Lubricant-holding base material, method for producing same, lubricating material, and method for producing same

Patent metadata

Field	Value
Publication number	US-10240106-B2
Application number	US-201615057583-A
Country	US
Kind code	B2
Filing date	Mar 1, 2016
Priority date	Mar 2, 2015
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

Provided are a lubricating material which is made of a non-fluorine-based compound and thus has a surface that is slippery enough for liquid such as water or oil, a lubricant-holding base material which holds a fluorine-based lubricant and thus can be used as a lubricating material, and methods for producing the same. A slippery film has a holding base and a lubricant. The holding base has pillar structure portions and fluorine-containing portions, and the fluorine-containing portions are provided on outer surfaces of a plurality of pillar portions in the pillar structure portion. The lubricant is a fluorine-based liquid, and the fluorine-containing portion has a C—F bond. The lubricant is loaded into a region surrounded by a plurality of the pillar portions and is held in this region.

First claim

What is claimed is:

1. A method for producing a lubricant-holding base material,
wherein, with respect to an uneven structure body which is formed of a hydrophobic polymer and in which a plurality of recess portions or a plurality of protrusion portions are regularly arranged and insides of the recess portions or regions surrounded by a plurality of the protrusion portions adjacent to each other serve as spaces for holding a fluorine-based liquid lubricant, fluorine-containing portions are formed on inner surfaces of the recess portions or on outer surfaces of the protrusion portions, and
a thickness of the fluorine-containing portion is in a range of 5 nm to 5 μm.

2. The method for producing a lubricant-holding base material according to claim 1 ,
wherein the uneven structure body is a pillar structure body in which a plurality of the protrusion portions having a tapering shape and a certain size are formed in an upright shape.

3. The method for producing a lubricant-holding base material according to claim 2 ,
wherein the pillar structure body is formed by ultrasonically vibrating a honeycomb structure body provided with a honeycomb structure by arranging a plurality of the recess portions having a certain size in parallel on a surface in liquid so as to peel some portions near the surface off from the honeycomb structure body and leaving a portion of partition walls between the recess portions adjacent to each other in the honeycomb structure body as the protrusion portions.

4. The method for producing a lubricant-holding base material according to claim 1 ,
wherein the uneven structure body is a honeycomb structure body provided with a honeycomb structure by arranging a plurality of the recess portions having a certain size in parallel.

5. The method for producing a lubricant-holding base material according to claim 1 ,
wherein the hydrophobic polymer is a polyolefin capable of an ene-thiol reaction with a thiol having a fluorine atom, and
the fluorine-containing portions are formed by fluorinating the hydrophobic polymer with the thiol.

6. The method for producing a lubricant-holding base material according to claim 5 ,
wherein the polyolefin is polybutadiene.

7. A method for producing a lubricating material comprising:
a fluorine-containing portion-forming step of, with respect to an uneven structure body which is formed of a hydrophobic polymer and in which a plurality of recess portions or a plurality of protrusion portions are regularly arranged and insides of the recess portions or regions surrounded by a plurality of the protrusion portions adjacent to each other serve as spaces for holding a fluorine-based liquid lubricant, forming fluorine-containing portions on inner surfaces of the recess portions or on outer surfaces of the protrusion portions; and
a loading step of loading a fluorine-based lubricant into the insides of the recess portions or the regions surrounded by the protrusion portions,
wherein a thickness of the fluorine-containing portion is in a range of 5 nm to 5 μm.

8. The method for producing a lubricant-holding base material according to claim 1 ,
wherein a height of the protrusion portion is in a range of 0.1 μm to 20 μm.

9. The method for producing a lubricant-holding base material according to claim 1 ,
wherein a depth of the recess portion is in a range of 0.2 μm to 50 μm, and
wherein a diameter of an opening in the recess portion is in a range of 0.2 μm to 50 μm.

10. The method for producing a lubricant-holding base material according to claim 1 ,
wherein the fluorine-containing portions include at least one selected from the group consisting of polytetrafluoroethylene, perfluoroalkoxy alkanes, and perfluorooctanethiol.

11. The method for producing a lubricant-holding base material according to claim 1 ,
wherein the fluorine-based liquid lubricant is perfluoroalkylether.

12. The method for producing a lubricant-holding base material according to claim 1 ,
wherein the hydrophobic polymer is polystyrene.

13. The method for producing a lubricant-holding base material according to claim 1 ,
wherein a thickness of the lubricant-holding base material is in a range of 0.2 μm to 100 μm.

Assignees

• Fujifilm Corp

Inventors

• Ito Koju
• Yabu Hiroshi
• Kamei Jun

Classifications

• B29K2023/18

  Polymers of hydrocarbons having four or more carbon atoms, e.g. polymers of butylene, e.g. PB, i.e. polybutylene · CPC title

• C10M107/46

  containing sulfur · CPC title

• C10M109/02

  Reaction products · CPC title

• C10N2050/025

  in the form of films or sheets · CPC title

• B29K2995/0093

  hydrophobic · CPC title