Sliding member for sheet-shaped recording material detachment, seal ring for automobile, and seal ring and sliding member for industrial gas compressor

Patent metadata

Field	Value
Publication number	US-9388009-B2
Application number	US-201113989520-A
Country	US
Kind code	B2
Filing date	Nov 10, 2011
Priority date	Nov 24, 2010
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

An objective of the present invention is to provide a sliding member for sheet-shaped recording material detachment having superior resistance to abrasion and superior heat resistant rigidity, and either a seal ring for an automobile or a seal ring or a sliding member for an industrial gas compressor, having high mechanical strength while ensuring flexibility. The objective is achieved with a sliding member for sheet-shaped recording material detachment, and either a seal ring for an automobile or a seal ring or a sliding member for an industrial gas compressor, made from a resin composite comprising: as a first element, either an adhesive fluorocarbon resin (A) or a resin compound of the resin (A) and a fluorocarbon resin (B) which differs from the resin (A), which are in a volumetric ratio (AB) of 5/95 to 99/1; and as a second element, 0.5 to 99 volume % of a thermoplastic polyimide (C).

First claim

The invention claimed is:

1. A sliding member for sheet-shaped recording material detachment comprising:
as a first element, a resin composite containing either an adhesive fluorocarbon resin (A) or a resin compound of the resin (A) and a fluorocarbon resin (B) which differs from the resin (A),
which are in a volumetric ratio (AB) of 5/95 to 99/1; and
as a second element, 0.5 to 99 volume % of a thermoplastic polyimide (C), wherein the adhesive fluorocarbon resin (A) is a fluorine containing copolymer containing a first repeating unit based on tetrafluoroethylene, a second repeating unit based on a cyclic hydrocarbon monomer having a dicarboxylic anhydride group and a polymerizable unsaturated group in a ring, and a third repeating unit based on another monomer, and the first repeating unit is 50 to 99.89 mol %, the second repeating unit is 0.01 to 5 mol %, and the third repeating unit is 0.1 to 49.99 mol % based on a total molar amount of the first repeating unit, the second repeating unit, and the third repeating unit,
the fluorine containing copolymer has compatibility with the thermoplastic polyimide (C), and
the sliding member is an injection molded article of a molten and kneaded mixture of the resin composite.

2. The sliding member for sheet-shaped recording material detachment according to claim 1 , wherein the resin composite contains an additive in a proportion of 50 volume % or lower.

3. The sliding member for sheet-shaped recording material detachment according to claim 2 , wherein a total of a volumetric ratio of each of the resin (A) or the resin compound, the thermoplastic polyimide (C), and the additive is 100 volume %.

4. The sliding member for sheet-shaped recording material detachment according to claim 1 , wherein the adhesive fluorocarbon resin (A) contains at least one functional group selected from the group consisting of an acid anhydride group, a carboxy group, an acid halide group, and a carbonate group.

5. The sliding member for sheet-shaped recording material detachment according to claim 1 , wherein
the adhesive fluorocarbon resin (A) and the fluorocarbon resin (B) are injection moldable resins, and
a content of the thermoplastic polyimide (C) is 0.5 to 50 volume %.

6. The sliding member for sheet-shaped recording material detachment according to claim 5 , wherein the resin composite contains at least one selected from the group consisting of a fiber-like substance, a whisker-like substance, and a particle-like substance as the additive in a proportion of 0.1 to 30 volume %.

7. The sliding member for sheet-shaped recording material detachment according to claim 5 , wherein the average dispersion particle diameter of the thermoplastic polyimide (C) is 10 μm or lower.

8. The sliding member for sheet-shaped recording material detachment according to claim 5 , wherein a water droplet contact angle of a surface is 90° or more.

9. The sliding member for sheet-shaped recording material detachment according to claim 1 , wherein the second repeating unit is 0.1 to 1 mol % based on a total molar amount of the first repeating unit, the second repeating unit, and the third repeating unit.

10. A composite, comprising:
as a first element, a resin composite containing either an adhesive fluorocarbon resin (A) or a resin compound of the resin (A) and a fluorocarbon resin (B) which differs from the resin (A),
which are in a volumetric ratio (A/B) of 5/95 to 99/1; and
as a second element, 0.5 to 99 volume % of a thermoplastic polyimide (C),
wherein the adhesive fluorocarbon resin (A) is a fluorine containing copolymer containing a first repeating unit based on tetrafluoroethylene, a second repeating unit based on a cyclic hydrocarbon monomer having a dicarboxylic anhydride group and a polymerizable unsaturated group in a ring, and a third repeating unit based on another monomer, and the first repeating unit is 50 to 99.89 mol %, the second repeating unit is 0.01 to 5 mol %, and the third repeating unit is 0.1 to 49.99 mol % based on a total molar amount of the first repeating unit, the second repeating unit, and the third repeating unit,
the fluorine containing copolymer has compatibility with the thermoplastic polyimide (C), and
the resin composite is meltable and kneadable, and is injection moldable.

11. The composite according to claim 10 , wherein the resin composite contains an additive in a proportion of 50 volume % or lower.

12. The composite according to claim 11 , wherein a total of a volumetric ratio of each of the resin (A) or the resin compound, the thermoplastic polyimide (C), and the additive is 100 volume %.

13. The composite according to claim 10 , wherein the adhesive fluorocarbon resin (A) contains at least one functional group selected from the group consisting of an acid anhydride group, a carboxy group, an acid halide group, and a carbonate group.

14. The composite according to claim 10 , wherein
the adhesive fluorocarbon resin (A) and the fluorocarbon resin (B) are injection moldable resins, and a content of the thermoplastic polyimide (C) is 0.5 to 50 volume %.

15. The composite according to claim 14 , wherein the resin composite contains at least one selected from the group consisting of a fiber-like substance, a whisker-like substance, and a particle-like substance as the additive in a proportion of 0.1 to 30 volume %.

16. The composite according to claim 14 , wherein the average dispersion particle diameter of the thermoplastic polyimide (C) is 10 μm or lower.

17. The composite according to claim 14 , wherein a water droplet contact angle of a surface is 90° or more.

18. The composite according to claim 10 , comprising the thermoplastic polyimide (C) in a proportion of 1 to 99 volume %.

19. The composite according to claim 10 , wherein the second repeating unit is 0.1 to 1 mol % based on a total molar amount of the first repeating unit, the second repeating unit, and the third repeating unit.

20. A seal ring for an automobile comprising:
as a first element, a resin composite containing either an adhesive fluorocarbon resin (A) or a resin compound of the resin (A) and a fluorocarbon resin (B) which differs from the resin (A), which are in a volumetric ratio (A/B) of 5/95 to 99/1; and
as a second element, 0.5 to 99 volume % of a thermoplastic polyimide (C),
wherein the adhesive fluorocarbon resin (A) is a fluorine containing copolymer containing a first repeating unit based on tetrafluoroethylene, a second repeating unit based on a cyclic hydrocarbon monomer having a dicarboxylic anhydride group and a polymerizable unsaturated group in a ring, and a third repeating unit based on another monomer, and the first repeating unit is 50 to 99.89 mol %, the second repeating unit is 0.01 to 5 mol %, and the third repeating unit is 0.1 to 49.99 mol % based on a total molar amount of the first repeating unit, the second repeating unit, and the third repeating unit,
the fluorine containing copolymer has compatibility with the thermoplastic polyimide (C), and
the seal ring is an injection molded article of a molten and kneaded mixture of the resin composite.

21. The seal ring for an automobile according to claim 20 ,
wherein the resin composite contains an additive in a proportion of 50 volume % or lower.

22. The seal ring for an automobile according to claim 21 ,
wherein a total of a volumetric ratio of each of the resin (A) or the resin compound, the thermoplastic polyimide (C), and the additive is 100 volume %.

Assignees

• Nishi Eiichi
• Sato Takashi
• Uejima Hiroyoshi
• Ichikawa Tomokazu
• Hashimoto Toru
• Kikutani Shinya
• Mizutani Kazuhiro
• Hisano Ryo
• Asahi Glass Co Ltd
• Starlite Ind

Inventors

• Nishi Eiichi
• Sato Takashi
• Uejima Hiroyoshi
• Ichikawa Tomokazu
• Hashimoto Toru
• Kikutani Shinya
• Mizutani Kazuhiro
• Hisano Ryo

Classifications

• C08L79/08

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title

• B65H29/56 Primary

  for stripping from elements or machines {(for electrographic machines G03G)} · CPC title

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title

• F16J9/26 Primary

  characterised by the use of particular materials · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title