Claims
- 1. A method of preparing a fluorine compound-containing composite material, which method comprises codepositing a metal film with polytetrafluoroethylene oligomer particles having a number average molecular weight of 10,000 or less onto an article to be plated, thereby obtaining a codeposited plating film consisting essentially of said particles dispersed in a metal matrix on said article, the proportion of the number of fluorine atoms to the number of the total atoms at the surface of the composite plating film being 40% or more, said codeposited plating film having a contact angle of 150.degree. or more.
- 2. The method of claim 1 wherein fluorine gas is contacted to the surface of the composite film.
- 3. The method of claim 1 wherein said surface is about 20 to 40 .ANG. thick.
- 4. The method of claim 3 wherein the amount of polytetrafluoroethylene oligomer particles in the codeposited plating film is in the range of from about 2 to about 50% by volume.
- 5. The method of claim 4 wherein said polytetrafluoroethylene oligomer particles have an average particle size of 0.1 to 150 .mu.m.
- 6. The method of claim 5 wherein said number average molecular weight is from 1,000 to 10,000.
- 7. The method of claim 6 wherein the proportion of the number of fluorine atoms to the number of the total atoms at the surface of the codeposited plating film is 40 to 60%.
- 8. The method of claim 7 wherein the codeposited plating film has a contact angle of 170.degree. to 180.degree..
Priority Claims (2)
Number |
Date |
Country |
Kind |
3-72444 |
Mar 1991 |
JPX |
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3-72445 |
Mar 1991 |
JPX |
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CROSS REFERENCE TO RELATED APPLICATION
This is a Continuation of application Ser. No. 08/457,474 filed Jun. 1, 1995 now abandoned, which is a Divisional of application Ser. No. 08/051,701 filed Apr. 23, 1993, now U.S. Pat. No. 5,589,271, which is a Continuation-in-Part of application Ser. No. 07/850,427 filed Mar. 12, 1992 (now abandoned).
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
A0403834 |
Dec 1990 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
051701 |
Apr 1993 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
457474 |
Jun 1995 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
850427 |
Mar 1992 |
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