CN107387944A - A kind of environment-friendly type vacuum insulation panel - Google Patents

A kind of environment-friendly type vacuum insulation panel Download PDF

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Publication number
CN107387944A
CN107387944A CN201710505291.3A CN201710505291A CN107387944A CN 107387944 A CN107387944 A CN 107387944A CN 201710505291 A CN201710505291 A CN 201710505291A CN 107387944 A CN107387944 A CN 107387944A
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CN
China
Prior art keywords
insulation panel
vacuum insulation
diatomite
glass fibre
reflection
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CN201710505291.3A
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Chinese (zh)
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CN107387944B (en
Inventor
高彦峰
卢健
危韦
赵起
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高彦峰
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/02Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/029Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
    • 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
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • 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
    • B32B9/00Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • 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
    • B32B2250/00Layers arrangement
    • B32B2250/40Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • 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
    • B32B2262/00Composition 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
    • B32B2270/00Resin or rubber layer containing a blend of at least two different polymers
    • 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
    • B32B2307/304Insulating

Abstract

The present invention relates to a kind of environment-friendly type vacuum insulation panel, including the insulated core material positioned at inner side, the reflection-type choke barrier film positioned at outside, and the protective layer between insulated core material and reflection-type choke barrier film;The glass fibre of the insulated core material including 40~95wt%, 2~40wt% diatomite, 2~40wt% attapulgites and 1~5wt% binding agent.The present invention can avoid the problem of packaging bag is destroyed to cause vacuum to decline using diatomite, attapulgite and glass fibre compound core plate, moreover it is possible to simplification of flowsheet, reduce the production cost of core.

Description

A kind of environment-friendly type vacuum insulation panel
Technical field
The present invention relates to a kind of environment-friendly type vacuum insulation panel and preparation method thereof, belong to heat-barrier material field.
Background technology
Vacuum insulation panel (Vacuum thermal insulation, abbreviation VIP) is one kind in vacuum thermal insulating material, It is to be combined by filling core and vacuum protection top layer, because of the polyurethane material of its heat-insulating property much beyond traditions, extensively It is general to be applied to Aero-Space, the industry such as household electrical appliances and building.Because one side vacuum insulation panel can be effectively prevented from pair of air Heat transfer caused by stream, on the other hand the extremely low core of its thermal conductivity for using largely prevent the progress of heat transfer, Therefore the thermal conductivity factor of VIP plates can be greatly lowered, less than 0.035w/ (mk).
The core material of vacuum heat insulation plate sold on the market uses porous media material mostly at present, as glass fibre, aeroge, The materials such as powdered silica, any core respectively have its advantage and disadvantage.Secondly, in heat-insulation core plate manufacturing process, it is necessary to A certain amount of drier or getter are added, to remove the gas and moisture that are not yet eliminated in Obstruct membrane and core plate, keeps phase To higher vacuum, so as to improve the service life of vacuum heat-insulating plate.
For vacuum insulation panel core material, it is necessary to possess following four characteristic:Core is under high vacuum negative pressure state, There is supporting construction to prevent vacuum heat-insulating plate from shrinking, caving in.Secondly, its structure design must be reduced as far as hot biography Lead.Then, core plate must possess sufficient amount of open-celled structure, gas is discharged under negative pressure state with most fast speed. Finally, material must sufficiently stable property, under vacuum or ultralow vacuum degree condition, do not discharge gas or discharge gas less as far as possible.
For improving thermal insulation board heat-insulating property, three kinds of modes of heat transfer must all account for, wherein working as environment With incubator internal difference in temperature more than 30 DEG C, the influence of radiant heat transfer can not just be ignored temperature.Guarantor has been used especially for this For the incubator of warm core, the ratio occupied by it is even more than more than the 35% of overall heat transfer.However, existing patent, This point is little affected by attention for the design of warming plate.CN105058541A discloses a kind of cork powder Quito hole composite wood Material and its preparation method and application, belongs to heat-barrier material field, using wanting raw material based on cork powder and aerosil, including Following steps choose certain granules cork powder not of uniform size, cork powder is carried out by microwave method for preprocessing reconstruction with Aerosil carries out being mixed to get composite granule, and application one minute certain time of one ton of pressure can obtain cork powder Quito Hole composite material, but it is aerosil that its shortcoming, which is core used, because the material 99% is made up of gas, Collapsed as usage time extension occurs, volume significantly reduces, and heat-insulating property is deteriorated.CN105757400A discloses a kind of glass The vacuum insulation panel of glass fiber base, its core are mainly (to use the chopped silk piece of wet moulding in the silk core that is chopped from a kind of The lamination of material) or a kind of glass mat of dry method Chopped Strand Mat core or at the same time the chopped thread sheet material containing wet moulding with The both sides up and down of the core of dry method Chopped Strand Mat set superfine glass fiber cotton piece, but its shortcoming, which is superfine glass fiber cotton piece, still suffers from one A little glass fibres puncture vacuum bag the possibility for causing vacuum to reduce.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of environment-friendly type vacuum insulation panel, including insulated core material positioned at inner side, Reflection-type choke barrier film positioned at outside, and the protective layer between insulated core material and reflection-type choke barrier film;
The glass fibre of the insulated core material including 40~95wt%, 2~40wt% diatomite, 2~40wt% attapulgites, with And 1~5wt% binding agent.
Glass fibre, 2~40wt% diatomite, 2~40wt% attapulgite conduct of the present invention from 40~95wt% The material of insulated core material, on the one hand from main material of the low glass fibre of thermal conductivity as insulated core material, it can be greatly improved Heat insulation effect, another aspect addition trade waste diatomite, concave convex rod can increase the plasticity of core, facilitate the compacting of core Shaping, and glass fibre can be effectively prevent and puncture the problem of packaging bag causes vacuum to decline, while realize discarded object again Utilize, reduce production cost.In addition, during the powder combined fiberglass cotton such as diatomite and attapulgite, glass fibre cotton table The hole in face, the order of magnitude of pore size is suitable with the mean free path of air molecule, therefore can greatly reduce in material Heat transfer.
It is preferred that the insulated core material includes fiberglass insulation being made and positioned at described by the glass fibre The mixed layer made of diatomite and attapulgite of fiberglass insulation upper and lower surface.It is that is, of the invention by diatom Soil and attapulgite are compressed on the both sides of fiberglass insulation, more effectively glass fibre can be prevented to puncture packaging bag Problem.
It is preferred that the thickness of the fiberglass insulation is 5~30mm, the thickness of the mixed layer is 2~20mm.
It is preferred that the mass ratio of diatomite and attapulgite is (1~20) in the mixed layer:(1~20).
It is preferred that the average diameter of glass fibre is 10 μm in the fiberglass insulation, draw ratio is more than 500:1.
Also, it is preferred that the size of the diatomite and attapulgite in 300 mesh between 800 mesh sieves.Present invention selection Grain is used as protective layer for the diatomite and concave convex rod of the particle diameter of 300~800 mesh, and the beneficial effect that film bag is punctured is avoided with realization Fruit.
It is preferred that the reflection-type gas-barrier separated membrane material is that two kinds of Material claddings of PE and CPP form and surface is coated with metal Film, the reflection-type choke barrier film integral thickness are 0.01~1mm.The present invention uses this flexibility of high reflection type metal coating Barrier film replaces the mode of traditional aluminium sheet, effectively prevents radiation of heat and conduction, caused by significantly limit radiant heat transfer The phenomenon that heat-insulating property declines, or even can be made into flexibly thermal insulation material.And choke barrier film only lateral surface has crossed metal film, by It is PE and CPP in the inner side of the choke barrier film of upper and lower both sides, thermal conductance is extremely low, is not in be caused using aluminium sheet caused by heat bridge Bad phenomenon.
It is preferred that the metallic film is one kind in silver, aluminium, nickel and the copper and its alloy, thickness for 50~ 500nm。
It is preferred that the protective layer is more than 80% for the porosity of fiber filter bag, aperture is 0.1~50 μm, by means of This, be able to will not be extracted ensureing glass fibre, and without prejudice to the vacuumize process of vacuum insulation panel preparation process so that institute The overall vacuum degree stated in reflection-type choke barrier film is less than 0.3MPa.
Brief description of the drawings
Fig. 1 is the structural representation of environment-friendly type vacuum insulation panel;
Fig. 2 is the guarantor formed in six folder surface layers for insert the environment-friendly type vacuum insulation panel of the present invention double-deck polypropylene plastic box The structural representation of incubator;
Fig. 3 be embodiment 1,2, comparative example 1 prepare double incubators cold insulation test temperature profile;
Fig. 4 be embodiment 1,2, comparative example 1 prepare double incubators heat insulation test temperature profile.
Embodiment
The present invention is further illustrated below by way of following embodiments, it should be appreciated that following embodiments are merely to illustrate this Invention, is not intended to limit the present invention.
In the present invention, environment-friendly type vacuum insulation panel (vacuum insulation panel) is made up of insulated core material and reflection-type choke barrier film. The insulated core material is the block being made up of glass fibre, diatomite, attapulgite.Described vacuum insulation panel also includes preventing The protective layer that core powder is extracted.
Above-mentioned heat insulation block (insulated core material) can be by a variety of insulation materials (glass fibre and diatomite, concave convex rod lapicide Industry discarded object) formed with certain proportion compacting.Counted using the gross mass of insulated core material as 100%, the quality hundred of the glass fibre It is 40%~95wt%, preferably 55~80wt% to divide content;The respective percentage composition of diatomite and attapulgite be 2~ 40wt%, preferably 10~20wt%.Glass fibre and diatomite, attapulgite are suppressed after can mixing, it is preferable that scheme is Diatomite, attapulgite are mainly distributed both sides above and below glass fibre (more preferably surrounding), then suppressed.Insulated core material Integral thickness can be 5~30mm, the thickness of heat-insulation layer that wherein glass fibre is formed can be 3~20mm, by diatomite and recessed The thickness of the mixed layer of convex rod stone composition can be 2~20mm.In mixed layer, the mass ratio of diatomite and attapulgite can be (1~ 20):(1~20).The insulated core material also includes accounting for below gross mass 5wt%, preferred 1~5wt% binding agent, for by glass Glass fiber, diatomite, attapulgite are bonded together to form block structure.In the present invention, the diatomite and attapulgite Size can be selected in 300 mesh between 800 mesh sieves.The glass fiber average diameter is about 10 μm, and draw ratio is more than 500:1. Epoxy resin can be selected in binding agent.
Protective layer can be bag like construction, such as fiber filter bag, and this is a kind of non-woven fabrics, and bag is thick to be less than 100 μm, and material is Fiber Materials, its porosity are more than 80%, and aperture is about 0.1~50 μm.The filter bag is close to insulated core material, and is wrapped up Wherein.
Also have outside protective layer one layer of holding vacuum with reflex choke barrier film (its be preferably formed as it is packed, i.e., Reflection-type choke diaphragm bag), the surface of the choke diaphragm bag is coated with metallic film (for example, silver, aluminium, nickel, copper or its alloy Deng), to improve heat radiation reflection efficiency, reflection-type choke barrier film integral thickness can be 0.01~1mm, the metal being coated with thereon The thickness of film can be 50~500nm.Its heat radiation reflection efficiency is more than 90%.Vacuum in the reflection-type choke diaphragm bag Degree is less than 0.3MPa.The thermal conductivity factor of whole vacuum insulation panel is less than 0.02W/ (mk).The reflection-type choke diaphragm bag material Matter can be that two kinds of Material claddings of PE and CPP form.
Referring to Fig. 1, it shows an exemplary construction schematic diagram of environment-friendly type vacuum insulation panel of the present invention, wrapped from outside to inside Include, silver-plated reflection Obstruct membrane 1, fiber filter film 2, heat insulation core material 3,4 form, wherein 3 be mainly diatomite and attapulgite Mixed layer, 4 mainly fiberglass insulation.
As the example of the preparation method of an environment-friendly type vacuum insulation panel, including:By glass fibre, diatomite and bumps Rod stone weighs by a certain percentage, first takes glass fibre as center material, by diatomite and attapulgite to wrap up glass fibre Mode laid, by binding agent by glass fibre, diatomite and attapulgite bond, compacting (pressing pressure can be 20 ~80MPa) bulk material is formed, as insulated core material (core);Core is loaded into porosity and is more than 80%, aperture is about 0.1 In~50 μm of fiber filter bag, sealing;By the fiber filter equipped with core it is packed enter the reflection choke diaphragm bag aluminized of surface In, vacuumize and encapsulate to obtain vacuum insulation panel.Now the overall vacuum degree of vacuum heat-insulation intralamellar part is less than 0.3MPa.
The present invention can avoid packaging bag is destroyed from causing vacuum using diatomite, attapulgite and glass fibre compound core plate The problem of degree declines, moreover it is possible to simplification of flowsheet, reduce the production cost of core.The present invention uses high reflection type metal coating generation For the mode of traditional aluminium sheet, radiant heat transfer is effectively prevented, it might even be possible to make flexibly thermal insulation material.
Embodiment is enumerated further below to describe the present invention in detail.It will similarly be understood that following examples are served only for this Invention is further described, it is impossible to is interpreted as limiting the scope of the invention, those skilled in the art is according to this hair Some nonessential modifications and adaptations that bright the above is made belong to protection scope of the present invention.Following examples are specific Technological parameter etc. is also only an example in OK range, i.e. those skilled in the art can be done properly by this paper explanation In the range of select, and do not really want to be defined in the concrete numerical value of hereafter example.In following embodiments, if without specified otherwise, it is described The average diameter of glass fibre is 10 μm in fiberglass insulation, and draw ratio is more than 500, the diatomite and attapulgite Size is in 300 mesh between 800 mesh sieves.
Embodiment 1
A kind of environment-friendly type vacuum insulation panel and preparation method thereof:
First 58wt% glass fibre is mixed with 20wt% diatomite, 20wt% attapulgite, ensures diatomite and recessed Convex rod stone is laid on the outside of glass fibre;
Added into above-mentioned raw materials and account for gross mass 2wt% binding agent (epoxy resin) and be bonded together raw material;
The raw material being bonded together is pressed under the conditions of 50MPa the block that thickness is 30mm, wherein fiberglass insulation Thickness is 20mm, and the thickness for being distributed in the diatomite of the fiberglass insulation both sides and the mixed layer of attapulgite is 10mm;
The block suppressed is put into fiber filter bag (porosity is more than 80%, and aperture is 0.1~50 μm), then block is put into (aluminium film has been crossed on the reflection choke diaphragm bag surface to reflection-type choke diaphragm bag, reflects the thickness 0.25mm of choke diaphragm bag, metal Film thickness is 120nm) in;
Vacuumize, its vacuum is obtained vacuum insulation panel in below 0.3MPa, encapsulation.
By six of the vacuum insulation panel prepared insertion 35.4cm*26.0cm*28.8cm double-deck polypropylene plastic box Incubator is formed in the interlayer of face (referring to Fig. 2) (size see the table below):
6kg refrigerant is put into (loading about 1/3) incubator, ensures container sealing, ambient temperature 23 Degree Celsius, test refrigerant, heat source surface temperature change over time (respectively referring to example 1 in Fig. 3,4 shown in curve).
Embodiment 2
A kind of environment-friendly type vacuum insulation panel and preparation method thereof:
First 78wt% glass fibre is mixed with 10wt% diatomite, 10wt% attapulgite, ensures diatomite and recessed Convex rod stone is laid on the outside of glass fibre;
Added into above-mentioned raw materials and account for gross mass 2wt% binding agent (epoxy resin) and be bonded together raw material;
The raw material being bonded together is pressed under the conditions of 50MPa the block that thickness is 30mm, wherein fiberglass insulation Thickness is 20mm, and the thickness for being distributed in the diatomite of the fiberglass insulation both sides and the mixed layer of attapulgite is 10mm;
The block suppressed is put into fiber filter bag (porosity is more than 80%, and aperture is 0.1~50 μm), then block is put into (reflection choke diaphragm bag surface Dou Du has aluminium film to reflection-type choke diaphragm bag, reflects the thickness 0.25mm of choke diaphragm bag, gold Category film thickness is 120nm) in;
Vacuumize, its vacuum is obtained vacuum insulation panel in below 0.3MPa, encapsulation.
By six of the vacuum insulation panel prepared insertion 35.4cm*26.0cm*28.8cm double-deck polypropylene plastic box Incubator is formed in the interlayer of face (referring to Fig. 2) (size see the table below):
6kg refrigerant is put into (loading about 1/3) incubator, ensures container sealing, ambient temperature 23 Degree Celsius, test refrigerant, heat source surface temperature change over time (respectively referring to example 2 in Fig. 3,4 shown in curve).
Comparative example 1
A kind of environment-friendly type vacuum insulation panel and preparation method thereof:
Glass fibre is taken, raw material is bonded together by the binding agent (epoxy resin) for adding 2wt%;
The raw material being bonded together is pressed into the block that thickness is 30mm under the conditions of 50MPa;
The block suppressed is put into fiber filter bag (porosity is more than 80%, and aperture is 0.1~50 μm), then block is put into (reflection choke diaphragm bag surface Dou Du has aluminium film to reflection-type choke diaphragm bag, reflects the thickness 0.25mm of choke diaphragm bag, gold Category film thickness is 120nm) in;
Vacuumize, its vacuum is obtained vacuum insulation panel in below 0.3MPa, encapsulation.
By six of the vacuum insulation panel prepared insertion 35.4cm*26.0cm*28.8cm double-deck polypropylene plastic box Incubator is formed in the interlayer of face (referring to Fig. 2) (size see the table below):
6kg refrigerant is put into (loading about 1/3) incubator, ensures container sealing, ambient temperature 23 Degree Celsius, test refrigerant, heat source surface temperature change over time (respectively referring to example 3 in Fig. 3,4 shown in curve).
Referring to Fig. 3,4, it shows embodiment 1 (embodiment 1), embodiment 2 (embodiment 2), comparative example (embodiment 3) the heat insulation test effect of the incubator prepared:The low-temperature insulation effect of embodiment 2 is best as can be known from Fig. 3, and embodiment 1 is low Warm heat insulation effect takes second place, and the low-temperature insulation effect of embodiment 3 is worst.The soak effect of embodiment 2 is most as can be known from Fig. 4 Good, the soak effect of embodiment 1 is taken second place, and the soak effect of embodiment 3 is worst.Suitable diatomite, attapulgite Content also have certain influence to the heat insulation effect of core.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar can understand present disclosure and be carried out, and it is not intended to limit the scope of the present invention, all according to the present invention The equivalent change or modification that Spirit Essence is made, it should all cover within the scope of the present invention.

Claims (10)

1. a kind of vacuum insulation panel, it is characterised in that including the insulated core material positioned at inner side, the reflection-type gas-barrier separated positioned at outside Film, and the protective layer between insulated core material and reflection-type choke barrier film;
The insulated core material includes 40~95wt% glass fibre, 2~40wt% diatomite, 2~40wt% attapulgites and 1 ~5wt% binding agent.
2. vacuum insulation panel according to claim 1, it is characterised in that the insulated core material is included by the glass fibre Manufactured fiberglass insulation and made of stones by diatomite and concave convex rod positioned at the fiberglass insulation upper and lower surface Into mixed layer.
3. vacuum insulation panel according to claim 2, it is characterised in that the thickness of the fiberglass insulation be 5~ 30mm, the thickness of the mixed layer is 2~20mm.
4. the vacuum insulation panel according to Claims 2 or 3, it is characterised in that diatomite and concave convex rod in the mixed layer The mass ratio of stone is(1~20):(1~20).
5. according to the vacuum insulation panel any one of claim 1-4, it is characterised in that the insulated core material include 40~ 95wt% glass fibre, 2~40wt% diatomite, 2~40wt% attapulgites and 1~5wt% binding agent.
6. according to the vacuum insulation panel any one of claim 1-5, it is characterised in that being averaged for the glass fibre is straight Footpath is 10 μm, and draw ratio is more than 500:1.
7. according to the vacuum insulation panel any one of claim 1-6, it is characterised in that the diatomite and attapulgite Size in 300 mesh between 800 mesh sieves.
8. according to the vacuum insulation panel any one of claim 1-7, it is characterised in that the reflection-type gas-barrier separated membrane material Matter is that two kinds of Material claddings of PE and CPP form and surface is coated with metallic film, and the integral thickness of the reflection-type choke barrier film is 0.01~1mm.
9. vacuum insulation panel according to claim 8, it is characterised in that the metallic film is silver, aluminium, nickel and the copper And its one kind in alloy, thickness are 50~500 nm.
10. according to the vacuum insulation panel any one of claim 1-9, it is characterised in that the protective layer is fiber mistake Filter bag, its porosity are more than 80%, and aperture is 0.1~50 μm.
CN201710505291.3A 2017-06-28 2017-06-28 Environment-friendly vacuum insulation board Active CN107387944B (en)

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