Stratosphere aerostatics covering and preparation method thereof
Technical field
The present invention relates to aerostatics manufacturing technology field, in particular to a kind of stratosphere aerostatics covering and its system
Preparation Method.
Background technology
Stratosphere aerostatics is the multi-functional flying platform of a kind of new near space got up with development in science and technology.
It is different from aircraft of the flight in aviation layer, low latitude aerostatics, and also different from the satellite being operated on low orbit, it has very
Widely military and civilian value, for example at aspects such as missile defence, anti-terrorism, communication, remote sensing, spatial observation and aeromerric moasurenonts all
There is great using value.
Primary structure of the covering as aerostatics, the height of its performance directly affects the application performance of aerostatics, and
One of key technology of restriction China stratosphere aerostatics development.Affect covering performance quality many factors in, lightweight and
Resistance helium is two vital indexs of aerostatics skin material, and especially, the gas barrier property of skin material is current
The development of restriction aerostatics and the bottleneck of application.
It is based on the problems referred to above, it is necessary to provide a kind of gas barrier property excellent stratosphere aerostatics covering.
Content of the invention
Present invention is primarily targeted at a kind of stratosphere aerostatics covering and preparation method thereof is provided, to solve existing skill
The problem of stratosphere aerostatics covering gas barrier property difference in art.
To achieve these goals, according to an aspect of the invention, there is provided a kind of stratosphere aerostatics covering, which wraps
Include weathering layer, barrier layer, bearing layer and weld layer that superposition is arranged;Wherein, barrier layer includes:First aluminizes macromolecule membrane
Layer;Second aluminizes macromolecule membrane layer;And positioned at first aluminize macromolecule membrane layer and second aluminize macromolecule membrane layer it
Between two-dimensional sheet nano material-resin bed.
Further, two-dimensional sheet nano material-resin bed is Graphene-resin bed, graphene oxide-resin bed or cloud
Mother-resin bed.
Further, the first macromolecule membrane layer and/or second of aluminizing aluminizes macromolecule membrane layer for aluminum plated PET layer.
Further, two-dimensional sheet nano material-resin bed is two-dimensional sheet nano material-layer of polyurethane.
Further, weathering layer is polyvinylidene fluoride layer or polyvinylidene chloride layer;And/or, bearing layer be fibrage or
Fiber-thermoplastic polymer composite bed;And/or, weld layer is thermoplastic urethane layers.
Further, fibrage is polyethylene fiber layer, aramid fiber layer or pbo fiber layer;Fiber-thermoplastic polymer
Composite bed is polyethylene fibre-thermoplastic polymer composite bed, aramid fiber-thermoplastic polymer composite bed or pbo fiber-heat
Thermoplastic polymer composite bed.
Further, in barrier layer, first aluminizes macromolecule membrane layer and/or the second thickness for aluminizing macromolecule membrane layer
For 15~35 μm, the thickness of two-dimensional sheet nano material-resin bed is 10~25 μm.
Further, the thickness of weathering layer is 10~30 μm, and the thickness of bearing layer is 80~200 μm, the thickness of weld layer
For 8~35 μm.
Further, the first glue-line is additionally provided between weathering layer and barrier layer;And/or between barrier layer and bearing layer also
It is provided with the second glue-line;And/or between bearing layer and weld layer, it is additionally provided with the 3rd glue-line.
Further, the first glue-line, the second glue-line and the 3rd glue-line separately selected from thermoplastic polyurethane adhesive layer,
Polyester adhesive layer or two-dimensional sheet nano material-polyurethane adhesive adhesion coating.
According to a further aspect in the invention, additionally provide a kind of preparation method of stratosphere aerostatics covering, it include with
Lower step:Two-dimensional sheet nano material-resin bed is formed on the first side surface for aluminizing macromolecule membrane layer, and in two dimension
Flake nano material-resin bed aluminize away from first macromolecule membrane layer side surface on form second and aluminize macromolecule membrane
Layer, and then form barrier layer;And weathering layer, barrier layer, bearing layer and weld layer are stacked successively, then formed through hot pressing flat
Fluid layer aerostatics covering.
Further, during weathering layer, barrier layer, bearing layer and weld layer being stacked successively, also include following step
Suddenly:Place the first glue-line solid-state preparation layers between weathering layer and barrier layer, and/or the is placed between barrier layer and bearing layer
Two glue-line solid-state preparation layers, and/or the 3rd glue-line solid-state preparation layers are placed between bearing layer and weld layer, then hot pressing is formed
Stratosphere aerostatics covering.
Further, during weathering layer, barrier layer, bearing layer and weld layer being stacked successively, also include following step
Suddenly:The first glue-line liquid preparation layers are coated in weathering layer lower surface, and/or it is pre- the second glue-line liquid to be coated in barrier layer lower surface
Standby layer, and/or the 3rd glue-line liquid preparation layers are coated in bearing layer lower surface, then hot pressing forms stratosphere aerostatics covering.
The invention provides a kind of stratosphere aerostatics covering and preparation method thereof, in above-mentioned stratosphere aerostatics covering,
Barrier layer includes that being superimposed the two-layer for arranging aluminizes macromolecule membrane layer, and aluminizes in two-layer and be additionally provided between macromolecule membrane layer
Two-dimensional sheet nano material-resin bed.For compared to other shapes nano material-resin bed, two-dimensional sheet nano material-tree
Lipid layer has more excellent gas barrier property.In above-mentioned barrier layer, two-layer aluminize macromolecule membrane layer and centre two dimension
Flake nano material-resin bed defines powerful gas barrier barrier, reduces the gas permeation rate of whole covering, makes floating
Device maintains a long-term stability.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation according to stratosphere aerostatics covering in one embodiment of the present invention;And
Fig. 2 shows the structural representation according to stratosphere aerostatics covering in another embodiment of the invention.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
As background section is introduced, the gas barrier property of the covering that existing stratosphere aerostatics is adopted compared with
Difference.In order to solve this problem, the invention provides a kind of stratosphere aerostatics covering, which includes being superimposed the weathering layer for arranging
110th, barrier layer 120, bearing layer 130 and weld layer 140;Wherein, as shown in figure 1, barrier layer 120 includes that first aluminizes macromolecule
Film layer 121, second aluminizes macromolecule membrane layer 122, and aluminizes height positioned at the first macromolecule membrane layer 121 and second of aluminizing
Two-dimensional sheet nano material-resin bed 123 between polymer film layer 122.
In above-mentioned stratosphere aerostatics covering provided by the present invention, barrier layer 120 includes that being superimposed the two-layer for arranging aluminizes
Macromolecule membrane layer, and aluminize in two-layer and between macromolecule membrane layer, be additionally provided with two-dimensional sheet nano material-resin bed 123.
For compared to other shapes nano material-resin bed, there is two-dimensional sheet nano material-resin bed more excellent gas to hinder
Separating performance.In above-mentioned barrier layer 120, two-layer aluminize macromolecule membrane layer and centre two-dimensional sheet nano material-resin bed shape
Into powerful gas barrier barrier, the gas permeation rate of whole covering is reduced, make aerostatics maintain a long-term stability.
In above-mentioned barrier layer 120, two-dimensional sheet nano material-resin bed 123 can be aluminized macromolecule membrane layer with first
121 and second the aluminium coated that aluminizes in macromolecule membrane layer 122 adjacent, it is also possible to aluminize macromolecule membrane layer 121 with first
And second the macromolecule membrane layer that aluminizes in macromolecule membrane layer 122 adjacent.Preferably, first aluminize macromolecule membrane layer
Away from two-dimensional sheet nano material-resin bed 123, such being provided with is beneficial to be radiated on covering too aluminium coated in 121
Sunlight is reflected more in time by aluminium coated, improves the weatherability of covering.
The above-mentioned aerostatics covering that the present invention is provided, the nano material that applies in two-dimensional sheet nano material-resin bed 123
As long as there is two-dimensional sheet structure, it becomes possible to improve the gas barrier property of covering.In a preferred embodiment, above-mentioned
Two-dimensional sheet nano material-resin bed 123 is Graphene-resin bed, graphene oxide-resin bed or mica-resin bed.This is several
Plant two-dimensional sheet nano material-resin bed and be respectively provided with higher gas barrier property, and density is lighter, as aerostatics covering
Structure sheaf will not produce excessive impost.
Term " two-dimensional sheet nano material-resin bed " herein refers to that two-dimensional sheet nano material is disperseed as filler
The composite bed formed in resin bed;Term " Graphene-resin bed " refers to that Graphene is dispersed in shape in resin bed as filler
Into composite bed;Term " graphene oxide-resin bed " refers to that graphene oxide is dispersed in formation in resin bed as filler
Composite bed;Term " mica-resin bed " refers to that mica is dispersed in the composite bed that formed in resin bed as filler.Graphene, oxygen
Graphite alkene and mica are two-dimensional sheet nano materials.
It is highly preferred that above-mentioned two-dimensional sheet nano material-resin bed 123 is Graphene-resin bed or graphene oxide-tree
Lipid layer.In addition to there is higher gas barrier property and lighter density, Graphene-resin bed and graphene oxide-resin
Layer has preferable heat conductivility.This be conducive to improve covering overall thermal conductivity energy, make covering receive sunlight when
Whole covering can be conducted heat in time, so that the temperature of covering each several part is more homogeneous, and then covering be prevented because of office
Portion is heated the danger of explosion.
It is highly preferred that above-mentioned two-dimensional sheet nano material-resin bed 123 is two-dimensional sheet nano material-layer of polyurethane.Phase
For compared with other two-dimensional sheet nano material-resin beds, two-dimensional sheet nano material-have between layer of polyurethane and other layers
Preferable adhesive property.
In a preferred embodiment, the above-mentioned first macromolecule membrane layer 121 and/or second of aluminizing is aluminized macromolecule
Film layer 122 is aluminum plated PET layer.Compared to other macromolecule membrane layers of aluminizing, aluminum plated PET layer has more excellent gas barrier property
Energy.Meanwhile, aluminum plated PET layer also has good weatherability, and toughness at low temperature is higher, preferably exists as stressed-skin construction layer
The relatively low near space of temperature is used.
In a preferred embodiment, weathering layer 110 is polyvinylidene fluoride layer or polyvinylidene chloride layer;And/or
Bearing layer 130 is fibrage or fiber-thermoplastic polymer composite bed;And/or weld layer 140 is thermoplastic urethane layers.?
During use, weathering layer can be exposed in high altitude environment.
Term " fiber-thermoplastic polymer composite bed " refers to that reinforcing fiber and thermoplastic polymer layer are sutured by hot melt
The composite bed for being formed afterwards.
Polyvinylidene fluoride layer or polyvinylidene chloride layer have high weather resistance, can enter one as weathering layer 110
Step plays a part of uvioresistant, protects inner layer material and prevents gas from leaking.
Fibrage and fiber-thermoplastic polymer composite bed have higher intensity and modulus, can as bearing layer 130
Improve the comprehensive mechanical property of covering.Preferably, bearing layer 130 be fiber-thermoplastic polymer composite bed, fiber-thermoplasticity
Thermoplastic polymer layer in polymer composite layer can play cementation in hot melt suture, and can be existed with fiberfill fibers
The pin hole produced during sewing, so that further improve the gas barrier properties of overall covering.It is highly preferred that above-mentioned fibrage is polyethylene
Fibrage, aramid fiber layer or pbo fiber layer;Fiber-thermoplastic polymer composite bed is polyethylene fibre-thermoplastic polymer
Composite bed, aramid fiber-thermoplastic polymer composite bed or pbo fiber-thermoplastic polymer composite bed.These fibrages and fibre
Dimension-thermoplastic polymer composite bed is respectively provided with more preferably mechanical property, and its weatherability is preferable, density is lighter, and conduct preferably is floated
The structure sheaf of pocket covering.
This stratosphere aerostatics covering that the present invention is provided, as long as its barrier layer 120 is thin with two-layer macromolecule of aluminizing
Film layer and two-dimensional sheet nano material-resin bed positioned there between, you can improve the gas barrier property of aerostatics covering.
In a preferred embodiment, the first macromolecule membrane layer 121 and/or second of aluminizing is aluminized macromolecule membrane layer 122
Thickness is 15~35 μm, and the thickness of two-dimensional sheet nano material-resin bed 123 is 10~25 μm.Above-mentioned first aluminizes macromolecule
Film layer 121 and second aluminize macromolecule membrane layer 122 thickness identical or different.Thickness control by each layer in barrier layer 120
System within the above range, can be such that covering has compared with having lighter quality concurrently on the basis of high-gas resistance, heat conductivility performance.This
Outward, in two-dimensional sheet nano material-resin bed 123, the content of two-dimensional sheet nano material is preferably 0.5~10wt%.
Those skilled in the art can select the concrete thickness of weathering layer 110, bearing layer 130 and weld layer 140.In one kind
In preferred embodiment, the thickness of weathering layer 110 is 10~30 μm, and the thickness of bearing layer 130 is 80~200 μm, weld layer
140 thickness is 8~35 μm.By the THICKNESS CONTROL of weathering layer 110, bearing layer 130 and weld layer 140 in above range, can
On the premise of compared with low-density, make stratosphere aerostatics covering that there is higher combination property.
In a preferred embodiment, as shown in Fig. 2 being additionally provided with first between weathering layer 110 and barrier layer 120
Glue-line 101;And/or between barrier layer 120 and bearing layer 130, it is additionally provided with the second glue-line 102;And/or bearing layer 130 and welding
The 3rd glue-line 103 is additionally provided between layer 140.Between the layers arrange glue-line, further can improve covering each layer it
Between adhesive property.It is highly preferred that the first glue-line 101, the second glue-line 102 and the 3rd glue-line 103 are separately selected from thermoplastic
Property polyurethane adhesive adhesion coating, polyester adhesive layer or two-dimensional sheet nano material-polyurethane adhesive adhesion coating.Using above-mentioned several adhesive layers as
Glue-line, can further improve the combination properties such as the mechanical property of stratosphere aerostatics covering, weather resistance, air-tightness.On
State two-dimensional sheet nano material-polyurethane adhesive adhesion coating and be preferably again Graphene-polyurethane adhesive adhesion coating, graphene oxide-poly- ammonia
Ester gum adhesion coating or mica-polyurethane adhesive adhesion coating, and the content of two-dimensional sheet nano material therein is 0.5~10wt%.Will be each
The content of the two-dimensional sheet nano material in glue-line controls within the above range, to be conducive to the gas barrier for further improving covering
Performance, and make glue-line that there is higher glueability, to ensure the adhesion strength between each layer of covering.
In addition, according to a further aspect in the invention, a kind of preparation method of stratosphere aerostatics covering is additionally provided, which wraps
Include following steps:Two-dimensional sheet nano material-resin bed is formed on the first side surface for aluminizing macromolecule membrane layer 121
123, and formed on the surface that two-dimensional sheet nano material-resin bed 123 aluminizes 121 side of macromolecule membrane layer away from first
Second aluminizes macromolecule membrane layer 122, and then forms barrier layer 120;And by weathering layer 110, barrier layer 120, bearing layer 130
And weld layer 140 is stacked successively, then stratosphere aerostatics covering is formed through hot pressing.
In stratosphere aerostatics covering made by above-mentioned preparation method provided by the present invention, barrier layer 120 includes folding
Add the two-layer that puts to aluminize macromolecule membrane layer, and aluminize in two-layer and between macromolecule membrane layer, be additionally provided with two-dimensional sheet nanometer
Material-resin bed 123.For compared to other shapes nano material-resin bed, two-dimensional sheet nano material-resin bed has
More excellent gas barrier property.In above-mentioned barrier layer 120, two-layer aluminize macromolecule membrane layer and centre two-dimensional sheet receive
Rice material-resin bed defines powerful gas barrier barrier, reduces the gas permeation rate of whole covering, keeps aerostatics
Steadily in the long term.
Above-mentioned first aluminize macromolecule membrane layer 121 and second aluminize between macromolecule membrane layer 122 formed two-dimensional slice
In the step of shape nano material-resin bed 123, two-dimensional sheet nano material first can be mixed in resin adhesive liquid and form mixing
Glue, secondly by epoxy glue be coated in first aluminize macromolecule membrane layer 121 a side surface on, then will be thin for the second macromolecule of aluminizing
Film layer 122 is covered on mixed cutan, finally cured formation barrier layer 120.
In a preferred embodiment, by weathering layer 110, barrier layer 120, bearing layer 130 and weld layer 140 successively
During stacking, further comprising the steps of:The first glue-line solid-state preparation layers are placed between weathering layer 110 and barrier layer 120,
And/or place the second glue-line solid-state preparation layers between barrier layer 120 and bearing layer 130, and/or in bearing layer 130 and welding
The 3rd glue-line solid-state preparation layers are placed between layer 140, and then hot pressing forms stratosphere aerostatics covering.
In a preferred embodiment, by weathering layer 110, barrier layer 120, bearing layer 130 and weld layer 140 successively
During stacking, further comprising the steps of:The first glue-line liquid preparation layers are coated in 110 lower surface of weathering layer, and/or in resistance
120 lower surface of interlayer coats the second glue-line liquid preparation layers, and/or it is pre- to coat the 3rd glue-line liquid in 130 lower surface of bearing layer
Standby layer, then hot pressing form stratosphere aerostatics covering.
It is the method for two kinds of introducing glue-lines above.Wherein first method is that the glue-line of solid-state is layered on corresponding position first
Put, after hot pressing, realize each layer bonding.Second method is the glue-line for coating liquid in advance on equivalent layer, then through hot-press solidifying
Realize each layer bonding.
According to the above-mentioned teaching of the present invention, those skilled in the art can select specific heat pressing process.A kind of preferred
Embodiment in, in above-mentioned hot pressing, hot pressing temperature be 80~180 DEG C, hot pressing pressure be 0.1~1mpa.By hot pressing
Temperature and pressure is controlled in above range, is conducive to the bonding further improved in stratosphere aerostatics covering between each layer strong
Degree.
The application is described in further detail below in conjunction with specific embodiment, these embodiments are it is not intended that limit this
Apply for scope required for protection.
Embodiment 1
Coated mica-polyurethane epoxy glue on the upper surface of aluminum plated PET layer, and one layer of aluminum plated PET is covered above glue-line
Layer, after hot pressing, forms barrier layer standby;Wherein, in middle mica-layer of polyurethane, the content of mica is 0.5wt%;
Will be fine to polyvinylidene fluoride layer, the first thermoplastic polyurethane glued membrane, barrier layer, the second thermoplastic polyurethane glued membrane, PBO
Laying is good from bottom to top for dimension layer, the 3rd thermoplastic polyurethane glued membrane and weld layer thermoplastic urethane layers, and hot pressing forms stratosphere
Aerostatics covering.Wherein, hot pressing temperature is 80 DEG C, and pressure is 1mpa.
In the stratosphere aerostatics covering for being formed, the thickness of polyvinylidene fluoride layer is 10 μm, the thickness of two-layer aluminum plated PET layer
Degree is 35 μm, and mica-layer of polyurethane is 10 μm, and pbo fiber layer is 200 μm, and the thickness of weld layer is 8 μm, the thickness of each glue-line
Spend for 10 μm.
Embodiment 2
Graphene-polyurethane epoxy glue is coated with the upper surface of aluminum plated PET layer, and covers one layer above glue-line aluminize
Pet layer, after hot pressing, forms barrier layer standby;Wherein, in middle Graphene-layer of polyurethane, the content of Graphene is
0.5wt%;
Will be fine to polyvinylidene fluoride layer, the first thermoplastic polyurethane glued membrane, barrier layer, the second thermoplastic polyurethane glued membrane, PBO
Laying is good from bottom to top for dimension layer, the 3rd thermoplastic polyurethane glued membrane and weld layer thermoplastic urethane layers, and hot pressing forms stratosphere
Aerostatics covering.Wherein, hot pressing temperature is 80 DEG C, and pressure is 1mpa.
In the stratosphere aerostatics covering for being formed, the thickness of polyvinylidene fluoride layer is 10 μm, the thickness of two-layer aluminum plated PET layer
Degree is 35 μm, and Graphene-layer of polyurethane is 10 μm, and pbo fiber layer is 200 μm, and the thickness of weld layer is 8 μm, each glue-line
Thickness is 10 μm.
Embodiment 3
Graphene oxide-polyurethane epoxy glue is coated with the upper surface of aluminum plated PET layer, and covers one layer of plating above glue-line
Aluminium pet layer, after hot pressing, forms barrier layer standby;Wherein, graphene oxide contains in middle graphene oxide-layer of polyurethane
Measure as 0.5wt%;
By polyvinylidene chloride layer, the first graphene oxide-thermoplastic polyurethane glued membrane, barrier layer, the second graphite oxide
Alkene-thermoplastic polyurethane glued membrane, pbo fiber layer, three graphene oxides-thermoplastic polyurethane glued membrane and weld layer thermoplastic poly
Laying is good from bottom to top for urethane layer, and hot pressing forms stratosphere aerostatics covering.Wherein, hot pressing temperature is 80 DEG C, and pressure is 1mpa.
In each graphene oxide-thermoplastic polyurethane glued membrane, the content of graphene oxide is 0.5wt%.
In the stratosphere aerostatics covering for being formed, the thickness of polyvinylidene chloride layer is 30 μm, two-layer aluminum plated PET layer
Thickness is 15 μm, and graphene oxide-layer of polyurethane is 25 μm, and pbo fiber layer is 80 μm, and the thickness of weld layer is 35 μm, respectively
The thickness of glue-line is 10 μm.
Embodiment 4
Graphene-polyurethane epoxy glue is coated with the upper surface of aluminum plated PET layer, and covers one layer above glue-line aluminize
Pet layer, after hot pressing, forms barrier layer standby;Wherein, in middle Graphene-layer of polyurethane, the content of Graphene is 10wt%;
By polyvinylidene chloride layer, the first Graphene-thermoplastic polyurethane glued membrane, barrier layer, the second Graphene-thermoplasticity
Polyurethane laminate, pbo fiber layer, three Graphenes-thermoplastic polyurethane glued membrane and weld layer thermoplastic urethane layers from lower and
Upper berth is folded, and hot pressing forms stratosphere aerostatics covering.Wherein, hot pressing temperature is 180 DEG C, and pressure is 0.1mpa.Each Graphene-
In thermoplastic polyurethane glued membrane, the content of Graphene is 10wt%.
In the stratosphere aerostatics covering for being formed, the thickness of polyvinylidene chloride layer is 30 μm, two-layer aluminum plated PET layer
Thickness is 15 μm, and graphene oxide-layer of polyurethane is 25 μm, and pbo fiber layer is 80 μm, and the thickness of weld layer is 35 μm, respectively
The thickness of glue-line is 10 μm.
Comparative example 1
The heat of liquid is respectively coated with polyvinylidene fluoride layer upper surface, aluminum plated PET layer upper surface and PBO tissue layers upper surface
Plastic polyurethane glue, then by coated three layers from bottom to top laying good, and be covered with weld layer thermoplastic poly in the top
Urethane layer, hot pressing form stratosphere aerostatics covering.Wherein, hot pressing temperature is 100 DEG C, and pressure is 0.8mpa.
In the stratosphere aerostatics covering for being formed, the thickness of polyvinylidene fluoride layer is 30 μm, and the thickness of aluminum plated PET layer is
15 μm, PBO tissue layers are 80 μm, and the thickness of each layer plastic polyurethane layer is 10 μm.
The gas barrier property of prepared stratosphere aerostatics covering in embodiment 1 to 4 and comparative example 1 is characterized
Test:
Characterizing method:Measure in embodiment 1 to 4 and comparative example 1 respectively according to GB/T1038-2000 prepared whole flat
The helium barrier property of fluid layer aerostatics covering and barrier layer, the results are shown in Table 1.
Table 1
From above data, it can be seen that the above embodiments of the present invention achieve following technique effect:By barrier layer
The two-layer for being set to be superimposed is aluminized and macromolecule membrane layer and is received positioned at the two-layer two-dimensional sheet between macromolecule membrane layer of aluminizing
Rice material-resin bed, can significantly reduce the gas permeation rate of barrier layer and whole covering, make aerostatics maintain a long-term stability.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.