WO2019078476A1 - Panneau isolant de fenetre de véhicule en matériau de polycarbonate - Google Patents

Panneau isolant de fenetre de véhicule en matériau de polycarbonate Download PDF

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Publication number
WO2019078476A1
WO2019078476A1 PCT/KR2018/009919 KR2018009919W WO2019078476A1 WO 2019078476 A1 WO2019078476 A1 WO 2019078476A1 KR 2018009919 W KR2018009919 W KR 2018009919W WO 2019078476 A1 WO2019078476 A1 WO 2019078476A1
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WO
WIPO (PCT)
Prior art keywords
polycarbonate
layer
glass
window panel
glass layer
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Application number
PCT/KR2018/009919
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English (en)
Korean (ko)
Inventor
김관호
김진호
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김관호
김진호
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Application filed by 김관호, 김진호 filed Critical 김관호
Publication of WO2019078476A1 publication Critical patent/WO2019078476A1/fr

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    • 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
    • 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
    • B32B17/1055—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 characterized by the resin layer, i.e. interlayer
    • B32B17/10752—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 characterized by the resin layer, i.e. interlayer containing polycarbonate
    • 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
    • B32B27/08—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 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • 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
    • B32B7/022—Mechanical 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
    • 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
    • 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
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness

Definitions

  • the present invention relates to a heat insulating window panel for an automobile polycarbonate material, and more particularly, to a heat insulating window panel of a polycarbonate material for automobile which is formed by forming a polycarbonate layer on a tempered glass to prevent damage and at the same time, .
  • Parts of the front, side or rear of the vehicle may be made of laminated glass or safety glass for mining or to ensure visibility.
  • the front glass can be formed of a highly curved glass, or a safety glass with two glasses bonded with high resistance to temperature changes can be used, and a door glass or a rear glass can be used with a single pane safety glass.
  • the window of an automobile is made of a glass material, the weight increases and scratches can easily occur.
  • development of windows for synthetic resin or plastic materials is under way, but research is proceeding on a method of coating with a synthetic resin material due to reflection characteristics, noise characteristics, or discoloration due to ultraviolet rays.
  • such a coating method is disadvantageous in that the effect of weight reduction or insulation is not large.
  • Patent Publication No. 10-2004-0044541 discloses a glazing panel and coating system made of polycarbonate
  • Patent Publication No. 10-2016-0113334 discloses a low alkali glass which can be used as an automobile window useful for an electrochromic device Laminate products and layered products.
  • the automobile window disclosed in the prior art still has a disadvantage that the heat insulating property or the scratch preventing property is not high.
  • the present invention has been made to solve the problems of the prior art and has the following purpose.
  • the insulating window panel of the automotive polycarbonate material comprises a glass layer 11; A polycarbonate plate material 12 bonded to one side of the glass layer 11; And a polycarbonate film (13a, 13b) bonded to the other side of the glass layer (11) or one side of the polycarbonate plate material (12), wherein the polycarbonate film (13a, 13b) has a light transmittance of 85% , And the surfaces of the polycarbonate films 13a and 13b have a hardness of 75 HRC or more in Rockwell hardness.
  • the polycarbonate film layer 23 which is bonded between the glass layer 11 and the polycarbonate plate 12, and on which adhesive layers 241 and 242 are formed, is bonded.
  • an adhesive layer formed between the glass layer and the polycarbonate plate or a bonding layer formed between the polycarbonate plate and the polycarbonate film becomes a vacuum layer.
  • the polycarbonate films 13a and 13b may be formed of at least one of MTES (methyltriethoxysilane), OTES (octyltriethoxysilane), FTES (fluoro (triethyl) silane), MEMO (trimethoxysilyl) propyl- At least one selected from the group consisting of APTES ((3-aminopropyl) triethoxysilane) and GPTES ((3-glycidoxypropyl) triethoxysilane) in an amount of 0.1 to 20 wt% based on the total weight.
  • MTES methyltriethoxysilane
  • OTES octyltriethoxysilane
  • FTES fluoro (triethyl) silane
  • MEMO trimethoxysilyl propyl- At least one selected from the group consisting of APTES ((3-aminopropyl) triethoxysilane) and GPTES ((3-g
  • the window panel according to the present invention is applied to the front, rear or door glass of various automobiles to provide heat insulation and durability suitable for each automobile.
  • the window panel according to the present invention allows the total weight of the automobile glass to be reduced while preventing the occurrence of scratches.
  • FIG. 1 shows an embodiment of a layer structure of a window panel according to the present invention.
  • Fig. 2 shows another embodiment of the layer structure of the window panel according to the present invention.
  • Fig. 3 shows another embodiment of the layer structure of the window panel according to the present invention.
  • FIG. 1 shows an embodiment of a layer structure of a window panel according to the present invention.
  • a heat insulating window panel of a polycarbonate material for an automobile comprises a glass layer 11; A polycarbonate plate material 12 bonded to one side of the glass layer 11; And a polycarbonate film (13a, 13b) bonded to the other surface of the glass layer (11) or one surface of the polycarbonate plate material (12), wherein the polycarbonate film (13a, 13b) has a light transmittance of 85% , And the surfaces of the polycarbonate films 13a and 13b have Vickers hardness of 200 HVI or more.
  • the glass layer 11 may be synthetic glass, tempered glass or similar glass for automobiles, such as safety glass or laminated glass.
  • the glass layer 11 may have a thickness of 2 to 6 mm, depending on the arrangement position, and may be made, for example, of a structure in which a single piece glass having a thickness of 2 to 3 mm is adhered by an adhesive film.
  • a polycarbonate plate material 12 may be bonded to one side of the glass layer 11. [ The polycarbonate plate 12 may have the function of improving the heat insulation, improving the mechanical strength or reducing the noise, and may be bonded to the glass layer 11 by various adhesives.
  • the polycarbonate plate material 12 may be formed to have a thickness sufficiently smaller than the thickness of the glass layer 11 and may be made to have a thickness of 1/20 to 3/5 of the thickness of the glass layer 11 . Also, in the case where the glass layer 11 is formed of at least two laminated glass, one laminated glass can be replaced by the polycarbonate laminate 12. Also, when the window of the automobile is composed of one glass layer 11, the thickness of the glass layer 11 can be made relatively thin.
  • the polycarbonate plate 12 can be made of a soft or rigid polycarbonate material, and can be formed, for example, of polycarbonate foam.
  • the polycarbonate plate 12 has a density of 1.20 to 1.22 g / cm3, a thermal conductivity of 0.19 to 0.22 W / (mK), a linear expansion coefficient of 65 to 70 x 10-6 / K, a refractive index of 1.584 to 1.586, Can be made to be 1.2 to 1.3 kJ / (kgK). Further, it can be made to have a light transmittance of 75% or more, preferably 80 to 95%.
  • the polycarbonate foam can be made by foaming the polycarbonate particles with carbon dioxide.
  • a polycarbonate foam having a cell size of 5.0 to 18.0 ⁇ ⁇ is produced with a density of 0.35 to 1.10 g / cm3 by foaming with supercritical carbon dioxide at a saturation temperature of 20 to 30 ⁇ ⁇ at a pressure of 2 to 6 MPa Can be.
  • the surface of the polycarbonate may be coated with a light-transmitting metal to protect the surface hardness of the polycarbonate, or the surface of the polycarbonate may be protected with a metal film.
  • the surface of the polycarbonate may be coated with aluminum oxide (Al 2 O 3 ) of 1.0 to 100 ⁇ m or coated with an aluminum oxide film.
  • the aluminum oxide coating can be produced, for example, by powdery aluminum oxide having an average diameter of 0.1 to 0.9 mu m, and the aluminum oxide film is formed by coating an aluminum oxide powder having the diameter mentioned above with a transparent synthetic resin material Can be.
  • the glass layer 11 and the polycarbonate plate 12 may be bonded to each other by an organic or inorganic adhesive, or may be separated from each other by a vacuum layer.
  • the organic or inorganic adhesive may be, but is not limited to, silicone, acrylic, polyvinyl butyral (PVB) or similar adhesives.
  • the adhesive may be a transparent adhesive and the adhesive may be formed such that a vacuum layer is formed between the glass layer 11 and the polycarbonate plate 12.
  • the vacuum layer may be formed to a thickness of, for example, 10 to 100 mu m and may be maintained at a gas pressure of 0.1 bar or less, preferably a pressure of 0.01 bar or less, and most preferably a pressure of 0.001 bar or less.
  • the vacuum layer may be sealed by an adhesive or may be held by a sealing means for sealing both edges of the glass layer 11 and the polycarbonate sheet material 12 to each other.
  • a material layer such as porous fumed silica may be coupled to the outside of the polycarbonate plate 12 to form a vacuum layer and be sealed.
  • the formation of the vacuum layer by the adhesive can be accomplished by a method in which the adhesive is applied in a discrete structure and a hollow path is formed in connection with each other.
  • the vacuum layer may also be formed in such a way that the adhesive is applied to the interconnected or isolated paths.
  • the adhesive layer and the vacuum layer can be formed independently.
  • the vacuum layer can be formed in such a manner that the edge portion of the adhesive layer is relatively thicker than the other portions.
  • a polycarbonate film 13a having a scratch-preventing function can be adhered to one side of the polycarbonate plate 12 by an adhesive.
  • the polycarbonate film 13a may be independently formed in a film form and bonded to the polycarbonate plate 12 by an adhesive.
  • a polycarbonate film layer may be formed in such a manner that the polycarbonate plate material 12 is subjected to a scratch-resistant coating.
  • the polycarbonate film 13a or the coating layer may have a thickness of, for example, 10 to 1,000 mu m.
  • the polycarbonate film 13a or the coating layer may have a scratch preventing function, a hardness improving function, a heat deformation preventing function or the like.
  • the polycarbonate film 13a may be formed by adding an inorganic compound to an alkoxysilane on a polycarbonate substrate to form silica through hydrolysis and condensation reaction.
  • the inorganic compounds may be selected from the group consisting of MTES (methyltriethoxysilane), OTES (octyltriethoxysilane), FTES (fluoro (triethyl) silane), MEMO (3 trimethoxysilyl) propyl- methacrylate, APTES (3-aminopropyl) triethoxysilane, -glycidoxypropyl) triethoxysilane).
  • At least one inorganic compound may be added to tetraethoxysilane (TEOS) in an amount of 0.1 to 20 wt% based on the total weight of the compound for the coating to form a coating solution.
  • TEOS tetraethoxysilane
  • Such a silica coating can improve the physical properties of the polycarbonate substrate and can increase the hardness to a level of 25 SIMILAR 100 HRC for a coating thickness of, for example, 1.0 to 4.0 mu m, The hardness can be increased in proportion thereto.
  • the coating thickness can be, for example, from 1.0 to 20 microns in thickness and can be improved with increasing coating thickness to hardness and other physical properties.
  • the polycarbonate films 13a and 13b can be made in such a manner that glass fibers are added to the unsaturated polycarbonate, and for example, 5 to 40 wt% of glass fibers can be added to produce a polycarbonate film.
  • the polycarbonate films 13a and 13b thus formed have a thickness of 50 to 500 mu m and a specific gravity of 1.3 to 1.5; Tensile Strength 15,000 to 22,000 psi, compressive Strength 15,000 to 20,000 psi; Rockwell hardness 85 to 95 HRC; A thermal expansion coefficient of 1.0 to 2.0 x 10 < -5 > cm / cm / K; And a thermal conductivity of 6.0 to 8.0 x 10 -4 cal / cm-s- ⁇ .
  • the polycarbonate films 13a and 13b can be made in various ways and are not limited to the embodiments shown.
  • the polycarbonate films 13a and 13b may be formed on the polycarbonate plate 12 or may be formed on the outside of the polycarbonate plate 12 and the glass layer 11.
  • the films 13a and 13b to be bonded to the polycarbonate plate 12 may be formed integrally with the polycarbonate plate 12 by a hydrolytic condensation method in the manner described above or they may be formed independently, (Not shown).
  • the polycarbonate film 13a, 13b or the coating layer may have a smaller thickness than the polycarbonate plate, for example, the thickness of the polycarbonate plate 12 may be 1 / 1,000 to 1/2, Do not.
  • a layer with various properties can be added to the window panel, and various adhesives can be used for bonding the different layers.
  • Fig. 2 shows another embodiment of the layer structure of the window panel according to the present invention.
  • one or two polycarbonate film layers 23, 25 having the same or different physical properties may be bonded to both sides of the polycarbonate plate 12.
  • one polycarbonate film layer 23 may be disposed between the glass layer 11 and the polycarbonate plate material 12, and two polycarbonate film layers 23 may be disposed on the other surface of the polycarbonate plate material 12 .
  • the 1, 2 polycarbonate film layers 23, 25 may have the same or different physical properties.
  • one polycarbonate film layer (23, 25) can be made of a workable or stretchable polycarbonate material, and two polycarbonate film layers (23, 25) can be made a structure having a high hardness.
  • the 1 or 2 polycarbonate film layers 23 and 25 may be formed to have different thicknesses.
  • the same or different physical properties can be formed by making the inorganic compounds added in the hydrolysis and condensation reaction described above to be different from each other or having different thicknesses.
  • the one or two polycarbonate film layers 23 and 25 may be formed by coating one or both sides of the polycarbonate plate 12 or by attaching an independently made polycarbonate film to one or both sides of the polycarbonate plate 12 Or the like.
  • the two polycarbonate film layers 25 may be formed by coating, and one polycarbonate film layer 23 may be formed by forming adhesive layers 241 and 242 on both sides of the independently made polycarbonate film, Layer 11 and the polycarbonate plate 12.
  • a vacuum layer may be respectively formed on the surface on which the first and second adhesive layers 241 and 242 are formed, or a vacuum layer may be formed on any one of the surfaces.
  • the polycarbonate plate 12 may be made from the polycarbonate foam described above, or may be made of a polycarbonate with improved physical properties.
  • the polycarbonate plate 12 may comprise Al 2 O 3 nanoparticles or similar metal oxide nanoparticles.
  • the tensile strength or hardness of the polycarbonate plate material 12 can be increased.
  • the polycarbonate plate 12 containing 1.0 to 4.0 wt% of Al 2 O 3 nanoparticles may have tensile strength and hardness of 4 to 10% and 10 to 20%.
  • the polycarbonate plate 12 or polycarbonate film layers 23 and 25 may be formed in a variety of ways and are not limited to the embodiments shown.
  • Fig. 3 shows another embodiment of the layer structure of the window panel according to the present invention.
  • an adhesive layer 311 formed between the glass layer 11 and the polycarbonate plate 12 or a bonding layer 312 formed between the polycarbonate plate 12 and the polycarbonate film 13a Can be a vacuum layer.
  • the polycarbonate plate 12 may comprise metal nanoparticles, and the polycarbonate films 13a and 13b may comprise glass fibers or include silane-based compounds.
  • An adhesive layer 311 and a bonding layer 312 may be formed on both sides of the polycarbonate films 13a and 13b.
  • the adhesive layer 311 or the bonding layer 312 may include porous nanoparticles.
  • the adhesive layer 311 is formed along the edge portion of the polycarbonate plate material 12 so that the inside of the adhesive layer 311 becomes a vacuum layer and the bonding layer 312 may include porous nanoparticles.
  • the fusing layer 312 may comprise, for example, porous fume silica, porous nanoclay particles, metals such as Al, Mg or Fe, and the porous fumed silica or porous nanoclay particles may have a mean diameter of 1 to 400 nm And may be added in an amount of 1 to 20 wt% based on the total weight of the bonding layer 312. And may be porous nanoparticles having porosity of 20 to 60%.
  • the impact resistance can be improved by the bonding layer 312 and the adhesive layer 311 of the vacuum layer structure as described above, and the noise inflow characteristics can be improved. Further, the bonding layer 312 itself is made of a vacuum layer, so that the heat insulating property can be improved.
  • the functional layer 32 such as a light absorbing layer may be disposed outside the polycarbonate films 13a and 13b, but is not necessarily required.
  • the functional layer 32 can be, for example, a film capable of absorbing ultraviolet rays or infrared rays, or can be made into a light scattering structure.
  • the functional layer 32 can be made of an embossed structure, whereby ultraviolet rays or infrared rays are scattered and converted into heat to form a heat curtain in front of the polycarbonate films 13a and 13b, .
  • the adhesive layer 311 or the bonding layer 312 can be made in various structures and is not limited to the illustrated embodiment.
  • the edge of the adhesive layer 311 or the bonding layer 312 may be sealed by a barrier adhesive CL such as acrylic adhesive.
  • a barrier adhesive CL such as acrylic adhesive
  • the peripheral surfaces of the glass layer 11 and the polycarbonate film 12 can be sealed by a sealing adhesive.
  • the barrier adhesive (CL) or the hermetic adhesive may be gas impermeable, and the barrier adhesive (CL) may be made of a transparent material.
  • the barrier adhesive (CL) or the sealant can be made to have a thickness of 1 to 20 mu m, but is not limited thereto.
  • the window panel according to the present invention is applied to the front, rear or door glass of various automobiles to provide heat insulation and durability suitable for each automobile.
  • the window panel according to the present invention allows the total weight of the automobile glass to be reduced while preventing the occurrence of scratches.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un panneau isolant de fenêtre de véhicule constitué d'un matériau de polycarbonate et, plus particulièrement, un panneau isolant de fenêtre de véhicule constitué d'un matériau de polycarbonate, le panneau empêchant les dommages et améliorant l'isolation thermique simultanément étant donné qu'une couche constituée d'un matériau de polycarbonate est formée sur du verre trempé. Le panneau isolant de fenêtre de véhicule constitué d'un matériau de polycarbonate comprend : une couche de verre (11); une feuille de polycarbonate (12) accouplée à une surface de la couche de verre (11); et des films de polycarbonate (13a, 13b) accouplés à une autre surface de la couche de verre (11) ou à une surface de la feuille de polycarbonate (12), les films de polycarbonate (13a, 13b) ayant une transmittance de lumière de 85 % ou plus, et la surface des films de polycarbonate (13a, 13b) ayant une dureté Rockwell de 75 HRC ou plus.
PCT/KR2018/009919 2017-10-20 2018-08-28 Panneau isolant de fenetre de véhicule en matériau de polycarbonate WO2019078476A1 (fr)

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KR10-2017-0136200 2017-10-20
KR1020170136200A KR102049842B1 (ko) 2017-10-20 2017-10-20 자동차용 폴리카보네이트 소재의 단열 윈도우 패널

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