WO2024077717A1 - Light conversion film with simplified barrier film and preparation method therefor - Google Patents

Light conversion film with simplified barrier film and preparation method therefor Download PDF

Info

Publication number
WO2024077717A1
WO2024077717A1 PCT/CN2022/133359 CN2022133359W WO2024077717A1 WO 2024077717 A1 WO2024077717 A1 WO 2024077717A1 CN 2022133359 W CN2022133359 W CN 2022133359W WO 2024077717 A1 WO2024077717 A1 WO 2024077717A1
Authority
WO
WIPO (PCT)
Prior art keywords
barrier
film
barrier film
light conversion
preparation
Prior art date
Application number
PCT/CN2022/133359
Other languages
French (fr)
Chinese (zh)
Inventor
许铭富
许书元
Original Assignee
广域兴智能(南通)科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广域兴智能(南通)科技有限公司 filed Critical 广域兴智能(南通)科技有限公司
Publication of WO2024077717A1 publication Critical patent/WO2024077717A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • 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
    • 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
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV
    • 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
    • B32B2307/70—Other properties
    • B32B2307/712—Weather resistant
    • 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
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier

Definitions

  • the present invention belongs to the technical field of light conversion films, and in particular relates to a light conversion film with a simplified barrier film and a preparation method thereof.
  • Light conversion film is a functional optical film.
  • light conversion film is generally made of PET/PEN/PA substrate into a barrier film, on which a barrier material is plated, and then a photosensitive material is coated.
  • the barrier film made of the substrate on the market is relatively thin, and the performance of a single substrate is poor when used for optical films.
  • the prepared optical film can reach 1.5g/ m2 -day, and the oxygen permeability (OTR) can reach 0.3[cc/( m2 ⁇ d ⁇ atm)].
  • WVTR water vapor permeability
  • OTR oxygen permeability
  • the prepared optical film is then used in the manufacture of display products. At least 5 optical films are usually stacked in the manufacturing process. However, this method is complicated to prepare, and the barrier performance and optical performance of the prepared optical film are poor.
  • the object of the present invention is to provide a light conversion film of a simplified barrier film and a preparation method thereof, so that the light conversion film can be easily prepared and has good optical properties and barrier properties.
  • a light conversion film of a simplified barrier film comprises a barrier film and a barrier layer plated on the upper surface of the barrier film, a thin film stack is attached to the lower surface of the barrier film,
  • the barrier film includes barrier copolymer material, photoluminescent material, TiO 2 , antioxidant, white oil, and other additives.
  • the barrier layer includes Al 2 O 3 and SiO x ,
  • the thin film stack is a high and low refractive index material.
  • the barrier copolymer material includes CBC and EVOH
  • the antioxidant is a hindered phenol antioxidant
  • other additives include SiO 2 .
  • EVOH is ethylene-vinyl alcohol copolymer
  • CBC is cyclic block copolymer
  • existing barrier materials include PVDC, NY, and aluminum foil.
  • EVOH has good light transmittance and extremely low oxygen transmittance, making it more suitable for use in quantum dot materials and display optical materials; the barrier and weather resistance of CBC are similar to those of PET, PEN, and PA, but CBC has high light transmittance, UV resistance, high UV transmittance, low water absorption, and high fluidity, and its density is lower than that of existing optical materials.
  • the photoluminescent material includes at least one of cadmium selenide quantum dots and phosphors.
  • the cadmium selenide quantum dots are cadmium selenide quantum dot powder.
  • the photoluminescent material can be easily coated by CBC and EVOH, and the optical properties of CBC and EVOH can be easily improved;
  • the barrier film includes TiO2, which can effectively regulate the transmittance and haze of the barrier film, and can improve the luminous efficiency of the photoluminescent material by regulating the concentration of TiO2 , thereby improving the optical properties of the light conversion film prepared by the present invention.
  • the film stack is composed of a stack of high- and low-refractive index materials, wherein the high- and low-refractive index materials include a high-refractive index material and a low-refractive index material, the high-refractive index material is TiO 2 , and the low-refractive index material is SiO 2 .
  • Another object of the present invention is to provide a method for preparing the light conversion film of the simplified barrier film, comprising the following preparation steps:
  • the CBC and the EVOH are mixed and ground to obtain a barrier copolymer material, the photoluminescent material and the barrier copolymer material are uniformly mixed to obtain a mixture A, the mixture A, TiO 2 , a hindered phenol antioxidant, white oil, and other additives are sequentially stirred, mixed, melted, drawn, cooled, and cut to obtain a composite copolymer, and the composite copolymer is cast and rolled to obtain a barrier film;
  • CBC and EVOH work together to form the first protective layer inside the barrier film, namely the oxygen isolation layer.
  • TiO2 can improve the light efficiency of the barrier film after cast roller pressing.
  • the synergistic effect of TiO2 and other additives can also improve the light efficiency of the barrier film after cast roller pressing.
  • the barrier layer is plated on the upper surface of the barrier film obtained in step (1) by a surface coating method, and the thin film stack is attached to the lower surface of the barrier film to obtain a light conversion film.
  • the barrier layer forms a second protective layer on the surface of the barrier film, namely, a water vapor barrier layer, and the thin film stack forms a stray light filter layer on the surface of the barrier film.
  • the stray light filter layer can filter out the stray light generated by the photoluminescent material, and the stray light is light in a non-required wavelength band.
  • the preparation is convenient, the integration speed of the optical film of the display backlight module can be accelerated, the superposition or bonding of multiple layers of optical substrates can be reduced, and the reduction of light transmittance and the increase of cost can be avoided.
  • the CBC and the EVOH are mixed and ground to 0.5 mm, the mass ratio of the CBC and the EVOH is 1:0.5, the mass ratio of the photoluminescent material and the barrier copolymer material is 1:0.056 to 1:0.12, the mass ratio of the mixture A to the TiO2 is 1:0.1 to 1:0.5, the hindered phenol antioxidant accounts for 1.5% of the mass of the composite copolymer, and the white oil accounts for 0.2% of the mass of the composite copolymer.
  • the mixture A, TiO2 , hindered phenol antioxidant, white oil and other additives are sequentially placed in a stirrer and stirred at 800-1000 r/min for 20-25 min.
  • the mixture is placed in a granulator at 190-220°C, and the mixture is melted, drawn, cooled and cut in the granulator to obtain a composite copolymer.
  • the composite copolymer is cast and rolled in a casting machine to obtain a thin film barrier film, and the thickness of the barrier film is 30-60 ⁇ m.
  • the thickness of the barrier layer is 0.1 ⁇ m.
  • the barrier film of the present invention includes EVOH and CBC.
  • EVOH has better light transmittance and extremely low oxygen transmittance, and is more suitable for application in quantum dot materials and display optical materials.
  • the barrier and weather resistance of CBC are similar to those of PET, PEN, and PA, but CBC has high light transmittance, UV resistance, high UV transmittance, low water absorption, high fluidity, and lower density than the existing optical materials.
  • CBC and EVOH cooperate to form the first protective layer, i.e., the oxygen isolation layer, inside the barrier film.
  • the barrier film of the present invention includes a photoluminescent material and TiO2 .
  • the photoluminescent material is easily coated by CBC and EVOH, and the optical properties of CBC and EVOH are easily improved.
  • TiO2 can effectively regulate the light transmittance and haze of the barrier film, and the luminous efficiency of the photoluminescent material can be improved by regulating the concentration of TiO2 .
  • the synergistic effect of TiO2 and other additives can also improve the light efficiency of the barrier film after casting roller pressing.
  • the present invention includes a barrier layer and a film stack, wherein the barrier layer forms a second protective layer, i.e., a water vapor barrier layer, on the surface of the barrier film, and the film stack forms a stray light filter layer on the surface of the barrier film, and the stray light filter layer can filter out stray light generated by the photoluminescent material;
  • a second protective layer i.e., a water vapor barrier layer
  • the barrier film of the present invention is simple to prepare, which makes the present invention easy to prepare, can speed up the integration of the optical film of the display backlight module in the later stage, reduce the superposition or lamination of multiple layers of optical substrates, and avoid the reduction of light transmittance;
  • FIG1 is a schematic diagram of the overall structure of a light conversion film of Comparative Example 1 of the present invention.
  • FIG2 is a schematic diagram of the overall structure of the light conversion film of Comparative Example 2 of the present invention.
  • FIG3 is a schematic diagram of the overall structure of the light conversion film of Comparative Example 3 of the present invention.
  • FIG4 is a schematic diagram of the overall structure of the light conversion film prepared by the present invention.
  • FIG5 is a schematic diagram of the spectrum of the light conversion film prepared by the present invention.
  • the markings in the figure are: 1. Barrier layer one; 2. Barrier film one; 3. Barrier film two; 4. Barrier film three; 5. Barrier layer two; 6. Barrier film four; 7. Thin film stack; 8. Incident light spectrum; 9. Photoluminescent material spectrum; 10. Thin film stack spectrum.
  • a light conversion film with a simplified barrier film has a composition as shown in Table 1 below:
  • the barrier layer of this embodiment is a barrier layer 2 5
  • the barrier film is a barrier film 4 6
  • the film stack is a film stack 7 ;
  • a method for preparing the above-mentioned simplified barrier film light conversion film comprises the following preparation steps:
  • CBC and EVOH were mixed and ground to 0.5 mm to obtain a barrier copolymer material.
  • the photoluminescent material and the barrier copolymer material were mixed to obtain a mixture A.
  • the mixture A and TiO 2 , hindered phenol antioxidant, white oil, and other additives are sequentially put into a blender for stirring and mixing at 800 r/min for 25 min, and after mixing, are put into a granulator at 220°C, and are melted, pulled, cooled, and cut by the granulator to obtain a composite copolymer, and the composite copolymer is cast and rolled by a casting machine to obtain a thin film barrier film, and the film thickness of the barrier film is 32 ⁇ m;
  • the hindered phenol antioxidant comprises an antioxidant compound and N,N'-1,6-hexylene-bis-[3,5-di-tert-butyl-4-hydroxyphenylpropionamide], the antioxidant compound is pentaerythritol te
  • the thin film stack forms a stray light filter layer on the surface of the barrier film, and the stray light filter layer can filter out stray light generated by the photoluminescent material.
  • a light conversion film with a simplified barrier film has a composition as shown in Table 2 below:
  • the barrier layer of this embodiment is a barrier layer 2 5
  • the barrier film is a barrier film 4 6
  • the film stack is a film stack 7 ;
  • a method for preparing the above-mentioned simplified barrier film light conversion film comprises the following preparation steps:
  • CBC and EVOH were mixed and ground to 0.5 mm to obtain a barrier copolymer material.
  • the photoluminescent material and the barrier copolymer material were mixed to obtain a mixture A.
  • the mixture A and TiO 2 , hindered phenol antioxidant, and white oil are sequentially put into a blender for stirring at 1000 r/min for 20 min, and after mixing, are put into a granulator at 190°C, and are melted, pulled, cooled, and cut by the granulator to obtain a composite copolymer, and the composite copolymer is cast and rolled by a casting machine to obtain a thin film barrier film, and the film thickness of the barrier film is 56 ⁇ m;
  • the hindered phenol antioxidant comprises an antioxidant compound and N,N'-1,6-hexylene-bis-[3,5-di-tert-butyl-4-hydroxyphenylpropionamide], the antioxidant compound is pentaerythritol tetrakis[
  • the thin film stack forms a stray light filter layer on the surface of the barrier film, and the stray light filter layer can filter out the stray light generated by the photoluminescent material.
  • a light conversion film with a simplified barrier film has a composition as shown in Table 3 below:
  • the barrier layer of this embodiment is a barrier layer 2 5
  • the barrier film is a barrier film 4 6
  • the film stack is a film stack 7 ;
  • a method for preparing the above-mentioned simplified barrier film light conversion film comprises the following preparation steps:
  • CBC and EVOH were mixed and ground to 0.5 mm to obtain a barrier copolymer material.
  • the photoluminescent material and the barrier copolymer material were mixed to obtain a mixture A.
  • the mixture A and TiO 2 , hindered phenol antioxidant, and white oil are sequentially put into a blender for stirring and mixing at 910 r/min for 22 min, and then put into a granulator at 200°C for melting, drawing, cooling, and cutting to obtain a composite copolymer, and the composite copolymer is cast and rolled by a casting machine to obtain a thin film barrier film with a thickness of 50 ⁇ m;
  • the hindered phenol antioxidant comprises an antioxidant compound and N,N'-1,6-hexylene-bis-[3,5-di-tert-butyl-4-hydroxyphenylpropionamide], the antioxidant compound is pentaerythritol tetrakis[ ⁇ -(3,5-di-tert-butyl-4-hydroxy
  • the thin film stack forms a stray light filter layer on the surface of the barrier film, and the stray light filter layer can filter out the stray light generated by the photoluminescent material.
  • Comparative Examples 1 to 3 As shown in Figures 1-4, Examples 1 to 3 and existing light conversion films on the market were used as Comparative Examples 1 to 3 to prepare samples for testing, and the barrier coefficient was used to characterize the barrier performance.
  • the structures of Comparative Examples 1 to 3 are shown in Tables 4 to 5 below, and the test results are shown in Table 6 below:
  • the light conversion films of Comparative Examples 1 to 3 include a barrier film and a barrier layer plated on the upper surface of the barrier film;
  • Examples 1 to 3 and existing light conversion films on the market were used as comparative examples 4 to 6 to prepare samples, and the optical properties were characterized by light transmittance; the sample thickness was 300 ⁇ m ⁇ 20 ⁇ m, and the light transmittance was tested according to ASTM: D1003 standard.
  • the models of the light conversion films of comparative examples 4 to 6 are shown in Table 7 below, and the test results are shown in Table 8 below:
  • the spectrum of the incident light of the present invention is incident light spectrum 8
  • the incident light is white light
  • the blue light portion of the white light passes through the thin film stack and excites the photoluminescent material in the barrier film to generate energy in two or more longer wavebands
  • the spectrum of the photoluminescent material and the spectrum of the thin film stack are photoluminescent material spectrum 9 and thin film stack spectrum 10 in FIG.
  • the water vapor barrier coefficient of the light conversion film prepared by the present invention can reach 1/114 of the water vapor barrier coefficient of the existing light conversion film on the market
  • the oxygen barrier coefficient of the light conversion film prepared by the present invention can reach 1/14 of the oxygen barrier coefficient of the existing light conversion film on the market
  • the light transmittance of the light conversion film of the present invention can be increased by 8% compared with the light transmittance of the existing light conversion film on the market; this shows that the light conversion film prepared by the present invention is easy to prepare and has good optical and barrier properties.

Abstract

The present invention belongs to the technical field of light conversion films, and particularly relates to a light conversion film with a simplified barrier film and a preparation method therefor. The light conversion film comprises a barrier film and a barrier layer plated on the surface of the upper layer of the barrier film, wherein a thin film stack is attached to the surface of the lower layer of the barrier film; the barrier film comprises a barrier copolymer material, a photoluminescent material, TiO2, an antioxidant, white oil and other additives; the barrier layer comprises Al2O3 and SiOx; and the thin film stack is high- and low-refractive-index materials. The preparation method comprises the steps of: (1) the preparation of a barrier film, involving: stirring and mixing a barrier copolymer material, a photoluminescent material, TiO2, a hindered phenol antioxidant, white oil and other additives, subjecting the resulting mixture to melting, pulling, cooling, cutting-off, and tape casting and rolling, so as to obtain a barrier film; and (2) the preparation of a light conversion film, involving: plating a barrier layer onto the surface of the upper layer of the barrier film, and attaching a thin film stack to the surface of the lower layer of the barrier film, so as to obtain a light conversion film. By means of the present invention, the light conversion film is convenient to prepare, and has relatively good optical performance and barrier performance.

Description

一种简化阻隔膜的光转换膜及其制备方式A light conversion film for simplifying barrier film and preparation method thereof 技术领域Technical Field
本发明属于光转换膜技术领域，具体涉及一种简化阻隔膜的光转换膜及其制备方式。The present invention belongs to the technical field of light conversion films, and in particular relates to a light conversion film with a simplified barrier film and a preparation method thereof.
背景技术Background technique
光转换膜属于功能型光学膜，目前，光转换膜一般是将PET/PEN/PA基材制成阻隔膜，在阻隔膜上镀上阻隔材料，再涂布感光材料，市面上基材制成的阻隔膜厚度较薄，单一基材用于光学膜片时性能较差。Light conversion film is a functional optical film. At present, light conversion film is generally made of PET/PEN/PA substrate into a barrier film, on which a barrier material is plated, and then a photosensitive material is coated. The barrier film made of the substrate on the market is relatively thin, and the performance of a single substrate is poor when used for optical films.
因此有厂家将PET、PEN、PA三种基材选择性贴合制成阻隔膜来提高光学膜的挺度，同时维持光学膜的阻隔率，制得的光学膜的水气透过率(Water Permeability，WVTR)能达到1.5g/m 2-day，氧气透过率(Oxygen Permeability，OTR)能达到0.3[cc/(m 2·d·atm)]，再将制备的光学膜用于显示器产品的制造，制造中通常会使用至少5张的光学膜进行堆栈，但是该方法制备复杂，制备的光学膜阻隔性能和光学性能较差。 Therefore, some manufacturers selectively bond PET, PEN, and PA substrates to form barrier films to improve the stiffness of the optical film while maintaining the barrier rate of the optical film. The water vapor permeability (WVTR) of the prepared optical film can reach 1.5g/ m2 -day, and the oxygen permeability (OTR) can reach 0.3[cc/( m2 ·d·atm)]. The prepared optical film is then used in the manufacture of display products. At least 5 optical films are usually stacked in the manufacturing process. However, this method is complicated to prepare, and the barrier performance and optical performance of the prepared optical film are poor.
发明内容Summary of the invention
本发明的目的是提供一种简化阻隔膜的光转换膜及其制备方式，以达到该光转换膜制备便捷，同时光学性能和阻隔性能较好。The object of the present invention is to provide a light conversion film of a simplified barrier film and a preparation method thereof, so that the light conversion film can be easily prepared and has good optical properties and barrier properties.
一种简化阻隔膜的光转换膜，包括阻隔膜和镀在阻隔膜上层表面的阻隔层，所述阻隔膜下层表面贴附有薄膜堆，A light conversion film of a simplified barrier film comprises a barrier film and a barrier layer plated on the upper surface of the barrier film, a thin film stack is attached to the lower surface of the barrier film,
所述阻隔膜包括阻隔共聚物材料、光致发光材料、TiO 2、抗氧剂、白油、其他添加剂， The barrier film includes barrier copolymer material, photoluminescent material, TiO 2 , antioxidant, white oil, and other additives.
所述阻隔层包括Al 2O 3和SiO x， The barrier layer includes Al 2 O 3 and SiO x ,
所述薄膜堆为高低折射率材料。The thin film stack is a high and low refractive index material.
优选的，所述阻隔共聚物材料包括CBC和EVOH，所述抗氧剂为受阻酚类抗氧剂，其他添加剂包括SiO 2。 Preferably, the barrier copolymer material includes CBC and EVOH, the antioxidant is a hindered phenol antioxidant, and other additives include SiO 2 .
采用上述技术方案，EVOH为乙烯-乙烯醇共聚物，CBC为环状嵌段共聚物，现有的阻隔材料包括PVDC、NY、铝箔，EVOH相比较现有的阻隔材料透光性好，EVOH具有极低氧透过率，更适合应用于量子点材料及显示器光学材料； CBC的阻隔性和耐候性与PET、PEN、PA的相似，但CBC具有高透光性、耐紫外光、高透紫外光、低吸水性、高流动性，同时密度低于现有光学材料。Using the above technical solution, EVOH is ethylene-vinyl alcohol copolymer, CBC is cyclic block copolymer, and existing barrier materials include PVDC, NY, and aluminum foil. Compared with existing barrier materials, EVOH has good light transmittance and extremely low oxygen transmittance, making it more suitable for use in quantum dot materials and display optical materials; the barrier and weather resistance of CBC are similar to those of PET, PEN, and PA, but CBC has high light transmittance, UV resistance, high UV transmittance, low water absorption, and high fluidity, and its density is lower than that of existing optical materials.
优选的，所述光致发光材料包括硒化镉量子点和荧光粉中的至少一种。Preferably, the photoluminescent material includes at least one of cadmium selenide quantum dots and phosphors.
优选的，所述硒化镉量子点为硒化镉量子点粉。Preferably, the cadmium selenide quantum dots are cadmium selenide quantum dot powder.
采用上述技术方案，光致发光材料易被CBC和EVOH包覆，易于提高CBC和EVOH的光学性能；阻隔膜包括TiO 2能够有效调控阻隔膜的透光率和雾度，且能够通过调控TiO 2的浓度提高光致发光材料的发光效率，进而提高了本发明制备的光转换膜的光学性能。 By adopting the above technical scheme, the photoluminescent material can be easily coated by CBC and EVOH, and the optical properties of CBC and EVOH can be easily improved; the barrier film includes TiO2, which can effectively regulate the transmittance and haze of the barrier film, and can improve the luminous efficiency of the photoluminescent material by regulating the concentration of TiO2 , thereby improving the optical properties of the light conversion film prepared by the present invention.
优选的，所述薄膜堆由所述高低折射率材料堆栈组成，所述高低折射率材料包括高折射率材料和低折射率材料，高折射率材料为TiO 2，低折射率材料为SiO 2。 Preferably, the film stack is composed of a stack of high- and low-refractive index materials, wherein the high- and low-refractive index materials include a high-refractive index material and a low-refractive index material, the high-refractive index material is TiO 2 , and the low-refractive index material is SiO 2 .
采用上述技术方案，TiO 2的折射率n＝2.35，SiO 2的折射率n＝1.46。 Using the above technical solution, the refractive index of TiO2 is n=2.35, and the refractive index of SiO2 is n=1.46.
本发明的另一目的是提供一种所述的简化阻隔膜的光转换膜的制备方式，包括如下制备步骤：Another object of the present invention is to provide a method for preparing the light conversion film of the simplified barrier film, comprising the following preparation steps:
(1)所述阻隔膜的制备：(1) Preparation of the barrier film:
将所述CBC和所述EVOH混合研磨得到阻隔共聚物材料，将所述光致发光材料和所述阻隔共聚物材料混合均匀得到混合物A，将所述混合物A、TiO 2、受阻酚类抗氧剂、白油、其他添加剂依次进行搅拌混合、熔融、拉料、冷却、切断，得到复合共聚物，将复合共聚物流延辊压，得到阻隔膜； The CBC and the EVOH are mixed and ground to obtain a barrier copolymer material, the photoluminescent material and the barrier copolymer material are uniformly mixed to obtain a mixture A, the mixture A, TiO 2 , a hindered phenol antioxidant, white oil, and other additives are sequentially stirred, mixed, melted, drawn, cooled, and cut to obtain a composite copolymer, and the composite copolymer is cast and rolled to obtain a barrier film;
采用上述技术方案，CBC和EVOH协同使得阻隔膜内部形成第一层保护层，即氧气隔离层，TiO 2能够提高流延辊压后阻隔膜的光效率，TiO 2和其他添加剂协同作用也能够提高流延辊压后阻隔膜的光效率。 By adopting the above technical scheme, CBC and EVOH work together to form the first protective layer inside the barrier film, namely the oxygen isolation layer. TiO2 can improve the light efficiency of the barrier film after cast roller pressing. The synergistic effect of TiO2 and other additives can also improve the light efficiency of the barrier film after cast roller pressing.
(2)所述光转换膜的制备：(2) Preparation of the light conversion film:
通过表面镀膜法在步骤(1)制得的阻隔膜上层表面镀上所述阻隔层，在所述阻隔膜下层表面贴附所述薄膜堆，得到光转换膜。The barrier layer is plated on the upper surface of the barrier film obtained in step (1) by a surface coating method, and the thin film stack is attached to the lower surface of the barrier film to obtain a light conversion film.
采用上述技术方案，阻隔层使得阻隔膜表面形成第二层保护层，即水气阻隔层，薄膜堆使得阻隔膜表面形成杂散光过滤层，杂散光过滤层能够过滤掉光致发光材料产生的杂散光，杂散光为非所需波段的光；另外，采用上述制备方式，使得制备便捷，能加快显示器背光模块的光学膜的整合速度，减少多层光学基材的叠加或贴合，避免透光率降低及成本增加。By adopting the above technical solution, the barrier layer forms a second protective layer on the surface of the barrier film, namely, a water vapor barrier layer, and the thin film stack forms a stray light filter layer on the surface of the barrier film. The stray light filter layer can filter out the stray light generated by the photoluminescent material, and the stray light is light in a non-required wavelength band. In addition, by adopting the above preparation method, the preparation is convenient, the integration speed of the optical film of the display backlight module can be accelerated, the superposition or bonding of multiple layers of optical substrates can be reduced, and the reduction of light transmittance and the increase of cost can be avoided.
优选的，在步骤(1)所述阻隔膜的制备中，将所述CBC和所述EVOH混合研磨至0.5mm，所述CBC和所述EVOH的质量比为1:0.5，所述光致发光材料和所述阻隔共聚物材料的质量比为1：0.056～1:0.12，所述混合物A和所述TiO 2的质量比为1:0.1～1:0.5，所述受阻酚类抗氧剂占复合共聚物质量的1.5％，所述白油占复合共聚物质量的0.2％。 Preferably, in the preparation of the barrier film in step (1), the CBC and the EVOH are mixed and ground to 0.5 mm, the mass ratio of the CBC and the EVOH is 1:0.5, the mass ratio of the photoluminescent material and the barrier copolymer material is 1:0.056 to 1:0.12, the mass ratio of the mixture A to the TiO2 is 1:0.1 to 1:0.5, the hindered phenol antioxidant accounts for 1.5% of the mass of the composite copolymer, and the white oil accounts for 0.2% of the mass of the composite copolymer.
优选的，在步骤(1)所述阻隔膜的制备中，将所述混合物A、TiO 2、受阻酚类抗氧剂、白油、其他添加剂依次放入搅拌机进行800～1000r/min搅拌混合20～25min，混合结束后放入190～220℃造粒机，通过造粒机进行熔融、拉料、冷却、切断，得到复合共聚物，将复合共聚物通过流延机进行流延辊压，得到薄膜状的阻隔膜，所述阻隔膜的薄膜厚度为30～60μm。 Preferably, in the preparation of the barrier film in step (1), the mixture A, TiO2 , hindered phenol antioxidant, white oil and other additives are sequentially placed in a stirrer and stirred at 800-1000 r/min for 20-25 min. After the mixing, the mixture is placed in a granulator at 190-220°C, and the mixture is melted, drawn, cooled and cut in the granulator to obtain a composite copolymer. The composite copolymer is cast and rolled in a casting machine to obtain a thin film barrier film, and the thickness of the barrier film is 30-60 μm.
优选的，在步骤(2)所述光转换膜的制备中，所述阻隔层的厚度为0.1μm。Preferably, in the preparation of the light conversion film in step (2), the thickness of the barrier layer is 0.1 μm.
本发明的有益效果是：The beneficial effects of the present invention are:
第一，本发明的阻隔膜包括EVOH和CBC，EVOH相比较现有的阻隔材料透光性好，EVOH具有极低氧透过率，更适合应用于量子点材料及显示器光学材料；CBC的阻隔性和耐候性与PET、PEN、PA的相似，但CBC具有高透光性、耐紫外光、高透紫外光、低吸水性、高流动性，同时密度低于现有光学材料；而且CBC和EVOH协同使得阻隔膜内部形成第一层保护层，即氧气隔离层；First, the barrier film of the present invention includes EVOH and CBC. Compared with the existing barrier materials, EVOH has better light transmittance and extremely low oxygen transmittance, and is more suitable for application in quantum dot materials and display optical materials. The barrier and weather resistance of CBC are similar to those of PET, PEN, and PA, but CBC has high light transmittance, UV resistance, high UV transmittance, low water absorption, high fluidity, and lower density than the existing optical materials. Moreover, CBC and EVOH cooperate to form the first protective layer, i.e., the oxygen isolation layer, inside the barrier film.
第二，本发明的阻隔膜包括光致发光材料和TiO 2，光致发光材料易被CBC和EVOH包覆，易于提高CBC和EVOH的光学性能；TiO 2能够有效调控阻隔膜的透光率和雾度，且能够通过调控TiO 2的浓度提高光致发光材料的发光效率，TiO 2和其他添加剂协同作用也能够提高流延辊压后阻隔膜的光效率； Second, the barrier film of the present invention includes a photoluminescent material and TiO2 . The photoluminescent material is easily coated by CBC and EVOH, and the optical properties of CBC and EVOH are easily improved. TiO2 can effectively regulate the light transmittance and haze of the barrier film, and the luminous efficiency of the photoluminescent material can be improved by regulating the concentration of TiO2 . The synergistic effect of TiO2 and other additives can also improve the light efficiency of the barrier film after casting roller pressing.
第三，本发明包括阻隔层和薄膜堆，阻隔层使得阻隔膜表面形成第二层保护层，即水气阻隔层，薄膜堆使得阻隔膜表面形成杂散光过滤层，杂散光过滤层能够过滤掉光致发光材料产生的杂散光；Third, the present invention includes a barrier layer and a film stack, wherein the barrier layer forms a second protective layer, i.e., a water vapor barrier layer, on the surface of the barrier film, and the film stack forms a stray light filter layer on the surface of the barrier film, and the stray light filter layer can filter out stray light generated by the photoluminescent material;
第四，本发明的阻隔膜制备方式简便，使得本发明制备便捷，能加快后期显示器背光模块的光学膜的整合速度，减少多层光学基材的叠加或贴合，避免透光率降低；Fourthly, the barrier film of the present invention is simple to prepare, which makes the present invention easy to prepare, can speed up the integration of the optical film of the display backlight module in the later stage, reduce the superposition or lamination of multiple layers of optical substrates, and avoid the reduction of light transmittance;
综上四点共同作用使得本发明的光转换膜制备便捷，同时光学性能和阻隔性能较好。The above four points work together to facilitate the preparation of the light conversion film of the present invention, while having good optical and barrier properties.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例一起用于解释本发明，并不构成对本发明的限制。The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.
在附图中：In the attached picture:
图1是本发明的对比例1的光转换膜整体结构示意图；FIG1 is a schematic diagram of the overall structure of a light conversion film of Comparative Example 1 of the present invention;
图2是本发明的对比例2的光转换膜整体结构示意图；FIG2 is a schematic diagram of the overall structure of the light conversion film of Comparative Example 2 of the present invention;
图3是本发明的对比例3的光转换膜整体结构示意图；FIG3 is a schematic diagram of the overall structure of the light conversion film of Comparative Example 3 of the present invention;
图4是本发明制备获得的光转换膜整体结构示意图；FIG4 is a schematic diagram of the overall structure of the light conversion film prepared by the present invention;
图5是本发明制备获得的光转换膜光谱示意图；FIG5 is a schematic diagram of the spectrum of the light conversion film prepared by the present invention;
图中标记为：1.阻隔层一；2.阻隔膜一；3.阻隔膜二；4.阻隔膜三；5.阻隔层二；6.阻隔膜四；7.薄膜堆；8.入射光光谱；9.光致发光材料光谱；10.薄膜堆光谱。The markings in the figure are: 1. Barrier layer one; 2. Barrier film one; 3. Barrier film two; 4. Barrier film three; 5. Barrier layer two; 6. Barrier film four; 7. Thin film stack; 8. Incident light spectrum; 9. Photoluminescent material spectrum; 10. Thin film stack spectrum.
具体实施方式Detailed ways
实施例1Example 1
参照图5，一种简化阻隔膜的光转换膜，组成如下述表1所示：Referring to FIG. 5 , a light conversion film with a simplified barrier film has a composition as shown in Table 1 below:
表1Table 1
Figure PCTCN2022133359-appb-000001
Figure PCTCN2022133359-appb-000001
如图4所示，本实施例的阻隔层为阻隔层二5，阻隔膜为阻隔膜四6，薄膜堆为薄膜堆7；As shown in FIG. 4 , the barrier layer of this embodiment is a barrier layer 2 5 , the barrier film is a barrier film 4 6 , and the film stack is a film stack 7 ;
一种上述的简化阻隔膜的光转换膜的制备方式，包括如下制备步骤：A method for preparing the above-mentioned simplified barrier film light conversion film comprises the following preparation steps:
(1)阻隔膜的制备：(1) Preparation of barrier film:
参照上述表1，将CBC和EVOH混合研磨至0.5mm，得到阻隔共聚物材料，将光致发光材料和阻隔共聚物材料混合均匀得到混合物A，将混合物A、TiO 2、受阻酚类抗氧剂、白油、其他添加剂依次放入搅拌机进行800r/min搅拌混合25min，混合结束后放入220℃造粒机，通过造粒机进行熔融、拉料、冷却、切断，得到复合共聚物，将复合共聚物通过流延机进行流延辊压，得到薄膜状的阻隔膜，阻隔膜的薄膜厚度为32μm；其中，受阻酚类抗氧剂包括抗氧剂复配物和N,N’-1,6-亚己基-二-[3,5-二叔丁基-4-羟基苯丙酰胺]，抗氧剂复配物为四[β-(3，5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯和亚磷酸三(2，4-二叔丁基苯基)酯，CBC型号为台聚公司(CBC系列/1325牌号，中国台湾)，EVOH型号为Kuraray公司(EVAL系列/L171B牌号，日本)。 Referring to Table 1, CBC and EVOH were mixed and ground to 0.5 mm to obtain a barrier copolymer material. The photoluminescent material and the barrier copolymer material were mixed to obtain a mixture A. The mixture A and TiO 2 , hindered phenol antioxidant, white oil, and other additives are sequentially put into a blender for stirring and mixing at 800 r/min for 25 min, and after mixing, are put into a granulator at 220°C, and are melted, pulled, cooled, and cut by the granulator to obtain a composite copolymer, and the composite copolymer is cast and rolled by a casting machine to obtain a thin film barrier film, and the film thickness of the barrier film is 32 μm; wherein, the hindered phenol antioxidant comprises an antioxidant compound and N,N'-1,6-hexylene-bis-[3,5-di-tert-butyl-4-hydroxyphenylpropionamide], the antioxidant compound is pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and tris(2,4-di-tert-butylphenyl) phosphite, the CBC model is Taiju Corporation (CBC series/1325 brand, Taiwan, China), and the EVOH model is Kuraray Corporation (EVAL series/L171B brand, Japan).
(2)光转换膜的制备：(2) Preparation of light conversion film:
参照上述表1，通过表面镀膜法在步骤(1)制得的阻隔膜上层表面镀上阻隔层，在阻隔膜下层表面贴附薄膜堆，得到光转换膜，其中薄膜堆中的TiO 2为高折射率材料，折射率n＝2.35，SiO 2为低折射率材料，折射率n＝1.46，薄膜堆使得阻隔膜表面形成杂散光过滤层，杂散光过滤层能够过滤掉光致发光材料产生的杂散光。 Referring to Table 1 above, a barrier layer is plated on the upper surface of the barrier film obtained in step (1) by a surface coating method, and a thin film stack is attached to the lower surface of the barrier film to obtain a light conversion film, wherein TiO2 in the thin film stack is a high refractive index material with a refractive index n=2.35, and SiO2 is a low refractive index material with a refractive index n=1.46. The thin film stack forms a stray light filter layer on the surface of the barrier film, and the stray light filter layer can filter out stray light generated by the photoluminescent material.
实施例2Example 2
参照图5，一种简化阻隔膜的光转换膜，组成如下述表2所示：Referring to FIG. 5 , a light conversion film with a simplified barrier film has a composition as shown in Table 2 below:
表2Table 2
Figure PCTCN2022133359-appb-000002
Figure PCTCN2022133359-appb-000002
Figure PCTCN2022133359-appb-000003
Figure PCTCN2022133359-appb-000003
如图4所示，本实施例的阻隔层为阻隔层二5，阻隔膜为阻隔膜四6，薄膜堆为薄膜堆7；As shown in FIG. 4 , the barrier layer of this embodiment is a barrier layer 2 5 , the barrier film is a barrier film 4 6 , and the film stack is a film stack 7 ;
一种上述的简化阻隔膜的光转换膜的制备方式，包括如下制备步骤：A method for preparing the above-mentioned simplified barrier film light conversion film comprises the following preparation steps:
(1)阻隔膜的制备：(1) Preparation of barrier film:
参照上述表2，将CBC和EVOH混合研磨至0.5mm，得到阻隔共聚物材料，将光致发光材料和阻隔共聚物材料混合均匀得到混合物A，将混合物A、TiO 2、受阻酚类抗氧剂、白油依次放入搅拌机进行1000r/min搅拌混合20min，混合结束后放入190℃造粒机，通过造粒机进行熔融、拉料、冷却、切断，得到复合共聚物，将复合共聚物通过流延机进行流延辊压，得到薄膜状的阻隔膜，阻隔膜的薄膜厚度为56μm；其中，受阻酚类抗氧剂包括抗氧剂复配物和N,N’-1,6-亚己基-二-[3,5-二叔丁基-4-羟基苯丙酰胺]，抗氧剂复配物为四[β-(3，5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯和亚磷酸三(2，4-二叔丁基苯基)酯，CBC型号为台聚公司(CBC系列/1325牌号，中国台湾)，EVOH型号为Kuraray公司(EVAL系列/L171B牌号，日本)。 Referring to Table 2 above, CBC and EVOH were mixed and ground to 0.5 mm to obtain a barrier copolymer material. The photoluminescent material and the barrier copolymer material were mixed to obtain a mixture A. The mixture A and TiO 2 , hindered phenol antioxidant, and white oil are sequentially put into a blender for stirring at 1000 r/min for 20 min, and after mixing, are put into a granulator at 190°C, and are melted, pulled, cooled, and cut by the granulator to obtain a composite copolymer, and the composite copolymer is cast and rolled by a casting machine to obtain a thin film barrier film, and the film thickness of the barrier film is 56 μm; wherein, the hindered phenol antioxidant comprises an antioxidant compound and N,N'-1,6-hexylene-bis-[3,5-di-tert-butyl-4-hydroxyphenylpropionamide], the antioxidant compound is pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and tris(2,4-di-tert-butylphenyl) phosphite, the CBC model is Taiju Corporation (CBC series/1325 brand, Taiwan, China), and the EVOH model is Kuraray Corporation (EVAL series/L171B brand, Japan).
(2)光转换膜的制备：(2) Preparation of light conversion film:
参照上述表2，通过表面镀膜法在步骤(1)制得的阻隔膜上层表面镀上阻隔层，在阻隔膜下层表面贴附薄膜堆，得到光转换膜，其中薄膜堆中的TiO 2为高折射率材料，折射率n＝2.35，SiO 2为低折射率材料，折射率n＝1.46，薄膜堆使得阻隔膜表面形成杂散光过滤层，杂散光过滤层能够过滤掉光致发光材料产生的杂散光。 Referring to Table 2 above, a barrier layer is plated on the upper surface of the barrier film obtained in step (1) by a surface coating method, and a thin film stack is attached to the lower surface of the barrier film to obtain a light conversion film, wherein TiO2 in the thin film stack is a high refractive index material with a refractive index n=2.35, and SiO2 is a low refractive index material with a refractive index n=1.46. The thin film stack forms a stray light filter layer on the surface of the barrier film, and the stray light filter layer can filter out the stray light generated by the photoluminescent material.
实施例3Example 3
参照图5，一种简化阻隔膜的光转换膜，组成如下述表3所示：Referring to FIG. 5 , a light conversion film with a simplified barrier film has a composition as shown in Table 3 below:
表3table 3
Figure PCTCN2022133359-appb-000004
Figure PCTCN2022133359-appb-000004
如图4所示，本实施例的阻隔层为阻隔层二5，阻隔膜为阻隔膜四6，薄膜堆为薄膜堆7；As shown in FIG. 4 , the barrier layer of this embodiment is a barrier layer 2 5 , the barrier film is a barrier film 4 6 , and the film stack is a film stack 7 ;
一种上述的简化阻隔膜的光转换膜的制备方式，包括如下制备步骤：A method for preparing the above-mentioned simplified barrier film light conversion film comprises the following preparation steps:
(1)阻隔膜的制备：(1) Preparation of barrier film:
参照上述表3，将CBC和EVOH混合研磨至0.5mm，得到阻隔共聚物材料，将光致发光材料和阻隔共聚物材料混合均匀得到混合物A，将混合物A、TiO 2、受阻酚类抗氧剂、白油依次放入搅拌机进行910r/min搅拌混合22min，混合结束后放入200℃造粒机，通过造粒机进行熔融、拉料、冷却、切断，得到复合共聚物，将复合共聚物通过流延机进行流延辊压，得到薄膜状的阻隔膜，阻隔膜的薄膜厚度为50μm；其中，受阻酚类抗氧剂包括抗氧剂复配物和N,N’-1,6-亚己基-二-[3,5-二叔丁基-4-羟基苯丙酰胺]，抗氧剂复配物为四[β-(3，5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯和亚磷酸三(2，4-二叔丁基苯基)酯，CBC型号为台聚公司(CBC系列/1325牌号，中国台湾)，EVOH型号为Kuraray公司(EVAL系列/L171B牌号，日本)。 Referring to Table 3, CBC and EVOH were mixed and ground to 0.5 mm to obtain a barrier copolymer material. The photoluminescent material and the barrier copolymer material were mixed to obtain a mixture A. The mixture A and TiO 2 , hindered phenol antioxidant, and white oil are sequentially put into a blender for stirring and mixing at 910 r/min for 22 min, and then put into a granulator at 200°C for melting, drawing, cooling, and cutting to obtain a composite copolymer, and the composite copolymer is cast and rolled by a casting machine to obtain a thin film barrier film with a thickness of 50 μm; wherein, the hindered phenol antioxidant comprises an antioxidant compound and N,N'-1,6-hexylene-bis-[3,5-di-tert-butyl-4-hydroxyphenylpropionamide], the antioxidant compound is pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and tris(2,4-di-tert-butylphenyl) phosphite, the CBC model is Taiju Corporation (CBC series/1325 brand, Taiwan, China), and the EVOH model is Kuraray Corporation (EVAL series/L171B brand, Japan).
(2)光转换膜的制备：(2) Preparation of light conversion film:
参照上述表3，通过表面镀膜法在步骤(1)制得的阻隔膜上层表面镀上阻隔层，在阻隔膜下层表面贴附薄膜堆，得到光转换膜，其中薄膜堆中的TiO 2为高折射率材料，折射率n＝2.35，SiO 2为低折射率材料，折射率n＝1.46，薄膜堆使得阻隔膜表面形成杂散光过滤层，杂散光过滤层能够过滤掉光致发光材料产生的杂散光。 Referring to Table 3 above, a barrier layer is plated on the upper surface of the barrier film obtained in step (1) by a surface coating method, and a thin film stack is attached to the lower surface of the barrier film to obtain a light conversion film, wherein TiO2 in the thin film stack is a high refractive index material with a refractive index n=2.35, and SiO2 is a low refractive index material with a refractive index n=1.46. The thin film stack forms a stray light filter layer on the surface of the barrier film, and the stray light filter layer can filter out the stray light generated by the photoluminescent material.
如图1-4所示，取实施例1～3、市面上现有的光转换膜作为对比例1～3制成样品进行检测，用阻隔系数表征阻隔性能，对比例1～3的结构如下述表4～5所示，检测结果如下述表6所示：As shown in Figures 1-4, Examples 1 to 3 and existing light conversion films on the market were used as Comparative Examples 1 to 3 to prepare samples for testing, and the barrier coefficient was used to characterize the barrier performance. The structures of Comparative Examples 1 to 3 are shown in Tables 4 to 5 below, and the test results are shown in Table 6 below:
表4Table 4
Figure PCTCN2022133359-appb-000005
Figure PCTCN2022133359-appb-000005
如图1-3所示，对比例1～3的光转换膜包括阻隔膜和镀在阻隔膜上层表面的阻隔层；As shown in Figures 1-3, the light conversion films of Comparative Examples 1 to 3 include a barrier film and a barrier layer plated on the upper surface of the barrier film;
表5table 5
Figure PCTCN2022133359-appb-000006
Figure PCTCN2022133359-appb-000006
表6Table 6
Figure PCTCN2022133359-appb-000007
Figure PCTCN2022133359-appb-000007
Figure PCTCN2022133359-appb-000008
Figure PCTCN2022133359-appb-000008
取实施例1～3、市面上现有的光转换膜作为对比例4～6制成样品，用透光率表征光学性能；样品厚度都为300μm±20μm，透光率按照ASTM:D1003标准测试，对比例4～6的光转换膜的型号如下述表7所示，检测结果如下述表8所示：Examples 1 to 3 and existing light conversion films on the market were used as comparative examples 4 to 6 to prepare samples, and the optical properties were characterized by light transmittance; the sample thickness was 300 μm ± 20 μm, and the light transmittance was tested according to ASTM: D1003 standard. The models of the light conversion films of comparative examples 4 to 6 are shown in Table 7 below, and the test results are shown in Table 8 below:
表7Table 7
编号serial number 型号model
对比例4Comparative Example 4 QLCFT300P(纳晶)QLCFT300P(Nanocrystalline)
对比例5Comparative Example 5 QA300(UBright)QA300(UBright)
对比例6Comparative Example 6 HQ4T4-R6PC(华威新材料)HQ4T4-R6PC (Huawei New Materials)
表8Table 8
编号serial number 透光率Transmittance
实施例1Example 1 60％60%
实施例2Example 2 57.2％57.2%
实施例3Example 3 57.8％57.8%
对比例4Comparative Example 4 52％52%
对比例5Comparative Example 5 55％55%
对比例6Comparative Example 6 57％57%
参照图5，本发明的入射光的光谱为入射光光谱8，入射光为白光，白光中的蓝光部分穿过薄膜堆，并激发阻隔膜中的光致发光材料，产生两个以上较长波段的能量，光致发光材料的光谱和薄膜堆的光谱分别为图5中的光致发光材料光谱9和薄膜堆光谱10；综合上述表6和表8的检测结果，本发明制备的光转换膜的水蒸气阻隔系数能够达到市面现有的光转换膜的水蒸气阻隔系数的1/114，本发明制备的光转换膜的氧气阻隔系数能够达到市面现有的光转换膜的氧气阻隔系数的1/14，本发明的光转换膜的透光率相比市面现有的光转换膜的透光率能够提高8％；这说明本发明制备的的光转换膜的制备便捷，光学性能和阻隔性能较好。5 , the spectrum of the incident light of the present invention is incident light spectrum 8, the incident light is white light, the blue light portion of the white light passes through the thin film stack and excites the photoluminescent material in the barrier film to generate energy in two or more longer wavebands, the spectrum of the photoluminescent material and the spectrum of the thin film stack are photoluminescent material spectrum 9 and thin film stack spectrum 10 in FIG. 5 , respectively; based on the test results of Tables 6 and 8 above, the water vapor barrier coefficient of the light conversion film prepared by the present invention can reach 1/114 of the water vapor barrier coefficient of the existing light conversion film on the market, the oxygen barrier coefficient of the light conversion film prepared by the present invention can reach 1/14 of the oxygen barrier coefficient of the existing light conversion film on the market, and the light transmittance of the light conversion film of the present invention can be increased by 8% compared with the light transmittance of the existing light conversion film on the market; this shows that the light conversion film prepared by the present invention is easy to prepare and has good optical and barrier properties.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前 述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (8)

  1. 一种简化阻隔膜的光转换膜，包括阻隔膜和镀在阻隔膜上层表面的阻隔层，其特征在于，所述阻隔膜下层表面贴附有薄膜堆，A light conversion film of a simplified barrier film comprises a barrier film and a barrier layer plated on the upper surface of the barrier film, wherein a thin film stack is attached to the lower surface of the barrier film.
    所述阻隔膜包括阻隔共聚物材料、光致发光材料、TiO 2、抗氧剂、白油、其他添加剂， The barrier film includes barrier copolymer material, photoluminescent material, TiO 2 , antioxidant, white oil, and other additives.
    所述阻隔共聚物材料包括CBC和EVOH，其他添加剂包括SiO 2， The barrier copolymer material includes CBC and EVOH, and other additives include SiO 2 ,
    所述阻隔层包括Al 2O 3和SiO x， The barrier layer includes Al 2 O 3 and SiO x ,
    所述薄膜堆由高低折射率材料堆栈组成，所述高低折射率材料包括高折射率材料和低折射率材料，高折射率材料为TiO 2，低折射率材料为SiO 2。 The film stack is composed of a stack of high- and low-refractive index materials, wherein the high- and low-refractive index materials include a high-refractive index material and a low-refractive index material, wherein the high-refractive index material is TiO 2 and the low-refractive index material is SiO 2 .
  2. 根据权利要求1所述的简化阻隔膜的光转换膜，其特征在于，所述抗氧剂为受阻酚类抗氧剂。The light conversion film of the simplified barrier film according to claim 1, characterized in that the antioxidant is a hindered phenol antioxidant.
  3. 根据权利要求1所述的简化阻隔膜的光转换膜，其特征在于，所述光致发光材料包括硒化镉量子点和荧光粉中的至少一种。The light conversion film of the simplified barrier film according to claim 1 is characterized in that the photoluminescent material includes at least one of cadmium selenide quantum dots and phosphors.
  4. 根据权利要求3所述的简化阻隔膜的光转换膜，其特征在于，所述硒化镉量子点为硒化镉量子点粉。The light conversion film of the simplified barrier film according to claim 3 is characterized in that the cadmium selenide quantum dots are cadmium selenide quantum dot powder.
  5. 一种权利要求2所述的简化阻隔膜的光转换膜的制备方式，其特征在于，包括如下制备步骤：A method for preparing the light conversion film of the simplified barrier film according to claim 2, characterized in that it comprises the following preparation steps:
    (1)所述阻隔膜的制备：(1) Preparation of the barrier film:
    将所述CBC和所述EVOH混合研磨得到阻隔共聚物材料，将所述光致发光材料和阻隔共聚物材料混合均匀得到混合物A，将混合物A、TiO 2、受阻酚类抗氧剂、白油、其他添加剂依次进行搅拌混合、熔融、拉料、冷却、切断，得到复合共聚物，将复合共聚物流延辊压，得到阻隔膜； The CBC and the EVOH are mixed and ground to obtain a barrier copolymer material, the photoluminescent material and the barrier copolymer material are uniformly mixed to obtain a mixture A, the mixture A, TiO 2 , a hindered phenol antioxidant, white oil, and other additives are stirred, mixed, melted, drawn, cooled, and cut in sequence to obtain a composite copolymer, and the composite copolymer is cast and rolled to obtain a barrier film;
    (2)所述光转换膜的制备：(2) Preparation of the light conversion film:
    在步骤(1)制得的阻隔膜上层表面镀上所述阻隔层，在所述阻隔膜下层表面贴附所述薄膜堆，得到光转换膜。The barrier layer is plated on the upper surface of the barrier film obtained in step (1), and the thin film stack is attached to the lower surface of the barrier film to obtain a light conversion film.
  6. 根据权利要求5所述的简化阻隔膜的光转换膜的制备方式，其特征在于，在步骤(1)所述阻隔膜的制备中，将所述CBC和所述EVOH混合研磨至0.5mm，所述CBC和所述EVOH的质量比为1:0.5，所述光致发光材料和所述阻隔共聚物材料的质量比为1：0.056～1:0.12，混合物A和所述TiO 2的质量比为1:0.1～1:0.5，所述受阻酚类抗氧剂占复合共聚物质量的1.5％，所述白油占复合共聚物质量的 0.2％。 The method for preparing a light conversion film of a simplified barrier film according to claim 5 is characterized in that, in the preparation of the barrier film in step (1), the CBC and the EVOH are mixed and ground to 0.5 mm, the mass ratio of the CBC and the EVOH is 1:0.5, the mass ratio of the photoluminescent material and the barrier copolymer material is 1:0.056 to 1:0.12, the mass ratio of the mixture A to the TiO2 is 1:0.1 to 1:0.5, the hindered phenol antioxidant accounts for 1.5% of the mass of the composite copolymer, and the white oil accounts for 0.2% of the mass of the composite copolymer.
  7. 根据权利要求5所述的简化阻隔膜的光转换膜的制备方式，其特征在于，在步骤(1)所述阻隔膜的制备中，将混合物A、TiO 2、受阻酚类抗氧剂、白油、其他添加剂依次放入搅拌机进行800～1000r/min搅拌混合20～25min，混合结束后放入190～220℃造粒机，通过造粒机进行熔融、拉料、冷却、切断，得到复合共聚物，将复合共聚物通过流延机进行流延辊压，得到薄膜状的阻隔膜，所述阻隔膜的薄膜厚度为30～60μm。 The method for preparing a light conversion film of a simplified barrier film according to claim 5 is characterized in that, in the preparation of the barrier film in step (1), the mixture A, TiO2 , hindered phenol antioxidant, white oil and other additives are sequentially placed in a stirrer for stirring and mixing at 800-1000 r/min for 20-25 min, and after mixing, they are placed in a granulator at 190-220°C, and melted, pulled, cooled and cut by the granulator to obtain a composite copolymer, and the composite copolymer is cast and rolled by a casting machine to obtain a thin film barrier film, wherein the film thickness of the barrier film is 30-60 μm.
  8. 根据权利要求5所述的简化阻隔膜的光转换膜的制备方式，其特征在于，在步骤(2)所述光转换膜的制备中，所述阻隔层的厚度为0.1μm。The method for preparing a light conversion film of a simplified barrier film according to claim 5 is characterized in that, in the preparation of the light conversion film in step (2), the thickness of the barrier layer is 0.1 μm.
PCT/CN2022/133359 2022-10-09 2022-11-22 Light conversion film with simplified barrier film and preparation method therefor WO2024077717A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211229325.8A CN115284513B (en) 2022-10-09 2022-10-09 Light conversion film for simplifying barrier film
CN202211229325.8 2022-10-09

Publications (1)

Publication Number Publication Date
WO2024077717A1 true WO2024077717A1 (en) 2024-04-18

Family

ID=83819466

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/133359 WO2024077717A1 (en) 2022-10-09 2022-11-22 Light conversion film with simplified barrier film and preparation method therefor

Country Status (2)

Country Link
CN (1) CN115284513B (en)
WO (1) WO2024077717A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115284513B (en) * 2022-10-09 2023-01-03 广域兴智能(南通)科技有限公司 Light conversion film for simplifying barrier film

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150045082A (en) * 2013-10-18 2015-04-28 동우 화인켐 주식회사 Optical film
US20150179840A1 (en) * 2012-08-09 2015-06-25 Sony Corporation Light receiving/emitting element, solar cell, optical sensor, light emitting diode, and surface emitting laser element technical field
CN106711345A (en) * 2015-11-12 2017-05-24 宁波长阳科技股份有限公司 Flexible transparent barrier film and preparation method thereof
CN107482131A (en) * 2017-08-14 2017-12-15 宁波安特弗新材料科技有限公司 A kind of Obstruct membrane and preparation method thereof
CN109795177A (en) * 2018-12-27 2019-05-24 张家港钛光新材料科技有限公司 A kind of band turns application of the photoresist diaphragm in photovoltaic cell laying structure
CN111716857A (en) * 2020-06-12 2020-09-29 江南大学 Melt co-extrusion multilayer composite high-barrier film, preparation method and application thereof
CN111849155A (en) * 2020-08-03 2020-10-30 湖南工业大学 Single-layer nylon composite film and preparation method and application thereof
CN113376716A (en) * 2021-06-21 2021-09-10 中国科学院光电技术研究所 Method for coating antireflection film on surface of diffraction optical device
CN115139605A (en) * 2022-06-16 2022-10-04 广域兴智能(南通)科技有限公司 Synthesis method and material using cyclic block copolymer and quantum dots
CN115284513A (en) * 2022-10-09 2022-11-04 广域兴智能(南通)科技有限公司 Light conversion film for simplifying barrier film and manufacturing method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107650452B (en) * 2017-01-05 2019-10-22 武汉保丽量彩科技有限公司 Antioxidant quantum dot polymer optical film and preparation method and application thereof
EP3476593A1 (en) * 2017-10-24 2019-05-01 Renolit SE Laminate structure for barrier packaging
CN112026317A (en) * 2020-09-09 2020-12-04 浙江驰怀烫印科技股份有限公司 Anti fold high separation complex film

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150179840A1 (en) * 2012-08-09 2015-06-25 Sony Corporation Light receiving/emitting element, solar cell, optical sensor, light emitting diode, and surface emitting laser element technical field
KR20150045082A (en) * 2013-10-18 2015-04-28 동우 화인켐 주식회사 Optical film
CN106711345A (en) * 2015-11-12 2017-05-24 宁波长阳科技股份有限公司 Flexible transparent barrier film and preparation method thereof
CN107482131A (en) * 2017-08-14 2017-12-15 宁波安特弗新材料科技有限公司 A kind of Obstruct membrane and preparation method thereof
CN109795177A (en) * 2018-12-27 2019-05-24 张家港钛光新材料科技有限公司 A kind of band turns application of the photoresist diaphragm in photovoltaic cell laying structure
CN111716857A (en) * 2020-06-12 2020-09-29 江南大学 Melt co-extrusion multilayer composite high-barrier film, preparation method and application thereof
CN111849155A (en) * 2020-08-03 2020-10-30 湖南工业大学 Single-layer nylon composite film and preparation method and application thereof
CN113376716A (en) * 2021-06-21 2021-09-10 中国科学院光电技术研究所 Method for coating antireflection film on surface of diffraction optical device
CN115139605A (en) * 2022-06-16 2022-10-04 广域兴智能(南通)科技有限公司 Synthesis method and material using cyclic block copolymer and quantum dots
CN115284513A (en) * 2022-10-09 2022-11-04 广域兴智能(南通)科技有限公司 Light conversion film for simplifying barrier film and manufacturing method thereof

Also Published As

Publication number Publication date
CN115284513A (en) 2022-11-04
CN115284513B (en) 2023-01-03

Similar Documents

Publication Publication Date Title
EP3244238B1 (en) Diffuse reflection material, diffuse reflection layer, wavelength conversion device and light source system
WO2024077717A1 (en) Light conversion film with simplified barrier film and preparation method therefor
CN108388050B (en) Preparation method of quantum dot film light guide assembly and corresponding backlight module
DE102012106769B4 (en) Wavelength conversion structure, manufacturing method thereof and light-emitting device having the wavelength change structure
KR101920857B1 (en) Optoelectronic component and method for producing an optoelectronic component
CN1533610A (en) Transparent substrate equipped with electrode
CN107966855A (en) A kind of green quantum dot film and its backlight module
TW201341335A (en) Bismuth borate glass encapsulant for LED phosphors
US20140141205A1 (en) Method for producing a conversion element, and conversion element
CN109713026A (en) A kind of silicon substrate electroluminescence display panel and its manufacturing method, display device
CN104812869B (en) Wavelength convert polymer film
CN110003805A (en) One kind three layers of highly reliable high-gain EVA and PO composite photo voltaic glue film and preparation method thereof
WO2018145672A1 (en) Long-lasting light conversion film and preparation method therefor
CN108058411A (en) A kind of method that biaxial tension prepares quantum dot composite membrane
CN109301056A (en) A kind of LED light source and preparation method thereof, backlight, display device
CN106842702A (en) Quantum dot diaphragm, its preparation method and its backlight module and liquid crystal display
CN112285809A (en) Optical diaphragm and preparation method and application thereof
CN209182545U (en) A kind of Quantum Dot Glass light guide plate and backlight module
CN108597386A (en) Color film, micro- LED component and preparation method thereof, display device
US20140209169A1 (en) GLASS SUBSTRATE FOR CdTe SOLAR CELL, AND SOLAR CELL
CN106873242A (en) A kind of edge sealing structure of quantum dot fluorescence film
JPWO2017086319A1 (en) Protective film and wavelength conversion sheet
CN110416258A (en) Display device and preparation method thereof
CN111650678A (en) High-brightness quantum dot film
CN209963091U (en) Composite luminous substrate