WO2014178540A1 - 진공단열재용 외피재 및 이를 포함하는 고성능 진공단열재 - Google Patents
진공단열재용 외피재 및 이를 포함하는 고성능 진공단열재 Download PDFInfo
- Publication number
- WO2014178540A1 WO2014178540A1 PCT/KR2014/002756 KR2014002756W WO2014178540A1 WO 2014178540 A1 WO2014178540 A1 WO 2014178540A1 KR 2014002756 W KR2014002756 W KR 2014002756W WO 2014178540 A1 WO2014178540 A1 WO 2014178540A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- vacuum insulation
- outer shell
- shell material
- vacuum
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 34
- 239000012212 insulator Substances 0.000 title abstract description 24
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 56
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 56
- 239000011162 core material Substances 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 229920006267 polyester film Polymers 0.000 claims abstract description 23
- 239000012774 insulation material Substances 0.000 claims description 74
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 53
- 239000011257 shell material Substances 0.000 claims description 45
- 229910052782 aluminium Inorganic materials 0.000 claims description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 41
- 238000009413 insulation Methods 0.000 claims description 28
- 239000011888 foil Substances 0.000 claims description 26
- 239000010410 layer Substances 0.000 claims description 22
- 239000011148 porous material Substances 0.000 claims description 17
- -1 Polypropylene Polymers 0.000 claims description 16
- 230000008021 deposition Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 239000003365 glass fiber Substances 0.000 claims description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 12
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
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- 239000000853 adhesive Substances 0.000 claims description 4
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- 238000005266 casting Methods 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 abstract 1
- 230000004888 barrier function Effects 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 18
- 230000007774 longterm Effects 0.000 description 18
- 239000011810 insulating material Substances 0.000 description 15
- 229920002799 BoPET Polymers 0.000 description 13
- 238000000151 deposition Methods 0.000 description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000000292 calcium oxide Substances 0.000 description 6
- 235000012255 calcium oxide Nutrition 0.000 description 6
- 230000035699 permeability Effects 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000011491 glass wool Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910021485 fumed silica Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
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- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 239000004964 aerogel Substances 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
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- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Definitions
- An outer shell material for a vacuum insulation material and a high performance vacuum insulation material including the same.
- inorganic compounds such as glass wool, fumed silica, and aerogels are used as core materials
- the outer skin material is nylon / PET / aluminum foil, or an aluminum deposition layer.
- PP polypropylene
- moisture absorbents such as quicklime (CaO), zeolite, and silica gel and metal powders are used to secure long-term performance of the vacuum insulation material.
- the case of the vacuum insulation material is exposed to external shocks and external environmental changes, that is, changes in external temperature and humidity, and also affects the effect and performance of the vacuum insulation material. .
- One embodiment of the present invention provides an outer shell material for a vacuum insulation material having excellent barrier performance even without containing aluminum foil.
- Another embodiment of the present invention provides a vacuum insulating material excellent in thermal performance and long-term performance, including the outer shell material for the vacuum insulating material.
- At least one polyester film; Polyvinyl alcohol (Polyvinyl Alcohol, PVOH) film is bonded to the lower polyester film; And it provides an outer shell material for a vacuum insulation material comprising a sealing film adhered to the lower polyvinyl alcohol film sequentially.
- Polyvinyl alcohol (Polyvinyl Alcohol, PVOH) film is bonded to the lower polyester film; And it provides an outer shell material for a vacuum insulation material comprising a sealing film adhered to the lower polyvinyl alcohol film sequentially.
- the polyvinyl alcohol film may have a thickness of about 10 ⁇ m to about 30 ⁇ m.
- the polyvinyl alcohol film may be formed in a single layer or multiple layers.
- the sealing film may include an unstretched (Casting Polypropylene, CPP) film.
- the sealing film may have a thickness of about 20 ⁇ m to about 40 ⁇ m.
- the polyester film may include at least one aluminum deposition film (Vacuumm Metalized PolyEthylene Terephthalate Film, VM-PET) film.
- VM-PET Vauumm Metalized PolyEthylene Terephthalate Film
- the aluminum deposition film may have a thickness of about 5 ⁇ m to about 20 ⁇ m.
- the polyester film, the polyvinyl alcohol film and the sealing film may be adhered by polyurethane-based resin, respectively.
- the adhesive strength between layers of the polyurethane-based resin may be about 200 gf / 15 mm or more.
- the outer shell material for the vacuum insulation material may not further include an aluminum foil.
- a core material made of glass fiber; And it provides a vacuum insulating material containing the outer shell material for the vacuum insulating material containing the core material and pressure-reduced inside.
- the core material may be a laminate in which one or more boards including glass fibers are laminated.
- the pore size of the core material may be about 50 ⁇ m or less.
- It may further include a getter material attached to or inserted into the core material.
- the outer shell material for the vacuum insulation material may have excellent barrier performance to block the inflow of external gas or moisture.
- Vacuum insulation using the outer shell material for the vacuum insulation material can be improved thermal performance and long-term durability at the same time.
- FIG. 1 illustrates paths 1, 2, and 3 through which moisture and air outside the vacuum insulator penetrate into the inside.
- Figure 2 is an exploded cross-sectional view of the outer shell material for vacuum insulation in accordance with an embodiment of the present invention.
- Example 3 is an exploded cross-sectional view of the outer shell material for vacuum insulation according to Example 1, Comparative Example 1 and Comparative Example 2.
- Figure 4 is a graph showing the thermal conductivity over time of the vacuum insulating material including the outer cover material for the vacuum insulating material of Example 1 and Example 2.
- FIG. 5 is a graph illustrating thermal conductivity over time of a vacuum insulation material including the outer insulation material for the vacuum insulation material of Example 1, Comparative Example 1, and Comparative Example 2.
- FIG. 5 is a graph illustrating thermal conductivity over time of a vacuum insulation material including the outer insulation material for the vacuum insulation material of Example 1, Comparative Example 1, and Comparative Example 2.
- FIG. 6 is an exploded cross-sectional view of a vacuum insulator according to another embodiment of the present invention.
- At least one polyester film Polyvinyl alcohol (Polyvinyl Alcohol, PVOH) film adhered to the lower polyester film; And it provides an outer shell material for a vacuum insulation material comprising a sealing film adhered to the lower polyvinyl alcohol film sequentially.
- Polyvinyl alcohol Polyvinyl Alcohol, PVOH
- the outer material is mainly composed of a multilayer film including a metal deposition film or aluminum foil, glass fiber, fumed silica, etc. are applied to the core material.
- a getter is applied to adsorb moisture, air, and gas inside the vacuum insulator.
- the thermal performance of the vacuum insulation material is worse than the initial thermal performance over time, the main reason is that the pressure inside the vacuum insulation material is increased by the moisture and air introduced from the outside.
- the barrier material moisture permeability, oxygen permeability
- the barrier material is excellent, which is advantageous in terms of long-term durability of the vacuum insulation material, but a heat bridge phenomenon occurs due to heat transfer by aluminum foil. Accordingly, there was a problem that the thermal performance of the entire vacuum insulation material also deteriorated.
- FIG. 1 illustrates paths 1, 2, and 3 through which moisture and air outside the vacuum insulator penetrate into the inside.
- a path through which moisture and air outside the vacuum insulation material penetrate into the vacuum insulation material may be divided into three types.
- the present invention provides a vacuum insulating material outer shell material excellent in long-term durability and thermal performance, even though it does not include an aluminum foil that generates a thermal bridge phenomenon in the outer shell material for vacuum insulation.
- the outer cover material for the vacuum insulation material is at least one polyester film; Polyvinyl alcohol (Polyvinyl Alcohol, PVOH) film adhered to the lower polyester film; And a sequential lamination structure of a sealing film adhered to the lower polyvinyl alcohol film.
- Polyvinyl alcohol Polyvinyl Alcohol, PVOH
- FIG 2 is an exploded cross-sectional view of the outer shell material for vacuum insulation in accordance with an embodiment of the present invention, referring to Figure 2, the outer shell material for vacuum insulation 100 is a polyester film 10, polyvinyl alcohol from above Alcohol, PVOH) film 20, the sealing film 30 may be included.
- the outer shell material for vacuum insulation 100 is a polyester film 10, polyvinyl alcohol from above Alcohol, PVOH) film 20, the sealing film 30 may be included.
- the vacuum insulation material In the case of a vacuum insulation material using glass fiber as a core material, it is common to make the vacuum insulation material in the form of a protruding panel in the corner portion, and an inevitable portion of the outer cover material for the vacuum insulation material is generated.
- the outer shell material for the vacuum insulation material does not reduce the barrier performance despite the folding of the outer shell material, thereby preventing moisture and air from penetrating into the folded portion of the outer shell material.
- the above-described folded portion of the outer cover material may be in the direction of No. 3 in FIG. 1, but the penetration of external moisture and air due to the folded portion may be affected by the PVOH film 20 of the outer cover material for vacuum insulation.
- the PVOH film 20 has no barrier performance deterioration despite several foldings, and thus may maintain excellent barrier performance.
- the PVOH film 20 may have a thickness of about 10 ⁇ m to about 30 ⁇ m.
- the PVOH film has the advantage that the barrier performance is improved by maintaining the thickness in the above range, it is possible to easily implement the long-term durability improvement effect of the vacuum insulation.
- the PVOH film may be formed in a single layer or multiple layers.
- the PVOH film may serve as a barrier layer that blocks the inflow of external gas or moisture.
- the PVOH film 20 may not include aluminum foil.
- barrier layers typically include aluminum foil to block external gas or moisture ingress.
- the PVOH film does not include aluminum foil, it is possible to implement an outer shell material for a vacuum insulation material having excellent initial performance and long-term durability by suppressing thermal bridge phenomenon caused by aluminum foil.
- the PVOH film is well tolerated at high temperatures, and despite the multiple folding barrier performance is superior to EVOH (Ethylenevinyl alcohol) film. Therefore, in spite of the folding and bending phenomenon of the outer cover material for the vacuum insulation material, which is indispensable in the manufacture of the vacuum insulation material, the PVOH film can still play a role of blocking the inflow of external gas or moisture, and the folding and bending Deterioration of barrier performance due to the part does not occur.
- EVOH Ethylenevinyl alcohol
- the conventional sealing layer is a polyethylene film is applied, in the case of polyethylene film oxygen permeability of about 3000cc / m 2 day to about 4000cc / m 2 day moisture barrier performance is not good, furthermore the barrier performance is rapidly reduced at high temperature There was a downside.
- the sealing film 30 is affected by the sealing film 30, and the sealing film 30 includes a CPP (Casting Polypropylene) film. can do.
- the sealing film 30 includes an unstretched (Casting Polypropylene, CPP) film having excellent barrier performance, and may maximize the barrier performance of the outer cover material for the vacuum insulation material together with the PVOH film 20, and the sealing film ( 30) may be in close contact with the surface of the core material.
- unstretched Chemicallypropylene, CPP
- the CPP film is a film having excellent heat resistance applied to a conventional sealing film and has excellent barrier performance compared to polyethylene film at room temperature as well as at high temperature, and is excellent for use as a sealing film 30 attached to a core material.
- the oxygen permeability of the CPP film is about 1300cc / m 2 day moisture at room temperature only about 1/3 of the polyethylene film, the moisture permeability of the polyethylene film is about 14g / m 2 day level, the In the case of CPP film, about 7 g / m 2 day is maintained at 1/2 of the moisture permeability of the polyethylene film. Therefore, the sealing film 30 may include the CPP film to block the penetration of external moisture and air through the second direction.
- the thickness of the sealing film 30 may be about 20 ⁇ m to about 40 ⁇ m.
- the sealing film has the advantage of reducing the amount of moisture and air penetrating into the sealing film by maintaining the thickness of the range, as a result can easily implement the effect of improving the long-term durability of the vacuum insulation.
- the outer shell material for the vacuum insulation material may include one or more polyester films on the PVOH film 20.
- the polyester film may serve as a protective layer to protect from external impact and at the same time, may serve as a barrier layer to block the inflow of external gas or moisture.
- the polyester film may include a PVOH film at the bottom at the same time, it is possible to maximize the barrier performance of the vacuum insulation material by the PVOH film.
- the polyester film 10 may include at least one layer of aluminum deposition film (Vacuumm Metalized PolyEthylene Terephthalate Film, VM-PET) film (11, 12), at least one layer of the VM-PET film
- VM-PET Vauumm Metalized PolyEthylene Terephthalate Film
- the VM-PET films 11 and 12 refer to a film having an aluminum deposition layer on one surface of a polyethylene terephthalate film, and the optical density (OD) value of the VM-PET film is about 3.0 or more to provide barrier properties. Can be implemented. In addition, when the VM-PET films 11 and 12 are used, the thickness of the aluminum deposition layer may be about 500 GPa or more to implement barrier characteristics.
- the VM-PET films 11 and 12 may have a thickness of about 5 ⁇ m to about 20 ⁇ m. By maintaining the thickness of the VM-PET film in the above range, the stiffness of the outer cover material is appropriately maintained, thereby minimizing the defect rate that may occur during vacuum insulation preparation.
- the aluminum deposition film is a film having an aluminum deposition layer on one surface of the PET film, it can expose the PET film to the outside.
- the aluminum deposition layer is located at the outermost portion, aluminum may be oxidized, and scratches or cracks may occur due to hand or external impact.
- the aluminum deposition layer inside, the PET film outside it is possible to minimize the impact by the outside of the aluminum deposition film, and at the same time to ensure the barrier performance to block the inflow of external gas or moisture.
- the polyester film, the polyvinyl alcohol film and the sealing film may be adhered by polyurethane-based resin, respectively.
- the interlayer adhesive strength of the polyurethane-based resin may be 200gf / 15mm or more.
- the adhesive 101 positioned between each film to adhere the film may be a polyurethane resin.
- the outer shell material 100 for the vacuum insulation material includes a laminated structure capable of minimizing heat transfer due to thermal bridge phenomenon and increasing barrier performance, for example, VM-PET to maximize barrier performance.
- the film is composed of two layers, the PVOH film is applied to maintain the folded part barrier performance of the outer cover material for vacuum insulation at the bottom of the VM-PET film, and the CPP to maximize the barrier performance at the sealing part at the lower part of the PVOH film. Film can be applied.
- the outer shell material for the vacuum insulation material does not further include an aluminum foil, and thus a thermal bridge phenomenon that may occur by including the aluminum foil does not occur, thereby preventing deterioration of thermal performance of the entire vacuum insulation material.
- a core material made of glass fiber; And it provides a vacuum insulating material containing the outer shell material for the vacuum insulating material containing the core material and pressure-reduced inside.
- FIG. 6 is an exploded cross-sectional view of a vacuum insulation material according to another embodiment of the present invention, the vacuum insulation material provides a core material 200, the outer shell material 100 for the vacuum insulation material and the getter 300.
- the core material 200 may be made of glass fiber.
- the core material 200 may be used without limitation as long as it is a known core material having heat insulation such as glass wool, glass board, pearlite, fumed silica, and aerogel.
- the core material 200 may not include an organic and inorganic binder, or may form a laminate in which at least one layer of a board including a glass fiber stirred in an aqueous solution containing water or an organic compound is laminated.
- One or more glass wool aggregates or glass wool and boards made of an organic / inorganic binder having a diameter of about 1 ⁇ m to about 10 ⁇ m may be laminated.
- the pore size of the core material may be about 50 ⁇ m or less, specifically about 30 ⁇ m. Pore size means the pores in the pore structure of the porous body, in the core material refers to the pore size between the glass fibers formed by the glass fibers.
- the vacuum insulation material including the polyester film, the polyvinyl alcohol film and the sealing film at the same time, when the pore size of the core material exceeds about 50 ⁇ m, the vacuum insulation material performs over time This lowers the difficulty in securing long-term durability.
- the pore size of the core material is about 50 ⁇ m or less, heat transfer due to convection of the gas that has penetrated from the outside proceeds relatively slowly due to the small pore size, so that even when the same amount of gas penetrates inside, the vacuum insulation material Long-term durability of the can be improved.
- the outer shell material 100 for the vacuum insulation material is as described above.
- the outer shell material 100 for the vacuum insulation material is at least one polyester film; Polyvinyl alcohol (Polyvinyl Alcohol, PVOH) film adhered to the lower polyester film; And a sealing film adhered to the lower portion of the polyvinyl alcohol film.
- Polyvinyl alcohol Polyvinyl Alcohol, PVOH
- the thermal conductivity of the center portion of the vacuum insulation material (direction 1 in FIG. 1) is low, but the thermal conductivity of the corner portion (direction 3 in FIG. 1) is low.
- the thermal conductivity of the entire vacuum insulator deteriorated about two to three times.
- the thermal conductivity of the vacuum insulator is measured differently for each position of the center portion, the corner portion, etc., and the thermal conductivity of the entire area of the vacuum insulator is referred to as the effective thermal conductivity.
- the effective thermal conductivity is actually a value related to consumption efficiency of a refrigerator and energy saving of a building, and is an important value among physical properties of a vacuum insulation material.
- a vacuum insulation material is manufactured in the size of 450 mmX900 mm X20 mm using a vacuum insulation shell material including aluminum foil in the barrier layer
- the thermal conductivity of the central portion of the vacuum insulation material is about 3.5 mW / mK, but the effective thermal conductivity is about 9.6.
- mW / mK greater than the thermal conductivity, it was found that the thermal bridge phenomena caused by the aluminum foil including the shell material for the vacuum insulator made a large difference in the thermal conductivity of the central and corner portions of the vacuum insulator.
- the thermal conductivity of the central portion of the vacuum insulation material was measured at about 3.5 mW / mK, and the effective thermal conductivity was measured at about 4.7 mW / mK. It was found that the difference in thermal conductivity between the center portion and the corner portion of the vacuum insulation material was not large.
- the thermal performance of the vacuum insulator can be improved and the pore size of the core material can be reduced to about 50 ⁇ m, and the pore size of the core material is about 50 ⁇ m or less.
- the thermal performance of the vacuum insulator can be improved and the pore size of the core material can be reduced to about 50 ⁇ m, and the pore size of the core material is about 50 ⁇ m or less.
- the vacuum insulation material may further include a getter material 300 for the purpose of moisture absorption inside the vacuum insulation material.
- the getter material 300 is applied to the core material or is applied to the core material. In FIG. 5, an embodiment in which the getter material 300 is inserted and applied to the core material 100 is illustrated.
- the getter material 300 may include quicklime (CaO) powder having a purity of 95% or higher, and selected from zeolite, cobalt, lithium, activated carbon, aluminum oxide, barium, calcium chloride, magnesium oxide, magnesium chloride, iron oxide, zinc, and zirconium. It may include one or more materials.
- quicklime (CaO) powder having a purity of 95% or higher, and selected from zeolite, cobalt, lithium, activated carbon, aluminum oxide, barium, calcium chloride, magnesium oxide, magnesium chloride, iron oxide, zinc, and zirconium. It may include one or more materials.
- a 5 mm plate-like board made of a glass fiber aggregate having a diameter of 1 ⁇ m to 6 ⁇ m and an inorganic binder containing silica is laminated one by one by a lamination method to form a composite, and a core material having a pore size of 50 ⁇ m is formed. It was used as a core material for vacuum insulation.
- a getter material prepared by putting 5 g of quicklime (CaO) having a purity of 95% in a pouch was inserted into the core material.
- an outer shell material for vacuum insulation formed of a structure of two layers of VM-PET film 12 ⁇ m, PVOH film 15 ⁇ m, and CPP film 30 ⁇ m was prepared from above, and the film layer was bonded using a polyurethane-based resin.
- the core material was inserted into the outer cover material and sealed at a vacuum degree of 1 Pa to prepare a vacuum insulation material having a size of 200 mm X 200 mm X 8 mm.
- a vacuum insulation material was manufactured in the same manner as in Example 1, except that the pore size of the core material for vacuum insulation material was 80 ⁇ m.
- a vacuum insulation material was prepared in the same manner as in Example 1, except that a three-layered VM-PET film 12 ⁇ m and a linear low density polyethylene (LLDPE) film having a structure of 50 ⁇ m were used.
- LLDPE linear low density polyethylene
- Example 3 is an exploded cross-sectional view of the outer shell material for vacuum insulation according to Example 1, Comparative Example 1 and Comparative Example 2.
- Figure 4 is a graph showing the thermal conductivity over time of the vacuum insulating material including the outer cover material for the vacuum insulating material of Example 1 and Example 2. Referring to Table 1 and Figure 4, the thermal conductivity of the vacuum insulating material of Example 1 was measured to be lower than the thermal conductivity of the vacuum insulating material of Example 2.
- Example 1 the pore size of the core material exceeded 50 ⁇ m, whereas the pore size of the core material was 50 ⁇ m or less. At this time, the thermal conductivity of Example 1 was lower than that of Example 2 despite the passage of time, and it was confirmed that the long-term durability of Example 1 was better.
- the heat insulating properties and the long-term durability can be secured by simultaneously including the core material having a pore size of about 50 ⁇ m or less with the outer cover material for the vacuum insulation material including the PVOH film and not including the aluminum foil. .
- FIG. 5 is a graph illustrating thermal conductivity over time of a vacuum insulation material including the outer insulation material for the vacuum insulation material of Example 1, Comparative Example 1, and Comparative Example 2.
- Example 1 including the outer cover material for vacuum insulation material exhibiting barrier performance with PVOH film or PVOH film and VM-PET film is long-term durability. The performance was also much better.
- Example 1 has a lower overall thermal conductivity than Comparative Example 2 that does not include a PVOH film or aluminum foil, it was found that also excellent long-term durability.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Building Environments (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
- Laminated Bodies (AREA)
Abstract
Description
열전도율(mW/Mk) | |||
1개월 | 2개월 | 3개월 | |
실시예1 | 3.5 | 3.7 | 4.1 |
실시예2 | 3.7 | 5.9 | 8.2 |
열전도율(mW/Mk) | |||
1개월 | 2개월 | 3개월 | |
실시예1 | 3.9 | 4.5 | 5.1 |
비교예1 | 4.3 | 5.1 | 5.8 |
비교예2 | 4.6 | 7.5 | 10.4 |
Claims (14)
Priority Applications (5)
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JP2016511666A JP2016518279A (ja) | 2013-05-03 | 2014-04-01 | 真空断熱材用外皮材及びそれを含む高性能真空断熱材 |
CR20160438A CR20160438A (es) | 2013-05-03 | 2014-04-01 | Dispersión sólida amorfa que comprende taxano, comprimido que comprende la misma, y método para su preparación |
CN201480025127.7A CN105189114A (zh) | 2013-05-03 | 2014-04-01 | 真空绝热材料用外皮材料及包含其的高性能真空绝热材料 |
US14/888,934 US9925747B2 (en) | 2013-05-03 | 2014-04-01 | Outer cover material for vacuum insulator and high-performance vacuum insulator comprising same |
EP14791664.7A EP2993040A4 (en) | 2013-05-03 | 2014-04-01 | EXTERIOR ENVELOPE MATERIAL FOR VACUUM INSULATOR AND HIGH PERFORMANCE VACUUM INSULATION INCLUDING THE SAME |
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KR1020130050044A KR101800047B1 (ko) | 2013-05-03 | 2013-05-03 | 진공단열재용 외피재 및 이를 포함하는 고성능 진공단열재 |
KR10-2013-0050044 | 2013-05-03 |
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US (1) | US9925747B2 (ko) |
EP (1) | EP2993040A4 (ko) |
JP (1) | JP2016518279A (ko) |
KR (1) | KR101800047B1 (ko) |
CN (1) | CN105189114A (ko) |
CR (1) | CR20160438A (ko) |
TW (1) | TWI641488B (ko) |
WO (1) | WO2014178540A1 (ko) |
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-
2014
- 2014-04-01 CR CR20160438A patent/CR20160438A/es unknown
- 2014-04-01 CN CN201480025127.7A patent/CN105189114A/zh active Pending
- 2014-04-01 JP JP2016511666A patent/JP2016518279A/ja active Pending
- 2014-04-01 EP EP14791664.7A patent/EP2993040A4/en not_active Withdrawn
- 2014-04-01 US US14/888,934 patent/US9925747B2/en active Active
- 2014-04-01 WO PCT/KR2014/002756 patent/WO2014178540A1/ko active Application Filing
- 2014-04-30 TW TW103115603A patent/TWI641488B/zh active
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016105077A1 (ko) * | 2014-12-26 | 2016-06-30 | 삼성전자주식회사 | 흡착재, 이를 포함하는 진공단열재 및 냉장고 |
US11077419B2 (en) | 2014-12-26 | 2021-08-03 | Samsung Electronics Co., Ltd. | Adsorbent, vacuum heat insulating material having the same and refrigerator |
WO2017151688A1 (en) * | 2016-02-29 | 2017-09-08 | Alienus Film Llc | Vacuum insulating film |
US10632708B2 (en) | 2016-02-29 | 2020-04-28 | Alienus Film Llc | Insulating film |
CN106515138A (zh) * | 2016-10-21 | 2017-03-22 | 巢湖市伟业玻璃有限公司 | 防火钢化玻璃的制作方法及采用该方法制作的钢化玻璃 |
Also Published As
Publication number | Publication date |
---|---|
US20160082709A1 (en) | 2016-03-24 |
TW201442871A (zh) | 2014-11-16 |
JP2016518279A (ja) | 2016-06-23 |
KR101800047B1 (ko) | 2017-12-20 |
CR20160438A (es) | 2017-01-24 |
EP2993040A1 (en) | 2016-03-09 |
CN105189114A (zh) | 2015-12-23 |
TWI641488B (zh) | 2018-11-21 |
EP2993040A4 (en) | 2016-05-25 |
US9925747B2 (en) | 2018-03-27 |
KR20140131112A (ko) | 2014-11-12 |
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