发明授权
- 专利标题: Conductive lubricant for magnetic disk drives
- 专利标题(中): 磁盘驱动器导电润滑剂
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申请号: US680557申请日: 1996-07-09
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公开(公告)号: US5886854A公开(公告)日: 1999-03-23
- 发明人: Arthur Fred Diaz , Robert D. Johnson , Thomas Edward Karis , Holavanahally S. Nagaraj , My Thanh Nguyen
- 申请人: Arthur Fred Diaz , Robert D. Johnson , Thomas Edward Karis , Holavanahally S. Nagaraj , My Thanh Nguyen
- 申请人地址: NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: NY Armonk
- 主分类号: C08G73/02
- IPC分类号: C08G73/02 ; C10M135/10 ; C10M149/22 ; C10M169/00 ; F16C33/10 ; G11B19/20 ; G11B33/14 ; H01B1/12 ; C08G73/00 ; C08L79/02
摘要:
An improved disk drive system using a non-ferrofluid conductive lubricant is disclosed. In the disk drive system, there is a plurality of critically spaced magnetic disks rotated by a disk motor. A spindle shaft, which is retained by the spindle sleeve, couples to the disk motor and to the plurality of magnetic disks for rotation. The spindle shaft and spindle sleeve uses a bearing, which is lubricated by a non-ferrofluid conductive lubricant. The lubricant is used to prevent electrostatic charge build up during operation of the disk drive system. The lubricant may be either a non-polar oil or a ball bearing grease and further having either a metal caged fullerenes compound, STADIS-450, ASA-3, or Polyfloe 130. One particular type of lubricant is an emeraldine salt of polyanilin produced according to the steps of first reacting a solution of HCL and ammonium persulfate into a solution of HCL and analine to form a polymer. Next, the polymer is mixed with ammonium hydroxide and then is prepared to have a molecular weight of 1,000-20,000. Finally, the polymer is mixed with dodecyl benzylsulfonc acid or camphor sulfonic acid until the emeraldine salt is formed.
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