Reinforced polyvinyl fluoride composite film and preparation method thereof

A technology of polyvinyl fluoride and composite film, applied in the direction of chemical instruments and methods, synthetic resin layered products, lamination, etc., to achieve the effects of wide application range, excellent weather resistance, and high strength of fabrics

Pending Publication Date: 2021-06-18
ZHEJIANG LANTIAN ENVIRONMENTAL PROTECTION HI TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the fact that polyvinyl fluoride films in the prior art cannot meet the requirements of light weight and high strength, the present invention provides a reinforced polyvinyl fluoride (PVF) composite film, which can overcome the influence of biaxial stretching process on the performance of polyvinyl fluoride films, so that Excellent properties of light weight and high tensile strength

Method used

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  • Reinforced polyvinyl fluoride composite film and preparation method thereof
  • Reinforced polyvinyl fluoride composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A reinforced polyvinyl fluoride composite film, using a steel belt as a carrier, disperses 100 parts of polyvinyl fluoride resin in 200 parts of γ-butyrolactone at high speed, and the prepared polyvinyl fluoride resin dispersion is extruded by twin-screw Machine, filter, melt metering pump, casting mold, casting on the steel belt, after devolatilization (release latent solvent) and stripping, a PVF casting film with a thickness of 15 μm is obtained, and the surface tension is 36 dynes. The PVF cast film is subjected to corona treatment to obtain the PVF cast film. The obtained PVF casting film has a thickness of 15 μm, a surface tension of 45 dynes, a tensile strength of 30.7 MPa, and an elongation at break of 187.4%.

[0035] Melt the SIS hot melt adhesive in advance, and apply a layer of 8μm hot melt adhesive on the PVF film through the casting mold, and then coat it with nylon mesh cloth (1# mesh cloth) and another layer of hot melt adhesive The PVF film is hot-comp...

Embodiment 2

[0037] A reinforced polyvinyl fluoride composite film, using a steel belt as a carrier, disperses 100 parts of polyvinyl fluoride resin in 160 parts of γ-butyrolactone at high speed, and the prepared polyvinyl fluoride resin dispersion is pre-extruded by a single screw Extrude the machine for granulation, then pass through the twin-screw extruder, filter, melt metering pump, and casting die, and then cast on the steel belt. After devolatilization (removal of latent solvent) and stripping, a 20μm thick PVF casting is obtained. The film has a surface tension of 36 dynes, and the PVF cast film is further subjected to corona treatment to obtain a PVF cast film. The prepared PVF casting film had a thickness of 20 μm, a surface tension of 50 dynes, a tensile strength of 38.5 MPa, and an elongation at break of 170.2%.

[0038] Melt the polyurethane hot melt adhesive in advance, and apply a layer of 10μm hot melt adhesive on the PVF film through a casting mold, and then coat it with n...

Embodiment 3

[0040] A reinforced polyvinyl fluoride composite film, which is prepared by dispersing 100 parts of polyvinyl fluoride resin in 230 parts of N,N-dimethylformamide (DMF) at a high speed, using PET film coated with silicone oil as a carrier. The polyvinyl fluoride resin dispersion is cast on a PET film coated with silicone oil through a twin-screw extruder, a filter, a melt metering pump, and a casting die, and after devolatilization (removal of latent solvent) and stripping, 10 μm PVF is obtained The casting film is further subjected to corona treatment on the PVF casting film to obtain the PVF casting film. The obtained PVF casting film has a thickness of 10 μm, a surface tension of 55 dynes, a tensile strength of 33.6 MPa, and an elongation at break of 225.8%.

[0041] Melt the polyamide hot melt adhesive in advance, and apply a layer of 15μm hot melt adhesive on the PVF film through a casting mold, and then coat it with nylon mesh cloth (3# mesh cloth) and another layer of h...

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Abstract

The invention provides a reinforced polyvinyl fluoride composite film. The reinforced polyvinyl fluoride composite film is formed by sequentially compounding a polyvinyl fluoride film, a hot melt adhesive, reinforcement gridding cloth, a hot melt adhesive and a polyvinyl fluoride film. The invention also provides a preparation method of the composite film. The composite film provided by the invention has excellent properties of light weight and high tensile strength, and is especially suitable for aircraft interiors.

Description

technical field [0001] The invention belongs to the technical field of fluorine-containing composite films, and in particular relates to a polyvinyl fluoride composite film and a preparation method thereof. Background technique [0002] Polyvinyl fluoride (PVF) film has excellent properties, such as: good flame retardancy, meeting strict flame spread, smoke concentration and toxicity requirements; excellent formability, plasticity, easy processing; weather resistance, chemical corrosion resistance, Resistant to abrasion and tear, cleaning equipment and solvents; wide choice of colors and textures. Therefore, it was first used in the interior of Boeing 727 aircraft in 1963. [0003] After more than half a century of development, aircraft have higher and higher requirements for interior materials, which require high strength, weather resistance, flame retardancy, low smoke, low heat release and easy cleaning. Therefore, the prior art has made the following efforts. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B7/12B32B37/12B32B37/10B32B37/06B32B27/12B32B27/02B32B27/34
CPCB32B27/304B32B7/12B32B37/12B32B37/10B32B37/06B32B5/02B32B27/12B32B2262/0261B32B2307/50
Inventor 张艳中陈思献刘伟常怀云魏一帆
Owner ZHEJIANG LANTIAN ENVIRONMENTAL PROTECTION HI TECH
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