公开(公告)号：US4354986A

公开(公告)日：1982-10-19

申请号：US156332

申请日：1980-06-04

申请人： Jacob W. Maczuga ,  Daniel C. Wilhelm

发明人： Jacob W. Maczuga ,  Daniel C. Wilhelm

IPC分类号： C01B21/064 ,  C03B37/04 ,  C04B35/622 ,  D01F9/08 ,  D04H1/46 ,  D04H1/56 ,  D04H18/00 ,  D04H18/02 ,  H01M2/14 ,  H01M2/16 ,  B29C6/00

CPC分类号： H01M2/145 ,  C01B21/064 ,  C03B37/04 ,  C04B35/62227 ,  D04H1/46 ,  D04H1/56 ,  D04H18/02 ,  H01M2/1613 ,  H01M2300/0048 ,  Y10S264/19

摘要： A process is disclosed for producing a non-woven, boron nitride fiber mat, suitable for use as an electric cell separator in a lithium-sulfide battery. Molten boron oxide is centrifugally spun into strands and attenuated by an annular gas stream into fibers which are compacted at a controlled relative humidity into a mat. The mat of fibers passes through a needler, which repeatedly drives arrays of needles into the mat from either one or both sides, to reorient and intertwine the fibers, producing additional mechanical bonds thereamong. The needled mat then is heated in an anhydrous ammonia atmosphere to convert boron oxide in the fibers into boron nitride (BN). In an alternate embodiment the boron oxide fibers within the mat are converted into boron nitride before being passed through the needler.

摘要翻译： 公开了一种用于生产适合用作硫化锂电池中的电池隔板的无纺氮化硼纤维垫的方法。 将熔融的氧化硼离心旋转成股线并通过环形气流减弱成在受控的相对湿度下压实成垫的纤维。 纤维垫通过针刺机，该针筒机将针头从一侧或两侧驱动到垫子中，以重新定向和缠绕纤维，从而在其间产生额外的机械粘合。 然后将针刺垫在无水氨气中加热，将纤维中的氧化硼转化为氮化硼（BN）。 在替代实施例中，垫中的氧化硼纤维在通过针刺机之前被转化成氮化硼。