Single-layer low-permeability inorganic nano-heat insulation film with high weather resistance and high definition and preparation method thereof

An inorganic nanometer, high-definition technology, applied in chemical instruments and methods, coatings, layered products, etc., can solve the problems of high production cost, low infrared blocking rate, low definition, etc., and achieves UV resistance and high temperature resistance. Stability, low visible light transmittance, the effect of ensuring weather stability

Active Publication Date: 2021-12-21
SUZHOU GENER NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent document CN106965518A discloses a thermal insulation film compounded with carbon black and organic pigments, which has the advantage of good weather resistance. This technology completes product production through the compounding of two transparent base films and three coating processes. Production The cost is high. In addition, because organic pigments are difficult to disperse and stabilize, it is difficult to maintain the clarity of the thermal insulation film continuously and stably in mass production
Chinese patent document CN104789110A discloses a single-layer heat-insulating film prepared from a non-solvent-type UV-curable coating combined with carbon black and organic pigments. Although the problem of weather resistance is solved, the infrared rejection rate of the film is not high. The clarity is not high, that is, the haze is ≈2%, the energy demand for UV curing is high, and it is difficult to ensure that the base film does not deform, etc.

Method used

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  • Single-layer low-permeability inorganic nano-heat insulation film with high weather resistance and high definition and preparation method thereof
  • Single-layer low-permeability inorganic nano-heat insulation film with high weather resistance and high definition and preparation method thereof
  • Single-layer low-permeability inorganic nano-heat insulation film with high weather resistance and high definition and preparation method thereof

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preparation example Construction

[0049] The preparation method of the above-mentioned single-layer low-permeability inorganic nano-heat insulation film specifically includes the following steps:

[0050] S1, release film selection: select a 23μm thick PET film, one side of which is coated with release silicone oil, and its peel strength is 15-30 g / inch;

[0051] S2, base film selection: select a piece of transparent PET which has been precoated and corona treated on both sides, and the haze is less than 1% as the base film, and the precoated precoat is PU precoat;

[0052] S3, preparation of inorganic nano-pigment slurry: first mix and stir the dispersant and solvent in the pre-mixing tank, then pass it into the grinding chamber of the ball mill for grinding, and gradually add silicon nitride titanium or carbon black, and obtain nitrided pigments after grinding. Silicon titanium slurry or carbon black slurry;

[0053] S4, preparation of UV-curable coating: first add the solvent into the mixing tank, then add...

Embodiment 1

[0058] Release film selection: Select a silicone oil release film with a release force of 20 g / inch.

[0059] Base film selection: select a 38 μm thick PET base film with a haze of less than 1%, and its longitudinal and transverse thermal shrinkage rates are 1.2% and 0.2% respectively. The base film is corona treated on one side and pre-coated with PU on the other side.

[0060]Preparation of silicon nitride titanium slurry: Weigh 10 parts of silicon nitride titanium with a particle size of 20nm (the doping ratio of silicon is 5%), 2 parts of a small molecule dispersant with a molecular weight of 800, and a polymer dispersion with a molecular weight of 5000. 7 parts of dispersant and 81 parts of ethyl acetate, first mix the dispersant and solvent in the premix tank for 15 minutes, then gradually add silicon nitride titanium, stir at 500RPM for 30 minutes, and finally circulate into 8 Grinding in the grinding chamber of a ball mill, with a linear speed of 10 m / s, after 36 hour...

Embodiment 2

[0067] Preparation of UV-curable coating: Weigh 6.55 parts of silicon nitride titanium slurry, 6.55 parts of carbon black slurry, 32.32 parts of hexafunctional aliphatic polyurethane acrylic resin with a molecular weight of 1000, silicon-modified copolymer flow 0.42 parts of leveling agent, 0.75 parts of 2-hydroxy-2-methyl-1-phenylacetone, 0.49 parts of 2-hydroxy-2-methyl-1-phenylacetone, 0.49 parts of phenyl bis(2,4,6-tri 0.46 parts of methylbenzoyl)phosphine oxide and 52.46 parts of ethyl acetate. First add the solvent to the mixing tank, then add silicon nitride titanium slurry and carbon black slurry respectively, stir at 300RPM for 5 minutes, then add the rest of the materials, stir at 500RPM for 30 minutes to obtain the required UV Light-curing coatings.

[0068] In Example 2, except for the UV-curable coating, other coatings and materials are the same as in Example 1. Sample 2 was prepared by the same method as described in Example 1. The carbon black content of samp...

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Abstract

The invention discloses a single-layer low-permeability inorganic nano heat insulation film with high weather resistance and high definition and its preparation method. A layered structure composed of treated PET base film, installation adhesive layer coated with installation adhesive coating and release film; UV curing coating includes inorganic pigment slurry, UV curing resin, photosensitizer and solvent, etc.; inorganic pigment slurry In addition to dispersant and solvent, the material also includes at least one inorganic pigment with low ultraviolet absorption rate, and the installation glue coating can also have inorganic pigment slurry in addition to ultraviolet absorber, pressure-sensitive adhesive and solvent. UV-curable resins, pressure-sensitive adhesives, and solvents must be compatible with dispersants. In the present invention, through the combination of low ultraviolet absorption inorganic pigments, dispersants and photosensitizers, a single-layer thermal insulation film with high weather resistance and high definition is realized by UV curing and film formation, and the thermal insulation film is completed through two coating processes. The production of hot film greatly reduces the production cost.

Description

technical field [0001] The invention relates to a single-layer low-permeability inorganic nano heat insulation film with high weather resistance and high definition and a preparation method thereof, belonging to the technical field of heat insulation window films. Background technique [0002] The low-permeability thermal insulation film has the effect of blocking part of the visible light and infrared energy in sunlight at the same time, and can be used in automobile and building glass to improve comfort and reduce cooling energy consumption. [0003] Generally speaking, there are two structures of low-permeability thermal insulation films: single-layer base film and double-layer base film, which are realized through two coating processes and three coating processes respectively. In the existing market products, there are two kinds of single-layer base films, one is to form a dye primary color film by implanting dyes into the PET base film, and the other is to form a metal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06C09J7/25C09J7/38C09D175/14C09D7/61C09D7/63C09J133/00C09J11/06C09J11/04C08J7/04C08L67/02
CPCC09J7/255C09J7/385C09J133/00C09J11/06C09J11/04C09D175/14C09D7/61C09D7/63C08J2367/02C08J2475/14C09J2467/006C08K2201/011C09J2301/122C09J2301/302C08K3/34C08K3/04C08K5/3492
Inventor 方官久
Owner SUZHOU GENER NANO TECH
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