KR20050028418A - Pulverulent body paints with nano silver - Google Patents

Pulverulent body paints with nano silver Download PDF

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Publication number
KR20050028418A
KR20050028418A KR1020030064644A KR20030064644A KR20050028418A KR 20050028418 A KR20050028418 A KR 20050028418A KR 1020030064644 A KR1020030064644 A KR 1020030064644A KR 20030064644 A KR20030064644 A KR 20030064644A KR 20050028418 A KR20050028418 A KR 20050028418A
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nano silver
cfu
powder coating
coating
weight
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KR1020030064644A
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Korean (ko)
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KR100534544B1 (en
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김태화
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주식회사 대우일렉트로닉스
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/03—Powdery paints
    • C09D5/033—Powdery paints characterised by the additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/68—Particle size between 100-1000 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plant Pathology (AREA)
  • Paints Or Removers (AREA)

Abstract

A powder paint using nano silver having an antimicrobial function is provided, which exterminates mold or harmful bacteria and can prevent the harmful bacterial from increasing. The powder paint comprises 30-35wt% of a polyester resin, 25-30wt% of an epoxy resin, 25-35wt% of a pigment, a small amount of additives to improve physical properties of the paint, and 0.2-0.5wt% of the nano silver having a particle size of 10-200nm. The powder paint can prevent a bad smell and a pollution caused by the harmful bacteria.

Description

나노 실버를 이용한 분체 도료{pulverulent body paints with nano silver}Powder coating using nano silver {pulverulent body paints with nano silver}

본 발명은 도료에 관한 것으로, 상세하게는 분체 도료의 조성물에 나노 실버 미립자를 함유시킴으로써 나노 실버의 항균효과에 의해 도막으로부터 곰팡이나 유해 세균을 소멸시키고, 장시간 경과시에도 도막으로부터 유해 미생물의 증식을 방지할 수 있는 것으로, 특히 냉장고나 전자렌지와 같은 가전제품의 도료로서 적합하도록 구성한 것이다.The present invention relates to a paint. Specifically, by incorporating nano silver fine particles into the powder coating composition, the antimicrobial effect of nano silver eliminates mold and harmful bacteria from the coating, and prolongs the growth of harmful microorganisms from the coating even after a long time. It can prevent, and it is comprised so that it may be suitable especially as the paint of home appliances, such as a refrigerator and a microwave oven.

일반적으로 강판을 포함한 금속판재나 수지재의 표면으로는 부식 및 소재의 열화방지를 위한 코팅 등이 선행되는데, 특히 냉장고 및 전자렌지나 세탁기 등의 가전제품에서는 표면의 산화방지는 물론, 미감을 높이기 위한 수단으로서 분체 도료를 이용한 코팅 등을 실시한다.In general, the surface of the metal sheet or resin material including the steel sheet is preceded by a coating for preventing corrosion and deterioration of the material.In particular, in household appliances such as refrigerators and microwave ovens or washing machines, the surface is prevented from being oxidized and the aesthetics are increased. Coating is performed using powder coating as a means.

한편, 상기한 바와 같은 기기의 표면 코팅시에는 폴리에스터 레진 및 에폭시 레진과 같은 레진계 조성물을 주성분으로 하여 안료 및 기타 첨가제가 함유된 분체 도료를 유기용제나 물에 배합하여 도장면으로 고압 분사시켜 코팅작업을 실시하며, 이와 같은 과정에 따라 표면에 코팅된 분체 도료는 코팅후 자연건조나 히터를 이용한 가열에 따라 용제가 증발됨으로써 도막이 형성된다.On the other hand, when coating the surface of the device as described above, the resin-based composition, such as polyester resin and epoxy resin as a main component, the powder coating containing pigments and other additives are mixed with an organic solvent or water and sprayed with high pressure to the coating surface Coating is carried out, the powder coating coated on the surface according to this process is a coating film is formed by evaporation of the solvent in accordance with natural drying or heating using a heater after coating.

상기한 과정에 따라 냉장고 및 전자렌지나 세탁기 등의 표면에 고착된 도막은 금속판재의 산화나 자외선에 의한 수지재의 열화 등을 방지하고, 경도를 증가시킴으로써 외부 물체와의 직접 접촉에 따른 손상 등을 방지한다.The coating film adhered to the surface of the refrigerator, microwave oven, washing machine, etc. according to the above process prevents oxidation of the metal sheet or deterioration of the resin material due to ultraviolet rays, and increases the hardness to prevent damage due to direct contact with external objects. prevent.

한편, 상기한 피막은 금속이나 수지재의 표면에 대한 손상을 방지하고, 미감을 높이는 기능을 수행하는 반면, 항균기능을 갖지 않은 관계로 표면에 대한 적절한 세척이 이루어지지 않을 경우 곰팡이나 세균과 같은 유해 미생물이 증식된다.On the other hand, the film is to prevent damage to the surface of the metal or resin material, and to enhance the aesthetics, while not having an antibacterial function, if not properly cleaned on the surface harmful such as mold or bacteria Microorganisms multiply.

특히 전자렌지나 냉장고와 같이 음식물의 조리나 저장이 이루어지는 기기에서는 이와 같은 유해 미생물에 의해 악취가 발생과 함께 음식물이 오염되는 등의 문제점이 따르며, 세탁기와 같이 수분에 노출된 부위에서는 곰팡이를 포함하여 유해 미생물이 급격히 증식되는 등의 많은 문제점이 발생한다.In particular, in a device where food is cooked or stored, such as a microwave oven or a refrigerator, such odors are caused by such harmful microorganisms, and the food is contaminated. Many problems arise, such as the rapid growth of harmful microorganisms.

본 발명은 상기한 바와 같은 종래의 문제점을 해결하기 위한 것으로, 본 발명의 기술적 과제는 분체 도료의 조성물에 항균기능을 갖는 나노 실버 미립자를 함유시켜 상기한 나노 실버의 항균효과에 의해 도막으로부터 곰팡이나 유해 세균을 소멸시키고, 코팅후 장시간 경과시에도 도막으로부터 유해 미생물의 증식을 방지할 수 있는 수단을 제공하는 것이다.The present invention is to solve the conventional problems as described above, the technical problem of the present invention by containing the nano-silver fine particles having an antimicrobial function in the powder coating composition by the antimicrobial effect of the above-mentioned nano-silver from the coating film It is to provide a means for extinguishing harmful bacteria and preventing the growth of harmful microorganisms from the coating film even after a long time after coating.

상기한 바와 같은 본 발명의 기술적 과제는,Technical problem of the present invention as described above,

폴리에스터 레진 및 에폭시 레진을 주성분으로 한 분체 도료에 있어서,In powder coating based on polyester resin and epoxy resin,

상기 분체 도료의 조성물에 나노 실버를 함유시킨 것을 특징을 하는 나노 실버를 이용한 분체 도료를 제공함으로써 달성된다. It is achieved by providing a powder coating using nano silver, wherein the composition of the powder coating contains nano silver.

이하, 본 발명에 의한 나노 실버를 이용한 분체 도료를 상세히 설명한다.Hereinafter, the powder coating using nano silver according to the present invention will be described in detail.

본 발명에 의한 나노 실버를 이용한 분체 도료는 통상적인 조성의 분체 도료와 같이 전자렌지, 냉장고 및 세탁기와 같은 가전기기의 금속판재나 수지재의 판재 등의 내구성을 증대시키는 한편, 조성물에 함유된 안료에 의해 금속판재나 수지재의 판재를 착색시켜 미감을 높이는 기능을 수행한다.Powder coating using nano silver according to the present invention, like the powder coating of the conventional composition increases the durability of the metal plate of the household appliances such as microwave oven, refrigerator and washing machine, plate of the resin material, etc. Thereby coloring the metal plate or the plate of the resin material to enhance the aesthetics.

상기한 바와 같은 본 발명은 30 내지 35 중량%의 폴리에스터 레진, 25 내지 30중량%의 에폭시 레진과 25 내지 35 중량%의 안료를 주원료로 하며, 이와 함께 도료의 물리적 성능을 개선하기 위한 미량의 첨가제가 함유된다.As described above, the present invention is composed of 30 to 35% by weight of polyester resin, 25 to 30% by weight of epoxy resin and 25 to 35% by weight of pigment, and together with a trace amount for improving the physical performance of the paint. Additives are contained.

이와 함께 10 내지 200 ㎚의 입도를 갖는 나노 실버가 0.2 내지 0.5 중량%의 비율로 함유된다.Along with this, nano silver having a particle size of 10 to 200 nm is contained at a ratio of 0.2 to 0.5% by weight.

상기한 바와 같이 10 내지 200 ㎚의 입도를 갖는 나노 실버는 콜로이드 형태의 은(Ag) 미립자로서 은의 전기적 부하에 의해 바이러스나 박테리아, 곰팡이와 같은 미생물의 생식 기능을 억제함으로써 미생물의 증식을 제한하는 한편, 세포 속으로 침투하여 미생물의 호흡시 필요한 효소의 기능을 정지시킴으로써 신진대사를 막아 살균이 이루어지도록 한다.As described above, nano silver having a particle size of 10 to 200 nm is a colloidal silver (Ag) fine particle, which restricts the growth of microorganisms by inhibiting the reproductive function of microorganisms such as viruses, bacteria and fungi by the electrical load of silver. Inhibits metabolism by penetrating into cells and stopping the function of enzymes required for microbial respiration.

상기한 구조를 갖는 본 발명의 작용 및 효과를 이하에서 설명한다.The operation and effects of the present invention having the above structure will be described below.

본 발명에 의한 나노 실버를 이용한 분체 도료는 전자렌지, 냉장고 및 세탁기와 같은 가전기기를 구성하는 금속판재나 수지재의 판재 등의 표면에 코팅되어 내구성을 증대시키는 한편, 함유된 안료의 색상에 따라 금속판재나 수지재의 판재를 착색시켜 미감을 높인다.Powder coating using nano silver according to the present invention is coated on the surface of a metal plate or a resin plate constituting a home appliance such as a microwave oven, a refrigerator and a washing machine to increase durability, and according to the color of the pigment contained Coloring the board or the board of the resin material enhances the aesthetics.

특히 이와 같은 본 발명은 항균효과를 갖는 10 내지 200 ㎚의 입도를 갖는 나노 실버가 0.2 내지 0.5 중량%의 비율로 함유된다.In particular, the present invention contains nano silver having a particle size of 10 to 200 nm having an antimicrobial effect in a ratio of 0.2 to 0.5% by weight.

상기한 나노 실버는 금속판재나 수지재의 판재 표면으로 분사되어 도막을 형성한 상태에서 유해 미생물의 생식 기능을 억제하여 미생물의 증식을 제한하고, 살균시킴으로써 유해 미생물에 의한 악취의 발생과 오염을 방지한다.The nano silver is sprayed onto the surface of the metal plate or resin plate to suppress the reproductive function of the harmful microorganisms in the state of forming a coating film to limit the growth of the microorganisms and sterilize to prevent the occurrence of odor and contamination by the harmful microorganisms. .

아래의 표는 대장균, 황색 포도상구균 및 살모넬라균에 대한 나노 실버의 항균력을 나타낸 한국소비과학연구센타의 실험값으로, 대장균, 황색 포도상구균 및 살모넬라균의 균주를 온도 35 ±1℃, 상대습도 90 ±5% 에서 24 ±1시간 배양하고, 상기한 각 균주에 대한 항균력을 나노 실버가 함유되지 않은 대조시료와 비교한 실험한 것이다.The table below shows the experimental results of the Korea Consumer Science Research Center, which shows the antimicrobial activity of nano silver against E. coli, Staphylococcus aureus and Salmonella. The strains of E. coli, Staphylococcus aureus and Salmonella are tested at a temperature of 35 ± 1 ℃ and a relative humidity of 90 ±. Incubated at 24 ± 1 hours at 5%, and the antimicrobial activity for each strain described above was compared to the control sample containing no nano silver.

표 1은 대장균에 대한 대조시료와 0.25 중량%의 나노 실버가 함유된 시료 및 0.36 중량%의 나노 실버가 함유된 시료를 배양했을 경우 증식 또는 감소된 대장균의 항균 실험값으로서, 나노 실버가 함유되지 않은 대조 시료에서는 1.8 ×105 CFU/㎖의 균주 및 1.6 ×105 CFU/㎖의 균주가 24시간의 배양후 5.8 ×106 CFU/㎖ 및 5.7 ×106 CFU/㎖으로 각각 증식된다.Table 1 shows the antimicrobial values of E. coli grown or reduced when the control sample for E. coli, 0.25% by weight of nano silver and 0.36% by weight of nano silver were incubated. In the control sample, 1.8 × 10 5 CFU / ml strain and 1.6 × 10 5 CFU / ml strain were propagated to 5.8 × 10 6 CFU / ml and 5.7 × 10 6 CFU / ml, respectively, after 24 hours of culture.

반면, 0.25 중량%의 나노 실버가 함유된 시료에서는 1.8 ×105 CFU/㎖의 균주 및 1.6 ×105 CFU/㎖의 균주가 각각 2.3 ×104 CFU/㎖ 및 2.9 ×104 CFU/㎖로 감소한다.On the other hand, in the sample containing 0.25% by weight of nano silver, 1.8 × 10 5 CFU / mL and 1.6 × 10 5 CFU / mL strains were 2.3 × 10 4 CFU / mL and 2.9 × 10 4 CFU / mL, respectively. Decreases.

또한 0.36 중량%의 나노 실버가 함유된 시료에서는 1.8 ×105 CFU/㎖의 균주 및 1.6 ×105 CFU/㎖의 균주가 각각 10 CFU/㎖ 이하로 감소함으로써 나노 실버의 함유량에 따라 각각 99.6% 내지 99.9%의 감소율을 보인다.In addition, in the sample containing 0.36% by weight of nano silver, the strains of 1.8 × 10 5 CFU / mL and 1.6 × 10 5 CFU / mL were reduced to 10 CFU / mL or less, respectively, according to the content of nano silver, respectively, 99.6% To 99.9% reduction.

(CFU/㎖)                                                            (CFU / mL) SampleSample Incubation TimeIncubation Time 감소율Reduction rate 0Time0Time 24Time24Time 대조시료Control sample 1One 1.8 ×105 1.8 × 10 5 5.8 ×106 5.8 × 10 6 23.2 증가23.2 increase 22 1.6 ×105 1.6 × 10 5 5.7 ×106 5.7 × 10 6 21.5 증가21.5 increase 나노 실버 0.25 중량%Nano silver 0.25 wt% 1One 1.8 ×105 1.8 × 10 5 2.3 ×104 2.3 × 10 4 99.799.7 22 1.6 ×105 1.6 × 10 5 2.9 ×104 2.9 × 10 4 99.699.6 나노 실버 0.36 중량%Nano silver 0.36% by weight 1One 1.8 ×105 1.8 × 10 5 ＜ 10<10 99.999.9 22 1.6 ×105 1.6 × 10 5 ＜ 10<10 99.999.9

이와 함께 황색 포도상구균을 위와 같은 조건하에서 배양할 경우에는 표 2와 같이 나노 실버가 함유되지 않은 대조 시료에서는 1.4 ×105 CFU/㎖의 균주 및 1.3 ×105 CFU/㎖의 균주가 24시간의 배양후 5.1 ×106 CFU/㎖ 및 4.6 ×106 CFU/㎖으로 각각 증식된다.In addition, when Staphylococcus aureus was incubated under the above conditions, as shown in Table 2, 1.4 × 10 5 CFU / mL strains and 1.3 × 10 5 CFU / mL strains were observed in the control sample containing no nano silver as shown in Table 2. After incubation, they were propagated to 5.1 × 10 6 CFU / mL and 4.6 × 10 6 CFU / mL, respectively.

반면, 0.25 중량%의 나노 실버가 함유된 시료에서는 1.4 ×105 CFU/㎖의 균주 및 1.3 ×105 CFU/㎖의 균주가 각각 1.4 ×104 CFU/㎖ 및 1.8 ×104 CFU/㎖로 감소한다.On the other hand, in the sample containing 0.25% by weight of nano silver, the strains of 1.4 × 10 5 CFU / mL and 1.3 × 10 5 CFU / mL were 1.4 × 10 4 CFU / mL and 1.8 × 10 4 CFU / mL, respectively. Decreases.

또한 0.36 중량%의 나노 실버가 함유된 시료에서는 1.4 ×105 CFU/㎖의 균주 및 1.3 ×105 CFU/㎖의 균주가 각각 10 CFU/㎖ 이하로 감소함으로서 나노 실버의 함유량에 따라 각각 99.7% 내지 99.9%의 감소율을 보인다.In addition, in the sample containing 0.36% by weight of nano silver, 1.4 × 10 5 CFU / mL strain and 1.3 × 10 5 CFU / mL strain were respectively 10 By decreasing to less than CFU / ㎖ shows a reduction rate of 99.7% to 99.9%, respectively, depending on the content of nano silver.

(CFU / ㎖)                                                          (CFU / ml) SampleSample Incubation TimeIncubation Time 감소율Reduction rate 0Time0Time 24Time24Time ControlControl 1One 1.4 ×105 1.4 × 10 5 5.1 ×106 5.1 × 10 6 25.2 증가25.2 increase 22 1.3 ×105 1.3 × 10 5 4.6 ×106 4.6 × 10 6 21.9 증가21.9 increase 나노 실버 0.25 중량%Nano silver 0.25 wt% 1One 1.4 ×105 1.4 × 10 5 1.4 ×104 1.4 × 10 4 99.899.8 22 1.3 ×105 1.3 × 10 5 1.8 ×104 1.8 × 10 4 99.799.7 나노 실버 0.36 중량%Nano silver 0.36% by weight 1One 1.4 ×105 1.4 × 10 5 ＜ 10<10 99.999.9 22 1.3 ×105 1.3 × 10 5 ＜ 10<10 99.999.9

계속해서 살모넬라균을 배양할 경우에는 표 3과 같이 나노 실버가 함유되지 않은 대조 시료에서는 1.5 ×105 CFU/㎖의 균주 및 1.6 ×105 CFU/㎖의 균주가 24시간의 배양후 5.0 ×106 CFU/㎖ 및 5.5 ×106 CFU/㎖으로 각각 증식된다.In the case of culturing Salmonella, 1.5 × 10 5 CFU / mL and 1.6 × 10 5 CFU / mL strains were 5.0 × 10 after 24 hours of incubation in the control sample containing no nano silver as shown in Table 3. Multiply at 6 CFU / mL and 5.5 × 10 6 CFU / mL, respectively.

반면, 0.25 중량%의 나노 실버가 함유된 시료에서는 1.5 ×105 CFU/㎖의 균주 및 1.6 ×105 CFU/㎖의 균주가 각각 1.3 ×104 CFU/㎖ 및 2.1 ×104 CFU/㎖로 감소한다.On the other hand, in the sample containing 0.25% by weight of nano silver, 1.5 × 10 5 CFU / mL and 1.6 × 10 5 CFU / mL strains were 1.3 × 10 4 CFU / mL and 2.1 × 10 4 CFU / mL, respectively. Decreases.

한 0.36 중량%의 나노 실버가 함유된 시료에서는 1.5 ×105 CFU/㎖의 균주 및 1.6 ×105 CFU/㎖의 균주가 각각 10 CFU/㎖ 이하로 감소함으로서 나노 실버의 함유량에 따라 각각 99.7% 내지 99.9%의 감소율을 보인다.In a sample containing 0.36% by weight of nanosilver, 1.5 × 10 5 CFU / mL and 1.6 × 10 5 CFU / mL By decreasing to less than CFU / ㎖ shows a reduction rate of 99.7% to 99.9%, respectively, depending on the content of nano silver.

(CFU / ㎖)                                                          (CFU / ml) SampleSample Incubation TimeIncubation Time 감소율Reduction rate 0Time0Time 24Time24Time ControlControl 1One 1.5 ×105 1.5 × 10 5 5.0 ×106 5.0 × 10 6 23.2 증가23.2 increase 22 1.6 ×105 1.6 × 10 5 5.5 ×106 5.5 × 10 6 21.5 증가21.5 increase 나노 실버 0.25 중량%Nano silver 0.25 wt% 1One 1.5 ×105 1.5 × 10 5 1.3 ×104 1.3 × 10 4 99.799.7 22 1.6 ×105 1.6 × 10 5 2.1 ×104 2.1 × 10 4 99.699.6 나노 실버 0.36 중량%Nano silver 0.36% by weight 1One 1.5 ×105 1.5 × 10 5 ＜ 10<10 99.999.9 22 1.6 ×105 1.6 × 10 5 ＜ 10<10 99.999.9

위의 실험값을 통해 알 수 있는 바와 같이 본 발명은 우수한 항균력을 갖는 나노 실버가 함유됨으로써 전자렌지, 냉장고 및 세탁기와 같은 가전기기를 구성하는 금속판재나 수지재의 판재 등의 표면에 코팅된 상태에서 도막으로부터 유해 미생물의 증식이 차단됨으로써 장시간 사용시에도 악취의 발생을 차단하며, 이와 함께 유해 미생물의 오염을 방지한다.As can be seen from the above experimental value, the present invention is a coating film in the state of being coated on the surface of the metal plate or resin plate constituting the home appliance such as microwave oven, refrigerator and washing machine by containing nano silver having excellent antimicrobial activity By preventing the proliferation of harmful microorganisms from the block of odor even when used for a long time, and also prevent the contamination of harmful microorganisms.

한편, 본 실시예에서는 본 발명의 사용대상으로 전자렌지, 냉장고 및 세탁기와 같은 가전기기를 예로 하였으나 이와 같은 가전기기는 물론, 각종 의료기기와 주방기기의 내외부 착색제로 활용하여 유해 미생물을 소멸시킴으로써 안전성의 개선이 가능하다.On the other hand, in the present embodiment, home appliances such as a microwave oven, a refrigerator, and a washing machine are used as the object of the present invention. However, the home appliance may be used as a colorant in and out of various medical devices and kitchen appliances to destroy harmful microorganisms. Improvement is possible.

이상에서 설명한 바와 같이 본 발명에 의한 나노 실버를 이용한 분체 도료는 조성물에 함유된 나노 실버 미립자의 항균효과에 의해 도막으로부터 곰팡이나 유해 세균을 소멸시킴으로써 장시간 경과시에도 도막으로부터 유해 미생물의 증식을 방지하는 한편, 이에 따라 악취의 발생과 유해 미생물에 의한 오염 등을 방지하는 등의 많은 효과가 있다.As described above, the powder coating using the nano silver according to the present invention prevents the growth of harmful microorganisms from the coating even after a long time by extinction of mold or harmful bacteria from the coating by the antimicrobial effect of the nano silver particles contained in the composition. On the other hand, there are many effects such as prevention of the generation of odor and contamination by harmful microorganisms.

이상에서는 본 발명을 특정의 바람직한 실시예에 대하여 도시하고 설명하였으나 본 발명은 상기한 실시예에 한정되지 아니하며, 특허청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형이 가능할 것이다.While the invention has been shown and described with respect to certain preferred embodiments, the invention is not limited to the embodiments described above, it is common in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Anyone with knowledge will be able to make various variations.

Claims (3)

폴리에스터 레진 및 에폭시 레진을 주성분으로 한 분체 도료에 있어서,In powder coating based on polyester resin and epoxy resin, 상기 분체 도료의 조성물에 나노 실버를 함유시킨 것을 특징으로 하는 나노 실버를 이용한 분체 도료.Powder coating using nano silver, characterized by containing nano silver in the composition of the powder coating. 제 1항에 있어서, 상기 나노 실버는 10 내지 200 ㎚의 입도를 갖는 것을 특징으로 하는 나노 실버를 이용한 분체 도료.The powder coating material of claim 1, wherein the nano silver has a particle size of 10 to 200 nm. 제 1항에 있어서, 상기 나노 실버는 0.2 내지 0.5 중량%의 비율로 함유되는 것을 특징을 하는 나노 실버를 이용한 분체 도료.The powder coating material of claim 1, wherein the nano silver is contained at a ratio of 0.2 to 0.5 wt%.
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KR101320928B1 (en) * 2013-05-21 2013-10-23 주식회사 쏘피체 Thermosetting powder coating compositions for antibacteria

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101320928B1 (en) * 2013-05-21 2013-10-23 주식회사 쏘피체 Thermosetting powder coating compositions for antibacteria

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