KR20220102348A - Photochromic sheet with improved discoloring speed - Google Patents

Photochromic sheet with improved discoloring speed Download PDF

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KR20220102348A
KR20220102348A KR1020210004596A KR20210004596A KR20220102348A KR 20220102348 A KR20220102348 A KR 20220102348A KR 1020210004596 A KR1020210004596 A KR 1020210004596A KR 20210004596 A KR20210004596 A KR 20210004596A KR 20220102348 A KR20220102348 A KR 20220102348A
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oxide
color
layer
discoloration
changing
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권종명
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주식회사 네스포유
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/23—Photochromic filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
    • B32B17/10467—Variable transmission
    • B32B17/10477—Variable transmission thermochromic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/02—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of crystals, e.g. rock-salt, semi-conductors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

The present invention relates to a photochromic sheet that can be discolored by irradiated light. The photochromic sheet can accelerate discoloration by mixing a reduction discoloration material and an oxidation discoloration material and forming a discoloration layer so that an electron detached from the reduction discoloration material is coupled with the oxidation discoloration material. The photochromic sheet can be uniformly discolored as the surface and inside of the discoloration layer are discolored at the same time by the reduction and oxidation discoloration materials uniformly distributed inside the discoloration layer.

Description

향상된 변색속도를 가지는 광 변색시트{Photochromic sheet with improved discoloring speed}Photochromic sheet with improved discoloring speed

본 발명은 조사되는 광에 의하여 변색이 가능한 광 변색시트에 관한 것으로, 보다 상세하게는 환원 변색물질과 산화 변색물질이 혼합하여 변색층을 형성함으로써 조사되는 광 변화에 따른 탈색이 보다 신속하고 균일하게 이루어질 수 있는 광 변색시트에 관한 것이다. The present invention relates to a photochromic sheet that can be discolored by irradiated light, and more particularly, by mixing a reducing color changing material and an oxidizing color changing material to form a color changing layer, discoloration according to irradiated light changes more quickly and uniformly It relates to a photochromic sheet that can be made.

광 변색(Phtochromism)이란 태양광 등이 조사되지 않을 때는 색을 띠고 있지 않다가 태양광이 조사되면 광 여기된 전자에 의해 변색되는 현상으로, 광 변색을 일으키는 물질을 시트 형태로 구현하여 건축용 창유리나 자동차 미러의 광 투과도 또는 반사도를 조절하는 용도로 연구되고 있는데, 최근 에너지 절약형 제품으로의 응용 가능성에 대해서도 큰 관심을 받고 있다.Phtochromism is a phenomenon in which the color is not colored when sunlight is not irradiated, but is discolored by photo-excited electrons when sunlight is irradiated. It is being studied for the purpose of adjusting the light transmittance or reflectivity of automobile mirrors, and recently, the possibility of application to energy-saving products is also receiving great attention.

광 변색시트는 소정 간격을 두고 대향하는 한 쌍의 투명시트 사이에 변색층,광 감응층, 전해질층이 적층되어, 태양광 조사 시 광 감응층에서 여기된 전자와 변색층으로 이동하여 전기화학적 결합에 의하여 착색되며, 태양광이 조사되지 않으면 변색층에서 결합된 전자가 탈리되어 탈색이 이루어진다.In the photochromic sheet, a color-changing layer, a light-sensitive layer, and an electrolyte layer are stacked between a pair of opposing transparent sheets at a predetermined interval, and when sunlight is irradiated, the excited electrons from the photosensitive layer move to the color-changing layer and are electrochemically combined. It is colored by , and when sunlight is not irradiated, electrons bound to the color-changing layer are detached and discoloration occurs.

광 변색소자는 조사되는 광량에 따라 착색속도를 제어할 수 있는 것과 달리, 탈색은 암실과 같이 단순히 조사되는 빛을 차단하여 전자를 여기 시키는 광 구동력을 제거하여 이루어짐에 따라 상대적으로 느린 속도로 진행된다. 또한, 탈색 시 변색층의 표면보다 내부에서 전자의 탈리가 느리게 진행됨에 따라 변색층의 두께에 따른 탈색이 균일한 속도로 이루어지지 않는 문제가 있다. Unlike photochromic devices, which can control the coloration speed according to the amount of light irradiated, discoloration proceeds at a relatively slow speed as it is achieved by simply blocking the irradiated light, such as in a dark room, and removing the light driving force that excites electrons. . In addition, there is a problem in that the discoloration according to the thickness of the discoloration layer is not performed at a uniform speed as the desorption of electrons from the inside proceeds more slowly than the surface of the discoloration layer during discoloration.

대한민국 공개특허 제10-2013-0013225호 (발명의 명칭: 광 변색 필름을 이용한 자동차용 유리）Korean Patent Laid-Open Patent No. 10-2013-0013225 (Title of the invention: Glass for automobile using photochromic film) 대한민국 등록특허 제10-0802891호 (발명의 명칭: 광 변색 필름 또는 판 제조방법)Republic of Korea Patent Registration No. 10-0802891 (Title of the invention: photochromic film or plate manufacturing method)

따라서, 조사되는 광 변화에 따른 탈색이 신속하고 균일하게 이루어질 수 있는 광 변색시트를 제공하는데 그 목적이 있다.Accordingly, an object of the present invention is to provide a photochromic sheet capable of rapidly and uniformly discoloring according to a change in irradiated light.

이와 같은 과제를 달성하기 위하여 본 발명은 투명기재 사이에 변색층, 광 감응층 및 전해질층을 포함하는 광 변색시트로, 변색층은 환원 변색물질과 산화 변색물질이 혼합되어 형성된다.In order to achieve the above object, the present invention is a photochromic sheet including a color-changing layer, a photosensitive layer, and an electrolyte layer between a transparent substrate, and the color-changing layer is formed by mixing a reduction color change material and an oxidation color change material.

이때, 본 발명의 변색층은 환원 변색물질 100 중량부에 대하여 산화 변색물질은 1~20 중량부로 혼합되어 형성된다. At this time, the color-changing layer of the present invention is formed by mixing 1 to 20 parts by weight of the oxidative color-changing material with respect to 100 parts by weight of the reducing color-changing material.

여기서, 본 발명의 환원 변색물질은 티타늄(Ti) 산화물, 구리(Cu) 산화물, 몰리브덴(Mo) 산화물, 텅스텐(W) 산화물, 나이오븀(Nb) 산화물, 탄탈륨(Ta) 산화물 중 선택된 하나 이상을 포함하거나, 바이올로젠(Viologen), 안트라퀴논(Anthraquione), 프탈산에스테르(phthalic acid ester), 폴리 아닐린, 폴리 티오펜 중 선택된 어느 하나 이상을 포함한다. Here, the reductive color change material of the present invention comprises at least one selected from titanium (Ti) oxide, copper (Cu) oxide, molybdenum (Mo) oxide, tungsten (W) oxide, niobium (Nb) oxide, and tantalum (Ta) oxide. or Viologen, anthraquinone, phthalic acid ester, polyaniline, and polythiophene.

그리고, 본 발명의 산화 변색물질은 바나듐(V) 산화물, 크롬(Cr) 산화물, 망간(Mn) 산화물, 철(Fe) 산화물, 코발트(Co) 산화물, 니켈(Ni) 산화물, 로듐(Rh) 산화물, 이리듐(Ir) 산화물 중 선택된 하나 이상을 포함할 수 있다.And, the oxidation color change material of the present invention is vanadium (V) oxide, chromium (Cr) oxide, manganese (Mn) oxide, iron (Fe) oxide, cobalt (Co) oxide, nickel (Ni) oxide, rhodium (Rh) oxide , and may include at least one selected from iridium (Ir) oxide.

본 발명에 따른 광 변색소자는 주 변색물로 환원 변색물질과 함께 산화 변색물질을 혼합하여 변색층을 형성함으로써, 탈색 시 환원 변색물질로부터 탈리된 전자가 산화 변색물질과 결합되어 탈색을 보다 가속화할 수 있으며, 변색층 내부에 균일하게 분산된 산환 변색물질에 의해 변색층 표면은 물론, 내부에서도 변색이 동시에 이루어져 균일하게 탈색될 수 있다. The photochromic device according to the present invention forms a color-changing layer by mixing an oxidative color-changing material with a reducing color-changing material as a surrounding color changer, so that electrons desorbed from the reduced color-changing material are combined with the oxidation color-changing material during decolorization to accelerate discoloration. In addition, by the oxidative color-changing material uniformly dispersed in the color-changing layer, the color change is simultaneously performed on the surface of the color-changing layer as well as inside the color-changing layer, so that the color can be uniformly discolored.

도 1은 본 발명에 따른 광 변색시트의 단면도이다.
도 2는 본 발명의 변색층에 형성되는 환원 변색물질과 산화 변색물질을 모식적으로 도시한 도면이다.
도 3은 탈색 시 본 발명의 변색층 내부에서 이동되는 전자의 상태를 도시한 도면이다.1 is a cross-sectional view of a photochromic sheet according to the present invention.
2 is a view schematically showing the reduction color change material and the oxidation color change material formed on the color change layer of the present invention.
3 is a view showing the state of electrons moving inside the color-changing layer of the present invention during decolorization.

이하, 첨부 도면들을 참조하여 본 발명의 실시 예를 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 실시 예는 당업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위해서 제공되어지는 것으로서, 도면에서의 요소의 형상, 요소의 크기, 요소간의 간격 등은 보다 명확한 설명을 강조하기 위해서 과장되거나 축소되어 표현될 수 있다.This embodiment is provided to more completely explain the present invention to those with average knowledge in the art. may be exaggerated or reduced for

또한, 실시 예를 설명하는데 있어서 원칙적으로 관련된 공지의 기능이나 공지의 구성과 같이 이미 당해 기술 분야의 통상의 기술자에게 자명한 사항으로서 본 발명의 기술적 특징을 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략하기로 한다.In addition, when it is determined that the technical features of the present invention may be unnecessarily obscured as it is already obvious to a person skilled in the art, such as a known function or a known configuration related in principle in describing the embodiment, the detailed description thereof A description will be omitted.

도 1은 본 발명에 따른 광 변색시트(100)의 단면도로, 도 1을 참조하면 본 발명에 따른 광감응 변색시트(100)는 서로 대향하는 한 쌍의 제1,2 투명기재층(10,50)사이에 변색층(20), 광 감응층(30), 전해질층(40)이 적층되어 형성된다.1 is a cross-sectional view of a photochromic sheet 100 according to the present invention. Referring to FIG. 1 , the photosensitive color changeable sheet 100 according to the present invention includes a pair of first and second transparent substrate layers 10, 50), the color-changing layer 20, the light-sensitive layer 30, and the electrolyte layer 40 are stacked.

제1,2 투명기재층(10,50)은 외부로부터 조사되는 태양광이 내부로 투과하도록 광투과율이 95% 이상인 투명 플라스틱 필름이나 유리가 사용될 수 있다. 투명 플라스틱 필름으로는 폴리 에틸렌 테레프탈레이트(PET), 폴리 에틸렌 나프탈레이트(PEN), 폴리카보네이트(PC), 폴리프로필렌(PP), 폴리이미드(PI), 트리아세틸 셀룰로오스(TAC)와 같은 필름이나, FTO, ITO, IZO, AZO와 같은 투명전도 물질이 코팅된 필름이 사용될 수 있다. 제1,2 투명기재층(10,50)은 0.05~5mm 두께로 형성된다. The first and second transparent substrate layers 10 and 50 may be formed of a transparent plastic film or glass having a light transmittance of 95% or more so that sunlight irradiated from the outside is transmitted to the inside. Examples of the transparent plastic film include films such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polypropylene (PP), polyimide (PI), and triacetyl cellulose (TAC), A film coated with a transparent conductive material such as FTO, ITO, IZO, or AZO may be used. The first and second transparent substrate layers 10 and 50 are formed to a thickness of 0.05-5 mm.

변색층(20)은 제1 투명기재층(10)에 형성되어 조사되는 광 변화에 의해 착색 또는 탈색되는 층으로, 광 조사 시 광 감응층(30)에 의해 여기된 전자와 결합하여 착색되는 환원 변색물질과, 광이 조사되지 않을 시 환원 변색물질로부터 탈리되는 전자와 결합하여 탈색을 가속화하는 산화 변색물질이 혼합되어 형성된다.The color-changing layer 20 is a layer that is formed on the first transparent base layer 10 and is colored or discolored by a change in irradiated light, and is colored by combining with electrons excited by the light-sensitive layer 30 when irradiated with light. It is formed by mixing a color-changing material and an oxidative color-changing material that accelerates discoloration by combining with electrons that are desorbed from the reduced color-changing material when not irradiated with light.

이때, 변색층(20)의 주 변색물질로 환원 변색물질이 사용되고, 탈색속도를 보다 가속화하기 위하여 부가적으로 산화 변색물질이 첨가되는데, 도 2에 도시되는 바와 같이 산화 변색물질(22)이 보다 많은 환원 변색물질(21)과 혼합된다. 여기서, 혼합량은 착색 속도를 저하하지 않고 탈색 속도를 향상하도록 환원 변색물질(21) 100 중량부에 대하여 산화 변색물질(22)은 1~20 중량부로 혼합된다. At this time, a reducing color-changing material is used as the peripheral color-changing material of the color-changing layer 20, and an oxidative color-changing material is additionally added to further accelerate the discoloration rate. As shown in FIG. 2, the oxidative color-changing material 22 is more It is mixed with many reducing color change materials (21). Here, the mixing amount is 1 to 20 parts by weight of the oxidation color change material 22 with respect to 100 parts by weight of the reduction color change material 21 to improve the color loss rate without reducing the color rate.

이와 같은 환원 변색물질로는 티타늄(Ti) 산화물, 구리(Cu) 산화물, 몰리브덴(Mo) 산화물, 텅스텐(W) 산화물, 나이오븀(Nb) 산화물, 탄탈륨(Ta) 산화물 중 선택된 하나이상을 포함할 수 있는데, 예를 들어 WO3, TiO2, MO3일 수 있다. 또한, 환원 변색물질로 바이올로젠(Viologen), 안트라퀴논(Anthraquione), 프탈산에스테르(phthalic acid ester), 폴리 아닐린, 폴리 티오펜 중 선택된 하나 이상의 유기 환원변색 물질로 형성될 수도 있다. Such a reducing color change material may include at least one selected from titanium (Ti) oxide, copper (Cu) oxide, molybdenum (Mo) oxide, tungsten (W) oxide, niobium (Nb) oxide, and tantalum (Ta) oxide. For example, it may be WO 3 , TiO 2 , MO 3 . In addition, the reduction color change material may be formed of at least one organic reduction color change material selected from Viologen, anthraquinone, phthalic acid ester, polyaniline, and polythiophene.

그리고, 산화 변색물질로는 바나듐(V) 산화물, 크롬(Cr) 산화물, 망간(Mn) 산화물, 철(Fe) 산화물, 코발트(Co) 산화물, 니켈(Ni) 산화물, 로듐(Rh) 산화물, 이리듐(Ir) 산화물 중 선택된 하나 이상을 포함할 수 있는데, 예를 들어, Ni(OH)2, CoO2, IrO2일 수 있다. In addition, as an oxidative color change material, vanadium (V) oxide, chromium (Cr) oxide, manganese (Mn) oxide, iron (Fe) oxide, cobalt (Co) oxide, nickel (Ni) oxide, rhodium (Rh) oxide, iridium (Ir) may include at least one selected from oxides, for example, Ni(OH) 2 , CoO 2 , IrO 2 It may be.

이와 같은 환원 변색물질과 산환 변색물질은 미세한 나노크기의 입자 형태로 용매에 분산되어 제1 투명기재층(10)에 코팅된다. The reduction color change material and the oxidation color change material are dispersed in a solvent in the form of fine nano-sized particles and coated on the first transparent substrate layer 10 .

광 감응층(30)은 조사되는 광에 의하여 기저상태(Graund State)에서 여기상태(Excitation State)로 여기된 전자를 변색층(20)으로 공급하는 층으로, 이산화티탄(TiO2), 산화아연(ZnO), 산화니오븀(Nb2O5), 산화주석(SnO2), 아연주석산화물(Zn2SnO4) 또는 스트론튬티타늄산화물(SrTiO3) 중 선택된 어느 하나 이상의 광 감응입자가 용매에 분산되어 변색층(20)에 코팅된다. The photosensitive layer 30 is a layer that supplies electrons excited from a ground state to an excitation state by the irradiated light to the discoloration layer 20 , titanium dioxide (TiO 2 ), zinc oxide. (ZnO), niobium oxide (Nb 2 O 5 ), tin oxide (SnO 2 ), zinc tin oxide (Zn 2 SnO 4 ), or strontium titanium oxide (SrTiO 3 ) Any one or more photosensitive particles selected from is dispersed in a solvent It is coated on the color-changing layer 20 .

전해질층(40)은 광 감응층(30)에서 여기되어 변색층(20)으로 공급되어 소실되는 전자를 공급하도록 광 감응층(30)에 인접하게 마련되는 층으로, PEG계 올리고머, 저분자량의 PEGDMe, 광개시제가 혼합하여 조성될 수 있으며, 여기에 전해질염이 혼합되어 형성된다. 전해질염은 H+, Li+, Na+, K+, Rb+, Cs+를 포함하는 화합물이 사용될 수 있으며, 한 예로 LiClO4, LiBF4, LiAsF6, 또는 LiPF6 와 같은 리튬염 화합물이 사용될 수 있다. 이와 같은 전해질층(40)은 자외선 경화 또는 열 경화되어 광 감응층(30)과 제2 투명기재(50) 사이에 형성된다. The electrolyte layer 40 is a layer provided adjacent to the photosensitive layer 30 so as to supply electrons that are excited by the photosensitive layer 30 and supplied to the discoloration layer 20 to be lost. PEG-based oligomer, low molecular weight PEGDMe and a photoinitiator may be mixed to form the composition, and an electrolyte salt is mixed thereto. As the electrolyte salt, a compound containing H + , Li + , Na + , K + , Rb + , Cs + may be used. For example, a lithium salt compound such as LiClO 4 , LiBF 4 , LiAsF 6 , or LiPF 6 may be used. can The electrolyte layer 40 is UV-cured or heat-cured to form between the photosensitive layer 30 and the second transparent substrate 50 .

이와 같이 이루어지는 본 발명에 따른 광 변색시트의 동작은 다음과 같다. The operation of the photochromic sheet according to the present invention made as described above is as follows.

제1 투명기재층(10)을 투과한 빛이 광 감응층(30)의 광 감응입자로 입사하면 광 감응입자 내의 전자가 기저상태로부터 여기하여 변색층(20)으로 이동하여 환원 변색물질(21)과 결합되어 변색되며, 이와 동시에 광 감응층(30)은 접하고 있는 전해질층(40)으로부터 전자를 공급받아 변색층(20)으로 지속적으로 전달하여, 변색층(20)을 변색시킨다.When the light passing through the first transparent substrate layer 10 is incident on the photosensitive particles of the photosensitive layer 30, electrons in the photosensitive particles are excited from the ground state and move to the color-changing layer 20 to form a reduced color change material 21 ) and discoloration, and at the same time, the photosensitive layer 30 receives electrons from the contacting electrolyte layer 40 and continuously transmits the electrons to the discoloration layer 20 to discolor the discoloration layer 20 .

이와 같이 변색된 광 변색시트를 광을 조사하지 않고 탈색시키면, 도 3에 도시된 바와 같이 환원 변색물질(21)에 결합된 전자(23)가 탈리되면서 환원 변색물질(21)의 산화반응에 의하여 탈색됨과 동시에, 환원 변색물질(21)로부터 탈리된 일부 전자(23)가 산화 변색물질(22)과 결합되어 환원반응에 의하여 탈색이 이루어져, 환원 변색물질(21)과 산화 변색물질(22)에 의한 탈색이 동시에 일어나게 되어 탈색이 가속화된다. When the discolored photochromic sheet is decolorized without irradiating light as described above, as shown in FIG. 3 , electrons 23 bound to the reducing color changing material 21 are desorbed and by oxidation reaction of the reducing color changing material 21 . Simultaneously with the decolorization, some electrons 23 desorbed from the reducing color change material 21 are combined with the oxidation color change material 22 to decolorize by a reduction reaction, and the reduction color change material 21 and the oxidation color change material 22 are separated from each other. The discoloration occurs at the same time, and the discoloration is accelerated.

이와 같이 본 발명의 광 변색시트는 주 변색물로 환원 변색물질과 함께 산화 변색물질을 혼합하여 변색층을 형성함으로써, 탈색 시 환원 변색물질로부터 탈리된 전자가 산화 변색물질과 결합되어 탈색을 보다 가속화할 수 있으며, 변색층 내부에 균일하게 분산된 산환 변색물질에 의해 변색층 표면은 물론, 내부에서도 변색이 동시에 이루어져 균일하게 탈색될 수 있다. As described above, the photochromic sheet of the present invention forms a color-changing layer by mixing an oxidative color-changing material with a reducing color-changing material as a surrounding color changer, so that electrons desorbed from the reduction color-changing material are combined with the oxidative color-changing material during decolorization to accelerate discoloration. The discoloration can be performed simultaneously on the surface of the discoloration layer as well as inside the discoloration layer by the oxidative cyclic discoloration material uniformly dispersed in the discoloration layer, so that the discoloration can be uniformly performed.

이상과 같이 설명한 본 발명은 기재된 실시 예에 한정되는 것은 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서 그러한 변형예 또는 수정예들은 본 발명의 특허청구범위에 속한다 해야 할 것이다.The present invention described above is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, it should be said that such variations or modifications fall within the scope of the claims of the present invention.

10 : 제1 투명기재층 20 : 변색층
21 : 환원 변색물질 22 : 산화 변색물질
23 : 전자 30 : 광 감응층
40 : 전해질층 50 : 제2 투명기재층
100 : 광 변색시트10: first transparent base layer 20: discoloration layer
21: reduction color change material 22: oxidation color change material
23: electron 30: light-sensitive layer
40: electrolyte layer 50: second transparent base layer
100: photochromic sheet

Claims (5)

투명기재 사이에 변색층, 광 감응층 및 전해질층을 포함하는 광 변색시트에 있어서,
상기 변색층은 환원 변색물질과 산화 변색물질이 혼합되어 형성되는 것을 특징으로 하는 광 변색시트.In the photochromic sheet comprising a color-changing layer, a light-sensitive layer and an electrolyte layer between the transparent substrate,
The color-changing layer is a photochromic sheet, characterized in that formed by mixing a reducing color-changing material and an oxidative color-changing material. 제1항에 있어서,
상기 변색층은,
상기 환원 변색물질 100 중량부에 대하여 상기 산화 변색물질은 1~20 중량부로 혼합되어 형성되는 것을 특징으로 하는 광 변색시트.According to claim 1,
The discoloration layer is
The photochromic sheet, characterized in that formed by mixing 1 to 20 parts by weight of the oxidative color-changing material with respect to 100 parts by weight of the reducing color-changing material. 제2항에 있어서,
상기 환원 변색물질은,
티타늄(Ti) 산화물, 구리(Cu) 산화물, 몰리브덴(Mo) 산화물, 텅스텐(W) 산화물, 나이오븀(Nb) 산화물, 탄탈륨(Ta) 산화물 중 선택된 하나 이상을 포함하는 것을 특징으로 하는 광 변색시트.3. The method of claim 2,
The reduced color change material,
Photochromic sheet comprising at least one selected from titanium (Ti) oxide, copper (Cu) oxide, molybdenum (Mo) oxide, tungsten (W) oxide, niobium (Nb) oxide, and tantalum (Ta) oxide . 제2항에 있어서,
상기 환원 변색물질은,
바이올로젠(Viologen), 안트라퀴논(Anthraquione), 프탈산에스테르(phthalic acid ester), 폴리 아닐린, 폴리 티오펜 중 선택된 어느 하나 이상을 포함하는 것을 특징으로 하는 광 변색시트.3. The method of claim 2,
The reduced color change material,
A photochromic sheet comprising at least one selected from Viologen, anthraquinone, phthalic acid ester, polyaniline, and polythiophene. 상기 산화 변색물질은,
바나듐(V) 산화물, 크롬(Cr) 산화물, 망간(Mn) 산화물, 철(Fe) 산화물, 코발트(Co) 산화물, 니켈(Ni) 산화물, 로듐(Rh) 산화물, 이리듐(Ir) 산화물 중 선택된 하나 이상을 포함하는 것을 특징으로 하는 광 변색시트.The oxidative color change material is
One selected from vanadium (V) oxide, chromium (Cr) oxide, manganese (Mn) oxide, iron (Fe) oxide, cobalt (Co) oxide, nickel (Ni) oxide, rhodium (Rh) oxide, and iridium (Ir) oxide A photochromic sheet comprising the above.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100802891B1 (en) 2005-09-06 2008-02-13 주식회사 엘지화학 Method for the preparation of photochromic film or plate
KR20130013225A (en) 2011-07-27 2013-02-06 현대자동차주식회사 Glass of automobile using color changeable film

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100802891B1 (en) 2005-09-06 2008-02-13 주식회사 엘지화학 Method for the preparation of photochromic film or plate
KR20130013225A (en) 2011-07-27 2013-02-06 현대자동차주식회사 Glass of automobile using color changeable film

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