公开(公告)号：US09359479B2

公开(公告)日：2016-06-07

申请号：US13905732

申请日：2013-05-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Slawomir Rubinsztajn ,  Matthew Hal Littlejohn ,  Ryan Christopher Mills ,  Peter Kennedy Davis

IPC: C01B31/36 ,  C08G77/54 ,  C04B35/622 ,  C08G77/60 ,  C08G77/62 ,  C04B35/626 ,  D01F9/10

CPC classification number: C08G77/54 ,  C01B32/956 ,  C04B35/62281 ,  C04B35/62295 ,  C04B35/6269 ,  C04B2235/3409 ,  C04B2235/483 ,  C04B2235/5264 ,  C04B2235/9661 ,  C08G77/60 ,  C08G77/62 ,  D01F9/10

Abstract: The present disclosure generally relates to methods of using boron-containing additives for crosslinking polysilazane green fibers, which are precursors to silicon carbide fibers. These methods provide a controllable process for crosslinking silicon carbide fibers while providing a simple way for the introduction of boron as a sintering aid into the polymer structure.

Abstract translation: 本公开一般涉及使用含硼添加剂交联聚硅氮烷绿纤维的方法，聚硅氮烷绿纤维是碳化硅纤维的前体。 这些方法提供了一种用于交联碳化硅纤维的可控制法，同时提供了将硼作为烧结助剂引入聚合物结构中的简单方法。

公开(公告)号：US20200308066A1

公开(公告)日：2020-10-01

申请号：US16367884

申请日：2019-03-28

Applicant: General Electric Company

Inventor： Joseph John Shiang ,  Ryan Christopher Mills ,  Jared Hogg Weaver

IPC: C04B35/80 ,  C04B41/45 ,  C04B41/50 ,  C04B35/638 ,  C04B35/634

Abstract: CMC articles and methods for forming CMC articles are provided. In one example aspect, a method for forming a CMC article includes forming a CMC preform defining a first section and a second section. The first section has one or more plies that include sacrificial fibers. The second section of the CMC preform does not include sacrificial fibers. The first and second sections can be laid up to form the CMC prior to thermally processing, e.g., consolidation, firing, and infiltration. When the CMC preform is fired or burned out, the sacrificial fibers are removed or decomposed resulting in formation of channels within the first section of the pyrolyzed CMC preform. The channels are used as gas transport paths during chemical vapor infiltration to facilitate infiltration of a gaseous infiltrant into the fired CMC preform. The channels are then backfilled with a liquid infiltrant during a melt infiltration process.

公开(公告)号：US09587331B2

公开(公告)日：2017-03-07

申请号：US14193158

申请日：2014-02-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Ryan Christopher Mills ,  Peter Kennedy Davis ,  Matthew Hal Littlejohn ,  Slawomir Rubinsztajn

IPC: D01F11/08 ,  C04B35/571 ,  C04B35/622 ,  C04B35/626 ,  C04B35/628 ,  C08G77/62 ,  D01F9/10 ,  C08J3/24 ,  D01D10/02 ,  D01F6/94

CPC classification number: D01F11/08 ,  C04B35/571 ,  C04B35/62281 ,  C04B35/6269 ,  C04B35/62844 ,  C04B2235/444 ,  C04B2235/483 ,  C04B2235/5264 ,  C04B2235/666 ,  C08G77/62 ,  C08J3/243 ,  C08J2383/16 ,  D01D10/02 ,  D01F6/94 ,  D01F9/10 ,  D10B2331/30

Abstract: Disclosed herein are methods of curing silicon carbide precursor polymer fibers, such as polysilazanes, using moisture and free radical generators, such as peroxides. Also disclosed are methods of forming, curing, and using silicon carbide precursor polymers that contain alkenyl groups and free radical generators, such as peroxides.

Abstract translation: 本文公开了使用水分和自由基发生剂如过氧化物固化碳化硅前体聚合物纤维如聚硅氮烷的方法。 还公开了形成，固化和使用含有烯基的碳化硅前体聚合物和自由基发生剂如过氧化物的方法。

公开(公告)号：US10508056B1

公开(公告)日：2019-12-17

申请号：US15096495

申请日：2016-04-12

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Anthony Yu-Chung Ku ,  Gary C. Buczkowski ,  Ryan Christopher Mills ,  Peter Kennedy Davis

IPC: C04B35/571 ,  D01F9/10 ,  C01B32/956 ,  C04B35/622

Abstract: Disclosed herein are methods of forming substantially crystalline, dense silicon carbide fibers from infusible polysilazane fibers by utilizing a single stage pyrolysis. The pyrolysis is performed using a continuous process in a single furnace with a constant atmospheric condition. Also disclosed are substantially crystalline, dense silicon carbide fibers formed by these methods.

公开(公告)号：US09593210B1

公开(公告)日：2017-03-14

申请号：US15135604

申请日：2016-04-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Slawomir Rubinsztajn ,  Eric James Pressman ,  Ryan Christopher Mills ,  Peter Kennedy Davis

IPC: C08G77/62 ,  C04B35/622 ,  C09D183/14

CPC classification number: C08G77/62 ,  C04B35/62281 ,  C04B35/62295 ,  C04B2235/483 ,  C04B2235/5264 ,  C04B2235/9661 ,  C08K5/5442 ,  C08L83/16 ,  C09D183/14 ,  C09D183/16

Abstract: Methods of producing low-halogen-containing polysilazane resins, which are used to make silicon carbide fibers and ceramic coatings, provide processes for removing halogens, including chlorine, from precursor polysilazane resins.

Abstract translation: 用于制造碳化硅纤维和陶瓷涂层的生产低卤素聚硅氮烷树脂的方法提供从前体聚硅氮烷树脂中除去包括氯在内的卤素的方法。