Carbonaceous composite material and sliding member using the same

Abstract:

The present invention relates to a carbonaceous composite material that can fully produce the characteristic effect of the graphite fluoride containing carbonaceous composite material with a minimum additive ratio of graphite fluoride and simultaneously can produce the secondary corrosion inhibiting properties and to a sliding member using the same. The carbonaceous composite material of the present invention features in that it contains graphite fluoride; and alkaline agent for neutralization of hydrogen fluoride or adsorbent for fixation of hydrogen fluoride, the remainder being carbonaceous components. The sliding member of the invention is the one made by using the carbonaceous composite material of the invention. Specifically, the carbonaceous composite material of the invention is applicable to an electric sliding brush, a mechanical sealing member, a bearing member and the like.

Citations

3717576 3776845 4333977 4626365 4655944 5089154

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Claims:

What is claimed is:

1. A composition comprising an epoxy resin, graphite, graphite fluoride and an alkaline agent which neutralizes hydrogen fluoride.

2. The composition of claim 1, wherein said alkaline agent and said graphite fluoride are present in substantially equal amounts.

3. The composition claim 1, wherein said alkaline agent is selected from the group consisting of alkali metal oxides, alkali metal hydroxides, alkali earth metal oxides and alkali earth metal hydroxides.

4. The composition of claim 3, wherein said alkaline agent is selected from the group consisting of lithium oxide, calcium oxide, lithium hydroxide, and calcium hydroxide.

5. The composition of claim 1, wherein said graphite fluoride is in an amount of not more than 1.0 mass %.

6. A composition comprising an epoxy resin, graphite, graphite fluoride and an adsorbent for fixation of hydrogen fluoride.

7. The composition of claim 6, wherein said adsorbent and said graphite fluoride are present in substantially equal amounts.

8. The composition of claim 6, wherein said absorbent is a alkali metal fluoride or an alkali earth metal fluoride.

9. The composition of claim 8, wherein said absorbent is sodium fluoride.

10. The composition of claim 6, wherein said graphite fluoride is in an amount of not more than 1.0 mass %.

11. A sliding member comprising the composition of claim 1.

12. A sliding member comprising the composition of claim 6.

13. An electric sliding brush comprising the composition of claim 1.

14. An electric sliding brush comprising the composition of claim 6.

15. A mechanical sealing member comprising the composition of claim 1.

16. A mechanical sealing member comprising the composition of claim 6.

17. A bearing comprising the composition of claim 1.

18. A bearing comprising the composition of claim 6.

19. A method of making a sliding member comprising forming the composition of claim 1 into said sliding member.

20. A method of making an electric sliding brush comprising forming the composition of claim 1 into said electric sliding brush.

21. A method of making a mechanical sealing member comprising forming the composition of claim 1 into said mechanical sealing member.

22. A method of making a bearing comprising forming the composition of claim 1 into said bearing.

23. A method of making a sliding member comprising forming the composition of claim 6 into said sliding member.

24. A method of making an electric sliding brush comprising forming the composition of claim 6 into said electric sliding brush.

25. A method of making a mechanical sealing member comprising forming the composition of claim 6 into said mechanical sealing member.

26. A method of making a bearing comprising forming the composition of claim 1 into said bearing.

Patent number:
6228814
View patent at USPTO

Filing date:
February 1, 2000

Issue date:
May 8, 2001

Inventors:
Arai Miyoji (Mitoyo-gun, JP)
Watanabe Nobuatsu (Nagaokakyo, JP)
Murata Tadashi (Mitoyo-gun, JP)
Tojo Tetsuro (Mitoyo-gun, JP)
Miyatani Toshiyuki (Mitoyo-gun, JP)

Assignee:
Toyo Tanso Co., Ltd. (Osaka, JP)

Primary Examiner:
Jacqueline V. Howard

Attorney, Agent or Firm:
Oblon, Spivak, McClelland, Maier & Neustadt, P.C.

Current U.S. Classification: 508/106 508/109 508/112 508/129