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Functional multi-layer co-extruded fluororesin composite film and preparation method thereof

A composite film, multi-layer co-extrusion technology, applied in the field of airship skin, can solve the problems of complex process and reduced functionality, and achieve the effects of reducing processing procedures, improving performance and reducing costs

Inactive Publication Date: 2022-04-05
天津新兴东方临近空间航天科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the object of the present invention is to provide functional multilayer co-extrusion fluororesin composite film and preparation method, to solve the problem of process complexity and functional decline

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  • Functional multi-layer co-extruded fluororesin composite film and preparation method thereof

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Embodiment 1

[0033] Functional multilayer co-extruded fluororesin composite film, with a multilayer structure, including a first fluororesin layer 1, a first adhesive layer 2, a high barrier layer 3, a second adhesive layer 4, and a second fluororesin layer 5 ;

[0034] The first fluororesin layer 1 and the second fluororesin layer 5 are all made of fluororesin, ultraviolet shielding agent, antioxidant, antistatic agent and crosslinking agent, and the first adhesive layer 2 and the second adhesive layer 4 are made of nylon Composition, high barrier layer 3 is made of barrier material, modifier, stabilizer, plasticizer, filler;

[0035] The multi-layer structure is prepared by a multi-layer co-extrusion casting composite process.

[0036] Further, the fluororesin or modified fluororesin is one or a mixture of polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), and ethylene-tetrafluoroethylene copolymer (ETFE).

[0037] Further, the nylon is one or a mixture of PA6, PA66, PA6 / 66, PA6...

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Abstract

The invention discloses a functional multi-layer co-extrusion fluororesin composite film and a preparation method, and belongs to the field of airship skin, the functional multi-layer co-extrusion fluororesin composite film has a multi-layer structure, and comprises a first fluororesin layer, a first bonding layer, a high barrier layer, a second bonding layer and a second fluororesin layer. The protective layer and the barrier layer are integrally realized, so that the functionality of the fluororesin composite film is enhanced, the surface density of a skin material is reduced, further optimization is realized while the functions of the protective layer and the barrier layer of the airship skin are ensured, and the fluororesin composite film has the advantages of low surface density, high strength, high barrier, environment (high and low temperature, ultraviolet and the like) resistance and the like; compared with traditional airship skin preparation, compounding procedures are reduced, the process control difficulty is lowered, compared with traditional compounding of a protective layer and a blocking layer, the fluororesin composite film is more stable in structure, higher in interlayer bonding capacity and higher in reliability. The multi-layer co-extrusion fluororesin composite film fills the blank of a multi-layer co-extrusion fluororesin film casting process (two-way stretching process) in China.

Description

technical field [0001] The invention relates to the field of airship skins, more specifically, to a functional multilayer co-extruded fluororesin composite film and a preparation method thereof. Background technique [0002] Stratospheric airships mostly adopt an overpressure capsule structure. Under working conditions, the capsule must withstand harsh environmental influences such as superheat and overpressure, solar radiation, high and low temperature alternating, and maintain good gas barrier performance. Compared with the international advanced level, the existing domestic overpressure capsule materials still have a large gap in terms of gas barrier properties, material density, material strength and other comprehensive properties. Research on low-area density and high-strength overpressure capsule gas barrier membranes, It is the core and key to research and prepare high-performance overpressure capsule materials, and it is of great significance to improve the airtightn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B27/32B32B27/34B32B27/18B32B27/08B32B27/06B32B7/12B29C48/18B29C41/32B29C55/12B29C59/10
Inventor 不公告发明人
Owner 天津新兴东方临近空间航天科技有限公司
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