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Применить Всего найдено 6. Отображено 6.
15-06-2017 дата публикации

METHOD OF APPLYING PTFE COATING SOLUTION AND VEHICLE PART COATED WITH PTFE COATING SOLUTION

Номер: US20170166773A1
Автор: Yool Koo KIM, KIM YOOL KOO, KIM Yool Koo
Принадлежит:

A method of applying a PTFE (polytetrafluoroethylene) solution includes a dispersion step of dispersing a diamond powder in an organic solvent using bead milling to manufacture a dispersion solution, a mixing step of mixing a silane solution with the dispersion solution to manufacture a mixture solution, an addition step of adding the PTFE solution including PTFE particles having a size of 0.1 to 6 μm to the mixture solution to manufacture a coating solution, a coating step of applying the manufactured coating solution on a surface of a piston skirt to form a coated layer including a plurality of dimples distributed thereon, and a curing step of drying and heat-treating the coated layer. 1. A method of applying a PTFE (polytetrafluoroethylene) solution , comprising:a dispersion step of dispersing a diamond powder in an organic solvent using bead milling to manufacture a dispersion solution;a mixing step of mixing a silane solution with the dispersion solution to manufacture a mixture solution;an addition step of adding the PTFE solution including PTFE particles having a size of 0.1 to 6 μm to the mixture solution to manufacture a coating solution;a coating step of applying the manufactured coating solution on a surface of a piston skirt to form a coated layer including a plurality of dimples distributed thereon; anda curing step of drying and heat-treating the coated layer.2. The method of claim 1 , wherein each of the plurality of dimples has a diameter of 50 to 350 μm.3. The method of claim 1 , wherein a particle size of the diamond powder dispersed in the organic solvent during the dispersion step is 100 to 400 nm.4. The method of claim 1 , wherein 100 parts by weight of the organic solvent and 5 to 10 parts by weight of the diamond powder are mixed to manufacture the dispersion solution during the dispersion step.5. The method of claim 1 , wherein the silane solution has an amino functional group.6. The method of claim 1 , wherein 100 parts by weight of the ...

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Номер записи: 1
14-03-2019 дата публикации

COATING COMPOSITION AND WASHER FOR VEHICLE DRIVE SHAFTS MANUFACTURED THEREFROM

Номер: US20190077986A1
Автор: KIM Yool Koo
Принадлежит:

Disclosed is a coating composition including an amount of about 5 to 15 wt % of polyamide-imide (PAI), an amount of about 5 to 15 wt % of polytetrafluoroethylene (PTFE), an amount of about 0.5 to 1.5 wt % of fluorosilane, an amount of about 1 to 5 wt % of a ceramic particle, and a solvent component, wherein all the wt % are based on the total weight of the coating composition. 1. A coating composition for coating a washer for vehicle drive shafts comprising:an amount of about 5 to 15 wt % of polyamide-imide (PAI);an amount of about 5 to 15 wt % of polytetrafluoroethylene (PTFE);an amount of about 0.5 to 1.5 wt % of fluorosilane;an amount of about 1 to 5 wt % of a ceramic particle; anda solvent component,all the wt % based on the total weight of the coating composition.2. The coating composition of claim 1 , wherein the fluorosilane comprises at least one of perfluorodecyltrimethoxysilane and trifluoropropyltrimethoxysilane.3. The coating composition of claim 1 , wherein the fluorosilane has a molecular structure comprising an organic functional group and an inorganic functional group claim 1 ,the organic functional group is bonded to the polyamide-imide (PAI) or the polytetrafluoroethylene (PTFE), andthe inorganic functional group is bonded to the ceramic particle or a matrix of the washer.4. A coating composition for coating a washer for vehicle drive shafts consisting essentially of:an amount of about 5 to 15 wt % of the polyamide-imide (PAI);an amount of about 5 to 15 wt % of the polytetrafluoroethylene (PTFE);an amount of about 0.5 to 1.5 wt % of the fluorosilane;an amount of about 1 to 5 wt % of the ceramic particle; andthe solvent component,all the wt % based on the total weight of the coating composition.5. A coating composition for coating a washer for vehicle drive shafts consisting of:an amount of about 5 to 15 wt % of the polyamide-imide (PAD;an amount of about 5 to 15 wt % of the polytetrafluoroethylene (PTFE);an amount of about 0.5 to 1.5 wt % of the ...

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Номер записи: 2
29-03-2018 дата публикации

HEAT DISSIPATING PLATE DEVICE FOR LIGHT EMITTING DIODE, HEAD LAMP FOR AUTOMOBILE AND METHOD FOR PREPARING THE SAME

Номер: US20180090653A1
Автор: CHO Byung Kyu, Kim Kwang Jin, KIM Yool Koo, ZHANG Bong Jun
Принадлежит:

A heat dissipating plate for a light emitting diode (LED) includes a metal thin film containing a hydroxyl functional group (—OH). A coating layer is disposed on at least one surface of the metal thin film and includes a carbon nanotube containing a hydrophilic functional group. The coating layer is attached to the metal thin film by bonding the hydroxyl functional group with the hydrophilic functional group in a hydrogen bond. 1. A method of preparing a heat dissipating plate for an LED comprising steps of:oxidizing a carbon nanotube in an acid aqueous solution;neutralizing the oxidized carbon nanotube and then treating an ultrasonication to provide a carbon nanotube dispersion; andimmersing a metal thin film in the carbon nanotube dispersion and heating the same to coat the carbon nanotube on the metal thin film.2. The method of claim 1 , wherein the dispersion further comprises a dispersing agent selected from sodium dodecyl sulfate claim 1 , lithium dodecyl sulfate claim 1 , Triton-x claim 1 , and a combination thereof.3. The method of preparing a heat dissipating plate of claim 1 , wherein the step of heating the metal thin film is performed with a thermal capacity of about 150 to 400 W/cmfor about 0.5 to 2 hours. This application is Divisional of U.S. patent application Ser. No. 14/520,917, filed on filed Oct. 22, 2014, the disclosure of which is incorporated by reference herein.The present disclosure relates to a heat dissipating plate for a light emitting diode (LED), a head lamp for an automobile including the same, and a method for preparing the same.As generally known, an electronic member generating a lot of heat includes a high power amplifier (HPA) and a linear power amplifier (LPA) of a mobile communication repeater, a central processor unit (CPU) of a personal computer, a multiple processor unit (MPU) of a server-level work station, a power amplifier unit (PAU) of a relay base station, and so on. For these electronic members, a surface temperature is ...

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Номер записи: 3
28-04-2016 дата публикации

HEAT DISSIPATING PLATE DEVICE FOR LIGHT EMITTING DIODE, HEAD LAMP FOR AUTOMOBILE AND METHOD FOR PREPARING THE SAME

Номер: US20160116132A1
Автор: CHANG Bong Jun, CHO Byoung Kyu, Kim Kwang Jin, KIM Yool Koo
Принадлежит:

A heat dissipating plate for a light emitting diode (LED) includes a metal thin film containing a hydroxyl functional group (—OH). A coating layer is disposed on at least one surface of the metal thin film and includes a carbon nanotube containing a hydrophilic functional group. The coating layer is attached to the metal thin film by bonding the hydroxyl functional group with the hydrophilic functional group in a hydrogen bond. 1. A heat dissipating plate for a light emitting diode (LED) comprising:a metal thin film containing a hydroxyl functional group (—OH); anda coating layer disposed on at least one surface of the metal thin film, and comprising a carbon nanotube containing a hydrophilic functional group.2. The heat dissipating plate of claim 1 , wherein a bonding energy of the hydrogen bond is about 15 KJ/mol to 40 KJ/mol.3. The heat dissipating plate of claim 1 , wherein the hydrophilic functional group is a carboxyl functional group (—COOH).4. The heat dissipating plate of claim 1 , wherein a thickness of the coating layer is about 10 to 100 μm.5. The heat dissipating plate of claim 1 , wherein an average diameter of the carbon nanotube is about 10 to 30 nm.6. The heat dissipating plate of claim 1 , wherein an average length of the carbon nanotube is about 1 to about 20 μm.7. The heat dissipating plate of claim 1 , wherein the metal thin film is a thin film of a metal selected from aluminum claim 1 , iron claim 1 , copper claim 1 , nickel silver claim 1 , tin claim 1 , zinc claim 1 , tungsten claim 1 , and a combination thereof.8. The heat dissipating plate of claim 1 , wherein the metal thin film further comprises a plurality of protruded heat dissipating fins.9. The heat dissipating plate of claim 8 , wherein the heat dissipating fins are selected from aluminum claim 8 , iron claim 8 , copper claim 8 , nickel silver claim 8 , tin claim 8 , zinc claim 8 , tungsten claim 8 , and a combination thereof.10. A head lamp for an automobile comprising the heat ...

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Номер записи: 4
08-08-2019 дата публикации

METHOD OF APPLYING PTFE COATING SOLUTION AND VEHICLE PART COATED WITH PTFE COATING SOLUTION

Номер: US20190241760A1
Автор: KIM Yool Koo
Принадлежит:

A method of applying a PTFE (polytetrafluoroethylene) solution includes a dispersion step of dispersing a diamond powder in an organic solvent using bead milling to manufacture a dispersion solution, a mixing step of mixing a silane solution with the dispersion solution to manufacture a mixture solution, an addition step of adding the PTFE solution including PTFE particles having a size of 0.1 to 6 μm to the mixture solution to manufacture a coating solution, a coating step of applying the manufactured coating solution on a surface of a piston skirt to form a coated layer including a plurality of dimples distributed thereon, and a curing step of drying and heat-treating the coated layer. 1. A vehicle part coated with a PTFE coating solution , the vehicle part comprising:a piston skirt; anda coated layer formed on a surface of the piston skirt using a coating solution which includes a dispersion solution including diamond powder dispersed in an organic solvent, a silane solution, and a PTFE solution including PTFE (polytetrafluoroethylene) particles having a size of 0.1 to 6 μm.2. The vehicle part of claim 1 , wherein a plurality of dimples each having a diameter of 50 to 350 μm is distributed on a surface of the coated layer.3. The vehicle part of claim 2 , wherein a density of the plurality of distributed dimples is 0.5 to 10 dimples/mm. The present application is a divisional patent application of U.S. patent application Ser. No. 15/179,608, filed Jun. 10, 2016, which claims the benefit of priority to Korean Patent Application No. 10-2015-0176374, filed Dec. 10, 2015 the entire contents of which are incorporated herein for all purposes by their reference.The present disclosure relates to a method of applying a PTFE coating solution to control a particle size of the PTFE solution to form a coated layer, the layer including a plurality of dimples formed on a surface thereof whereby the dimples act as oil pockets.Pistons are parts that are vulnerable to friction, and ...

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Номер записи: 5
21-07-2020 дата публикации

Method of applying PTFE coating solution and vehicle part coated with PTFE coating solution

Номер: US10717891B2
Автор: Yool Koo Kim
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A method of applying a PTFE (polytetrafluoroethylene) solution includes a dispersion step of dispersing a diamond powder in an organic solvent using bead milling to manufacture a dispersion solution, a mixing step of mixing a silane solution with the dispersion solution to manufacture a mixture solution, an addition step of adding the PTFE solution including PTFE particles having a size of 0.1 to 6 μm to the mixture solution to manufacture a coating solution, a coating step of applying the manufactured coating solution on a surface of a piston skirt to form a coated layer including a plurality of dimples distributed thereon, and a curing step of drying and heat-treating the coated layer.

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Номер записи: 6