KR101740356B1 - Functional coating structure using micro ball for wear and friction reduction and coating methode thereof - Google Patents

Functional coating structure using micro ball for wear and friction reduction and coating methode thereof Download PDF

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KR101740356B1
KR101740356B1 KR1020150144697A KR20150144697A KR101740356B1 KR 101740356 B1 KR101740356 B1 KR 101740356B1 KR 1020150144697 A KR1020150144697 A KR 1020150144697A KR 20150144697 A KR20150144697 A KR 20150144697A KR 101740356 B1 KR101740356 B1 KR 101740356B1
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South Korea
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microballs
attachment member
temporary attachment
polymer layer
microball
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KR1020150144697A
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Korean (ko)
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KR20170044952A (en
Inventor
김대은
유병훈
유신성
왕도영
올릭세이 펜코브
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연세대학교 산학협력단
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N15/00—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
    • B05D1/24—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/208—Methods of manufacture, e.g. shaping, applying coatings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The present invention relates to a functional coating structure and a coating method for abrasion reduction, and it is possible to reduce abrasion and friction by forming a microball coating layer on the surface of a structure to be contacted in two structures performing relative motion in contact with each other, A functional coating structure for abrasion reduction using a microball, which can form a microball coating layer on the surface of a polymer layer easily and inexpensively without causing cracks in the microball when the polymer layer having the microball coating layer is bent and deformed, Coating method.

Description

Technical Field [0001] The present invention relates to a functional coating structure and a coating method for reducing abrasion using a microball,

The present invention relates to a functional coating structure and a coating method for abrasion reduction using micro balls capable of reducing wear and friction by forming a microball coating layer on the surface of a structure to be contacted, .

Generally, a method of forming a thin coating on the surface of a structure is widely used in order to improve the friction wear characteristics between two structures performing relative motion in contact with each other. When a hard material is used as the material of the thin film coating, it is easy to think that wear phenomenon will be reduced due to increase in strength of the coating layer. However, since such a hard material has a high shear stress, Can be generated to accelerate surface wear. On the other hand, when a soft material is used as a thin film coating material, frictional force may be lower than that of a hard material because of low shear stress. However, since the strength of the coating layer is low, The coating layer may be broken and the abrasion phenomenon may be increased. In this way, when a thin film is coated on the surface of a structure, hard and soft materials generally have advantages and disadvantages in terms of friction and wear.

In this way, different strengths and weaknesses are exhibited in terms of reduction in friction and wear depending on the characteristics of the material coated on the surface of the structure. Therefore, in the past, researches for improving the friction and abrasion characteristics have been made Has come.

As an example of such a thin film coating layer, there is one in which a ceramic coating layer 2 is formed on the surface of a polymer film 1 as shown in Fig. However, such a structure has a problem in that when the polymer film 1 is bent as shown in FIG. 2, since the maximum strain of the ceramic coating layer 2 is smaller than that of the polymer film 1, cracks are generated in the ceramic coating layer 2.

3, when the coating layers 12 and 14 formed on the upper side of the lower structure 10 are deformed due to the vertical load applied from the upper structure 20 moving relative to each other as shown in FIG. 3, There is a problem that cracks are generated in the portion of the upper coating layer 14 which is in contact with the upper structure 20 and the coating layer is damaged, because the lower layer 14 made of soft material can not completely follow the deformation of the lower coating layer 12, In the process of deformation of the upper coating layer 14, stress concentration in the horizontal direction causes the coating layer breakage phenomenon to occur more easily, causing a large number of abrasive particles, and the abrasion particles generated thereby seriously affect friction and abrasion there was.

KR 10-1470320 B1 (2014.12.02.)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a micro-ball coating layer on a surface of a structure to be contacted, And to provide a functional coating structure and a coating method for abrasion reduction using micro balls capable of reducing friction.

In order to accomplish the above object, the present invention provides a functional coating structure for abrasion reduction using a microball, comprising: a flexible polymer layer; A plurality of microballs formed in a spherical shape and having a hardness higher than that of the polymer layer and embedded on the surface of the polymer layer, each of the microballs partially protruding above the upper surface of the polymer layer; And a control unit.

In addition, the microballs are each partially protruded upward from the upper surface of the polymer layer.

The microballs may have the same top height.

In addition, the microballs are each formed such that at least half of the microballs are embedded in the polymer layer.

The microballoons may further include a substrate coupled to an opposite side of the polymer layer on which the microballs are embedded.

In addition, the polymer layer is characterized in that the ratio of polydimethylsiloxane (PDMS) to the curing agent is 15: 1 to 22.5: 1, followed by curing.

And, a functional coating method for abrasion reduction using microballs includes: (S10) attaching microballs to a temporary attachment member; (S20) of pressing the temporary attachment member to which the microballs are attached to the previously formed polymer layer to press the microballs in the polymer layer; And removing the temporary attachment member (S30); And a control unit.

The step S10 includes a step S11 of floating a plurality of microballs on the surface of the liquid; And a step (S12) of bringing the temporary attachment member into contact with the microballs so that the microballs are attached to the temporary attachment member; And a control unit.

In addition, in a state in which the temporary attachment member is horizontal, the temporary attachment member disposed on the upper side of the microballs is moved downward toward the microballs to bring the temporary attachment member into contact with the microballs, and then the temporary attachment member is lifted upward And the microballs are attached to the lower surface of the temporary attachment member.

In addition, in a state where the temporary attachment member is vertical, the temporary attachment member disposed on the upper side of the microballs is moved downward so as to be submerged in the liquid, then lifted upwards, and the temporary attachment member is moved upward, And the microballs are attached on both sides in the horizontal direction.

Further, the temporary attachment member is moved upward and rises above the surface of the liquid, so that the microballs are attached to both sides of the temporary attachment member while the microballs floating on the surface of the liquid collect toward the temporary attachment member .

In addition, in step S20, the polymer layer is cured in a state that the micro balls are embedded in the polymer layer after being pressurized to a specific pressure for a specific time at a specific temperature.

The functional coating structure and coating method for abrasion reduction using the microball of the present invention are advantageous in that abrasion and friction can be reduced between two structures performing relative motion in a state where the microballs are in contact with each other.

In addition, when the polymer layer having the microball coating layer is bent and deformed, cracks do not occur in the microball and the polymer layer is not damaged.

In addition, there is an advantage that the microball coating layer can be formed on the surface of the polymer layer easily and at low cost.

1 to 3 are cross-sectional views showing a conventional coating structure for abrasion reduction.
4 is a cross-sectional view illustrating a functional coating structure for abrasion reduction using a microball according to an embodiment of the present invention.
5 is a cross-sectional view showing a state in which a polymer layer according to the present invention is bent.
6 is a cross-sectional view showing a state in which the microballs according to the present invention are pressed by a friction object to deform a polymer layer.
7 is a planar microscope image showing a functional coating structure for abrasion reduction using a microball according to the present invention.
8 is a sectional view showing a functional coating structure for abrasion reduction using a microball according to another embodiment of the present invention.
9 is a graph showing the results of friction experiments according to the ratio of the PDMS and the curing agent forming the polymer layer.
10 is a microscope image showing that the microballs were removed when the ratio of the hardener was relatively high (10: 1) in the functional coating structure for abrasion reduction using the microball according to the present invention.
11 is a microscope image showing that the microballs were dropped off when the ratio of the hardener was relatively low (30: 1) in the functional coating structure for abrasion reduction using the microball according to the present invention.
12 and 13 are cross-sectional views illustrating a functional coating method for abrasion reduction using a microball according to the present invention.
14 and 15 are cross-sectional views illustrating a method for attaching microballs to a temporary attachment member according to the present invention.
16 is a cross-sectional view showing an embodiment in which a pattern is formed on a polymer layer according to the present invention.

Hereinafter, the functional coating structure and coating method for abrasion reduction using the microball of the present invention will be described in detail with reference to the accompanying drawings.

[Coating structure]

4 is a cross-sectional view illustrating a functional coating structure for abrasion reduction using a microball according to an embodiment of the present invention.

As shown in the figure, the functional coating structure 1000 for abrasion reduction using the microball of the present invention includes a flexible polymer layer 100; And a plurality of microballs formed in a spherical shape and having a hardness higher than that of the polymer layer 100 and embedded on the surface of the polymer layer 100 and partially protruding above the upper surface of the polymer layer 100 200); . ≪ / RTI >

First, the polymer layer 100 may be formed of a flexible plate made of a polymer material, and may be formed of various materials that can be bent or elastically deformed. For example, the polymer layer 100 may be formed of polydimethylsiloxane (PDMS), which is a stamp material used mainly in an imprint process.

A plurality of microballs 200 are coupled to the upper surface of the polymer layer 100 so that the microballs 200 form a single layer. That is, the microballs 200 may be formed of a single layer. At this time, the microball 200 may be formed of various materials having hardness higher than that of the polymer layer 100, and may be formed of a ceramic ball or the like. In addition, the microball 200 may be formed in various sizes and may have a diameter of several nanometers to tens of micrometers. In addition, the microball 200 may be formed in various shapes, but is preferably formed in a spherical shape. In addition, the microballs 200 may be embedded in the surface of the polymer layer 100, and the microballs 200 may partially protrude above the upper surface of the polymer layer 100.

That is, the microball 200 is not completely embedded in the polymer layer 100, but a part of the microball 200 protrudes above the upper surface of the polymer layer 100, And is not in contact with the polymer layer 100. Since the spherical microball 200 and the object 500 are in contact with each other, the spherical shape of the microball 200 does not cause stress concentration in the microball 200, thereby preventing breakage of the microball 200, And the friction can be reduced, and the breakage of the polymer layer can be prevented.

Thus, the functional coating structure and coating method for abrasion reduction using the microball of the present invention can reduce abrasion and friction between two structures performing relative motion in a state where the microballs are in contact with each other, There is no crack in the microball and the microballs can not be dropped from the polymer layer. 6, even if the polymer layer 100 is pressed by the object 500 to be rubbed, the microballs 200 may be cracked or the polymer layer 100 may not be broken.

In addition, the microballs 200 may have the same height at their tops.

That is, since the tops of the microballs 200 are formed to have the same height, the surface roughness of the upper surface of the microballs 200 can be improved, thereby further reducing the friction.

In addition, more than half of the microballs 200 may be embedded in the polymer layer 100.

That is, the microball 200 may be formed so as to be embedded so that its center height is located below the upper surface of the polymer layer 100, so that the bonding force between the polymer layer 100 and the microball 200 can be improved. Thus, the microball 200 may not easily drop when the object 500 is rubbed while contacting the microball 200.

In addition, the microballs 200 may be formed in contact with or spaced apart from each other. As shown in the microscope image of FIG. 7, the microballs 200 may be freely distributed on a plane, and adjacent microballs 200 may be attached to each other or spaced apart and embedded in the polymer layer 100 .

The microball 200 may further include a substrate 300 coupled to an opposite side of the embedded polymer layer 100.

8, the polymer layer 100 may be laminated on the upper surface of the substrate 300, and the microballs 200 may be embedded on the upper surface of the polymer layer 100. At this time, the substrate 300 may be formed of a plate having a hardness higher than that of the polymer layer 100, for example, a silicon wafer. A variety of methods may be used to form the polymer layer 100 on the substrate 300. For example, the PDMS precursor solution, which is the material of the polymer layer 100, is dropped on the substrate 300 The polymer layer 100 may be formed by spin-coating to form a flat shape, followed by curing. At this time, the polymer layer 100 may be mixed with the polymer and the curing agent in a specific ratio.

In addition, the polymer layer may be cured by mixing a ratio of polydimethylsiloxane (PDMS) to a curing agent of 15: 1 to 22.5: 1.

For example, the functional coating structure for abrasion reduction using the microball of the present invention is formed, and the ratio of PDMS to the curing agent is set to 5: 1, 10: 1, 20: 1, 25: To form a coating structure. The coated material was tested for 5,000 times at 4 mm / s at a distance of 2 mm under a 5 gf vertical load condition using a 1.6 mm stainless steel ball as a friction object. The results are shown in FIG. Experimental results showed that the ratio of 20: 1 was the optimum mixing ratio of PDMS and curing agent for the preparation of the functional coating structure using microballs. From the point of time when the friction coefficient increased at different mixing ratios, I can see that they are falling apart. In PDMS with rigid PDMS such as 5: 1 and 10: 1, PDMS did not exhibit the energy absorption and recovery abrasion reduction effect in the elastic region. A phenomenon that can not be fixed is found.

FIGS. 10 and 11 are surface microscopic images of the specimens in which the microballs are removed when the frictional coefficient increases due to the drop of the microballs as a result of friction test according to the ratio of the PDMS and the curing agent. That is, in the case of the PDMS which is relatively hardened as shown in FIG. 10, the PDMS does not exhibit the effect of absorbing and restoring wear due to energy absorption in the elastic region and the microballs are eliminated. In the case of the relatively soft PDMS Shows that micro balls are missing because they can not hold the micro ball. FIG. 10 is a microscope image showing that the microballs are dropped when the ratio of the hardener is relatively high, and FIG. 11 is a microscopic image showing that the microballs are dropped when the ratio of the hardener is relatively low.

[Coating method]

12 and 13 are cross-sectional views illustrating a functional coating method for abrasion reduction using a microball according to the present invention.

As shown in the figure, the functional coating method for abrasion reduction using the microball according to the present invention includes: (S10) attaching the microballs 200 to the temporary attachment member 400; (S20) of pressing the temporary attachment member (400) having the microballs (200) attached thereto against the previously formed polymer layer (100) to press the microballs (200) in the polymer layer (100); And removing the temporary attachment member 400 (S30); . ≪ / RTI >

Step S10 is a step of attaching the microball 200 to the temporary attachment member 400. As shown in the figure, the microballs 200 are arranged on the upper surface of the temporary attachment member 400 as a single layer, State. At this time, the temporary attachment member 400 may be formed of a flat plate such as a silicon wafer, and the temporary attachment member 400 may be formed of a material having a hardness higher than that of the micro ball 200 or the same material.

Step S20 is a step of closely pressing the microball 200 and the polymer layer 100 so that the microballs 200 are embedded in the polymer layer 100 formed in advance. The polymer layer 100 may be pressed against the microballs 200 by pressing the microballs 200 into the lower surface of the polymer layer 100 with the layer 100 disposed therebetween. At this time, the polymer layer 100 can be moved downward while the lower surface of the temporary attachment member 400 is supported and fixed, and the polymer layer 100 can be pressed at a specific pressure from above. In addition, the polymer layer 100 may be formed only of the polymer layer separator, or may be formed by stacking the substrate 300 on the polymer layer 100.

In step S30, the temporary attachment member 400 is removed. After the micro-balls 200 are press-fitted into the polymer layer 100, the polymer layer 100 is lifted up, Can be removed. In addition, the temporary attachment member 400 can be removed in various ways.

Although the microballs 200 are shown attached to the surface of the polymer layer 100, the microballs 200 may be embedded in the polymer layer 100.

Thus, the microball coating layer can be formed on the surface of the polymer layer by the simple method as described above, which is advantageous in that the coating structure can be formed easily and at low cost.

Step S10 includes a step S11 of floating a plurality of microballs 200 on the surface of the liquid 600; (S12) bringing the temporary attachment member (400) into contact with the microballs (200) so that the microballs (200) are attached to the temporary attachment member (400); . ≪ / RTI >

That is, the microball 200 may be attached to the temporary attachment member 400 by various methods. For example, as shown in FIG. 1, after the microballs 200 are suspended on the surface of the liquid 600, The microballs 200 can be made to adhere to the surface of the temporary attachment member 400 by bringing the attachment member 400 into contact with the microballs 200. [ Since the microballs 200 are very small in size, they may float on the surface of the liquid 600 due to surface tension. When the density of the microballs 200 is less than the density of the liquid 600, And the microball 200 may float due to the surface tension.

The microballs 200 can be distributed evenly on the surface of the liquid 600 and the microballs 200 can be made to form one layer (single layer) on the surface of the liquid 600 . Also, the microball 200 is easily attached to the surface of the temporary attachment member 400 and can be attached in an even distribution.

Here, as an example of a method of attaching and moving the microballs 200 suspended on the surface of the liquid 600 to the temporary attachment member 400, the temporary attachment member 400 may be moved in the horizontal The temporary attachment member 400 disposed on the upper side of the microballs 200 is moved downward toward the microballs 200 to bring the temporary attachment member 400 into contact with the microballs 200, 400 may be lifted up to attach the micro balls 200 to the lower surface of the temporary attachment member 400. [

That is, since the microballs 200 are suspended in a horizontal state on the surface of the liquid 600, in a state where the temporary attachment member 400 is horizontally arranged in the air so as to be spaced apart from the microballs 200, The temporary attachment member 400 is directly moved downward so that the lower surface of the temporary attachment member 400 is brought into contact with the microballs 200 and then the temporary attachment member 400 is lifted upward, The microballs 200 may be attached to the lower surface of the base plate 200.

As another example of a method of attaching and moving the microballs 200 suspended on the surface of the liquid 600 to the temporary attachment member 400, the temporary attachment member 400 may be vertically moved The temporary attachment member 400 disposed on the upper side of the microballs 200 is moved downward so as to be immersed in the liquid and lifted to the upper side so that the temporary attachment member 400 moves upward, The microballs 200 can be attached to both sides of the substrate 200 in the horizontal direction.

That is, in a state where the temporary attachment member 400 is vertically arranged in the air so that the microballs 200 are floating on the surface of the liquid 600 and spaced above the microballs 200, The temporary attachment member 400 is moved downward to be immersed in the liquid 600 and then the temporary attachment member 400 is slowly lifted upward to move the temporary attachment member 400 The micro balls 200 may stick to both sides of the temporary attachment member 400 in the horizontal direction.

The temporary attachment member 400 moves upward and rises above the surface of the liquid 600 while the microballs 200 are attached to both sides of the temporary attachment member 400 and the surface of the liquid 600 So that the suspended microballs 200 can be collected toward the temporary attachment member 400.

That is to say, the temporary attachment member 400 can be attached to both sides of the temporary attachment member 400 so that the microballs 200 can easily adhere to the surface of the temporary attachment member 400 while the temporary attachment member 400 is vertically withdrawn from the liquid 600. [ It is possible to gradually move the barrier 700 of one phase arranged to be partially immersed in the liquid 600 toward the direction facing each other. At this time, as the upper end of the temporary attachment member 400 starts to rise above the surface of the liquid 600, the barriers 700 are moved toward the center so that the microballs 200 floating on the surface of the liquid 600 are temporarily The microballs 200 can be attached to both sides of the temporary attachment member 400 easily.

In step S20, the polymer layer 100 may be cured in a state in which the micro balls 200 are embedded in the polymer layer 100 after the specific pressure is applied at a specific temperature for a specific time.

That is, the polymer layer 100, the microballs 200, and the temporary attachment member 400 are heated, for example, for a predetermined time so that the microballs 200 can be easily inserted into the polymer layer 100 Can be added.

For example, after the polymer layer 100 is brought into close contact with the micro balls 200 with the micro balls 200 having a diameter of 50 micrometers attached to the temporary attachment member 400, a vertical load of 200 gf is applied, The microball 200 may be formed in a state where the microball 200 is embedded in the polymer layer 100 by heating and pressing at 100 ° C for 3 hours. At this time, the polymer layer 100 may be in a soft state without being cured before being heated, and the polymer layer 100 may be hardened by reaction with the polymer and the curing agent during heating. Thereafter, after cooling for a specific time at room temperature, the temporary attachment member 400 is separated, and a coating structure in which the microballs 200 are embedded in the surface of the polymer layer 100 can be formed.

In addition, the polymer layer 100 may have a pattern formed on a surface to which the microballs 200 are coupled. That is, as shown in FIG. 16, a pattern of concave-convex patterns may be formed on the lower surface of the polymer layer 100, and a coating structure may be formed in which the microballs 200 are embedded only on the lower surface of the protruded portion. At this time, the microballs 200 are attached to the upper surface of the temporary attachment member 400, but may be attached in multiple layers instead of a single layer. Although the microballs 200 are shown attached to the surface of the polymer layer 100 in the figure, the microballs 200 may be embedded in the polymer layer 100.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It goes without saying that various modifications can be made.

1000: Functional coating structure for abrasion reduction using microball
100: polymer layer
200: Microball
300: substrate
400: temporary attachment member
500: Friction object
600: liquid
700: barrier

Claims (11)

delete delete delete delete delete Floating a plurality of microballs on the liquid surface (S11);
(S12) bringing the temporary attachment member into contact with the microballs so that the microballs are attached to the temporary attachment member;
(S20) of pressing the temporary attachment member to which the microballs are attached to the previously formed polymer layer to press the microballs in the polymer layer; And
Removing the temporary attachment member (S30); , ≪ / RTI >
The temporary attachment member disposed on the upper side of the microballs is moved downward toward the microballs in a state where the temporary attachment member is horizontal, the temporary attachment member is brought into contact with the microballs, and then the temporary attachment member is lifted upward, Wherein the microballs are attached to the lower surface of the attachment member.
Floating a plurality of microballs on the liquid surface (S11);
(S12) bringing the temporary attachment member into contact with the microballs so that the microballs are attached to the temporary attachment member;
(S20) of pressing the temporary attachment member to which the microballs are attached to the previously formed polymer layer to press the microballs in the polymer layer; And
Removing the temporary attachment member (S30); , ≪ / RTI >
The temporary attachment member disposed on the upper side of the microballs is moved downward so as to be immersed in the liquid in the state where the temporary attachment member is vertical and then lifted upwards so that the temporary attachment member moves upward, And the microballs are attached to both surfaces of the substrate.
delete delete 8. The method of claim 7,
The temporary attachment member moves upward and rises above the surface of the liquid so that the microballs are attached to both sides of the temporary attachment member while the microballs floating on the surface of the liquid collect toward the temporary attachment member Functional Coating Method for Wear Reduction Using Micro Ball.
8. The method according to claim 6 or 7,
Wherein the polymer layer is cured in a state where the polymer layer is pressed while being pressurized at a specific pressure for a specific time at a specific temperature and then the microballs are embedded in the polymer layer.
KR1020150144697A 2015-10-16 2015-10-16 Functional coating structure using micro ball for wear and friction reduction and coating methode thereof KR101740356B1 (en)

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KR101740356B1 true KR101740356B1 (en) 2017-05-26

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US20080090090A1 (en) * 2004-06-26 2008-04-17 Jochen Munster Poyvinylidene Chloride Coating, Process for Producing a Coating and Use Thereof

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US20080090090A1 (en) * 2004-06-26 2008-04-17 Jochen Munster Poyvinylidene Chloride Coating, Process for Producing a Coating and Use Thereof

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