Composite insulation material for cryogenic cargo holds and cryogenic cargo holds containing the same

Abstract

The present invention provides a composite insulation material comprising a novel vacuum insulation material and rigid polyurethane foam, and offers a composite insulation material for cryogenic cargo warehouses with improved thermal insulation and strength, as well as a cryogenic cargo warehouse containing the same. [Solution] A composite insulation material for cryogenic cargo warehouses comprising a vacuum insulation material 10 and a rigid polyurethane foam covering the surface of the vacuum insulation material, wherein the vacuum insulation material comprises a core material 11, an adsorbent 12, and an outer shell material 13 covering the core material and the adsorbent. The outer shell material is laminated with a film, a metal barrier layer, and an adhesive layer. The film comprises at least one of polyvinylidene chloride (PVDC), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), ethylene-vinyl alcohol copolymer (EVOH), and nylon.

Claims

1. Vacuum insulation material, and, The vacuum insulation material includes a rigid polyurethane foam that encloses the surface of the vacuum insulation material, The aforementioned vacuum insulation material is Core material and Adsorbent, and A composite insulation material for cryogenic cargo warehouses, comprising the aforementioned core material and an outer shell material enclosing an adsorbent.

2. The aforementioned outer shell material is Film and, Metal barrier layer, and A composite thermal insulation material for cryogenic cargo warehouses according to claim 1, wherein an adhesive layer and a laminated layer are formed.

3. The composite thermal insulation material for cryogenic cargo warehouses according to claim 2, wherein the film comprises at least one of polyvinylidene chloride (PVDC), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), ethylene-vinyl alcohol copolymer (EVOH), and nylon.

4. The composite thermal insulation material for cryogenic cargo warehouses according to claim 2, wherein the metal barrier layer comprises at least one of aluminum foil, silver foil, and copper foil.

5. The composite thermal insulation material for cryogenic cargo warehouses according to claim 2, wherein the thickness of the metal barrier layer is 3 μm to 10 μm.

6. The composite thermal insulation material for cryogenic cargo warehouses according to claim 2, wherein the adhesive layer comprises at least one of high-density polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), unstretched polypropylene (CPP), and ethylene-vinyl alcohol copolymer (EVOH).

7. The composite insulation material for cryogenic cargo warehouses according to claim 1, wherein the core material comprises at least one of a microporous material, a fibrous substrate material, a porous composite material, a special composite material, and an amorphous material.

8. The composite thermal insulation material for cryogenic cargo warehouses according to claim 1, wherein the adsorbent comprises at least one of a metal oxide substrate adsorbent, a metal substrate adsorbent, a porous material, a carbon substrate adsorbent, a desiccant and a desiccant, and a gas-specific adsorbent.

9. The density of the rigid polyurethane foam is 70 kg / m³. ３ or 350 kg / m ３ And, The compressive strength is 1.0 to 8 MPa at room temperature and 2.5 to 23 MPa at cryogenic temperatures of -160°C ± 5°C. The composite insulation material for cryogenic cargo warehouses according to claim 1, wherein the thermal conductivity is 20 mW / mK to 25 mW / mK at room temperature and 10 mW / mK to 18 mW / mK at cryogenic temperatures of -160°C ± 5°C.

10. The composite insulation material for cryogenic cargo warehouses according to claim 1, wherein the compressive strength of the composite insulation material is 1.0 MPa to 8 MPa at room temperature and 2.5 MPa to 23 MPa at cryogenic temperatures of -160°C ± 5°C, and the thermal conductivity is 15 mW / mK or less at room temperature.

11. A cryogenic cargo warehouse comprising a composite thermal insulation material according to any one of claims 1 to 10.

12. The cryogenic material cargo warehouse according to claim 11, wherein the cryogenic material is at least one of liquid hydrogen, liquid nitrogen, liquid helium, and liquefied natural gas.

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