公开(公告)号：EP3027804A4

公开(公告)日：2017-03-08

申请号：EP14833000

申请日：2014-07-25

Applicant: TORAY FLUOROFIBERS (AMERICA) INC

Inventor： MOON CHESTER DARRYL ,  NELSON ARTHUR RUSSELL ,  GULDSTRAND TREVOR ,  HUTTO MATT

IPC: D06M15/277 ,  D01D5/00 ,  D01F8/00 ,  D06M11/45

CPC classification number: C08K3/22 ,  C08K2003/2227 ,  C08L27/18 ,  C08L2201/08 ,  C08L2203/12 ,  D01D5/00 ,  D01D5/06 ,  D01F1/10 ,  D01F6/12

Abstract: A dispersion spun fluoropolymer fiber prepared from non-melt-processible polytetrafluoroethylene particles and aluminum oxide particles. The concentration of Al2O3 in the aqueous dispersion may range from between about 0.1% to about 5%, with specific concentration of 0.1%, 1.0. The aqueous dispersion is mixed with an aqueous matrix polymer solution containing a matrix polymer and then extruded into a coagulation bath containing a concentration of ions which coagulate the matrix polymer to form an intermediate fiber structure which carries ionic species. The intermediate fiber structure is sintered to decompose the matrix polymer and coalesce the polytetrafluoroethylene particles and the Al2O3 particles into a blended fiber. The resulting, blended fluoropolymer fiber exhibits improved properties relative to 100% dispersion spun polytetrafluoroethylene fibers.

Abstract translation: 从非可熔融加工的聚四氟乙烯颗粒和氧化铝颗粒制备的分散体的含氟聚合物纺丝纤维。 氧化铝在wässrige分散体中的浓度范围可从约0.1％至约5％，以0.1％，1.0特定浓度。 所述wässrige分散体与在wässrige基质聚合物溶液含有基质聚合物，然后挤出到凝固浴含有凝固基体聚合物以形成中间纤维结构承载的离子种类的离子的浓度混合。 所述中间纤维结构被烧结以分解基质聚合物和聚结聚四氟乙烯颗粒和氧化铝颗粒成混纺纤维。 把分散体所得，共混含氟聚合物纤维表现出改进的相对于100％纺丝的聚四氟乙烯纤维的特性。