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1. 发明授权

US4981752A Formation of melt-spun acrylic fibers which are well suited for thermal conversion to high strength carbon fibers 失效
标题翻译：形成非常适合热转化为高强度碳纤维的熔喷丙烯酸纤维
公开(公告)号：US4981752A
公开(公告)日：1991-01-01
申请号：US498605
申请日：1990-03-26
申请人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young , Maurice M. Zwick
发明人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young , Maurice M. Zwick
IPC分类号： D01D5/16 , D01F6/18 , D01F9/22
CPC分类号： D01F9/22 , D01D5/16 , D01F6/18 , Y10T428/249921 , Y10T428/2973 , Y10T428/30 , Y10T442/624
摘要： An acrylic multifilamentary material possessing an internal structure which is well suited for thermal conversion to high strength carbon fibers is formed via a specifically defined combination of processing conditions. The acrylic polymer while in substantially homogeneous admixture with appropriate concentrations (as defined) of C.sub.1 to C.sub.2 nitroalkane and water is melt extruded and is drawn at a relatively low draw ratio which is substantially less than the maximum draw ratio achievable. During the melt extrusion a C.sub.1 to C.sub.4 monohydroxy alkanol preferably also is present in the substantially homogenous admixture. The fibrous material which is capable of readily undergoing drawing next is passed through a heat treatment zone wherein the evolution of residual nitroalkane, monohydroxy alkanol and water takes place. The resulting fibrous material following such heat treatment is subjected to additional drawing to accomplish further orientation and internal structure modification and to produce a fiberous material of the appropriate denier for carbon fiber production. One accordingly is provided a reliable route to form a fibrous acrylic precursor for carbon fiber production without the necessity to employ the solution-spinning routes commonly utilized in the prior art for precursor formation. One can now eliminate the utilization and handling of large amounts of solvent as has heretofore been necessary when forming an acrylic carbon fiber precursor. Also, acrylic fiber precursors possessing a wide variety of cross-sectional configurations now are made possible which can be thermally converted into carbon fibers of a similar cross-sectional configuration.
摘要翻译：具有非常适合热转化为高强度碳纤维的内部结构的丙烯酸复丝材料通过具体限定的加工条件的组合形成。将丙烯酸聚合物以适当浓度（如定义）C1至C2硝基烷烃和水基本均匀的混合物熔融挤出并以相对低的拉伸比拉伸，其实质上小于可实现的最大拉伸比。在熔融挤出期间，C1至C4单羟基链烷醇优选也存在于基本均匀的混合物中。能够容易地进行拉伸的纤维材料通过热处理区域，其中残留的硝基烷烃，单羟基链烷醇和水的发生发生。对这样的热处理后的所得纤维材料进行附加拉伸，以进一步进行取向和内部结构改性，并生产用于碳纤维生产的适当旦数的纤维材料。因此，提供了形成用于碳纤维生产的纤维状丙烯酸前体的可靠途径，而不需要使用现有技术中通常用于前体形成的溶液纺丝途径。现在可以消除在形成丙烯酸碳纤维前体时迄今为止所需的大量溶剂的利用和处理。而且，现在具有各种各样的横截面构造的丙烯酸纤维前体是可能的，其可被热转化成类似横截面构型的碳纤维。

2. 发明授权

US4933128A Formation of melt-spun acrylic fibers which are well suited for thermal conversion to high strength carbon fibers 失效
标题翻译：形成非常适合热转化为高强度碳纤维的熔喷丙烯酸纤维
公开(公告)号：US4933128A
公开(公告)日：1990-06-12
申请号：US375907
申请日：1989-07-06
申请人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young , Maurice M. Zwick
发明人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young , Maurice M. Zwick
IPC分类号： D01D5/12 , D01D5/16 , D01F6/18 , D01F6/38 , D01F9/22 , D02J1/22
CPC分类号： D01D5/16 , D01F6/18 , D01F9/22
摘要： An acrylic multifilamentary material possessing an internal structure which is well suited for thermal conversion to high strength carbon fibers is formed via a specifically defined combination of processing conditions. The acrylic polymer while in substantially homogeneous admixture with appropriate concentrations (as defined) of C.sub.1 to C.sub.2 nitroalkane and water is melt extruded and is drawn at a relatively low draw ratio which is substantially less than the maximum draw ratio achievable. During the melt extrusion a C.sub.1 to C.sub.4 monohydroxy alkanol preferably also is present in the substantially homogenous admixture. The fibrous material which is capable of readily undergoing drawing next is passed through a heat treatment zone wherein the evolution of residual nitroalkane, monohydroxy alkanol and water takes place. The resulting fibrous material following such heat treatment is subjected to additional drawing to accomplish further orientation and internal structure modification and to produce a fibrous material of the appropriate denier for carbon fiber production. One accordingly is provided a reliable route to form a fibrous acrylic precursor for carbon fiber production without the necessity to employ the solution-spinning routes commonly utilized in the prior art for precursor formation. One can now eliminate the utilization and handling of large amounts of solvent as has heretofore been necessary when forming an acrylic carbon fiber precursor. Also, acrylic fiber precursors possessing a wide variety of cross-sectional configurations now are made possible which can be thermally converted into carbon fibers of a similar cross-sectional configuration.

3. 发明授权

US4981751A Melt-spun acrylic fibers which are particularly suited for thermal conversion to high strength carbon fibers 失效
标题翻译：特别适用于热转化为高强度碳纤维的熔融丙烯酸纤维
公开(公告)号：US4981751A
公开(公告)日：1991-01-01
申请号：US498615
申请日：1990-03-26
申请人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young
发明人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young
IPC分类号： D01D5/08 , D01F6/18 , D01F9/22
CPC分类号： D01F6/18 , D01D5/08 , D01D5/253 , D01F9/22 , Y10T428/249921 , Y10T428/2973 , Y10T428/30 , Y10T442/624
摘要： An acrylic multifilamentary material possessing an internal structure which is particularly suited for thermal conversion to high strength carbon fibers is formed via a specifically defined combination of processing conditions. The acrylic polymer while in substantially homogeneous admixture with appropriate concentrations (as defined) of acetonitrile, C.sub.1 to C.sub.4 monohydroxy alkanol, and water is melt extruded and is drawn at a relatively low draw ratio which is substantially less than the maximum draw ratio achievable. This fibrous material which is capable of readily undergoing drawing is passed through a heat treatment zone wherein the evolution of residual acetonitrile, the monohydroxy alkanol and water takes place. The resulting fibrous material following such heat treatment is subjected to additional drawing to accomplish further orientation and internal structure modification and to produce a fibrous material of the appropriate denier for carbon fiber production. One accordingly is provided a reliable route to form a fibrous acrylic precursor for carbon fiber production without the necessity to employ the solution-spinning routes commonly utilized in the prior art for precursor formation. One can now eliminate the utilization and handling of large amounts of solvent as has heretofore been necessary when forming an acrylic carbon fiber precursor. Also, acrylic fiber precursors possessing a wide variety of cross-sectional configurations now are made possible which can be thermally converted into carbon fibers of a similar cross-sectional configuration.
摘要翻译：通过具体限定的加工条件的组合，形成具有特别适用于热转化为高强度碳纤维的内部结构的丙烯酸复丝材料。将丙烯酸聚合物以适当浓度（如定义）乙腈，C1至C4单羟基链烷醇和水基本均匀的混合物熔融挤出，并以相对较低的拉伸比拉伸，其实质上小于可实现的最大拉伸比。能够容易地进行拉伸的这种纤维材料通过热处理区域，其中残留乙腈，单羟基链烷醇和水的发生发生。进行这种热处理后的所得纤维材料进行额外的拉伸以完成进一步的取向和内部结构改性，并生产用于碳纤维生产的合适旦数的纤维材料。因此，提供了形成用于碳纤维生产的纤维状丙烯酸前体的可靠途径，而不需要使用现有技术中通常用于前体形成的溶液纺丝途径。现在可以消除在形成丙烯酸碳纤维前体时迄今为止所需的大量溶剂的利用和处理。而且，现在具有各种各样的横截面构造的丙烯酸纤维前体是可能的，其可被热转化成类似横截面构型的碳纤维。

4. 发明授权

US5168004A Melt-spun acrylic fibers possessing a highly uniform internal structure which are particularly suited for thermal conversion to quality carbon fibers 失效
标题翻译：熔融丙烯酸纤维具有高度均匀的内部结构，特别适用于高质量碳纤维的热转化
公开(公告)号：US5168004A
公开(公告)日：1992-12-01
申请号：US498693
申请日：1990-03-26
申请人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young
发明人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young
IPC分类号： D01D5/08 , D01F6/18 , D01F9/22
CPC分类号： D01F6/18 , D01D5/08 , D01F9/22 , Y10T428/249921 , Y10T428/2913 , Y10T428/2918 , Y10T428/2973 , Y10T428/30 , Y10T442/638 , Y10T442/68
摘要： An acrylic multifilamentary material possessing an internal structure which is particularly suited for thermal conversion to high strength carbon fibers is formed via a specifically defined combination of processing conditions. The acrylic polymer while in substantially homogeneous admixture with appropriate concentrations (as defined) of acetonitrile and water is melt extruded and is drawn at a relatively low draw ratio which is substantially less than the maximum draw ratio achievable. This fibrous material which is capable of readily undergoing drawing is passed through a heat treatment zone wherein the evolution of residual acetonitrile and water takes place. The resulting fibrous material following such heat treatment is subjected to additional drawing to accomplish further orientation and internal structure modification and to produce a fibrous material of the appropriate denier for carbon fiber production. One accordingly is provided a reliable route to form a fibrous acrylic precursor for carbon fiber production without the necessity to employ the solution-spinning routes commonly utilized in the prior art for precursor formation. One can now eliminate the utilization and handling of large amounts of solvent as has heretofore been necessary when forming an acrylic carbon fiber precursor. Also, acrylic fiber precursors possessing a wide varity of cross-sectional configurations and a highly uniform internal structure now are made possible which can be thermally converted into carbon fibers of a similar cross-sectional configuration which are substantially void free when examined in cross secton at a magnification of 2,000.times..
摘要翻译：通过具体限定的加工条件的组合，形成具有特别适用于热转化为高强度碳纤维的内部结构的丙烯酸复丝材料。将丙烯酸聚合物以适当浓度（如所定义的）乙腈和水基本上均匀的混合物熔融挤出并以相对低的拉伸比拉伸，其实质上小于可实现的最大拉伸比。能够容易地进行拉伸的这种纤维材料通过热处理区域，其中残留的乙腈和水的发生发生。进行这种热处理后的所得纤维材料进行额外的拉伸以完成进一步的取向和内部结构改性，并生产用于碳纤维生产的合适旦数的纤维材料。因此，提供了形成用于碳纤维生产的纤维状丙烯酸前体的可靠途径，而不需要使用现有技术中通常用于前体形成的溶液纺丝途径。现在可以消除在形成丙烯酸碳纤维前体时迄今为止所需的大量溶剂的利用和处理。此外，具有宽的横截面构型和高度均匀的内部结构的丙烯酸纤维前体现在成为可能，其可以被热转化成类似横截面构造的碳纤维，当在十字形剖面中检查时，它们基本上无空隙放大2000倍。

5. 发明授权

US4935180A Formation of melt-spun acrylic fibers possessing a highly uniform internal structure which are particularly suited for thermal conversion to quality carbon fibers 失效
标题翻译：形成具有高度均匀的内部结构的熔喷丙烯酸纤维，其特别适合于热转化为优质碳纤维
公开(公告)号：US4935180A
公开(公告)日：1990-06-19
申请号：US236186
申请日：1988-08-25
申请人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young
发明人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young
IPC分类号： D01D5/08 , D01D5/253 , D01F6/18 , D01F9/22
CPC分类号： D01F9/22 , D01D5/08 , D01F6/18
摘要： An acrylic multifilamentary material possessing an internal structure which is particularly suited for thermal conversion to high strength carbon fibers is formed via a specifically defined combination of processing conditions. The acrylic polymer while in substantially homogeneous admixture with appropriate concentrations (as defined) of acetonitrile and water is melt extruded and is drawn at a relatively low draw ratio which is substantially less than the maximum draw ratio achievable. This fibrous material which is capable of readily undergoing drawing is passed through a heat treatment zone wherein the evolution of residual acetonitrile and water takes place. The resulting fibrous material following such heat treatment is subjected to additional drawing to accomplish further orientation and internal structure modification and to produce a fibrous material of the appropriate denier for carbon fiber production. One accordingly is provided a reliable route to form a fibrous acrylic precursor for carbon fiber production without the necessity to employ the solution-spinning routes commonly utilized in the prior art for precursor formation. One can now eliminate the utilization and handling of large amounts of solvent as has heretofore been necessary when forming an acrylic carbon fiber precursor. Also, acrylic fiber precursors possessing a wide variety of cross-sectional configurations and a highly uniform internal structure now are made possible which can be thermally converted into carbon fibers of a similar cross-sectional configuration which are substantially void free when examined in cross section at a magnification of 2,000X.

6. 发明授权

US4921656A Formation of melt-spun acrylic fibers which are particularly suited for thermal conversion to high strength carbon fibers 失效
标题翻译：特别适合热转化为高强度碳纤维的熔纺丙烯酸纤维的形成
公开(公告)号：US4921656A
公开(公告)日：1990-05-01
申请号：US236177
申请日：1988-08-25
申请人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young
发明人： Gene P. Daumit , Yoon S. Ko , Christopher R. Slater , Jozef G. Venner , Chi C. Young
IPC分类号： D01D5/08 , D01D5/253 , D01F6/18 , D01F9/22
CPC分类号： D01F6/18 , D01D5/08 , D01F9/22
摘要： An acrylic multifilamentary material possessing an internal structure which is particularly suited for thermal conversion to high strength carbon fibers is formed via a specifically defined combination of processing conditions. The acrylic polymer while in substantially homogeneous admixture with appropriate concentrations (as defined) of acetonitrile, C.sub.1 to C.sub.4 monohydroxy alkanol, and water is melt extruded and is drawn at a relatively low draw ratio which is substantially less than the maximum draw ratio achievable. This fibrous material which is capable of readily undergoing drawing is passed through a heat treatment zone wherein the evolution of residual acetonitrile, the monohydroxy alkanol and water takes place. The resulting fibrous material following such heat treatment is subjected to additional drawing to accomplish further orientation and internal structure modification and to produce a fibrous material of the appropriate denier for carbon fiber production. One accordingly is provided a reliable route to form a fibrous acrylic precursor for carbon fiber production without the necessity to employ the solution-spinning routes commonly utilized in the prior art for precursor formation. One can now eliminate the utilization and handling of large amounts of solvent as has heretofore been necessary when forming an acrylic carbon fiber precursor. Also, arcylic fiber precursors possessing a wide variety of cross-sectional configurations now are made possible which can be thermally converted into carbon fibers of a similar cross-sectional configuration.

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