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CN114811409A - Vacuum heat-insulating material for storage and transportation of liquefied gas and processing method thereof - Google Patents

Vacuum heat-insulating material for storage and transportation of liquefied gas and processing method thereof Download PDF

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Publication number
CN114811409A
CN114811409A CN202210356170.8A CN202210356170A CN114811409A CN 114811409 A CN114811409 A CN 114811409A CN 202210356170 A CN202210356170 A CN 202210356170A CN 114811409 A CN114811409 A CN 114811409A
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China
Prior art keywords
core material
vacuum
transportation
liquefied gas
storage
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CN202210356170.8A
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Chinese (zh)
Inventor
居世宝
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Shixinyang Technology Consulting Yangzhou Jiangsu Co ltd
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Shixinyang Technology Consulting Yangzhou Jiangsu Co ltd
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Priority to CN202210356170.8A priority Critical patent/CN114811409A/en
Publication of CN114811409A publication Critical patent/CN114811409A/en
Withdrawn legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00Vessels not under pressure
    • F17C3/02Vessels not under pressure with provision for thermal insulation
    • F17C3/04Vessels not under pressure with provision for thermal insulation by insulating layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/12Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284Application of adhesive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/0004Cutting, tearing or severing, e.g. bursting; Cutter details
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    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/16Drying; Softening; Cleaning
    • B32B38/164Drying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered 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
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00Vessels not under pressure
    • F17C3/02Vessels not under pressure with provision for thermal insulation
    • F17C3/08Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • F17C3/085Cryostats
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243Coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/10Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/20Inorganic coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/20Inorganic coating
    • B32B2255/205Metallic coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/26Polymeric coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02Synthetic macromolecular fibres
    • B32B2262/0261Polyamide fibres
    • B32B2262/0269Aromatic polyamide fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/101Glass fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/106Carbon fibres, e.g. graphite fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/308Heat stability
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/724Permeability to gases, adsorption
    • B32B2307/7242Non-permeable
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/03Thermal insulations
    • F17C2203/0304Thermal insulations by solid means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/03Thermal insulations
    • F17C2203/0304Thermal insulations by solid means
    • F17C2203/0345Fibres
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/03Thermal insulations
    • F17C2203/0391Thermal insulations by vacuum

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to the technical field of VIP vacuum panels, in particular to a vacuum heat-insulating material for storage and transportation of liquefied gas and a processing method thereof, and solves the problem that an enhanced VIP vacuum panel which has a good heat-insulating effect, is not easy to break and has a strong cold and heat bridge resistance effect is lacked in the prior art. A vacuum insulation material for storage and transportation of liquefied gas and a processing method thereof comprise: the core material is of a cuboid structure. According to the invention, the L-shaped groove structure is arranged, so that the two adjacent VIP boards can be spliced, and compared with the existing flat laying mode of abutting contact, the situation that a thermal bridge effect occurs between the two adjacent VIP boards is reduced; through setting up two M shape back of the body and sealing the structure for VIP board product is more regular, and very big reduction takes place because of the condition of the cold and hot bridge that panel edge thermal insulation performance is poor and produce.

Description

Vacuum heat-insulating material for storage and transportation of liquefied gas and processing method thereof
Technical Field
The invention relates to the technical field of VIP vacuum panels, in particular to a vacuum heat-insulating material for storage and transportation of liquefied gas and a processing method thereof.
Background
Natural gas is increasingly becoming a medium strength of global energy transformation as a high-quality clean energy. The energy industry is promoted to develop high quality, and the high-efficiency utilization and industrial upgrading of clean energy including natural gas are promoted, so that the natural gas industry is developed vigorously all over the world. Hydrogen energy is regarded as the clean energy with the most development potential in the 21 st century, has the characteristics of cleanness, high efficiency, safety and sustainability, and is known as the core of the future world energy architecture.
The cryogenic insulating material is used as one of key technologies for storage and transportation safety of liquefied natural gas and liquid hydrogen, and the heat insulation performance of the cryogenic insulating material directly influences the evaporation rate of liquefied gas. The VIP plate is a novel vacuum heat-insulating material, and is made of superfine glass fiber with extremely strong heat-insulating property as a core material, the fiber diameter is 2-4 mu m, and the density is 200-280 kg/m 3 And packaging the film in a vacuum state by using a high-barrier film material after dry treatment. VIPThe heat conductivity coefficient of the vacuum insulation panel is only 0.003 w/m.k, the energy-saving effect is improved by 10-15 times compared with that of the traditional foaming material, the vacuum insulation panel is the most advanced high-efficiency heat-insulation material in the world at present, and the vacuum insulation panel is widely applied to the traditional VIP panel in cold chain markets of refrigerators, freezers, freezing boxes, refrigerated trucks, refrigerated containers of ships and the like at (-50 ℃) and cannot be normally used in an ultralow-temperature environment, and the VIP panel loses the heat-insulation performance after the barrier bag is damaged and has high vacuum degree failure.
The existing VIP plate adopts a structure of a single-layer aluminum film, the metal film has very strong gas permeation resistance, but the single-layer aluminum film increases the heat transfer property of the VIP plate, the single-layer aluminum film is easy to crack after being excessively distorted during vacuum-pumping packing, the aluminum film can generate oxidation-reduction reaction in liquid oxygen and liquid hydrogen environments, after a long time, the distortion part of the aluminum film can be corroded, heat can permeate at the crack part of a film bag, so that an obvious heat bridge edge effect is generated, and after the VIP plate is used for a long time, the heat insulation effect at the edge of the VIP vacuum plate can be reduced; when the existing VIP plate film bag is packaged, the edge sealing of the VIP plate film bag comprises four-edge sealing, three-edge sealing and back sealing, so that a thermal bridge edge effect can occur between adjacent VIP plates, and the heat insulation effect of the VIP vacuum plate is unstable;
therefore, the vacuum heat-insulating material for storage and transportation of liquefied gas and the processing method thereof are provided, so as to provide the enhanced VIP vacuum panel which has good heat-insulating effect, is not easy to break and has stronger cold and heat bridge resistance effect.
Disclosure of Invention
The invention aims to provide a vacuum heat-insulating material for storage and transportation of liquefied gas and a processing method thereof, and solves the problem that an enhanced VIP vacuum plate which has a good heat-insulating effect, is not easy to break and has a strong cold and hot bridge resistance effect is absent in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vacuum insulation material for storage and transportation of liquefied gas, comprising:
the core material is of a cuboid structure, an L-shaped groove is formed in the upper end face of one side of the core material, and an L-shaped groove is formed in the lower end face of the other side of the core material;
the multilayer film bag comprises an inorganic fiber layer, a coating type organic film layer, an evaporation type organic film layer, a vacuum aluminum plating film layer and a polyethylene layer from outside to inside in sequence, the multilayer film bag is provided with an opening end, the multilayer film bag is symmetrically provided with two M-shaped back sealing structures, and the multilayer film bag is vacuum-wrapped outside a core material;
and the gas adsorption material is embedded between the multilayer film bag and the core material.
Preferably, the multilayer film bag further comprises a left side reinforcing edge sealing belt, a right side reinforcing edge sealing belt and a sealing edge sealing belt, the opening end of the multilayer film bag is located on the upper end face or the lower end face of the core material, the sealing edge sealing belt is adhered to the opening end, the left side reinforcing edge sealing belt and the right side reinforcing edge sealing belt are respectively adhered to the outside of the multilayer film bag correspondingly and are located at the positions of the horizontal end faces of the L-shaped grooves, and the two ends of the sealing edge sealing belt are respectively terminated at the left side reinforcing edge sealing belt and the right side reinforcing edge sealing belt.
Preferably, the two symmetrical M-shaped back seals are respectively directed towards the front side and the back side of the core material.
Preferably, the core material comprises any one or more of a fibrous core material comprising one or more of microglass fibers, glass microfibers, glass wool, aluminum silicate fibers, or inorganic mineral wool, or a powdered core material comprising one or more of inorganic mineral powder or fumed silica.
Preferably, the inorganic fiber layer of the multilayer film bag comprises one or more of basalt fibers, carbon fibers, E glass fibers, aramid fibers, S glass fibers or mineral fibers.
Preferably, the coating type organic film layer is one or more of PVDC, PVA or EVOH.
Preferably, the evaporation type organic film layer is evaporation Al 2 O 3 Organic film or evaporated SiO 2 And (3) an organic film.
A processing method of a vacuum heat-insulating material for storage and transportation of liquefied gas specifically comprises the following steps:
(1) processing two ends of the core material into L-shaped structures, and then putting the core material into an oven for baking treatment, wherein the temperature of the oven is 240-280 ℃, and the drying time is 20-30 min;
(2) under the condition that the ambient temperature is 20-30 ℃ and the humidity is less than or equal to 40 percent RH, a rubber roller rubber coating mode is adopted, and the rubber coating amount is 20-30 g/m 2 Constructing a multilayer film bag;
using a low-temperature adhesive to carry out dry compounding and high-temperature high-frequency heat sealing on the high-barrier film, the metal foil film and the nano polymer film so as to form a multilayer high-barrier film;
(2.1) carrying out dry-type composite vacuum aluminum plating film layers on the outer sides of the polyethylene heat-sealing layers by using a low-temperature adhesive, and then carrying out high-temperature high-frequency heat-sealing treatment on the polyethylene heat-sealing layers by using a heating roller to form a primary product;
(2.2) carrying out dry composite evaporation type organic film layer on the outer side of the primary product through a low-temperature adhesive, and then carrying out high-temperature high-frequency heat sealing treatment on the primary product through a heating roller to form an air-barrier film layer;
(2.3) carrying out dry composite coating type organic film layers on the outer sides of the gas barrier film layers through low-temperature adhesives, and then carrying out high-temperature high-frequency heat sealing treatment on the organic film layers through a heating roller to form a multilayer high-barrier film material;
(2.4) coating a low-temperature binder on the outer side of the multilayer high-barrier film material by using a rubber roll, and compounding the multilayer high-barrier film material and the inorganic fiber layer together by adopting a heating extrusion mode in an electric heating or hot air drying mode to form a multilayer film bag;
(3) customizing and cutting the multilayer film bag according to the length, the width and the thickness of the core material, and finishing the manufacture of an M-shaped back sealing structure, wherein an opening is reserved in the multilayer film bag;
(4) the core material is plugged from the opening of the multilayer film bag, a getter or a desiccant bag is placed on the surface of the core material, then the opening of the multilayer film bag is vacuumized, a sealing edge sealing belt is glued at the opening, a reinforcing edge sealing belt is glued at the horizontal end of the L-shaped groove, and the VIP vacuum plate is formed after packaging is completed; wherein the vacuum degree is less than or equal to 1Pa, the heat sealing temperature is 110-170 ℃, the packaging time is 3-9 seconds, and the packaging width is 10 mm;
(5) keeping the VIP vacuum plate and standing for more than three days;
(6) carrying out product quality detection on the VIP vacuum plate, and packaging and boxing the VIP vacuum plate after the VIP vacuum plate is qualified
Preferably, the low-temperature adhesive is a two-component polyurethane adhesive or an ultralow-temperature epoxy adhesive.
Preferably, the getter is a barium-lithium composite getter.
The invention has the following beneficial effects:
1. by arranging the L-shaped groove structure, the two adjacent VIP boards can be spliced, and compared with the existing flat laying mode of abutting contact, the situation that a thermal bridge effect occurs between the two adjacent VIP boards is reduced; by arranging the two M-shaped back sealing structures, the VIP plate product is more regular, and the occurrence of cold and hot bridges caused by poor heat insulation performance of the edge of the plate is greatly reduced; through setting up left side enhancement banding area and right side enhancement banding area, improved the membrane bag after the evacuation, be in the reliability between the core in L shape groove position.
2. The tensile property of the film bag can be enhanced through the arrangement of the inorganic fiber layer; the coating organic film is a composite organic film formed by roll coating PVDC, PVA or EVOH, and the vapor deposition organic film is formed by vapor depositing Al on the surface of the organic film by a vacuum vapor deposition method 2 O 3 Or evaporating SiO 2 By evaporation of Al 2 O 3 Or evaporating SiO 2 The oxidation of the surface of the film can be utilized, the anti-blocking capability of the film is improved, the thickness of the metal film layer can be reduced by a vacuum evaporation method, the occurrence of the condition that the film is cracked due to the fact that the metal film is thick can be reduced by combining the flexibility of the organic film, and therefore the enhanced high-blocking multi-layer film bag which is formed by compounding five layers of films and is not easy to break is formed.
3. The reinforced VIP plate has better low temperature resistance and cold and hot impact resistance through the use of the low-temperature adhesive.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Figure 1 is a schematic cross-sectional view of a VIP vacuum panel;
figure 2 is a schematic top view of a VIP panel;
FIG. 3 is a side view of a VIP panel;
FIG. 4 is a schematic view of a core material structure;
FIG. 5 is a partial cross-sectional view of a core material and a multilayer film bag package;
fig. 6 is a schematic view of a multilayer film pouch construction.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 1 to 6, a vacuum insulation material for storage and transportation of liquefied gas, comprising:
the core material is of a cuboid structure, an L-shaped groove is formed in the upper end face of one side of the core material, and an L-shaped groove is formed in the lower end face of the other side of the core material;
the multilayer film bag comprises an inorganic fiber layer, a coating type organic film layer, an evaporation type organic film layer, a vacuum aluminum plating film layer and a polyethylene layer from outside to inside in sequence, the multilayer film bag is provided with an opening end, the multilayer film bag is symmetrically provided with two M-shaped back sealing structures, and the multilayer film bag is vacuum-wrapped outside a core material;
the gas adsorption material is embedded between the multilayer film bag and the core material;
the multi-layer film bag is characterized by further comprising a left-side reinforcing edge sealing strip, a right-side reinforcing edge sealing strip and a sealing edge sealing strip, wherein the opening end of the multi-layer film bag is positioned on the upper end face or the lower end face of the core material, the sealing edge sealing strip is adhered to the opening end, the left-side reinforcing edge sealing strip and the right-side reinforcing edge sealing strip are respectively and correspondingly adhered to the outside of the multi-layer film bag and are positioned at the opposite horizontal end faces of the L-shaped grooves, and two ends of the sealing edge sealing strip are respectively terminated at the left-side reinforcing edge sealing strip and the right-side reinforcing edge sealing strip;
according to the technical scheme, the two symmetrical M-shaped back seals are respectively right opposite to the front side and the rear side of the core material;
according to the technical scheme, the core material comprises any one or more of a fiber core material or a powder core material, the fiber core material comprises one or more of superfine glass fiber, glass microfiber, glass wool, aluminum silicate fiber or inorganic mineral wool, and the powder core material comprises one or more of inorganic mineral powder or fumed silica;
according to the technical scheme, the inorganic fiber layer of the multilayer film bag comprises one or more of basalt fiber, carbon fiber, E glass fiber, aramid fiber, S glass fiber or mineral fiber;
according to the technical scheme, the coating type organic film layer is one or more of PVDC, PVA and EVOH;
according to the technical scheme, the evaporation type organic film layer is evaporation Al 2 O 3 Organic film or evaporated SiO 2 An organic film;
in this embodiment: by arranging the L-shaped groove structure, the two adjacent VIP boards can be spliced, and compared with the existing flat laying mode of abutting contact, the situation that a thermal bridge effect occurs between the two adjacent VIP boards is reduced; by arranging the two M-shaped back sealing structures, the VIP plate product is more regular, and the occurrence of cold and hot bridges caused by poor heat insulation performance of the edge of the plate is greatly reduced; the reliability of the membrane bag between the core materials at the position of the L-shaped groove after the membrane bag is vacuumized is improved by arranging the left side reinforcing edge sealing belt and the right side reinforcing edge sealing belt;
the tensile property of the film bag can be enhanced through the arrangement of the inorganic fiber layer; the coating organic film is a composite organic film formed by roll coating PVDC, PVA or EVOH, and the vapor deposition organic film is formed by vapor depositing Al on the surface of the organic film by a vacuum vapor deposition method 2 O 3 Or evaporating SiO 2 By evaporation of Al 2 O 3 Or evaporating SiO 2 Can make use of the oxidation of the membrane surfaceThe anti-blocking capability of the film is high, the thickness of the metal film layer can be reduced through a vacuum evaporation method, and the occurrence of the condition that the film cracks due to the fact that the metal film is thick can be reduced by combining the flexibility of the organic film, so that the reinforced high-blocking and anti-cracking multilayer film bag formed by compounding five layers of films is formed.
Example two
Referring to fig. 1 to 6, a method for processing a vacuum insulation material for storage and transportation of liquefied gas specifically comprises the following steps:
(1) processing two ends of the core material into an L-shaped structure, and then putting the core material into an oven for baking treatment, wherein the temperature of the oven is 240-280 ℃, and the baking time is 20-30 min;
(2) under the condition that the ambient temperature is 20-30 ℃ and the humidity is less than or equal to 40 percent RH, a rubber roller rubber coating mode is adopted, and the rubber coating amount is 20-30 g/m 2 Constructing a multilayer film bag;
using a low-temperature adhesive to carry out dry compounding and high-temperature high-frequency heat sealing on the high-barrier film, the metal foil film and the nano polymer film so as to form a multilayer high-barrier film;
(2.1) carrying out dry-type composite vacuum aluminum plating film layers on the outer sides of the polyethylene heat-sealing layers by using a low-temperature adhesive, and then carrying out high-temperature high-frequency heat-sealing treatment on the polyethylene heat-sealing layers by using a heating roller to form a primary product;
(2.2) carrying out dry composite evaporation type organic film layer on the outer side of the primary product through a low-temperature adhesive, and then carrying out high-temperature high-frequency heat sealing treatment on the primary product through a heating roller to form an air-barrier film layer;
(2.3) carrying out dry composite coating type organic film layers on the outer sides of the gas barrier film layers through low-temperature adhesives, and then carrying out high-temperature high-frequency heat sealing treatment on the organic film layers through a heating roller to form a multilayer high-barrier film material;
(2.4) coating a low-temperature binder on the outer side of the multilayer high-barrier film material by using a rubber roll, and compounding the multilayer high-barrier film material and the inorganic fiber layer together by adopting a heating extrusion mode in an electric heating or hot air drying mode to form a multilayer film bag;
(3) customizing and cutting the multilayer film bag according to the length, the width and the thickness of the core material, and finishing the manufacture of an M-shaped back sealing structure, wherein an opening is reserved in the multilayer film bag;
(4) the core material is plugged from the opening of the multilayer film bag, a getter or a desiccant bag is placed on the surface of the core material, then the opening of the multilayer film bag is vacuumized, a sealing edge sealing belt is glued at the opening, a reinforcing edge sealing belt is glued at the horizontal end of the L-shaped groove, and the VIP vacuum plate is formed after packaging is completed; wherein the vacuum degree is less than or equal to 1Pa, the heat sealing temperature is 110-170 ℃, the packaging time is 3-9 seconds, and the packaging width is 10 mm;
(5) keeping the VIP vacuum plate and standing for more than three days;
(6) carrying out product quality detection on the VIP vacuum plate, and packaging and boxing the VIP vacuum plate after the VIP vacuum plate is qualified;
according to the technical scheme, the low-temperature adhesive adopts a two-component polyurethane adhesive or an ultralow-temperature epoxy adhesive;
according to the technical scheme, the getter is a barium-lithium composite getter;
in this embodiment: the ultralow-temperature-resistant adhesive has the opening time of 50-150 min, the adhesive strength of 15-20 Mpa after complete curing, the low-temperature resistance (-100 ℃ and-170 ℃), the adhesive strength of more than 30Mpa, certain adhesive strength when used under the condition of soaking in liquid hydrogen at-269 ℃ (the adhesive strength exceeds 18MPa), and the reinforced VIP plate can have good low-temperature resistance and cold and heat shock resistance through the use of the low-temperature adhesive.
Experimental example:
subject: the multilayer high-barrier film material prepared by the embodiment of the invention and the existing single-layer metal aluminum film material;
purpose of the experiment: testing the oxygen barrier property and the water-vapor barrier property;
the experimental method comprises the following steps: respectively bending the multilayer high-barrier film and the single-layer metal aluminum film for 0-100 times, and then performing barrier test to analyze the degradation degree of the barrier property;
table of experimental results:
Figure BDA0003583017610000101
TABLE 1
Figure BDA0003583017610000111
TABLE 2
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A vacuum insulation material for storage and transportation of liquefied gas, comprising:
the core material is of a cuboid structure, an L-shaped groove is formed in the upper end face of one side of the core material, and an L-shaped groove is formed in the lower end face of the other side of the core material;
the multilayer film bag comprises an inorganic fiber layer, a coating type organic film layer, an evaporation type organic film layer, a vacuum aluminum plating film layer and a polyethylene layer from outside to inside in sequence, the multilayer film bag is provided with an opening end, the multilayer film bag is symmetrically provided with two M-shaped back sealing structures, and the multilayer film bag is arranged outside a core material in a vacuum wrapping mode;
and the gas adsorption material is embedded between the multilayer film bag and the core material.
2. The vacuum insulation material for storage and transportation of liquefied gas as claimed in claim 1, further comprising a left side reinforcing edge sealing tape, a right side reinforcing edge sealing tape and a sealing edge sealing tape, wherein the open end of the multi-layer film bag is located at the upper end face or the lower end face of the core material, the sealing edge sealing tape is adhered to the open end, the left side reinforcing edge sealing tape and the right side reinforcing edge sealing tape are respectively adhered to the outside of the multi-layer film bag correspondingly and at the position of the horizontal end face of the L-shaped groove facing each other, and both ends of the sealing edge sealing tape are respectively terminated at the left side reinforcing edge sealing tape and the right side reinforcing edge sealing tape.
3. The vacuum insulation material for storage and transportation of liquefied gas as claimed in claim 1, wherein the two symmetrical M-shaped back seals are respectively opposite to the front side and the rear side of the core material.
4. The vacuum insulation material for storage and transportation of liquefied gas as claimed in claim 1, wherein the core material comprises any one or more of a fibrous core material comprising one or more of ultra-fine glass fiber, glass microfiber, glass wool, alumina silicate fiber or inorganic mineral wool, or a powdery core material comprising one or more of inorganic mineral powder or fumed silica.
5. The vacuum insulation material for storage and transportation of liquefied gas according to claim 1, wherein the inorganic fiber layer of the multi-layer film bag comprises one or more of basalt fiber, carbon fiber, E glass fiber, aramid fiber, S glass fiber, or mineral fiber.
6. The vacuum insulation material for storage and transportation of liquefied gas according to claim 1, wherein the coating type organic film layer is one or more of PVDC, PVA or EVOH.
7. The vacuum insulation material for storage and transportation of liquefied gas as claimed in claim 1, wherein the evaporated organic film layer is evaporated Al 2 O 3 Organic film or evaporated SiO 2 And (3) an organic film.
8. A method for processing a vacuum insulation material for storage and transportation of liquefied gas, comprising the vacuum insulation material for storage and transportation of liquefied gas according to any one of claims 1 to 7, characterized by comprising the steps of:
(1) processing two ends of the core material into L-shaped structures, and then putting the core material into an oven for baking treatment, wherein the temperature of the oven is 240-280 ℃, and the drying time is 20-30 min;
(2) under the condition that the ambient temperature is 20-30 ℃ and the humidity is less than or equal to 40 percent RH, a rubber roller rubber coating mode is adopted, and the rubber coating amount is 20-30 g/m 2 Constructing a multilayer film bag;
using a low-temperature adhesive to carry out dry compounding and high-temperature high-frequency heat sealing on the high-barrier film, the metal foil film and the nano polymer film so as to form a multilayer high-barrier film;
(2.1) carrying out dry-type composite vacuum aluminum plating film layers on the outer sides of the polyethylene heat-sealing layers by using a low-temperature adhesive, and then carrying out high-temperature high-frequency heat-sealing treatment on the polyethylene heat-sealing layers by using a heating roller to form a primary product;
(2.2) carrying out dry composite evaporation type organic film layer on the outer side of the primary product through a low-temperature adhesive, and then carrying out high-temperature high-frequency heat sealing treatment on the primary product through a heating roller to form an air-barrier film layer;
(2.3) carrying out dry composite coating type organic film layers on the outer sides of the gas barrier film layers through low-temperature adhesives, and then carrying out high-temperature high-frequency heat sealing treatment on the organic film layers through a heating roller to form a multilayer high-barrier film material;
(2.4) coating a low-temperature binder on the outer side of the multilayer high-barrier film material by using a rubber roll, and compounding the multilayer high-barrier film material and the inorganic fiber layer together by adopting a heating extrusion mode in an electric heating or hot air drying mode to form a multilayer film bag;
(3) customizing and cutting the multilayer film bag according to the length, the width and the thickness of the core material, and finishing the manufacture of an M-shaped back sealing structure, wherein an opening is reserved in the multilayer film bag;
(4) the core material is plugged from the opening of the multilayer film bag, a getter or a desiccant bag is placed on the surface of the core material, then the opening of the multilayer film bag is vacuumized, a sealing edge sealing belt is glued at the opening, a reinforcing edge sealing belt is glued at the horizontal end of the L-shaped groove, and the VIP vacuum plate is formed after packaging is completed; wherein the vacuum degree is less than or equal to 1Pa, the heat sealing temperature is 110-170 ℃, the packaging time is 3-9 seconds, and the packaging width is 10 mm;
(5) keeping the VIP vacuum plate and standing for more than three days;
(6) and (4) carrying out product quality detection on the VIP vacuum plate, and packaging and boxing the VIP vacuum plate after the VIP vacuum plate is qualified.
9. The method for processing a vacuum insulation material for liquefied gas storage and transportation according to claim 8, wherein the low-temperature adhesive is a two-component polyurethane adhesive or an ultra-low temperature epoxy adhesive.
10. The method for processing the vacuum insulation material for storage and transportation of liquefied gas according to claim 8, wherein the getter is a barium-lithium composite getter.
CN202210356170.8A 2022-04-06 2022-04-06 Vacuum heat-insulating material for storage and transportation of liquefied gas and processing method thereof Withdrawn CN114811409A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118517630A (en) * 2024-07-23 2024-08-20 沪东中华造船(集团)有限公司 Marine metal film liquid hydrogen storage tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118517630A (en) * 2024-07-23 2024-08-20 沪东中华造船(集团)有限公司 Marine metal film liquid hydrogen storage tank

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