【摘要】 微孔聚酰亚胺材料用作球轴承保持器已在航空工业界引起重视。这种新材料最重要的特征在于其微孔性织态结构。它具有较好的含油能力,使运动中的轴承始终处于良好的润滑条件下。 本文报道用双马来酰亚胺共聚物制备轴承保持器的研究工作,并讨论包括分级、混合在内的制粉工艺和坯料的制备工艺对保持器总孔容和孔隙度分布的影响。更多还原

【Abstract】 Porous polyimide materials used for ball-bearing retainers have been recieved a great attention in aviation industry. The most important structure featrue of this newly deveolped material lies in its micro-porous texture, which makes it possible to contain sufficent oil and thus keep fine lubricat condition inside the bearing when it is running.This paper reports our research work about the preparation of this micro-porous material, the effects of the powder preparing techniques, including the classification and the mix of the particals. The billet molding process on the total pore volume and the pore size distribution of the retainer material are also discussed.更多还原