JP2003073609A - Composition for lubricating film formation and lubricating film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-performance lubricating film remarkably low in friction coefficient and excellent in sliding durability. SOLUTION: The composition for the lubricating film 2 formation contains a thermosetting binder resin 7, a solid lubricant 6, and microcapsules 5 each enclosing a liquid lubricant 4 in its resin film 3. The binder resin 7 mainly comprises a fluoroolefin vinyl ether polymer resin and/or a fluoroolefin vinyl ether/vinyl ester copolymer resin. The resin composition for lubricating film formation is first applied to the surface of a substrate 1 and then is heat-cured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition for forming a lubricating coating and a lubricating coating, and more particularly to a wiper blade, a seal packing, an O-ring, a weather strip, a glass run, a timing belt, a rubber bellows, a gear, a door catch and the like. A lubricating film-forming resin composition for forming a lubricating film having a small friction coefficient and excellent sliding durability on the surface of a base material such as rubber or plastic, and a resin composition for forming the lubricating film. Lubrication film.

The present invention particularly relates to a resin composition for forming a lubricating film, which is effective for forming a lubricating surface film of a sliding member such as a wiper blade, a glass run, a weather strip, an O-ring, etc. whose surface slides against other members. And a lubricating coating formed by this resin composition for forming a lubricating coating.

[0003]

2. Description of the Related Art Conventionally, molded products such as natural rubber and synthetic rubber have been used as wiper blade rubbers.
Adhesion between the wiper blade rubber and the glass surface occurs, so-called "lock phenomenon" in which the wiper operation stops, and self-excited vibration due to the negative speed dependence of the friction coefficient, so-called "chatter phenomenon". However, there are problems such as defective wiping, abnormal wear of the blade rubber surface, shortened life of each connected part of the wiper system, increased power consumption of the operating motor, and annoying and harshness due to "chatter phenomenon".

On the other hand, regarding the sliding property between rubber and metal,
For oil seals and gasoline cap seals, the phenomenon of sticking occurs between the rubber and metal surfaces, resulting in high torque when opening and closing; sliding resistance between rubber and metal surfaces for O-rings, packings, timing belts, etc. Abnormal wear, stick-slip, and squealing due to high wear; perforation occurs due to abnormal wear even on rubber bellows; abnormal wear, squeaking, and squeaking of polyacetal, nylon resin, and other gears and door catches There is a problem such as sound is generated.

As a surface coating member which solves such problems and has extremely good slidability and high durability of the coating, Japanese Patent No. 2903709 contains a solid lubricant and a resin matrix. Which is a thermosetting resin cured by the curing agent, and the thermosetting resin is a fluoroolefin vinyl ether vinyl ester copolymer resin. What is provided is provided.

With this surface-coated member, good sliding characteristics can be obtained, but there is a demand for further improvement in sliding characteristics by further reducing the friction coefficient and improving durability.

[0007]

DISCLOSURE OF THE INVENTION The present invention provides a resin composition for forming a lubricating film, which is capable of forming a high-performance lubricating film having a remarkably small friction coefficient and excellent sliding durability, and a lubricating composition for forming the lubricating film. An object is to provide a lubricating coating formed from a resin composition.

[0008]

The resin composition for forming a lubricating film of the present invention is a resin composition for forming a lubricating film, which contains a thermosetting binder resin, a solid lubricant and microcapsules. The microcapsule contains a liquid lubricant in a resin film, and the binder resin contains a fluoroolefin vinyl ether polymer resin and / or a fluoroolefin vinyl ether vinyl ester copolymer resin as a main component. It is characterized by

Lubrication by a solid lubricant by blending a solid lubricant and microcapsules with a thermosetting binder resin made of a fluoroolefin vinyl ether polymer resin and / or a fluoroolefin vinyl ether vinyl ester copolymer resin By the synergistic effect of the improvement of the lubricity and the effect of improving the lubricity by the microcapsules, the friction coefficient can be remarkably reduced and the sliding durability can be remarkably enhanced.

That is, Japanese Patent No. 290 containing a solid lubricant.
With the surface-coated member disclosed in Japanese Patent No. 3709, good sliding characteristics can be obtained, but the friction coefficient tends to be insufficient with the lubricity of only the solid lubricant. In the present invention, the friction coefficient, which is insufficient with the solid lubricant, is supplemented with the liquid lubricant, and remarkably excellent sliding characteristics can be obtained by the synergistic effect of the lubricity of the liquid lubricant and the solid lubricant.

The action and effect of the liquid lubricant according to the present invention are as follows.

That is, when a lubricating coating formed by the resin composition for forming a lubricating coating of the present invention is used as a sliding surface and the surface is slid, the microcapsules exposed in the lubricating coating cause friction with the mating material. Ruptures the bubbles, and the liquid lubricant flows out to cover the sliding surface and provide good lubricity.

Since this liquid lubricant is in liquid form, it has a smaller friction coefficient and aggression against the other party than solid lubricants, and there is no risk of sludge and the like.

As the sliding surface wears,
By the appearance of new microcapsules, it becomes possible to constantly supply the liquid lubricant to the sliding surface, and the sliding surface formed by the lubricating film of the resin composition for forming a lubricating film of the present invention, Excellent friction characteristics can be stably maintained for a long period of time.

As described above, in the present invention, remarkably good sliding characteristics can be obtained by the synergistic effect of the lubricity of the liquid lubricant and the solid lubricant.

Further, the fluoroolefin vinyl ether polymer resin and / or the fluoroolefin vinyl ether vinyl ester copolymer resin itself which is the binder resin of the present invention is also excellent in lubricity, durability, chemical resistance, weather resistance and the like. This is advantageous in that the binder resin is thermosetting, so that the lubricant film can be easily formed by applying the binder resin to the surface of the base material and thermosetting it.

In the present invention, the content of the microcapsules is 10 to 100 parts by weight based on 100 parts by weight of the fluoroolefin vinyl ether polymer resin and / or the fluoroolefin vinyl ether vinyl ester copolymer resin as the binder resin, and solid lubrication. The content of the agent is preferably 50 to 400 parts by weight with respect to the fluoroolefin vinyl ether polymer resin and / or the fluoroolefin vinyl ether vinyl ester copolymer resin.

As for the microcapsules, the weight ratio of the resin film and the liquid lubricant is resin film: liquid lubricant = 1.
The liquid lubricant is preferably 5: 1 to 0.3: 1, and the liquid lubricant is preferably silicone oil, particularly silicone oil having a viscosity of 20 to 1,000,000 cSt. The average particle size of the microcapsules is preferably 50 μm or less.

The resin constituting the resin film of the microcapsule used in the present invention is a mixed resin of two or more amino resins, particularly two or more mixed resins selected from the group consisting of urea resins, melamine resins and benzoguanamine resins. In particular, it is preferable that the weight ratio of the urea resin and the melamine resin is a mixed resin of urea resin: melamine resin = 3: 7 to 7: 3.

On the other hand, a fluorine compound is preferable as the solid lubricant.

The lubricating coating of the present invention is formed by applying such a lubricating coating-forming resin composition of the present invention to the surface of a base material and then thermally curing the resin composition, and sliding with a low friction coefficient. Remarkably excellent in durability.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the resin composition for forming a lubricating coating and the lubricating coating of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view showing an embodiment of a lubricating coating 2 of the present invention formed on the surface of a base material 1 by the lubricating coating forming resin composition of the present invention. As shown in the drawings, according to the present invention, a lubricant film 2 in which a microcapsule 5 containing a liquid lubricant 4 in a resin film 3 and a solid lubricant 6 are dispersed in a binder resin 7 is formed on the surface of a base material 1. Thus, the synergistic effect of the lubricity of the liquid lubricant 4 and the solid lubricant 6 of the microcapsule 5 makes it possible to obtain remarkably excellent lubricating characteristics.

The resin composition for forming a lubricating coating of the present invention will be described below.

First, the microcapsules used in the present invention will be described.

The microcapsules used in the present invention are those in which a liquid lubricant is contained in a resin film (hereinafter sometimes referred to as "capsule film"), and bubbles containing the liquid lubricant in the binder resin. It is sufficient that the microcapsules have a shape and a material such as a microcapsule that is capable of improving the lubricity of the sliding surface by breaking the bubbles and covering the sliding surface with the liquid lubricant. There is no limit. The shape may be spherical or disc-shaped. Further, the capsule film may have holes or grooves in a part thereof and the liquid lubricant is not completely sealed by the film.

The resin constituting the capsule film of the microcapsule is not particularly limited, but it is desirable to use a mixed resin composed of two or more amino resins. That is, when the capsule film is made of a single resin, it is often difficult to form grooves or holes in the capsule film, and it is often difficult to hermetically enclose the liquid lubricant in the film. With the amino-based mixed resin, it is difficult to form grooves and holes, and therefore, the liquid lubricant can be sealed and enclosed in the capsule film, and the capsule film having excellent liquid tightness can be formed. . When the capsule film of the microcapsule has excellent liquid-tightness, the liquid lubricant does not leak from the microcapsule in the resin composition, and the microcapsule is ruptured by friction with the mating material. Since it is possible to release the agent, good friction characteristics by the resin composition for forming a lubricating coating of the present invention can be maintained for a long time,
preferable.

When the capsule membrane is formed of an amino-based mixed resin, the mixed resin is preferably any two kinds of urea resin, melamine resin and benzoguanamine resin, preferably a mixed resin of urea resin and melamine resin. . These resins have thermosetting properties and are collectively called amino resins. Urea resin has heat resistance and high hardness. Melamine resin has excellent impact resistance, heat resistance, and flame resistance. The benzoguanamine resin is an improved melamine resin having improved crack resistance. With a mixed resin of these resins, a capsule film having better characteristics can be easily formed. in this case,
The compounding ratio (weight ratio) in the mixed resin is more preferably set to 3: 7 to 7: 3 in the urea resin: melamine resin. By setting the compounding ratio within this range, it is possible to form a capsule film having more excellent hermeticity as compared with those outside this range.

As the liquid lubricant contained in the microcapsules, those usually used as liquid lubricants such as oil and grease can be used.
Silicone oil, especially viscosity (25 ° C kinematic viscosity) is 2
Silicone oil of 0 to 1,000,000 cSt is preferred. The higher viscosity of the silicone oil is preferable in terms of lubricity, and the viscosity of the silicone oil is particularly preferably 10,000 to 1,000,000 cSt. That is, when the viscosity of the silicone oil is low, the molecular chains of the silicone oil are likely to be sheared by sliding, and the lubricity is deteriorated. Therefore, the silicone oil having a high viscosity of 10,000 cSt or more is preferable.

The silicone oil is preferably emulsified with a surfactant or a silicone oil emulsion produced by an emulsion polymerization method. In this case, the surfactant is anionic, nonionic or cationic. One or more nonionic surfactants, preferably nonionic or cationic surfactants, are used. The particle size of this silicone oil emulsion is 100 nm ~
It is preferably 10 μm.

The weight ratio of the capsule film of the microcapsule to the liquid lubricant is as follows: capsule film: liquid lubricant = 1.5: 1
It is preferably 0.3: 1. If the amount of the capsule film is larger and the amount of the liquid lubricant is smaller than this range, the amount of the liquid lubricant leached by the breakage of the microcapsules is small, and sufficient lubricity cannot be obtained. On the other hand, if the amount of the capsule film is smaller than this range and the amount of the liquid lubricant is larger than this range, it may not be possible to maintain a good microcapsule shape.

If the particle size of the microcapsules containing such a liquid lubricant such as silicone oil in the capsule film is too large, the bubbles will be broken by a slight impact, and if it is too small, the amount of the liquid lubricant contained will be small. The average particle size of the microcapsules is 50 μm, because the number of microcapsules will be reduced and it will be difficult to break the bubbles.
In the following, it is particularly preferably 1 to 50 μm, and particularly preferably 1 to 20 μm.

On the other hand, as the solid lubricant, sulfides such as molybdenum disulfide and tungsten disulfide, polytetrafluoroethylene (PTFE), fluorine compounds such as fluorinated graphite, graphite, silicone powder and the like can be used. One of these solid lubricants may be used alone, or two or more thereof may be used in combination, but in the present invention, it is particularly preferable to use PTFE because of its excellent lubricating durability.

Solid lubricants such as PTFE have an average particle size of 10
μm or less, especially 5 μm or less, especially 0.5 to 5.0 μm
m is preferable.

The binder resin used in the present invention contains a fluoroolefin vinyl ether polymer resin and / or a fluoroolefin vinyl ether vinyl ester copolymer resin (hereinafter sometimes referred to as "main component resin") as a main component. This main component resin is cured with a curing agent to form a film.

As the curing agent, polyisocyanate, melamine resin or the like can be used, and the ratio of the curing agent to the main component resin is usually preferably 10 to 50 parts by weight based on 100 parts by weight of the main component resin. .

In the present invention, the microcapsules are 10 to 1 with respect to 100 parts by weight of the main resin of the binder resin.
It is preferably set to 00 parts by weight. When the blending ratio of the microcapsules is less than this range, the effect of improving the lubricity due to the blending of the microcapsules cannot be obtained,
On the other hand, when the amount is large, the proportion of the main component resin is relatively decreased, the film forming property is lowered, and the wear resistance and mechanical strength of the lubricating film are lowered.

The solid lubricant is preferably used in an amount of 50 to 400 parts by weight, particularly 60 to 160 parts by weight, based on 100 parts by weight of the main component resin of the binder resin. If the proportion of the solid lubricant is less than this range, the effect of improving the lubricity due to the blending of the solid lubricant cannot be obtained. Deteriorates, and the wear resistance and mechanical strength of the lubricating coating decrease.

In order to secure lubricity, wear resistance and mechanical strength, the microcapsule and the solid lubricant are in the above range in a total amount of 60 to 100 parts by weight of the main component resin.
It is preferable to add 260 parts by weight.

The resin composition for forming a lubricating coating of the present invention may be mixed with various additives such as colorants, pigments, ultraviolet absorbers, flame retardants, etc. within the range not impairing the object of the present invention. good.

In order to form a lubricating coating on the surface of a substrate with the resin composition for forming a lubricating coating of the present invention, microcapsules, a solid lubricant, a main resin and a curing agent are dispersed or dissolved in an organic solvent and applied. A liquid may be prepared, applied on the surface of the substrate, and then heated to cure.

As the organic solvent, methyl ethyl ketone,
Toluene, xylene, isopropyl alcohol, isobutanol, n-butanol, butyl acetate, methyl isobutyl ketone (MIBK), propylene glycol monomethyl ether acetate and the like are preferable, and the amount of the organic solvent used may be a concentration suitable for coating. , There is no particular limitation.

As a coating method, various methods such as brush coating, spraying and dipping can be adopted. Prior to this coating, the surface of the base material may be washed or surface treatment may be performed to improve compatibility with the binder resin. Examples of such surface treatment include primer treatment.

Heating can be carried out using a heating device such as an electric furnace, and the heating temperature is usually 60 to 150 ° C.

The thickness of the lubricating coating thus formed varies depending on the use of the member forming the lubricating coating, but is generally about 5 to 50 μm, and particularly about 5 to 20 μm. If the film thickness is less than 5 μm, the sufficient effect due to the formation of the lubricating coating cannot be obtained, and if it exceeds 50 μm, the problem of film peeling may occur. Further, if the film thickness of the lubricating coating is excessively large with respect to the particle size of the microcapsules, the microcapsules are buried in the coating, and the lubricating effect due to the release of the internal liquid lubricant cannot be obtained. On the other hand, if the film is too thin, it will not be able to hold the microcapsules, and if it contacts the mating material, it will break or fall off early and the lubricity cannot be maintained for a long time. The film thickness of is preferably about 0.5 to 1.5 times the average particle size of the microcapsules.

Such a lubricating coating is particularly effective as a lubricating coating for a sliding member made of rubber or plastic and a blended product. In this case, the rubber or plastic constituting the base material of the sliding member is not particularly limited. Various rubbers and plastics can be adopted instead.

The rubber may be natural rubber or synthetic rubber. Synthetic rubbers include styrene butadiene rubber, butadiene rubber, isoprene rubber, ethylene propylene rubber (EPM, EPDM), acrylonitrile butadiene rubber, chloroprene rubber, isobutylene isoprene rubber, alfin rubber, polyether rubber, polysulfide rubber, silicone rubber, acrylic. Examples thereof include rubber, fluororubber, halogenated polyethylene rubber, urethane rubber, ethylene vinyl acetate rubber, high styrene rubber, acrylonitrile isoprene rubber, and preferably EPDM.

The plastic may be either a thermosetting resin or a thermoplastic resin. As for plastic,
ABS resin, ABS blend, acetal resin (homopolymer), acrylic resin, ACS resin, alkyd resin,
Amino resin, ASA resin, cellulose resin, chlorinated polyether, diallyl phthalate resin, epoxy resin,
Ethylene vinyl acetate copolymer, fluororesin, ionomer, methylpentene polymer, phenol resin, polyamide (nylon), polyallyl ether, polyallyl sulfone, polypten-1, polycarbonate, unsaturated polyester resin, polyethylene, polyethylene terephthalate (tetron) , Polyimide, polyamide-imide,
Polyphenylene oxide, polyphenylene sulfide, polypropylene, polystyrene, polysulfone, polyether sulfone, polyurethane, vinyl chloride resin,
Examples include polyarylate.

The lubricating coating according to the present invention includes wiper blades, seal packings, O-rings, weather strips,
It is extremely effective as a lubricating coating formed on the surface of sliding members such as glass runs, timing belts, rubber bellows, gears, door catches, particularly wiper blades, glass runs, weather strips, O-rings, etc. In the wiper blade, the "lock phenomenon" and "chatter phenomenon" can be effectively prevented. Further, in the case of the O-ring or the like, the sliding resistance between the rubber and the metal surface can be reduced to effectively prevent abnormal wear, stick-slip, squeaking and the like.

[0050]

EXAMPLES The present invention will be described more specifically with reference to the following experimental examples and examples.

In the following experimental examples and examples,
The lubrication durability test was performed by the following method. [Lubrication Durability Test Method] A resin composition is sprayed to be applied on the surface of a rubber piece, and the composition is cured under a curing condition (heating condition) at 80 ° C. for 30 minutes, and a rubber block (material: Butylated bromine rubber) surface has a thickness of 10 μm
Was formed as a lubricating coating. This rubber block is 10mm x
A test piece was cut out into a size of 6 mm × 2 mm. A lubricating coating is formed on a surface of 10 mm × 6 mm of this test piece.

This test piece was tested with FALEXS NO.
1 The tester (FALEX CORPORATION) was installed and the durability of the lubricating coating was examined.

FIG. 2 is a schematic side view showing the state of this test, in which the test piece 11 is the test piece holder 1.
2 and is pressed against the outer peripheral surface of the ring 13 having a diameter of 35 mm with a load of 89 N (20 Lbs). The material of the outer peripheral surface of the ring 13 is SAE4620 steel (hardness: HRc58-63), and the surface roughness is 6 to
It is 12 rms. The ring 13 was reciprocally rotated about its axis at a speed of 150 cpm within a rotation range of 90 ° as indicated by an arrow. The test atmosphere was dry and at room temperature.

The number of cycles until the friction coefficient μ reached 0.4 at this time was measured as a life cycle (the number of durability cycles). If there was a sudden change in the friction coefficient before the friction coefficient reached 0.4, the test was terminated at that point and the number of cycles at that time was taken as the life cycle.

The microcapsules and solid lubricant used in the examples are as follows. [Microcapsule] Microcapsule A: Capsule film material = mixed resin of urea resin and melamine resin (urea resin: melamine resin = 1: 2 (weight ratio)) Liquid lubricant material = silicone oil emulsion, viscosity 100,000 cSt emulsion Particle size 250 to 350 nm Microcapsule particle size = 1 to 10 µm Capsule film: Liquid lubricant weight ratio = 1: 2 Microcapsule B: Viscosity 1000c as liquid lubricant
The structure is the same as that of the microcapsule A, except that the St silicone oil emulsion is included. [Solid lubricant] MoS ₂ : Average particle size 1 μm PTFE: Average particle size 5 μm Graphite: Average particle size 5 μm

Experimental Example 1 (Comparison of Lubrication Durability Based on Main Component Resin) Microcapsule A was mixed with the base compound and curing agent having the following formulations in the formulation shown in Table 1 to prepare a resin composition, and the lubricating durability was obtained. The sex was tested and the results are shown in Table 1. [Resin composition I] Main component Fluoroolefin vinyl ether vinyl ester copolymer ("Fluoronate K702" manufactured by Dainippon Ink and Chemicals, Inc.): 6.00 parts by weight Organic solvent (toluene, butyl acetate): 70.37 Parts by weight Curing agent Isocyanate curing agent ("Bernock DN980" manufactured by Dainippon Ink and Chemicals, Inc.): 1.05 parts by weight Organic solvent (methyl ethyl ketone (MEK, ethyl acetate)): 8.60 parts by weight [Resin composition II] Base agent Polyurethane-modified bisphenol A type epoxy resin (“R-1527” manufactured by Asahi Denka Co., Ltd.): 7.40 parts by weight Diglycidyl ester of long-chain dibasic acid: 7.40 parts by weight Organic solvent (toluene) : 70.55 parts by weight Curing agent Polyamidoamine (manufactured by Fuji Kasei Kogyo Co., Ltd., "Tomade TXA-525-E""): 8.65 parts by weight organic solvent (methyl ethyl ketone (MEK)): 16.35 parts by weight

[0057]

[Table 1]

From Table 1, it can be seen that the addition of microcapsules has an effect of improving the lubrication durability. However, when added to the fluoroolefin vinyl ether vinyl ester copolymer, the effect of improving the lubrication durability is particularly large. Recognize. The best effect is obtained when the amount of the microcapsules is 10 to 100 parts by weight, especially about 30 parts by weight, based on 100 parts by weight of the main component resin, and if the amount of addition exceeds this range, the lubricating durability tends to decrease. You can see that there is.

Example 1 (Comparative Example of Lubrication Durability According to PTFE Addition Amount) In Experimental Example 1, the amount of microcapsules added was 31 parts by weight with respect to 100 parts by weight of the main component resin, and only PTFE was used as a solid lubricant. Table 2 shows the amount of solid lubricant added
As shown in Table 1, various resin compositions were prepared in the same manner, the lubrication durability test was conducted, and the results are shown in Table 2.

[0060]

[Table 2]

From Table 2, it can be seen that the effect of improving lubrication durability is PTF.
The content of E is 50 to 4 with respect to 100 parts by weight of the main component resin.
It can be seen that the best effect can be obtained in the range of 00 parts by weight, and particularly about 125 parts by weight.

Example 2 (Comparison of Lubrication Durability by Viscosity of Silicone Oil) In Experimental Example 1, 125 parts by weight of PTFE was used as the solid lubricant per 100 parts by weight of the main component resin. Show 30 microcapsules
Part by weight, organic dye (Orient Chemical Co., Ltd.)
The resin composition was prepared in the same manner as above except that 3 parts by weight of "Oil Black HBB") was added, and the lubrication durability test was conducted. The results are shown in Table 3.

[0063]

[Table 3]

From Table 3, it can be seen that when the microcapsules A having a high viscosity of silicone oil are used, remarkably high lubricating durability can be obtained.

Example 3 (Comparison of Lubrication Durability and Friction Coefficient: Inventive Example and Comparative Examples 1 to 3) A resin composition prepared in the same manner as in Example 2 except that PTFE was not added (Comparative Example 1 ), PTFE and MoS as solid lubricants without the inclusion of microcapsules A
Each 167 parts by weight per 100 parts by weight of the main component resin _2, resin composition was prepared in the same manner except that blending 127 parts by weight (Comparative Example 2), and microcapsules A
And a resin composition (Comparative Example 3) prepared in the same manner except that PTFE was not blended, and the lubrication durability test was conducted in the same manner. The results are shown in Table 4 together with the results when the microcapsules A were used in Example 2. It was shown to.

Further, the transition of the friction coefficient of each resin composition was examined, and the results are shown in FIG.

[0067]

[Table 4]

From these results, it can be seen that by combining the microcapsules and the solid lubricant (PTFE) together, remarkably excellent lubricating durability can be obtained.

[0069]

As described in detail above, according to the present invention, the coefficient of friction is small, the wear resistance is excellent, and the aggressiveness against the opponent is low.
Moreover, a lubricating coating having excellent sliding durability that can maintain excellent friction characteristics stably for a long period of time is provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a lubricating coating of the present invention formed on the surface of a base material by the resin composition for forming a lubricating coating of the present invention.

FIG. 2 is a schematic side view showing a method for testing lubrication durability in Examples and Comparative Examples.

FIG. 3 is a graph showing changes in friction coefficient in Example 3.

[Explanation of symbols]

1 base material 2 Lubrication film 3 resin film 4 Liquid lubricant 5 microcapsules 6 Solid lubricant 7 Binder resin 11 test pieces 12 holder 13 ring

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ryohei Roki             84 Nestie-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Tee Inc. (72) Inventor Yutaka Inokari             Kureha, 6-1, 7-1 Nakaoka-cho, Iwaki City, Fukushima Prefecture             Chemical Industry Co., Ltd. F-term (reference) 4J038 CD091 CD122 CE051 CF011                       DA132 DG262 DL002 GA12                       HA026 HA356 KA03 KA06                       KA21 MA02 NA11 PC07 PC08

Claims (12)

[Claims] 1. A resin composition for forming a lubricating coating, comprising a thermosetting binder resin, a solid lubricant and microcapsules, wherein the microcapsules contain a liquid lubricant in a resin film. A resin composition for forming a lubricating coating, wherein the binder resin contains a fluoroolefin vinyl ether polymer resin and / or a fluoroolefin vinyl ether vinyl ester copolymer resin as a main component. 2. The content of the microcapsules according to claim 1, 10 to 100 parts by weight per 100 parts by weight of fluoroolefin vinyl ether polymer resin and / or fluoroolefin vinyl ether vinyl ester copolymer resin as binder resin. A resin composition for forming a lubricating coating, which is a part. 3. The content of the solid lubricant according to claim 1, which is 50 to 400 parts by weight based on the fluoroolefin vinyl ether polymer resin and / or the fluoroolefin vinyl ether vinyl ester copolymer resin. A resin composition for forming a lubricating coating, comprising: 4. The weight ratio of the resin film of the microcapsule to the liquid lubricant according to claim 1, wherein the resin film: liquid lubricant = 1.5: 1 to 0.3: 1. A resin composition for forming a lubricating coating, which is 5. The resin composition for lubricating film formation according to claim 1, wherein the liquid lubricant of the microcapsules is silicone oil. 6. The resin composition for lubricating film formation according to claim 1, wherein the microcapsules have an average particle size of 50 μm or less. 7. The viscosity according to claim 5 or 6, wherein the silicone oil in the microcapsules has a viscosity of 20 to 1,000,000 cS.
A resin composition for forming a lubricating coating, which is t. 8. The resin constituting the resin film of the microcapsule according to claim 1, wherein the resin is 2
A resin composition for forming a lubricating coating, which is a mixed resin of one or more amino resins. 9. The resin composition for forming a lubricating coating according to claim 8, wherein the amino resin is two or more selected from the group consisting of urea resin, melamine resin and benzoguanamine resin. 10. The resin composition for forming a lubricating coating according to claim 9, wherein the weight ratio of the urea resin and the melamine resin of the mixed resin is urea resin: melamine resin = 3: 7 to 7: 3. . 11. The resin composition for forming a lubricating coating according to any one of claims 1 to 10, wherein the solid lubricant is a fluorine compound. 12. A lubricating coating formed by applying the resin composition for forming a lubricating coating according to any one of claims 1 to 11 on a surface of a base material and then thermally curing the composition.