JP2002144178A - Skid slide and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skid slide having a self-lubricating sliding member of high durability and excellent repeated sliding with a low friction coefficient. SOLUTION: A sliding resin member of this skid slide is so constituted that thermosetting resin together with a solid lubricant is transferred to the surface of an object base material 1 by sliding against the surface of the object base material 1 in a specified partially-set state and that the thermosetting resin is set by the local frictional heat generated to the sliding surface by sliding, to form an effective transfer film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-lubricating sliding slide having a resin sliding member and a method of manufacturing the same.

[0002]

2. Description of the Related Art In general, a slide slide using a resin sliding member used for a machine tool or the like is provided with a resin sliding member on one of two opposing base materials (metal, resin, etc.). It is an important component for performing high-precision work processing by sliding a base material, and a resin sliding member is required to have characteristics such as mechanical strength, dimensional accuracy, and lubricity as sliding characteristics.

[0003] Thermoplastic resins such as phenolic resins, novolak resins, polyimides, and epoxy resins are often used as the resin sliding materials for forming the resin sliding members. By using a two-part epoxy resin composed of a curing agent in combination, a cured product having various properties can be obtained. These have been applied to sliding slides because of their advantages such as excellent mechanical properties, small molding shrinkage ratio and good dimensional accuracy.

In some cases, a solid lubricant such as graphite, permolybdenum disulfide, or a fluororesin is added to the resin sliding material for the purpose of imparting self-lubricating properties to the resin sliding member.

A conventional self-lubricating resin sliding member is obtained by molding a resin sliding material containing a thermosetting resin and a solid lubricant on the surface of a base material, and further performing a curing treatment to cure the resin sliding material. Thus, a resin sliding member was obtained.

When one of the base materials having the resin sliding member formed in this way and the other base material having no resin sliding member are repeatedly slid, the resin sliding of the one base material is repeated. The solid lubricant is transferred from the member to the other base material, and the friction coefficient of the resin sliding surface can be reduced.

[0007]

In the above-described slide, the sliding characteristics can be improved by increasing the concentration of the solid lubricant contained in the resin sliding material. As the concentration of the lubricant increases, the friction coefficient decreases, but there is a problem that the viscosity of the resin sliding material increases and the workability decreases. Therefore, it is difficult to form a sliding member having good workability and lower friction.

When a fluorine resin such as PTFE or FEP is added at a high concentration as a solid lubricant for the purpose of lowering the friction coefficient, not only the viscosity increases but also the adhesion between the base material and the resin sliding member. There is also a problem of causing a peeling phenomenon due to the decrease.

Further, after the solid lubricant in the resin sliding member is transferred to the opposed base material, the solid lubricant may be detached from the opposed base material during repeated sliding. When the solid lubricant separates from the substrate, it causes a sharp increase in the coefficient of friction in sliding. In such a state, stable sliding characteristics cannot be obtained until the transfer of the solid lubricant from the resin sliding member occurs again.

Further, even when a resin sliding member is provided on both of the substrates, the conventional method, that is, a method in which each of the resin sliding members is molded and completely cured, and a sliding slide is formed by combining them, is used. In some cases, a phenomenon occurs in which the surfaces of both resin sliding members are shaved during sliding.

An object of the present invention is to provide a sliding slide which has high workability, high sliding characteristics, and excellent adhesion between a resin sliding member and a substrate, and a method for producing the sliding slide.

[0012]

The sliding slide of the present invention has a resin sliding member on each of the sliding surfaces of the opposing substrates, and at least one of the resin sliding members is made of a thermosetting resin and the whole. The resin sliding material is formed by sliding the surface of the partially sliding resin sliding material containing less than 30% by weight of a solid lubricant to transfer the resin sliding material to the base material.

[0013] The sliding slide of the present invention is characterized in that the thermosetting resin is a room-temperature-curable resin containing a main component and a curing agent.

[0014] The sliding slide of the present invention is characterized in that the cold-setting resin is an epoxy resin.

The sliding slide according to the present invention is characterized in that the resin sliding material has a glass transition temperature of 50 ° C. or less when the resin sliding material is transferred to a substrate.

The sliding slide according to the present invention is characterized in that a curing reaction rate of the resin sliding material when the resin sliding material is transferred to a substrate is 85% or less.

The slide slide of the present invention is characterized in that the slide slide has a self-lubricating property and is used without lubrication.

The method for manufacturing a slide slide according to the present invention comprises the steps of applying an uncured thermosetting resin containing less than 30% by weight of a solid lubricant to the first base material; Transferring the shape of the slip surface of the second base material, and converting the thermosetting resin having the transferred shape into a partially cured resin sliding material; and Having a step of sliding the base material to transfer the resin sliding material to the second base material.

[0019] The method of manufacturing a slide slide according to the present invention is characterized in that the thermosetting resin is a room temperature curable resin containing a main component and a curing agent.

[0020] The method of manufacturing a sliding slide according to the present invention is characterized in that the cold-setting resin is an epoxy resin.

The method of manufacturing a sliding slide according to the present invention is characterized in that the glass transition temperature of the resin sliding material when transferring the resin sliding material to the second substrate is 50 ° C. or less. I do.

The method of manufacturing a sliding slide according to the present invention is characterized in that when the resin sliding material is transferred to a second base material, the curing reaction rate of the resin sliding material is 85% or less. I do.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.

The resin sliding material 5 on the first substrate 4 of the present invention
First, the uncured resin sliding material 3 was applied to the surface of the first substrate 4, and the release agent 2 was thinly applied to the surface of the second substrate 1. Next, the resin sliding material 3 was partially cured while the first substrate 4 and the second substrate 1 were in close contact with each other, and the shape of the slip surface of the second substrate 1 was faithfully transferred. A resin sliding material 5 was formed. Further, after the first substrate 4 and the second substrate 1 are separated and the release agent 2 on the second substrate 1 is removed, the first substrate 4 and the second substrate 1 are slid. The transfer film 6 was moved to form the slide slide of the present invention.

As described above, by faithfully transferring the surface shape of the second base material 1, the scraping process which is usually performed manually can be simplified.

By providing a spacer between the second substrate 1 and the sliding surface of the first substrate 4, the thickness of the resin sliding material 5 can be arbitrarily controlled.

After the elapse of time after molding, the room temperature setting resin of the resin sliding material 5 becomes almost completely cured, so that a good transfer film 6 is formed on the second substrate 1. Cannot be formed. Therefore, in order to form a good transfer film 6 of the present invention, the transfer film 6 must be formed on the surface of the second substrate 1 in a partially cured state before complete curing.

Since the transfer film 6 thus formed is formed at the molecular level, it is strong, and can maintain stable sliding characteristics without being detached by subsequent sliding.

When the glass transition temperature is higher than 50 ° C., a good transfer film is not formed because the transfer film 6 is formed through a process in which the partially cured resin sliding material 5 is hardened by sliding.

It is important that the curing reaction rate of the partially cured resin sliding material 5 is lower than 85%. If the curing reaction rate is higher than 85%, a good transfer film is not formed even if the remaining unreacted portion is cured.

Further, the formation of the transfer film 6 is affected by the concentration ratio between the thermosetting resin and the solid lubricant. When the concentration of the solid lubricant in the entire resin sliding material is 30% by weight or more, an efficient transfer film is not formed.

The thermosetting resin contained in the resin sliding material 5 can be a phenol resin, a novolak resin, a polyimide, an epoxy resin, or the like. In the most preferred embodiment of the present invention, an epoxy resin is used. Was. When the epoxy resin is used, a curing accelerator such as a tertiary amine, phenol, an organic acid, or a curing catalyst may be used in addition to the main agent and the curing agent.

Further, the resin sliding material 5 of the sliding slide of the present invention is made of carbon black, talc, mica, kaolin,
An inorganic filler such as silica or glass beads may be added.

The resin sliding material 5 of the present invention will be described below by changing the glass transition temperature, the curing reaction rate, and the content of the solid lubricant.
A model of a slide slide was prepared using the method, and the slide slide was evaluated.

(Evaluation 1 of the slide slide of the present invention) Room temperature curing type epoxy resin composition Main agent: bisphenol A epoxy resin curing agent; modified amine curing agent PTFE as a solid lubricant so that the PTFE concentration becomes 10% by weight of the whole. The powder and the base material were mixed, and then a curing agent was added and mixed to prepare an uncured epoxy resin. An appropriate amount of the epoxy resin as the uncured resin material 3 was applied to a test piece base material (first base material 4) of S45C (50 mm × 50 mm × 5
(mm square) and a sample molding jig (second base material 1) (100 mm × 100 m
(m × 10 mm flat plate jig). The applied film thickness is 1.5 m on the end of the epoxy resin which is the uncured resin sliding material 3.
It was controlled by providing a m-thick spacer.

After that, the resin sliding material 5 formed on the test piece base material (first base material 4) is left at normal temperature (25 ° C.) for 48 hours to be partially cured. It was removed from the second substrate 1).

Next, the curing reaction rate of the resin sliding material 5 was measured by differential scanning calorimetry (DSC). FIG. 2 shows the measurement data. The uncured epoxy resin 10 of FIG.
The curing reaction rate of the partially cured epoxy resin 11 was found to be about 78%, and the glass transition temperature of the partially cured epoxy resin was found to be about 44 ° C.

Subsequently, an S45C flat plate indenter (corresponding to the second substrate 1 excluding the release agent 2) coated with the resin sliding material 5 and the diamond-like carbon coating (10)
(mm × 10 mm × 5 mm), and the transfer film 6 was formed on the flat plate indenter. The sliding condition was repeated 20,000 times at a load of 9.8 N, a speed of 6 m / min, and a reciprocating distance of 40 mm, thereby forming a transfer film 6. The friction coefficient of the slide slide of the present invention thus prepared was measured at a load of 9.8.
The results obtained at N, a speed of 0.1 m / min, and a moving distance of 20 mm are shown below. Static friction coefficient: 0.09 Dynamic friction coefficient: 0.05

As described above, the sliding slide having the resin sliding material 5 and the transfer film 6 using the partially cured epoxy resin whose curing reaction rate, glass transition temperature, and solid lubricant concentration are within the range of the present invention is sufficient. It was found to have very low friction.

(Evaluation 2 of the slide slide of the present invention) The slide slide of the present invention except that a bisphenol F epoxy resin was used as a main component of a cold-setting epoxy resin and the PTFE concentration was 5% by weight as a solid lubricant. A resin sliding material 5 on a test piece base material (first base material 4) was produced under the same conditions as in Evaluation 1 of the above.

The curing reaction rate of the partially cured epoxy resin after standing at room temperature for 24 hours was measured by DSC, and the curing reaction rate was about 78% and the glass transition temperature was about 40 ° C.

The resin slide material 5 and the flat plate indenter (the second substrate 1 excluding the release agent 2) formed on the prepared test piece base material (the first substrate 4) were repeatedly slid 20,000 times. The friction coefficient of the sliding slide formed by the movement is shown below. Static friction coefficient: 0.11 Dynamic friction coefficient: 0.06

As described above, the sliding slide having the resin sliding material 5 and the transfer film 6 using the partially cured epoxy resin whose curing reaction rate, glass transition temperature, and solid lubricant concentration are within the range of the present invention is sufficient. It was found to have very low friction.

Comparative Example 1 Resin on a test piece base material (first base material 4) in the same manner as in evaluation 1 of the slide slide of the present invention except that the PTFE concentration was 30% by weight as a solid lubricant. A sliding material 5 was produced.

The resin sliding material 5 and the flat plate indenter (the second substrate 1 excluding the release agent 2) formed on the prepared test piece base material (the first substrate 4) were repeatedly slid 20,000 times. The coefficient of friction of the sliding slide after the movement is shown below. Static friction coefficient: 0.17 Dynamic friction coefficient: 0.12

Since the concentration of the solid lubricant in the resin sliding material 5 was higher than the range of 30% in the present invention, it was found that a good transfer film 6 was not formed and the friction coefficient was high.

(Comparative Example 2) An uncured resin sliding material 3 was formed on a test piece base material (first base material 4) in the same manner as in the evaluation 1 of the slide slide of the present invention. For 24 hours, and then heated at 80 ° C. for 3 hours to completely cure the epoxy resin. Thereafter, the resin sliding material 5 was removed from the sample molding jig (second base material 1).

Next, when the curing reaction rate of the resin sliding material 5 was measured by DSC, the curing reaction rate was about 100%, and the glass transition point was about 80 ° C.

The resin sliding material 5 and the flat plate indenter (the second substrate 1 excluding the release agent 2) formed on the prepared test piece base material (the first substrate 4) were repeatedly slid 20,000 times. The coefficient of friction of the sliding slide after the movement is shown below. Static friction coefficient: 0.21 Dynamic friction coefficient: 0.09

Since the glass transition temperature and the curing reaction rate of the epoxy resin of the sliding resin member 5 are higher than the ranges of the present invention, it is found that a good transfer film 6 is not formed and the friction coefficient is increased.

FIG. 1 used to explain the present invention.
In, both substrates are shown as planar,
Naturally, it may be one having unevenness or one that slides by fitting both. Particularly when the surface shape of the base material is complicated and molding is difficult by the conventional method, the resin sliding member is transferred. Can be formed, thus facilitating manufacture.

[0052]

As described above, by using the self-lubricating sliding resin member of the present invention, the friction coefficient is low, the sliding property is excellent, the workability is good, and the sliding resin is excellent. A highly durable slide slide having good adhesion between the member and the substrate was obtained.

FIG. 1 used to explain the present invention.
In the above, both base materials are shown as flat, but may naturally have irregularities, or may be a material that slides by fitting both base materials, especially when the surface shape of the base material is complicated. Therefore, even if molding is difficult by the conventional method, the resin sliding member can be formed by transfer, so that the production becomes easy.

[Brief description of the drawings]

FIG. 1 is a view showing a method of manufacturing a slide slide according to an embodiment of the present invention.

FIG. 2 is DSC measurement data according to the first embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 second base material 2 release agent 3 uncured resin sliding material 4 first base material 5 resin sliding material 6 transfer film 10 uncured epoxy resin 11 partially cured epoxy resin

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) C10M 169/04 C10N 20:00 A // C10N 20:00 30:00 Z 30:00 40:02 40:02 50: 08 50:08 B23Q 1/26 Z F16C 29/02 33/20 ZF term (reference) 3C048 BB03 BB10 BC00 CC01 DD01 EE00 3J011 AA07 AA20 BA01 BA08 BA13 CA05 DA01 JA01 KA01 KA07 MA02 QA05 SC01 SC02 SC14 SE02 3J44 AA43A BA55 CA13 CA16 CA18 CA20 CA22 DA05 DA06 DA17 4H104 CB12C CD01A EA04Z LA20 PA01 QA11 4J002 CC041 CD001 CM041 EF007 EJ007 EN007 FD010 FD147 FD176 GH00 GM00

Claims (11)

[Claims] 1. A resin sliding member is provided on each of the sliding surfaces of the opposing substrates, and at least one of the resin sliding members includes:
It is formed by transferring the resin sliding material to a base material by sliding a partially cured resin sliding material surface containing a thermosetting resin and a solid lubricant of less than 30% by weight of the whole. A slide slide characterized by certain things. 2. The sliding slide according to claim 1, wherein the thermosetting resin is a cold-setting resin containing a main agent and a curing agent. 3. The slide slide according to claim 2, wherein the cold-setting resin is an epoxy resin. 4. The resin sliding material according to claim 2, wherein a glass transition temperature of the resin sliding material when transferring the resin sliding material to a substrate is 50 ° C. or less. Sliding slide. 5. The resin sliding material according to claim 2, wherein a curing reaction rate of the resin sliding material when the resin sliding material is transferred to a base material is 85% or less. Sliding slide. 6. The slide slide according to claim 1, wherein the slide slide has a self-lubricating property and is used without lubrication. 7. A step of applying an uncured thermosetting resin containing less than 30% by weight of a solid lubricant to the first substrate, and applying the slip surface of the second substrate to the thermosetting resin. Transferring the shape, and the step of making the thermosetting resin to which the shape is transferred a resin sliding material in a partially cured state, and sliding the resin sliding material and the second base material. A method for manufacturing a sliding slide, comprising a step of transferring the resin sliding material to the second base material. 8. The method according to claim 7, wherein the thermosetting resin is a cold-setting resin containing a main agent and a curing agent. 9. The method according to claim 8, wherein the cold-setting resin is an epoxy resin. 10. The glass transition temperature of the resin sliding material at the time of transferring the resin sliding material to the second base material is 50 ° C.
The method for manufacturing a slide slide according to claim 8, wherein: 11. The resin sliding material according to claim 8, wherein a curing reaction rate of the resin sliding material when transferring the resin sliding material to the second base material is 85% or less. A method for producing a slide slide according to any one of the claims.