Titanium carbide as a friction and wear modifier in friction materials
    1.
    发明授权
    Titanium carbide as a friction and wear modifier in friction materials 有权
    碳化钛作为摩擦材料中的摩擦和磨损改性剂

    公开(公告)号:US08858846B2

    公开(公告)日:2014-10-14

    申请号:US12410903

    申请日:2009-03-25

    摘要: Methods of making a carbon-carbon composite preforms, particularly suitable as brake discs in aircraft landing systems, by combining titanium carbide particles ranging in size from 0.01 to 10 microns in diameter, resinous binder, and carbon fibers or carbon fiber precursors in a mold, and subsequently subjecting the combined components to pressure and heat to carbonize the resinous binder by methods, thereby providing the carbon-carbon composite preform having particulate titanium carbide uniformly distributed throughout its mass. Prior to combining the titanium carbide and the binder with the fibers in this process, the particulate titanium carbide may be mixed with liquid binder, the resulting TiC/binder mixture may then solidified, and the resulting solid TiC/binder mixture may be ground into a fine powder for use in the process. Also, compositions for preparing a carbon-carbon composite friction materials, and methods of improving wear and dynamic stability in a carbon-carbon composite brake discs.

    摘要翻译: 通过将尺寸范围为0.01至10微米直径的碳化钛颗粒,树脂粘合剂和模具中的碳纤维或碳纤维前体组合制备碳 - 碳复合预制件,特别适用于飞机着陆系统中的制动盘的方法, 并随后使组合的组分进行加压和加热以通过方法使树脂粘合剂碳化,由此提供碳 - 碳复合预成型体,其中颗粒状碳化钛均匀地分布在其整个质量中。 在该方法中将碳化钛与粘合剂与纤维结合之前,可将颗粒碳化钛与液体粘合剂混合,然后使所得到的TiC /粘合剂混合物固化,并将所得固体TiC /粘合剂混合物研磨成 精细粉末用于该过程。 另外,用于制备碳 - 碳复合材料摩擦材料的组合物,以及改善碳 - 碳复合制动盘中的磨损和动态稳定性的方法。

    Pitch densification of carbon fiber preforms
    2.
    发明申请
    Pitch densification of carbon fiber preforms 审中-公开
    碳纤维预制棒的间距致密化

    公开(公告)号:US20100078839A1

    公开(公告)日:2010-04-01

    申请号:US11471602

    申请日:2006-06-21

    IPC分类号: C01B31/00

    摘要: A pitch densification process which is widely applicable in the densification of carbon fiber preforms and stabilized pitch fiber preforms. The process includes: (a.) introducing liquid pitch into a fibrous carbon preform; (b.) carbonizing the pitch-impregnated preform by heating it in the absence of oxidizing agents; and subsequently (c.) further densifying the carbonized pitch-impregnated preform. The pitch used for densification may be coal tar pitch, petroleum pitch, or synthetic pitch. The softening point of the pitch will normally range from 100° C. to 340° C., depending upon the properties to be imparted to the finished product.

    摘要翻译: 沥青密实化方法,广泛应用于碳纤维预成型体和稳定沥青纤维预制件的致密化。 该方法包括:(a)将液体沥青引​​入纤维状碳预制件中; (b)通过在不存在氧化剂的情况下加热沥青浸渍的预成型体来碳化沥青浸渍的预成型体; 并随后(c。)进一步致密化碳化沥青浸渍的预制件。 用于致密化的沥青可以是煤焦油沥青,石油沥青或合成沥青。 根据赋予成品的性质,沥青的软化点通常在100℃至340℃的范围内。

    Reusable core carbon-carbon composite brake disc
    3.
    发明申请
    Reusable core carbon-carbon composite brake disc 审中-公开
    可重复使用的碳碳复合制动盘

    公开(公告)号:US20100000070A1

    公开(公告)日:2010-01-07

    申请号:US11028719

    申请日:2005-01-04

    IPC分类号: B21J15/00 B32B37/02

    摘要: Method of manufacturing carbon-carbon composite brake disc comprising a dense reusable core. Preferably, the reusable core has a density of 1.8-2.05 g/cc. The method includes: forming a dense carbon-carbon composite core; positioning the dense core in a location within a carbon-carbon composite brake disc; and fixing the dense carbon-carbon composite core in place in its location within the carbon-carbon composite brake disc. It is economically advantageous to recover the dense core from a worn brake disc prior to positioning it in the brake disc. Also, an annular carbon-carbon composite brake disc made up of a friction surface containing 15-75 weight-% carbon-containing fibers and 25-85 weight-% resin binder and a dense carbon-carbon composite core comprising 40-75 weight-% carbon-containing fibers and 25-60 weight-% resin binder.

    摘要翻译: 制造碳 - 碳复合制动盘的方法,其包括密集的可重复使用的芯。 优选地,可重复使用的芯的密度为1.8-2.05g / cc。 该方法包括:形成致密的碳 - 碳复合芯; 将致密核心定位在碳 - 碳复合制动盘内的位置; 并将致密的碳 - 碳复合材料芯固定在碳 - 碳复合制动盘内的位置。 在将其定位在制动盘中之前,从磨损的制动盘回收致密的核心在经济上是有利的。 另外,由含有15-75重量%含碳纤维和25-85重量%树脂粘合剂的摩擦表面和一个含有40-75重量%的含碳纤维的密集碳 - 碳复合材料芯构成的环形碳 - 碳复合制动盘, %含碳纤维和25-60重量%树脂粘合剂。

    Pitch infiltration of carbon fiber preforms under high pressure
    4.
    发明授权
    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:US07632436B2

    公开(公告)日:2009-12-15

    申请号:US11455743

    申请日:2006-06-20

    IPC分类号: C01B31/00

    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。

    Formulation for the manufacture of carbon-carbon composite materials
    5.
    发明授权
    Formulation for the manufacture of carbon-carbon composite materials 有权
    制造碳 - 碳复合材料的配方

    公开(公告)号:US07438839B2

    公开(公告)日:2008-10-21

    申请号:US10956582

    申请日:2004-10-01

    IPC分类号: B29C43/02

    摘要: Method for manufacturing a carbonized carbon-carbon composite preform, by: mixing (a) chopped carbon fiber, chopped stabilized pitch fiber, or chopped oxidized polyacrylonitrile (PAN) fiber, (b) thermoplastic pitch binder powder, and (c) activated carbon powder to form a mixture of 15-60 parts by weight of chopped carbon fiber or chopped stabilized pitch fiber or chopped oxidized PAN, 28-83 parts by weight of thermoplastic pitch binder powder, and 1-12 parts by weight of activated carbon powder; depositing this mixture into a mold; pressing/heating the materials in the mold to form a preform by compaction; removing the compacted preform from the mold; and carbonizing the compacted preform. The preform is preferably configured in the form of an aircraft landing system brake disc.

    摘要翻译: 通过以下方法制备碳化碳 - 碳复合预型体:(a)将短切碳纤维,短切稳定沥青纤维或短切的氧化聚丙烯腈(PAN)纤维,(b)热塑性沥青粘合剂粉末和(c)活性炭粉末 形成15-60重量份短切碳纤维或短切稳定沥青纤维或短切氧化PAN,28-83重量份热塑性沥青粘合剂粉末和1-12重量份活性炭粉末的混合物; 将该混合物沉积到模具中; 压制/加热模具中的材料以通过压实形成预制件; 从模具中移除压实的预成型件; 并将压实的预制件碳化。 预成型件优选地以飞机着陆系统制动盘的形式配置。

    Method of increasing friction material utilization for carbon brakes
    6.
    发明授权
    Method of increasing friction material utilization for carbon brakes 有权
    增加碳制动器摩擦材料利用率的方法

    公开(公告)号:US07104366B2

    公开(公告)日:2006-09-12

    申请号:US10316636

    申请日:2002-12-11

    IPC分类号: F16D55/36

    摘要: A method of increasing carbon disc utilization in aircraft carbon brakes. A brake (10) is initially assembled with a heat stack (16) of alternating thick rotors (R1–R4) and thin stators (S1–S3). When the piston (20) is fully extended, it is retracted and a spacer (30) is inserted between the piston (20) and the original heat stack (16). The brake (10) is then subjected to a another half tour. After this half tour, the brake (10) is overhauled, and the now-thin discs (S1–S3, PP and BP) are replaced with thick discs to form another heat stack (50). For the next half tour, no spacer is used between the piston (20) and the heat stack (50). At the end of this half tour and the piston (20) is fully extended, a spacer (70) is inserted between the piston (20) and the heat stack (50). The heat stack (50) remains unchanged. For the next half tour, it is accomplished with the spacer (70). When this half tour is completed, the worn out rotors are replaced with new thick rotors and the process can be repeated.

    摘要翻译: 增加飞机碳制动器碳盘利用率的方法。 制动器(10)最初装配有交替的厚转子(R 1 -R 4)和薄定子(S 1 -S 3)的热堆(16)。 当活塞(20)完全伸出时,它被缩回并且间隔件(30)插入在活塞(20)和原始热堆(16)之间。 然后制动器(10)进行另一半行程。 在该半旅程之后,大修制动器(10),并且用厚盘替换现在薄的盘(S 1 -S 3,PP和BP)以形成另一个热堆叠(50)。 在下一个半程中,在活塞(20)和热堆(50)之间没有间隔件。 在该半行程结束时,活塞(20)完全延伸,间隔件(70)插入在活塞(20)和热堆(50)之间。 热堆(50)保持不变。 对于下一个半旅游,它是用垫片(70)完成的。 当这个半旅行完成后,磨损的转子被新的厚转子代替,并且可以重复该过程。

    Pitch infiltration of carbon fiber preforms under high pressure
    10.
    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。