranging the second carbon-carbon composite piece on the powder layer such that the second complementary mating surface is matched to the first complementary mating surface, thereby forming a construct of the first carbon-carbon composite piece, the powder layer, and the second carbon-carbon composite piece; placing the construct into a press and applying pressure to the construct to press together the two pieces joined at their complementary surfaces; and applying an electrical current to the powder in the construct to initiate an oxidation-reduction reaction, thereby bonding the carbon-carbon composite pieces together. The titanium powder particles may be from 25 to 250 microns in diameter, and the carbon powder (e.g., graphite particles) may be 1 to 10 microns in diameter.

    摘要翻译: 将碳 - 碳复合材料片连接在一起的方法,例如 在飞机制动盘的翻新。 该方法包括以下步骤:提供第一碳 - 碳复合片和第二碳 - 碳复合片,其中所述第二碳 - 碳复合片具有与所述第一碳 - 碳复合片的表面互补的表面; 在第一互补配合表面上提供钛粉末和碳粉末的混合物层; 将第二碳 - 碳复合片布置在粉末层上,使得第二互补配合表面与第一互补配合表面匹配,由此形成第一碳 - 碳复合片,粉末层和第二碳 - 碳复合片的构造, 碳复合片; 将构造物放置在压力机中并向构件施加压力以将在其互补表面处接合的两个块压在一起; 并向构件中的粉末施加电流以引发氧化还原反应,从而将碳 - 碳复合材料片粘合在一起。 钛粉末颗粒的直径可以为25至250微米,碳粉末(例如石墨颗粒)的直径可以为1至10微米。