Sliding material comprising fluorine plastic and binder resin

Abstract

The sliding properties of a sliding material which comprises fluorine-plastic and binder resin are improved, such that it withstands high speed and high load and varying sliding conditions from the lubricating-oil free condition to the lubricating-oil condition and vice versa. A novel sliding material comprises fluorine-plastic particles having a flat ratio of from 1.5 to 10 in terms of an average aspect ratio and binder resin.

1 . Sliding material, which comprises fluorine-plastic particles having a flat ratio of from 1.5 to 10 in terms of an average aspect ratio and binder resin.  
   
   
       2 . Sliding material according to  claim 1 , wherein said fluorine-plastic is at least one selected from the group consisting of polytetrafluoroethylen (PTFE), tetrafluoroethylene perfluoroalkoxy vinyl ether copolymer(PFA), perfluoroethylene propylene tetrafluoroethylenen hexafluoropylene(FEP), ethylene-tetrafluoroethylene copolymer (ETFE), polyvinyldenefluoride (PVdF), and ethylene-chlorotrifluoroethylene copolymer (ECTFE).  
   
   
       3 . Sliding material according to  claim 1 , wherein said fluorine-plastic particles are the calcined fluorine plastic, which has from 2 to 20 μm of average particle diameter and which is then crushed.  
   
   
       4 . Sliding material according to  claim 1 , wherein said binder resin is at least one selected from the group consisting of polyamide imide and polyimide.  
   
   
       5 . Sliding material according to  claim 2  consisting of from 5 to 40% by volume of said fluorine plastic particles and from 95 to 60% by volume of said resin binder in balance.  
   
   
       6 . Sliding material according to  claim 1 , further comprising from 2 to 40% by volume of a solid lubricant selected from the group consisting of MoS 2  and graphite, the balance being said fluorine-plastic particles and said binder resin in an amount of from 98 to 60% by volume.  
   
   
       7 . Sliding material according to  claim 1 , further comprising from 0.1 to 5.0% by volume of a wear-resistant additive selected from the group consisting of SiO 2 , TiO 2 , SiC and Al 2 O 3 , the balance being said fluorine-plastic particles and said binder resin in an amount of from 99.1 to 95.0% by volume.  
   
   
       8 . Sliding material according to  claim 1 , further comprising from 2 to 40% by volume of a solid lubricant, and from 0.1 to 5.0% by volume of a wear-resistant additive selected from the group consisting of SiO 2 , TiO 2 , SiC and Al 2 O 3 , the balance being said fluorine plastic and said binder resin.  
   
   
       9 . Sliding material according to  claim 1 , deposited on a sliding portion of a swash plate of a swash-plate type compressor.