CN108456322A - A kind of thermal isolation film and preparation method thereof based on zircon and polyethylene - Google Patents
A kind of thermal isolation film and preparation method thereof based on zircon and polyethylene Download PDFInfo
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- CN108456322A CN108456322A CN201810220570.XA CN201810220570A CN108456322A CN 108456322 A CN108456322 A CN 108456322A CN 201810220570 A CN201810220570 A CN 201810220570A CN 108456322 A CN108456322 A CN 108456322A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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Abstract
The thermal isolation film and preparation method thereof based on zircon and polyethylene that the present invention relates to a kind of, belongs to field of material technology.The thermal isolation film of the present invention is made of radiation base membrane layer and Al film layers, Al film layers are covered in radiation basement membrane layer surface, and the radiation basement membrane layer thickness is 0.05~1mm, and the Al thicknesses of layers is 0.2~1.0 μm, wherein, radiation base membrane layer is made by 70~95 parts of polyvinyl resins and 5~30 parts of zircons.The thermal isolation film of the present invention is specifically that zircon is added in polyvinyl resin to be uniformly mixed and by being extruded into basement membrane, be then made in one layer of Al film layer of membrane surface vacuum evaporation.The thermal isolation film of the present invention constantly outside irradiation space energy can have been haved the function that in the continued down for not needing external energy to building materials automotive field energy-saving radiating using film in 8 13 microns of atmospheric window in the case of fine.
Description
Technical field
The invention belongs to field of material technology, and in particular to a kind of thermal isolation film and its preparation based on zircon and polyethylene
Method.
Background technology
Nowadays, almost all of building and automotive field are required for using cooling system, and most of them are not using
Electric energy that reproducible combustion of fossil fuel generates maintains normal operation, and the heat that strong solar radiation is brought, which is gathered in, to be built
In building body or vehicle glass so that indoor environment temperature and vapour vehicle interior temperature are excessively high, especially in summer, indoor temperature and
Vapour vehicle interior temperature is excessively high so that air conditioner refrigerating electricity consumption is continuously increased, and increases energy consumption.
Therefore, seeking a kind of effective passive radiation cooling thermal isolation film makes it solve the problems, such as the cooling of building materials and automotive field
It is urgently to be resolved hurrily.
Invention content
The goal of the invention of the present invention is provided for problem and the shortcomings of the prior art pointed in background technology
A kind of passive radiation cooling thermal isolation film and preparation method thereof solves the thin-film material in the fields such as automobile, building in the prior art
Part " heat-insulated ", the undesirable defect of heat dissipation effect can be played.
In order to realize that above-mentioned first purpose of the present invention, inventor pass through a large amount of experimental study, have developed one kind
Thermal isolation film based on zircon and polyethylene, the thermal isolation film are made of radiation base membrane layer and Al film layers, the Al film layers covering
In radiation basement membrane layer surface, wherein the radiation basement membrane layer thickness is 0.05~1mm, and the Al thicknesses of layers is 0.2~1 μm.
Further, described in above-mentioned technical proposal radiate base membrane layer by including following mass parts each raw material prepare and
At：
70~95 parts of polyvinyl resin；
5~30 parts of zircon.
Further, the grain size of zircon described in above-mentioned technical proposal is 1~20 μm.
Further, polyvinyl resin described in above-mentioned technical proposal is particle pellet, molecular weight irregularity index model
It is 4~20 to enclose, and melt index of the polyvinyl resin in 230 DEG C, loading 2.16kg is 5~25g/10min.
Preferably, polyethylene described in above-mentioned technical proposal is high density polyethylene (HDPE) (HDPE).
Another object of the present invention is to provide a kind of preparations of the thermal isolation film described above based on zircon and polyethylene
Method, the preparation method include the following steps：
(1) zircon and polyvinyl resin are weighed respectively according to the ratio, after each raw material is carried out vibration of ultrasonic wave processing respectively
It is put into mixing and blending machine, then alcohol is added into blender and submerges material, be stirred well to each material and be uniformly mixed, be made outstanding
Turbid；
(2) suspension made from step (1) is placed in drying in vacuum drying chamber, the temperature for controlling drying box is 50~80
DEG C, drying time is 3~6h, and dry mixed material is made；
(3) dry mixed material made from step (2) is put into heat in extruser and is squeezed out, is prepared by extruded material
At the film that thickness is 0.05~1mm, after being fully cooled, radiation basement membrane is formed；
(4) step (3) the radiation basement membrane is put into vacuum evaporation case and carries out vacuum aluminum-coated, keep radiation membrane surface heavy
Product a layer thickness is 0.2~1 μm of aluminium film, and the thermal isolation film is made.
Further, step (3) described extruser is twin screw mixing extruders, the twin screw mixing extruders
Screw speed is 100~300r/min, and melt temperature is 140~160 DEG C, double a diameter of 8cm of round roller, and rotating speed is 5~25r/
min。
Further, step (3) method that extruded material is prepared into film is that film is arranged in extruder end
Mold and double round roller haulage gears, film is prepared by above-mentioned film die and double round roller haulage gears by extruded material.
Further, above-mentioned technical proposal step (1) the ultrasonic activation processing time is 0.5~1h, is mixed
Time is 0.5~1h.
Further, when step (4) is deposited, the radiation basement membrane described in step (3) is placed in vacuum chamber, closes vacuum chamber
It vacuumizes, when vacuum degree reaches 3 × 10-3Pa, evaporation boat is warming up to 1300 DEG C~1400 DEG C, then again after pretreatment
Purity be 99.9% aluminium wire continuously send to evaporation boat, control working vacuum be 5 × 10-3Pa, source cardinal distance be 18cm, it is cold
But the operating temperature of system is 5~35 DEG C, and it is 0.4~1.0m/min to send aluminium speed, basement membrane coiling speed is 10~30m/min,
So that membrane surface is deposited one layer of aluminium film, the thermal isolation film based on zircon and polyethylene is made.
Compared with prior art, the present invention has following advantageous effect：
Thermal isolation film produced by the present invention can simultaneously radiate from following 3 approach or heat conduction, fast implements cooling：1. the present invention
Al film layers have higher reflectivity in infrared solar radiation wave band and atmospheric radiation wave band, apply in building or vehicle glass
On, it can largely obstruct external heat radiation and enter in building or automobile, to mitigate solar radiation and atmospheric radiation pair
Effect is directly heated in building or automobile；2. the ZrSiO4 particles in present invention radiation basement membrane are in 8~13 microns of atmospheric window
Inside there is higher radiance, and its all band radiance is relatively low, ZrSiO4 particles constantly radiate net heat into air, make film layer
Own temperature constantly reduces；3. the thermal isolation film of the present invention be in contact with it between object can by conductive thermal exchange heat, to make with
Its object contacted or surrounding enviroment cooling.
Description of the drawings
Fig. 1 is that the present invention is based on the thermal isolation film sample structure schematic diagrames of zircon and polyethylene；
Fig. 2 is the simulation cooling experimental provision schematic diagram of the present invention；
Fig. 3 is No. two samples made from the embodiment of the present invention 1 respectively at 1,2,3,4 positions in the numerical value of different time points
Variation diagram；
Fig. 4 is the variation of whole day temperature value and the phase under outdoor normal illumination of No. two samples made from the embodiment of the present invention 1
Change compares figure temperature difference figure with whole day natural temperature under environmental aspect, temperature difference is that sample temperature subtracts environment temperature resulting value；
Fig. 5 is No. two samples of the preparation of the embodiment of the present invention 1 in sunny nocturnal radiation temperature lowering curve and environment temperature
Comparative situation, temperature difference are that sample temperature subtracts environment temperature resulting value；
Fig. 6 is the cooling temperature difference that the sample of the different proportion containing zircon prepared by case study on implementation 1 cools down in nocturnal radiation；
Fig. 7 be by sample obtained by blank control and No. two samples under same illumination condition different time points at same position
Temperature value variation diagram；
Fig. 8 is reflectance map of the different metal in sunlight infrared band.
Reference numeral in figure is：
1, PE；2, zircon；3, Al films；4, No. 1 probes；5, No. 2 probes；6, No. 3 probes；7, No. 4 probes；8, it is in the light
Plate；9, thermometer；10, PE thermal isolation films；11, sample；12, the foam heat-insulating case of outer layer covers aluminium foil.
Specific implementation mode
Technical scheme of the present invention is described in detail below by specific embodiment.Following embodiment is only
It is preferred embodiments of the present invention, is not the restriction for doing other forms to the present invention, any person skilled in the art
The equivalent embodiment for being changed to change on an equal basis possibly also with the technology contents of the disclosure above.It is every without departing from the present invention program
Content, any simple modification made according to the technical essence of the invention to following embodiment or equivalent variations, all fall within this hair
In bright protection domain.
The structural schematic diagram of thermal isolation film made from following each embodiments as shown in Figure 1, the thermal isolation film by radiation base membrane layer
Formed with Al film layers, the Al film layers are covered in radiation basement membrane layer surface, wherein the radiation basement membrane layer thickness for 0.05~
1mm, the Al thicknesses of layers are 0.2~1 μm.
For the polyvinyl resin that the following each embodiments of the present invention use for particle pellet, molecular weight irregularity index range is 4
~20, melt index of the polyvinyl resin in 230 DEG C, loading 2.16kg is 5~25g/10min.
Embodiment 1
A kind of preparation method of thermal isolation film based on zircon and polyethylene of the present embodiment, the method includes walking as follows
Suddenly：
(1) it is 500g, 1000g, 1500g, the zircon and 4000g high that 2000g grain sizes are 1.5 microns to weigh quality respectively
Density Polyethylene Resin carries out each raw material to be put into mixing and blending machine after ultrasonic activation processing 30min breaks up conglomeration respectively,
10L alcohol is added into blender again and submerges material, is sufficiently stirred 30min, each material is made to be uniformly mixed, suspension is made；
(2) suspension made from step (1) being placed in drying in vacuum drying chamber, the temperature for controlling drying box is 50 DEG C,
Drying time is 6h, and dry mixed material is made；
(3) dry mixed material made from step (2) is put into heat in extruser and is squeezed out, and is thin using extruding end
The mixture film extrusion of fusing after being fully cooled, is formed the radiation basement membrane by film die and double round roller haulage gears；
Wherein, screw speed 200r/min, melt temperature are 150 DEG C, the double a diameter of 8cm of round roller, rotating speed 15r/min.
(4) step (3) the radiation basement membrane is put into vacuum evaporation case and carries out vacuum aluminum-coated, reel basement membrane is placed in
In vacuum chamber, vacuum chamber is closed, when vacuum degree reaches 3 × 10-3When Pa, evaporation boat is warming up to 1300 DEG C, then again
The aluminium wire that pretreated purity is 99.9% is continuously sent to evaporation boat.It is 5 × 10 to control working vacuum-3Pa, source cardinal distance is
The operating temperature of 18cm, cooling system are 5 DEG C, and it is 1.0m/min to send aluminium speed, and basement membrane coiling speed is 20m/min, passes through base
Film roll song speed control aluminum layer thickness makes membrane surface deposit one layer of aluminium film, and the thermal isolation film is made, is respectively designated as No. 1 sample
Product (corresponding zircon 500g), No. two samples (corresponding zircon 1000g), No. three samples (corresponding zircon 1500g), No. four samples
Product (corresponding zircon 2000g).
Thermal isolation film made from the present embodiment is made of radiation base membrane layer and Al film layers, and the Al film layers are covered in radiation basement membrane
Layer surface, wherein the radiation basement membrane layer thickness is 0.2mm, and the Al thicknesses of layers is 0.3 μm.
No. two samples of thermal isolation film made from the present embodiment are placed in the sample stage of simulation cooling experimental provision shown in Fig. 2
On, it is respectively the temperature value that 1,2,3,4 positions are in different time points, temperature to record number from top to bottom simultaneously with thermometer respectively
It is as shown in Figure 3 to spend numerical value change.From the figure 3, it may be seen that the thermal isolation film of the present invention has the effect of cooling for the heat-insulated environment of sealed environment,
Temperature in sealing space at different location is below environment temperature, and as temperature is gradual from top to bottom for detection temperature spot position
Decline.
No. two samples of thermal isolation film made from the present embodiment are placed under outdoor normal illumination, with the environment temperature under same condition
Degree variation is compared, and temperature value changes as shown in figure 4, as shown in Figure 4, the present embodiment is heat-insulated under outdoor normal illumination
Film whole day cooling-down effect is apparent, shows that temperature lowering film truly has application value in real life.
No. two samples of thermal isolation film made from the present embodiment are placed in sunny night, are become with the environment temperature under same condition
Change is compared, and temperature value variation in the thermal isolation film of sunny night the present embodiment as shown in figure 5, as shown in Figure 5, cooling down and imitating
Fruit is apparent, shows that thermal isolation film truly has application value in real life.
By four samples manufactured in the present embodiment under same weather condition, its radiation cooling effect temperature difference is measured at night
Curve is as shown in fig. 6, it will be appreciated from fig. 6 that be 1000g in sunny night granular mass and the quality of polyvinyl resin is 4000g
The sample emission cooling-down effect of preparation is best.
Contrast experiment
It is prepared using method same as Example 1, does not only add zircon in basement membrane raw material.By the preparation method system
No. two samples that standby blank experiment is prepared with embodiment 1 are placed in simultaneously under outdoor normal illumination, under same condition with
No. two samples are compared, temperature value variation as shown in fig. 7, as shown in Figure 7, under outdoor normal illumination the present embodiment every
Hotting mask is radiationless, and cooling-down effect is apparent, shows that thermal isolation film made from case study on implementation 1 truly has application value in real life.
Fig. 8 is reflectance map of the different metal in sunlight infrared band, it is known that aluminium film reflected sunlight radianting capacity is very
By force, so that certain thickness Al films can reflect the illumination of most of wave band as shown in Figure 8, there is positive work for heat insulation and heat control
With.
In conclusion in the PE-ZrSiO of the present invention4The thermal insulation film formed after radiation membrane surface plating Al films can be envelope
Closed loop border provides good cooling-down effect, and it is logical that thermal isolation film of the invention can reduce amount of heat by modes such as reflection and heat radiations
Overshoot enters protected environment, and the heat in environmental protection is radiated by 8~13 micron wavebands.
Claims (10)
1. a kind of thermal isolation film based on zircon and polyethylene, it is characterised in that：The thermal isolation film is by radiation base membrane layer and Al films
Layer composition, the Al film layers are covered in radiation basement membrane layer surface, wherein the radiation basement membrane layer thickness is 0.05~1mm, described
Al thicknesses of layers is 0.2~1 μm.
2. the thermal isolation film according to claim 1 based on zircon and polyethylene, it is characterised in that：The radiation base membrane layer
It is prepared by each raw material including following mass parts：
70~95 parts of polyvinyl resin；
5~30 parts of zircon.
3. the thermal isolation film according to claim 2 based on zircon and polyethylene, it is characterised in that：The grain of the zircon
Diameter is 1~20 μm.
4. the thermal isolation film according to claim 2 based on zircon and polyethylene, it is characterised in that：The polyvinyl resin
For particle pellet, molecular weight irregularity index range is 4~20, and the polyvinyl resin is molten in 230 DEG C, loading 2.16kg
It is 5~25g/10min to melt index.
5. the thermal isolation film according to claim 2 based on zircon and polyethylene, it is characterised in that：The polyethylene is height
Density polyethylene.
6. a kind of preparation method according to the thermal isolation film based on zircon and polyethylene described in any one of claim 2~5, special
Sign is：Include the following steps：
(1) zircon and polyvinyl resin are weighed respectively according to the ratio, is put into after each raw material is carried out vibration of ultrasonic wave processing respectively
In mixing and blending machine, then alcohol is added into blender and submerges material, is stirred well to each material and is uniformly mixed, be made suspended
Liquid；
(2) suspension made from step (1) being placed in drying in vacuum drying chamber, the temperature for controlling drying box is 50~80 DEG C,
Drying time is 3~6h, and dry mixed material is made；
(3) dry mixed material made from step (2) is put into heat in extruser and is squeezed out, extruded material is prepared into thickness
Degree is the film of 0.05~1mm, after being fully cooled, forms radiation basement membrane；
(4) step (3) the radiation basement membrane is put into vacuum evaporation case carry out it is vacuum aluminum-coated, make radiation membrane surface deposit one
Layer thickness is 0.2~1 μm of aluminium film, and the thermal isolation film based on zircon and polyethylene is made.
7. the preparation method of the thermal isolation film according to claim 6 based on zircon and polyethylene, it is characterised in that：Step
(3) extruser is twin screw mixing extruders, and the twin screw mixing extruders screw speed is 100~300r/
Min, melt temperature are 140~160 DEG C, double a diameter of 8cm of round roller, and rotating speed is 5~25r/min.
8. the preparation method of the thermal isolation film according to claim 6 based on zircon and polyethylene, it is characterised in that：Step
(3) method that extruded material is prepared into film is that film die and double round roller haulage gears is arranged in extruder end,
Extruded material is prepared into film by above-mentioned film die and double round roller haulage gears.
9. the preparation method of the thermal isolation film according to claim 6 based on zircon and polyethylene, it is characterised in that：Step
(1) the ultrasonic activation processing time is 0.5~1h, and the mixing time is 0.5~1h.
10. the preparation method of the thermal isolation film according to claim 6 based on zircon and polyethylene, it is characterised in that：Step
(4) when being deposited, the radiation basement membrane described in step (3) is placed in vacuum chamber, vacuum chamber is closed, when vacuum degree reaches 3
When × 10-3Pa, evaporation boat is warming up to 1300 DEG C~1400 DEG C, the aluminium wire for being again then 99.9% pretreated purity
Continuously sending to evaporation boat, control working vacuum is 5 × 10-3Pa, and source cardinal distance is 18cm, the operating temperature of cooling system is 5~
35 DEG C, it is 0.4~1.0m/min to send aluminium speed, basement membrane coiling speed is 10~30m/min, and membrane surface is made to deposit one layer of aluminium
The thermal isolation film is made in film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810220570.XA CN108456322A (en) | 2018-03-16 | 2018-03-16 | A kind of thermal isolation film and preparation method thereof based on zircon and polyethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810220570.XA CN108456322A (en) | 2018-03-16 | 2018-03-16 | A kind of thermal isolation film and preparation method thereof based on zircon and polyethylene |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2710893Y (en) * | 2004-02-17 | 2005-07-20 | 戚美香 | High vacuum aluminized thermal insulating film |
| CN103421225A (en) * | 2012-05-21 | 2013-12-04 | 特茂热导工业股份有限公司 | Electrical insulation heat-conductive fireproof material |
| CN104986437A (en) * | 2015-05-29 | 2015-10-21 | 桐城市福润包装材料有限公司 | Production method for UV resistant unstretched polypropylene metalized film |
| WO2017151514A1 (en) * | 2016-02-29 | 2017-09-08 | The Regents Of The University Of Colorado, A Body Corporate | Radiative cooling structures and systems |
| CN107160773A (en) * | 2017-05-11 | 2017-09-15 | 上海洁晟环保科技有限公司 | A kind of composite membrane with infra-red radiation heat sinking function and its production and use |
-
2018
- 2018-03-16 CN CN201810220570.XA patent/CN108456322A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2710893Y (en) * | 2004-02-17 | 2005-07-20 | 戚美香 | High vacuum aluminized thermal insulating film |
| CN103421225A (en) * | 2012-05-21 | 2013-12-04 | 特茂热导工业股份有限公司 | Electrical insulation heat-conductive fireproof material |
| CN104986437A (en) * | 2015-05-29 | 2015-10-21 | 桐城市福润包装材料有限公司 | Production method for UV resistant unstretched polypropylene metalized film |
| WO2017151514A1 (en) * | 2016-02-29 | 2017-09-08 | The Regents Of The University Of Colorado, A Body Corporate | Radiative cooling structures and systems |
| CN107160773A (en) * | 2017-05-11 | 2017-09-15 | 上海洁晟环保科技有限公司 | A kind of composite membrane with infra-red radiation heat sinking function and its production and use |
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| Title |
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| 朱嘉琦 等: "《红外增透保护薄膜材料》", 31 July 2015, 国防工业出版社 * |
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Application publication date: 20180828 |