CN208292907U - Nanometer barrier film - Google Patents
Nanometer barrier film Download PDFInfo
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- CN208292907U CN208292907U CN201721769045.0U CN201721769045U CN208292907U CN 208292907 U CN208292907 U CN 208292907U CN 201721769045 U CN201721769045 U CN 201721769045U CN 208292907 U CN208292907 U CN 208292907U
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Abstract
The utility model provides a kind of nanometer barrier film, and the nanometer barrier film is made of aluminium plating basement membrane, priming coat, barrier coat and the nano-deposit stacked gradually.The nanometer barrier film thickness of the utility model does not obviously increase, and has the preferable aluminium layer adhesive force of aluminium plating basement membrane layer, the superior gas barrier properties that block water, while the durability of film is good, service life is longer.
Description
Technical field
The utility model relates to a kind of nanometer barrier films, belong to vacuum heat-insulating plate technical field.
Background technique
Vacuum heat-insulating plate (abbreviation VIP) is a kind of novel high-efficiency and energy-saving heat-insulation and heat-preservation material that the whole world rapidly develops in recent years
Material, is mainly made of outsourcing material, core material and getter.Core material is the packing material for supporting vacuum cavity, low thermal conductivity, is led to
Often there are flame cotton, rock wool, glass chopped silk, fumed silica etc.；Outsourcing material is that air-isolation and water enter vacuum
Material that is intracavitary, guaranteeing intracavitary vacuum degree；Getter be in absorbing cavity residual gas or by film penetrate into intracavitary gas and water,
Maintain the material of intracavitary vacuum degree.
It wherein vacuumizes core material and a small amount of getter are closed and seal, to reduce cross-ventilation and moisture movement generates
Heat transfer.Outsourcing material is used to guaranteeing and maintaining internal vacuum, and entire heat-insulating shield is made to be in low thermally conductive state, outsourcing material
The gas barrier properties that block water directly influence the energy-saving effect and service life of thermal insulation material.
It is well known that improving the heat-insulating property of vacuum heat-insulating plate, that is, the thermal coefficient of vacuum heat-insulating plate is reduced, is needed from true
Big constitute of the three of empty heat-insulating shield is set about, and the Solid thermal conductivity of core material is reduced, and promotes the ability of getter, and promote outsourcing material
Block water gas barrier properties and reduce outsourcing material heat-sealing after boundary leakage heat.The service life of vacuum heat-insulating plate will usually reach several
Year even more than ten years, accumulation is through the oxygen and vapor of outsourcing material to the shadow of Thermal Insulation Effect of Vacuum Insulated Panel in use process
Sound just becomes clear day by day, then in order to ensure that the Long-Term Properties of vacuum heat-insulating plate, just mention the gas barrier properties that block water of outsourcing material
More stringent requirement out.
Outsourcing material is compound, the usual structure of several thin-film materials are as follows: outer layer is protective layer, and middle layer is barrier layer,
Inner layer is hot sealing layer, and wherein barrier layer is one or more layers polyethylene terephthalate film of aluminizing (VMPET), or metallization
The MULTILAYER COMPOSITE of film (such as aluminium foil) or VMPET and metallized film；Interlayer is carried out compound by adhesive.It rises and mainly blocks water
Choke effect is middle layer barrier layer.
Currently on the market, VMPET film with a thickness of 11-13 μm, water vapor transmittance is≤5.0g/m224h, and helium is saturating
Crossing rate is 5.0 × 10-6PaL/scm2.Naturally, three layers, even more multilayer VMPET film carries out compound, right using two layers
The choke that blocks water of outsourcing material has a degree of promotion, but the problem of existing simultaneously is, it is compound after outsourcing material is partially thick, side
Boundary's leakage heat is obvious.In addition, the preferable aluminium foil of barrier property (or other metallized films) compactness is good, the thin generally 7-9 μ of thickness
M, but thermal conductivity with higher, the thermal coefficient of metal are 1000~1200 times of general plastics thermal coefficient, then metallize
After film use is in outsourcing material, caused by boundary heat bridge effect it is more prominent obvious.
For vacuum heat-insulating plate, after fluffy core material is coated by outsourcing material and vacuumized heat-sealing, core material is by compression body
Product reduces, then leading to the larger i.e. overlap of the distance between hot edge seal and core material, (it is extra to generate relative to compressed core material
Outsourcing material part), when actually using vacuum heat-insulating plate, it usually needs reused after extra overlap is carried out flanging.By
Using after metallized film in the increase of outsourcing material thickness or outsourcing material, first outsourcing material, which is not easy progress flanging, makes
With or flanging after bending part stress great Yi puncture；Second flanging part thickness is multiplied, the leakage of boundary caused by flanging heat
It steeply rises, influences the service life of vacuum heat-preserving insulation product.
Meanwhile although VMPET initial stage has certain vapor barrier properties that block water, there are aluminium coated adhesive force for this kind of film
Difference, aluminize easy transfer the problems such as, particularly through subsequent accelerated ageing tracking test, it is found that there are peel strengths for VMPET composite membrane
The problems such as low, gas barrier properties that block water decline, durability is poor.
So gas barrier properties that block water of promotion single thin film, endurance quality, while without introducing big boundary heat bridge effect
It is imperative.
Utility model content
Blocking water the technical problem to be solved by the present invention is to provide one kind, gas barrier properties are superior, durability is good, boundary is hot
Bridge effect is low, the longer nanometer barrier film of service life.
The technical solution of the utility model are as follows:
A kind of nanometer barrier film is made of the aluminium plating basement membrane, priming coat, barrier coat and the nano-deposit that stack gradually.
Optionally, the priming coat is low-solid content acrylate or polyurethane coating.
Optionally, the priming coat is coated by the acrylate or polyurethane coating of solid content 30~40% and dries shape
At.
Optionally, the barrier coat is high-solid content acrylic acid ester or polyurethane coating.
Optionally, the barrier coat is coated by the acrylate or polyurethane coating of solid content 50~70% and dries shape
At.
Optionally, the priming coat with a thickness of 0.3~0.5 μm.
Optionally, the barrier coat with a thickness of 0.8~1.2 μm.
Optionally, the nano-deposit is aluminium coated, applying silicon oxide layer or plating one of alchlor layer, with a thickness of
Optionally, the barrier coat is the polyurethane coating or oxide containing silicon nanoparticle of oxide containing silicon nanoparticle
The acrylate coatings of son.
Optionally, the aluminium plating basement membrane is aluminize polyethylene terephthalate film (VMPET), cast polypropylene of aluminizing
One of film (VMCPP), bidirectional stretching polypropylene film (VMBOPP).
Nanometer barrier film provided by the utility model is the single-layer membrane structure of broad sense, is that place is optimized to aluminium plating basement membrane
Reason promotes aluminium plating basement membrane surface soundness, barrier by aluminize face successively painting bottom coating and the barrier coat in aluminium plating basement membrane
Ability and aluminium coated adhesive force, then carry out the nano-deposit that vacuum evaporation nanometer grade thickness has the choke ability that centainly blocks water, nanometer
While the thickness of barrier film does not obviously increase, the gas barrier properties that block water are obviously improved, and edge heat bridge effect is weak, durability
Good, the service life is long.
Detailed description of the invention
Fig. 1 is the cross-sectional view of 1 nanometer barrier film of the utility model embodiment；
Fig. 2 is the cross-sectional view of 2 nanometer barrier film of the utility model embodiment.
Specific embodiment
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Embodiment 1
With reference to Fig. 1, a kind of nanometer barrier film is followed successively by aluminium plating basement membrane 1, priming coat 2 from top to bottom, and barrier coat 3 is received
Rice coating 4.
The aluminium plating basement membrane 1 preferably aluminizes polyethylene terephthalate film (VMPET) can also with a thickness of 12 μm
Think one of 25 μm of cast polypropylene films of aluminizing (VMCPP) or 20 μm of bidirectional stretching polypropylene films (VMBOPP).Plating
Aluminum-based film 1 is not limited to above-mentioned three kinds, and suitable plastic basis material surface evaporation metal, thermal coefficient is low, has certain resistance
Water resistance gas ability can be with.Aluminium plating basement membrane 1 has been the very mature film with the choke ability that centainly blocks water, in vacuum insulation
Occur in the traditional outsourcing material composite film in plate field as the structure of main obstructing capacity.But this kind of film of aluminium plating basement membrane 1
There are aluminium coated poor adhesive force, aluminize easy transfer the problems such as, especially after long-term use, this problem is more prominent.
The present embodiment continues to be coated with the priming coat 2 in the aluminium plated surface of the aluminium plating basement membrane 1, and priming coat 2 is acrylic acid
Ester or polyurethane coating, solid content are 30~40%, and the primer thickness is 0.3~0.5 μm, and effect is to reduce the plating
Aluminum-based film 1 is aluminized the roughness on face surface, improves the adhesive force of the barrier coat 3, while adhering to the aluminium layer of aluminium plating basement membrane 1
Also have a certain upgrade effect.
It is coated with the barrier coat 3 on 2 surface of priming coat, the barrier coat 3 is that acrylate or polyurethane apply
Material, solid content are 50~70%, and the barrier coat is with a thickness of 0.8~1.2 μm.It has preferably barrier energy to steam infiltration
Power, while good booster action is played to the adhesive force of coating 4.
Continue vacuum evaporation nano-deposit 4 on 3 surface of barrier coat.The nano-deposit 4 with a thickness ofPreferred thickness is 45nm, 50nm or 55nm.Using vacuum evaporation mode, the nano-deposit 4 is aluminium coated,
One of applying silicon oxide layer or plating alchlor layer, certainly, nano-deposit 4 is not limited to these types, other have one
Surely the nano metal for the choke ability that blocks water, metal oxide or nonmetallic also possible.The nano-deposit 4 and aluminium plating basement membrane
1, priming coat 2, barrier coat 3 forms the single layer nanometer barrier membrane structure of broad sense, cannot be by mechanical stripping, the nanometer barrier
Film thickness increases only 1-2 μm relative to aluminium plating basement membrane 1, but the gas barrier properties that block water obtain very big optimization and promoted.
Nanometer barrier film thickness provided by the utility model does not obviously increase, in subsequent and protective layer, hot sealing layer
After multilayer film is compound, the thickness of composite membrane will not be obviously increased, then avoids the problem of composite membrane flanging causes.Meanwhile it receiving
Rice coating is the metal layer or metal oxide layer or nonmetal oxide layer at one layer tens nanometers of surface vapor deposition, nanometer barrier
Film can substitute metallized film (such as aluminium foil) to a certain extent, and material dosage greatly reduces, and overcomes metal
Change the disadvantages of film strength is low, folding resistance is poor, and boundary fuel factor is obvious.Comprehensive analysis, nanometer barrier provided in this embodiment are thin
Film blocks water, and gas barrier properties are superior, durability is good, boundary heat bridge effect is low, service life is longer.
For example, nanometer barrier film is prepared: aluminium plating basement membrane 1 is VMPET, with a thickness of 12 μm；Priming coat 2 is acrylic acid
Ester paint, solid content 35%, solvent are ethyl acetate, and gained priming coat 2 is with a thickness of 0.4 μm；Barrier coat 3 is polyurethane painting
Material, solid content 60%, solvent is pure water, and gained barrier coat 3 is with a thickness of 1.1 μm；Nano-deposit 4 is aluminium coated, with a thickness ofThe helium transmitance and moisture-vapor transmission index contrast of the nanometer barrier film and VMPET film that are prepared are seen below
Table one, it can be seen that it is obvious that the gas barrier properties that block water of nanometer barrier film promote effect.
1 nanometer barrier film of table and VMPET film single-layer membrane structure helium transmitance and moisture-vapor transmission index contrast
Embodiment 2
With reference to Fig. 2, the present embodiment the difference from embodiment 1 is that: the barrier coat 3 ' be oxide containing silicon nanoparticle
The polyurethane coating of son or the acrylate coatings of oxide containing silicon nanoparticle, SiOx nanoparticle specific gravity are 5-9%,
Partial size is 10~50nm.Because of 3 ' coating liquid mobility of barrier coat and surface tension, after drying process, coating surface is microcosmic
State is not smooth, by nanoparticle dispersed filler to coated surface is applied, its roughness is reduced, when improving vacuum evaporation
The adhesive force of coating.The polyurethane coating of its oxide containing silicon nanoparticle used or the acrylic acid of oxide containing silicon nanoparticle
Ester paint is known materials.
Above-mentioned nanometer barrier film is single thin film structure, cannot be by mechanical stripping.The present embodiment preparation method is in base
One layer tens nanometers of nano-deposit is deposited in material surface, and dosage greatly reduces, and will not introduce when nanometer barrier film is bent
Big boundary fuel factor, while overcoming that aluminium foil (or other metallized films) intensity is low, unyielding disadvantage.Nanometer barrier is thin
Film blocks water, and gas barrier properties are superior, durability is good, lower boundary heat bridge effect, service life are longer.
The above descriptions are merely preferred embodiments of the present invention, not makees to the technical scope of the utility model
Any restrictions, the present embodiment are intended to illustrate the idea of the utility model and working principle, therefore all skills according to the utility model
The subtle modifications, equivalent variations and modifications of art essence made to above embodiments any shape and structure are still fallen within practical
In the range of new technique scheme.
Claims (1)
1. a kind of nanometer barrier film, it is characterised in that: by aluminium plating basement membrane, priming coat, barrier coat and the nanometer stacked gradually
Coating composition;
The priming coat is low-solid content acrylate or polyurethane coating；
The barrier coat is high-solid content acrylic acid ester or polyurethane coating；
The priming coat with a thickness of 0.3 ~ 0.5 μm；
The barrier coat with a thickness of 0.8 ~ 1.2 μm；
The nano-deposit is one of aluminium coated, applying silicon oxide layer or plating alchlor layer, with a thickness of 300 ~ 650；
The barrier coat is the polyurethane coating of oxide containing silicon nanoparticle or the acrylic acid of oxide containing silicon nanoparticle
Ester coating；
The aluminium plating basement membrane is aluminize polyethylene terephthalate film (VMPET), cast polypropylene film of aluminizing
(VMCPP), one of bidirectional stretching polypropylene film (VMBOPP).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721769045.0U CN208292907U (en) | 2017-12-18 | 2017-12-18 | Nanometer barrier film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721769045.0U CN208292907U (en) | 2017-12-18 | 2017-12-18 | Nanometer barrier film |
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| Publication Number | Publication Date |
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| CN208292907U true CN208292907U (en) | 2018-12-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512344A (en) * | 2020-04-09 | 2021-10-19 | 宣城亨旺新材料有限公司 | Water-blocking and air-blocking coating and water-blocking and air-blocking structure using same |
-
2017
- 2017-12-18 CN CN201721769045.0U patent/CN208292907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512344A (en) * | 2020-04-09 | 2021-10-19 | 宣城亨旺新材料有限公司 | Water-blocking and air-blocking coating and water-blocking and air-blocking structure using same |
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