CN205601304U - High altitude resistance to compression membrane - Google Patents
High altitude resistance to compression membrane Download PDFInfo
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- CN205601304U CN205601304U CN201620302941.5U CN201620302941U CN205601304U CN 205601304 U CN205601304 U CN 205601304U CN 201620302941 U CN201620302941 U CN 201620302941U CN 205601304 U CN205601304 U CN 205601304U
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Abstract
The utility model discloses a high altitude resistance to compression membrane, its characterized in that includes BOPA layer, first glue film, HDPE layer, second glue film and LDPE layer by interior outside to in proper order, wherein, LDPE in situ portion is provided with the bubble. It is compressive property to have used HDPE membrane and LDPE membrane to improve the complex film, setting up of bubble makes the complex film have the cushioning effect to the pressure that receives to improve the compressive capacity of complex film, the inside of titanium aluminium intermetallic compound coating pair recombination membrane has the heat preservation effect to reduce the inside and outside pressure differential of complex film, and titanium aluminium intermetallic compound coating has stronger wear -resisting, corrosion resistance, can protect the complex film not receive the erosion aloft.
Description
Technical field
This utility model relates to compression-resistant material field, more specifically, it relates to a kind of high-altitude compressive film.
Background technology
Fire balloon, is to utilize the air of heating or the density of some gas such as hydrogen or helium less than the atmospheric density outside balloon to produce buoyancy flight.When fire balloon flies in the air, and air is more and more thinner, i.e. air pressure outside fire balloon is the least, then the pressure differential inside and outside fire balloon becomes big, acts on the pressure on fire balloon and becomes big, so the material of fire balloon must have certain anti-pressure ability.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of high pressure compressive film that can bear bigger inside and outside differential pressure at height in the air.
For achieving the above object, this utility model provides following technical scheme:
A kind of high-altitude compressive film, includes BOPA layer, the first glue-line, HDPE layer, the second glue-line and LDPE layer the most successively, and wherein, described LDPE layer is internally provided with bubble.
By using technique scheme, when this film is in high aerial, owing to film extraneous air ratio is leaner, so that the pressure differential inside and outside film becomes big, BOPA is BON biaxially oriented nylon film, there is good toughness, it is when affording pressure differential, and whole film can be played the effect of stretching by it, and BOPA film has fabulous barrier properties for gases, making whole film have good seal, BOPA film also has relatively broad temperature applicability and thermostability；
High density polyethylene (HDPE) (High Density Polyethylene, referred to as " HDPE "), it it is a kind of degree of crystallinity thermoplastic resin high, nonpolar, there is good thermostability and tolerance to cold, chemical stability is good, also having higher rigidity and toughness, mechanical strength, electrical property, environmental stress crack resistance are also preferable, i.e. have certain compressive resistance；
LDPE, it is called again polyethylene from high pressure process, there is the advantages such as intensity height, good toughness, rigidity be strong, heat-resisting, cold-resistant, also there is the performances such as good resisting environmental stress and cracking, tear-resistant intensity, and can acid and alkali resistance, organic solvent etc., LDPE has fabulous rheological characteristic and melt fluidity, when the effect being under pressure, there is good elastic space, strengthen compressive resistance.
Between BOPA layer, HDPE layer and LDPE layer all bonding with glue-line so that trilamellar membrane is combined into a composite membrane, and realizes the compressive property to whole composite membrane under the progradation of HDPE layer and the compressive property of LDPE layer and BOPA layer；And being provided with bubble on LDPE layer, when this film is in high dummy status, due to the change of air pressure, bubble can produce pressure to the film of its surrounding, and so, it is poor that bubble just can offset partial pressure, i.e. strengthens the compressive property of composite membrane.
Further, described bubble is 60%～63% at the distributive law of LDPE layer.
By using technique scheme, show through lot of experimental data, when bubble is when the distributive law of LDPE layer is 60%～63%, it is possible to while ensureing the structural strength of LDPE layer, reach best buffering effect.
Further, described first glue-line and the second glue-line are epoxyn.
By using technique scheme, epoxyn contains various polarity group and the biggest active epoxy radicals, thus the material high with surface activitys such as BOPA film, HDPE film and LDPE films has the strongest bonding force, the cohesive strength of curable epoxide thing is the biggest simultaneously, so its glue-joint strength is the highest；The linear expansion coefficient of curable epoxide thing is the least, and therefore internal stress is little, and little on glue-joint strength impact, the creep of curable epoxide thing is little in addition, so the good stability of the dimension of glue-line, when it is in high aerial, even if the effect of being under pressure, does not also interfere with its viscosity.
Further, described high-altitude compressive film also includes being coated with the coating for reflecting light being located at outside LDPE layer.
By using technique scheme, the effect of coating can the reflected illumination light on film surface, thus prevent light direct irradiation to enter inside film so that film internal gas expanded by heating and strengthen the pressure to film, the most just reduce the probability of film pressurized.
Further, described coating includes Intermatallic Ti-Al compound.
By using technique scheme, first, the density of Intermatallic Ti-Al compound is low, thus lightweight, it is suitable as the coating on fire balloon surface；Second, Intermatallic Ti-Al compound has the most wear-resisting, corrosion resistance, and structural strength is high；3rd, Intermatallic Ti-Al compound is capable of reflecting light line so that light can not enter inside film by direct irradiation, further increases the crushing resistance of composite membrane.
Compared with prior art, the utility model has the advantages that:
1, employ HDPE film and LDPE film to improve composite membrane be compressive property；
2, bubble can weaken the pressure differential inside and outside composite membrane, thus improve the anti-pressure ability of composite membrane；
3, Intermatallic Ti-Al compound coating has heat insulation effect to the inside of composite membrane, thus reduces the pressure differential inside and outside composite membrane, and Intermatallic Ti-Al compound coating has stronger wear-resisting, corrosion resistance, it is possible to protection composite membrane does not weathers at height.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one of the present utility model；
Fig. 2 is the structural representation of embodiment two of the present utility model.
Reference: 1, BOPA layer；2, the first glue-line；3, HDPE layer；4, the second glue-line；5, LDPE layer；51, bubble；6, coating.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, this utility model is described in detail.
Embodiment one
With reference to Fig. 1, a kind of high-altitude compressive film, include the first glue-line 2 that there is stronger ductile BOPA layer 1, be made up of epoxyn the most successively, there is the HDPE layer 3 of stronger compressive resistance, the second glue-line 4 being made up of epoxyn, and there is the LDPE layer 5 of the performances such as good resisting environmental stress and cracking, tear-resistant intensity.It addition, LDPE layer 5 can acid and alkali resistance, organic solvent, this is also that LDPE layer 5 is arranged on outermost reason.Epoxyn contains various polarity group and the biggest active epoxy radicals, thus the material high with surface activitys such as BOPA film, HDPE film and LDPE films has the strongest bonding force, the cohesive strength of curable epoxide thing is the biggest simultaneously, so its glue-joint strength is the highest；The linear expansion coefficient of curable epoxide thing is the least, and therefore internal stress is little, and little on glue-joint strength impact, the creep of curable epoxide thing is little in addition, so the good stability of the dimension of glue-line, when it is in high aerial, even if the effect of being under pressure, does not also interfere with its viscosity.
It addition, be provided with bubble 51, when this film is in high dummy status in the middle of LDPE layer 5, due to the change of air pressure, bubble can produce pressure to the film of its surrounding, so, it is poor that bubble just can offset partial pressure, has a cushioning effect to pressure experienced inside and outside film, improves the crushing resistance of film.Further, in order to, while ensureing the structural strength of LDPE layer 5, reach best buffering effect, bubble 51 is 60%～63% at the distributive law of LDPE layer 5.Additionally, the thickness of BOPA layer the 1, first glue-line 2, HDPE layer the 3, second glue-line 4 and LDPE layer 5 is than being (4-6): 1:(1.5-2.5): 1:(15-20), showing through lot of experimental data, the composite membrane of this thickness ratio is while ensureing structural strength, and the pressure that can bear is maximum.
Embodiment two
With reference to Fig. 2, the difference with embodiment one is, the outside of LDPE layer 5 is provided with Intermatallic Ti-Al compound coating 6, and the density of Intermatallic Ti-Al compound is low, thus lightweight, it is suitable as the coating 6 on fire balloon surface；Intermatallic Ti-Al compound has the most wear-resisting, corrosion resistance, and structural strength is high；Intermatallic Ti-Al compound is capable of reflecting light line so that light can not enter inside film by direct irradiation, thus prevents film internal gas expanded by heating and strengthen the pressure to film, further increases the crushing resistance of composite membrane.The thickness of BOPA layer the 1, first glue-line 2, HDPE layer the 3, second glue-line 4, LDPE layer 5 and coating 6 is than being (4-6): 1:(1.5-2.5): 1:(15-20): (1.5-2.5), show through great many of experiments, the coating 6 of this ratio can coordinate with BOPA layer the 1, first glue-line 2, HDPE layer the 3, second glue-line 4, LDPE layer 5, reach the optimal coefficient of expansion so that the Stability Analysis of Structures of whole film.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (5)
1. a high-altitude compressive film, it is characterized in that, include BOPA layer (1), the first glue-line (2), HDPE layer (3), the second glue-line (4) and LDPE layer (5) the most successively, wherein, described LDPE layer (5) is internally provided with bubble (51).
High-altitude the most according to claim 1 compressive film, it is characterised in that described bubble (51) is 60%～63% at the distributive law of LDPE layer (5).
High-altitude the most according to claim 1 compressive film, it is characterised in that described first glue-line (2) and the second glue-line (4) are epoxyn.
High-altitude the most according to claim 1 compressive film, it is characterised in that described high-altitude compressive film also includes that LDPE layer (5) coating (6) for reflecting light outward is located in painting.
High-altitude the most according to claim 4 compressive film, it is characterised in that described coating (6) includes Intermatallic Ti-Al compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620302941.5U CN205601304U (en) | 2016-04-12 | 2016-04-12 | High altitude resistance to compression membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620302941.5U CN205601304U (en) | 2016-04-12 | 2016-04-12 | High altitude resistance to compression membrane |
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| CN205601304U true CN205601304U (en) | 2016-09-28 |
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| CN201620302941.5U Active CN205601304U (en) | 2016-04-12 | 2016-04-12 | High altitude resistance to compression membrane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383097A (en) * | 2017-08-07 | 2019-02-26 | 海口未来技术研究院 | Polyethylene film and aerostatics |
| CN109720068A (en) * | 2017-10-27 | 2019-05-07 | 东莞前沿技术研究院 | Polyethylene film and aerostat with insulating layer |
-
2016
- 2016-04-12 CN CN201620302941.5U patent/CN205601304U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383097A (en) * | 2017-08-07 | 2019-02-26 | 海口未来技术研究院 | Polyethylene film and aerostatics |
| CN109720068A (en) * | 2017-10-27 | 2019-05-07 | 东莞前沿技术研究院 | Polyethylene film and aerostat with insulating layer |
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