DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a technology for developing a functional super water-repellent stainless steel surface for improving corrosion resistance, and the method for forming a corrosion resistant oxide film on a stainless steel surface according to the present invention can form a uniform porous oxide film even without a conventional pre-patterning process for forming a uniform porous oxide film, and further has effects of remarkably excellent super-hydrophobicity and corrosion resistance even without a pore expansion step after conventional anodization treatment, and thus manufacturing costs can be reduced.
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
2.
METHOD FOR SIMULTANEOUSLY ACHIEVING SUPERHYDROPHOBIC AND SUPEROLEOPHOBIC SURFACE ON 1000 SERIES ALUMINUM ALLOY IN ANODIC OXIDATION PROCESS WITHOUT PRE-PATTERNING STEP
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
A method for manufacturing a superhydrophilic anodic oxide film on a 1000 series aluminum alloy according to the present invention can manufacture a uniform anodic oxide film even without a pre-patterning step, thereby reducing manufacturing costs, and can impart superhydrophobicity and superoleophobicity to the anodic oxide film due to a coating composition using a cross-linked PDMS derivative represented by chemical formula 1 and an organic solvent in a specific mixing ratio, wherein the coating composition is inexpensive to manufacture and can be applied to the coating of a microstructured oxide film because a coating film thickness can be adjusted from several to several tens of nm.
B05D 5/08 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to an optimal anodized film manufacturing method for generating a uniform POP nanostructure in an aluminum 1000 series alloy without a pre-patterning process, wherein even if a pre-patterning step is omitted, a uniform anodized oxide film can be produced, which not only reduces manufacturing costs, but also has the effect of forming a super-hydrophilic anodized oxide film, and furthermore, the present invention can be useful in a machine learning database for developing 1000 series aluminum alloy surface treatment technology.
METHOD FOR FORMING SIMULTANEOUSLY SUPERHYDROPHOBIC AND SUPEROLEOPHOBIC SURFACE ON 6000-SERIES ALUMINUM ALLOY OMITTING PRE-PATTERNING STEP IN ANODIZATION PROCESS
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
A method for manufacturing a superhydrophilic anodized film on a 6000-series aluminum alloy, according to the present invention, enables the manufacture of a uniform anodized film even without a pre-patterning step, thus reducing manufacturing costs, and can impart superhydrophobicity and superoleophobicity to the anodized film due to a coating composition using a crosslinked PDMS derivative represented by chemical formula 1 and an organic solvent in a specific mixing ratio, wherein the coating composition is prepared at low cost and enables adjustment of the thickness of a coating film to several nanometers to several tens of nanometers, and thus can also be applied to the coating of microstructured oxide films.
B05D 5/08 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for producing an optimal anodic oxide film for creating a uniform POP nanostructure on a 6000 series aluminum alloy without a pre-patterning process. The method can produce a uniform anodic oxide film even without a pre-patterning step, thereby reducing manufacturing costs and having the effect of forming a super-hydrophilic anodic oxide film, and furthermore may be useful in a machine learning database for developing a surface treatment technology for a 6000 series aluminum alloy.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for producing an optimal anodic oxide film for creating a uniform POP nanostructure on a 3000 series aluminum alloy without a pre-patterning process. The method can produce a uniform anodic oxide film even without a pre-patterning step, thereby reducing manufacturing costs and having the effect of forming a super-hydrophilic anodic oxide film, and furthermore may be useful as a machine learning database for developing a surface treatment technology for a 3000 series aluminum alloy.
METHOD FOR SIMULTANEOUSLY ACHIEVING SUPERHYDROPHOBIC AND SUPEROLEOPHOBIC SURFACE ON 3,000 SERIES ALUMINUM ALLOY IN ANODIC OXIDATION PROCESS WITHOUT PRE-PATTERNING STEP
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for simultaneously achieving a superhydrophobic and superoleophobic surface on a 3,000 series aluminum alloy in an anodic oxidation process without a pre-patterning step, wherein a uniform anodic oxide film can be produced even without a pre-patterning step, thus making it possible to reduce manufacturing costs, the anodic oxide film can be imparted with superhydrophobicity and superoleophobicity due to a coating composition in which a cross-linked PDMS derivative represented by chemical formula 1 and an organic solvent are used in a specific mixing ratio, the coating composition has a low manufacturing cost and has the effect of being applicable to the coating of a microstructured oxide film since the coating film thickness can be adjusted to several to several tens of nm, and the method can be useful for creating a machine learning database for developing 3,000 series aluminum alloy surface treatment technology.
B05D 5/08 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
METHOD FOR SIMULTANEOUSLY ACHIEVING SUPERHYDROPHOBIC AND SUPEROLEOPHOBIC SURFACE ON 5,000 SERIES ALUMINUM ALLOY IN ANODIC OXIDATION PROCESS WITHOUT PRE-PATTERNING STEP
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for simultaneously achieving a superhydrophobic and superoleophobic surface on 5,000 series aluminum alloy in an anodic oxidation process without a pre-patterning step, wherein the uniform anodic oxide film can be produced even without a pre-patterning step, thus making it possible to reduce manufacturing costs, the anodic oxide film can be imparted with superhydrophobicity and superoleophobicity according to a coating composition in which a cross-linked PDMS derivative represented by chemical formula 1 and an organic solvent are used in a specific mixing ratio, the coating composition has a low manufacturing cost and the coating film thickness can be adjusted to several to several tens of nm, thus enabling application to the coating of a microstructured oxide film, and the method can be useful for creating a machine learning database for developing 5,000 series aluminum alloy surface treatment technology.
C25D 11/08 - Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
B05D 5/08 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
9.
CONDUCTIVE THIN FILM PRODUCTION METHOD USING EXPANDABLE GRAPHITE
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
PINEMATERIALS CO., LTD. (Republic of Korea)
Inventor
Oh, Weontae
Park, Seong Yeob
Abstract
The present invention relates to a reduced graphene oxide and conductive thin film production method using expandable graphite, enabling the production of reduced graphene oxide and a conductive thin film, the reduced graphene oxide, compared to conventional reduced graphene oxide produced by a chemical exfoliation method using natural graphite, etc., having an electrical conductivity and specific resistance which are improved so as to be at least ten times higher, thereby having excellent electrical properties, and also having exceedingly excellent mechanical properties such as scratch, exfoliation properties, etc., and the conductive thin film produced by the production method of the present invention being usable for an electronic device requiring excellent electrical properties and mechanical properties, such as a supercapacitor, thin-film transistor, secondary battery, fuel cell, solar cell, display device, etc.
H01B 1/24 - Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon, or silicon
H01B 1/04 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Kim, Sung-Hee
Abstract
The present invention relates to a method for making a hydrophobic and oleophobic surface by using a crosslinking PDMS derivative. A method for providing a substrate surface with hydrophobicity and oleophobicity according to the present invention is designed to form hydroxyl groups on a substrate surface through plasma treatment and then apply a crosslinking PDMS derivative in which some substituents on the silicon atoms are hydrogen, whereby the substrate has remarkably improved wettability of a coating agent and can be endowed with sufficient hydrophobicity and oleophobicity without using other additive ingredients, thus finding advantageous applications in vapor recovery units/facilities, pipes, hoods, etc.
B05D 5/08 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
B05C 3/08 - Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material with special provision for agitating the work or the liquid or other fluent material the work and the liquid or other fluent material being agitated together in a container, e.g. tumbled
B05C 9/08 - Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by groups , or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
B05D 3/14 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
B05D 3/02 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for manufacturing an aluminum alloy anodized film having a superhydrophobic surface and an aluminum alloy having an anodized film with a superhydrophobic surface manufactured by the method. The present invention has an economical effect that an aluminum alloy, in which a three-dimensional shaped anodized film structure formed on the surface thereof is controlled in various forms, such as a pillar-on-pore structure, may be manufactured at low costs within a short time. The aluminum alloy with the controlled anodized film structure has excellent superhydrophobicity, corrosion resistance, and thermal conductivity, and thus may be used in various industrial fields, such as electronic device housings, LED lighting covers, heat exchangers, pipes, road structures, automobiles, aircrafts, ships, and generators.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for dyeing an aluminum alloy in order to implement a uniform and vivid color. The method for dyeing an aluminum alloy, according to the present invention, controls, through the control of an anodizing condition and a pore widening time, pore shape, diameter and density of an anodized aluminum layer, which is to be formed on the surface of an aluminum alloy, so as to implement a superhydrophilic hierarchical structure, thereby facilitating coloring of a hydrophilic dye and reducing dyeing time, and since dyeing uniformity, color sharpness and durability are excellent, the present invention can be used in various industrial fields requiring external color implementation, such as that of electronic device housing, covers for lighting such as LED, heat exchangers, pipes, road structures, automobiles, airplanes, ships, and power generators.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to an ultra water-repellent aluminum alloy preparation technique for preventing biofouling and corrosion. According to the present invention, in a method for subjecting a surface of an aluminum alloy for fishing gear to super-hydrophobic treatment, an anodized aluminum layer formed on the surface of aluminum alloy is provided in a pillar-on-pore form through control of adonization voltage and time, whereby the aluminum alloy having a controlled anodized aluminum film structure prepared by the method can be usefully used as a material for fishing gear due to excellent super-hydrophobicity, anti-biofouling, and anti-corrosion properties.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for manufacturing an aluminum anodized film having a pillar-on-pore structured surface and to aluminum coated with an anodized film having a pillar-on-pore structured surface, manufactured using same. In the present invention, an anodized aluminum layer formed on the surface of aluminum is provided with pillar-on-pore forms for pore morphology, diameter, and density through control of anodization voltage and time and etching time by using phosphoric acid as an electrolyte for anodization, whereby a sufficient pore size can be secured without separate pore expansion and tertiary anodization. Thus, the present invention has an advantageous effect of achieving a bundle-type pillar-on-pore structure even though skipping the two processing steps, and has an economic effect of manufacturing aluminum having a controlled 3-dimensional anodized film structure at low cost in a short time.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for manufacturing a 6000-series aluminum alloy anodizing film having a superhydrophobic surface, and a 6000-series aluminum alloy with an anodizing film having a superhydrophobic surface, manufactured using same. Through the adjustment of an anodizing voltage and time and a pore-widening time, an anodizing aluminum layer, which is formed on the surface of an aluminum alloy, is realized in a pillar-on-pore form, and thus there is an economic effect that a three-dimensional aluminum alloy having a controlled anodizing film structure can be manufactured at low cost within a short time, and the aluminum alloy manufactured using the method exhibits excellent superhydrophobicity, corrosion resistance, durability, wear resistance, and thermal conductivity, and thus can be used in various industrial fields such as in exterior cases for a sensor, cutting blades of a cutting tool, electronic device housings, illumination covers for an LED lamp, heat exchangers, pipes, road structures, automobiles, aircraft, ships, and power generators.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to: a method for manufacturing a 6000 series aluminum alloy anodic oxide film having a superhydrophilic surface; and a 6000 series aluminum alloy, on which an anodic oxide film having a superhydrophilic surface is formed, manufactured thereby. The present invention adjusts anodizing voltage and time and pore widening time so as to implement, in a pillar-on-pore form, an anodic aluminum oxide layer to be formed on the surface of an aluminum alloy, and thus has an economical effect of enabling the manufacture, within a short time and at low cost, an aluminum alloy in which the structure of an anodic oxide film having a three-dimensional shape is controlled, wherein the aluminum alloy manufactured by the method has excellent superhydrophilicity, and thus can be used in various industrial fields.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for manufacturing an aluminum alloy anodized film having a superhydrophobic surface and an aluminum alloy having an anodized film with a superhydrophobic surface manufactured by the method. The present invention has an economical effect that an aluminum alloy, in which a three-dimensional shaped anodized film structure formed on the surface thereof is controlled in various forms, such as a pillar-on-pore structure, can be manufactured at low costs within a short time. The aluminum alloy with the controlled anodized film structure has excellent superhydrophobicity, corrosion resistance, and thermal conductivity, and thus can be used in various industrial fields, such as electronic device housings, LED lighting covers, heat exchangers, pipes, road structures, automobiles, aircrafts, ships, and generators.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeong, Chanyoung
Abstract
The present invention relates to a method for manufacturing an aluminum alloy anodized film having a superhydrophobic surface and an aluminum alloy having an anodized film with a superhydrophobic surface manufactured by the method. The present invention has an economical effect that an aluminum alloy, in which a three-dimensional shaped anodized film structure formed on the surface thereof is controlled in various forms, such as a pillar-on-pore structure, can be manufactured at low costs within a short time. The aluminum alloy with the controlled anodized film structure has excellent superhydrophobicity, corrosion resistance, and thermal conductivity, and thus can be used in various industrial fields, such as electronic device housings, LED lighting covers, heat exchangers, pipes, road structures, automobiles, aircrafts, ships, and generators.
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Jeon, Sung-Jong
Park, Jong-Hun
Abstract
IrpexIrpex sp. JS7 strain and a use thereof and, more specifically, to a novel strain isolated from a tree and having laccase activity and a composition for skin whitening, using same. A culture of the strain provided by the present invention directly bleaches and decomposes the melanin in the stratum corneum, which is exposed on the skin, thereby exhibiting a skin whitening effect within a short time. In addition, the culture acts specifically on melanin and as such, can avoid side effects and toxic effects.
COMPOSITION FOR PREVENTING OR TREATING CRANIAL NERVE DISEASE COMPRISING FOMES FOMENTARIUS EXTRACT, FRACTION THEREOF OR COMPOUND ISOLATED THEREFROM AS ACTIVE INGREDIENT
DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Republic of Korea)
Inventor
Hyun, Kyung-Yae
Abstract
The present invention relates to a composition for preventing or treating a cranial nerve disease comprising a Fomes fomentarius extract, a fraction thereof or a compound isolated therefrom as an active ingredient. By including the Fomes fomentarius extract as an active ingredient, the composition of the present invention inhibits the production or expression of an inflammatory cytokine, improves the activity of glucose metabolism of the brain, and thus has an excellent effect in preventing or treating a cranial nerve disease. Also, the composition of the present invention is a natural product having few side effects on the human body, and has an effect in that the composition can be easily prepared and ingested.