Nano-composite film with infrared absorption function and manufacturing method and application thereof

An infrared absorption and nanocomposite technology, applied in textiles and papermaking, fiber types, fiber processing, etc., can solve the problems of unresearched infrared absorption properties, such as the film-forming properties of spinning dope, and achieve a wide infrared absorption band and strong capillary force. , the effect of high infrared absorption rate

Inactive Publication Date: 2019-10-11
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, CN105369380A discloses a phase-change temperature-regulating fiber, which absorbs and blends porous adsorption materials, polymer phase-change materials, and substances with far-infrared absorption functions, and then mixes them with cellulose ionic liquids to prepare spinning stock solutions. Solvent method Preparation of phase-change temperature-regulating fibers, the phase-change temperature-regulating fibers absorb both far-infrared light and visible light, but did not study the infrared absorption performance in the 3μm-15μm infrared band and the film-forming properties of spinning dope

Method used

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  • Nano-composite film with infrared absorption function and manufacturing method and application thereof
  • Nano-composite film with infrared absorption function and manufacturing method and application thereof
  • Nano-composite film with infrared absorption function and manufacturing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Prepare a polyethylene glycol aqueous solution with a mass fraction of 30%, with a thickness of 200 μm, a porosity of 95%, and a density of 29 mg / cm 3 1. The aramid nanofiber porous film with a thermal conductivity of 0.036W / m·K is placed in an aqueous solution of polyethylene glycol, taken out after standing for 12 hours, the excess aqueous solution of polyethylene glycol on the surface is removed, and dried under normal pressure to obtain functional nanocomposite films. Figure 2a The SEM photo of the nanocomposite film with infrared absorption function obtained in this embodiment is shown, and other parameters are shown in Table 1.

Embodiment 2

[0046] Prepare an aqueous solution of cetyl alcohol with a mass fraction of 50%, with a thickness of 500 μm, a porosity of 95%, and a density of 29 mg / cm 3 1. The aramid nanofiber porous film with a thermal conductivity of 0.036W / m·K is placed in an aqueous solution of cetyl alcohol, taken out after standing for 12 hours, the excess aqueous solution of cetyl alcohol on the surface is removed, and dried under normal pressure to obtain a film with infrared absorption function. nanocomposite films. Figure 2b The SEM photo of the nanocomposite film with infrared absorption function obtained in this embodiment is shown, and other parameters are shown in Table 1.

Embodiment 3

[0048] Heat stearic acid in an oven until it melts completely, the thickness is 1000μm, the porosity is 95%, and the density is 29mg / cm 3 , The aramid nanofiber porous film with a thermal conductivity of 0.036W / m·K is immersed in molten stearic acid, and placed in a vacuum oven at 80°C for 12 hours, then taken out, placed on filter paper, and then put back In a vacuum oven at 80°C, filter paper absorbs excess stearic acid on the surface of the film, takes it out of the oven after 6 hours, and obtains a nanocomposite film with infrared absorption function after cooling at room temperature. Figure 2c The SEM photo of the nanocomposite film with infrared absorption function obtained in this embodiment is shown, and other parameters are shown in Table 1.

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Abstract

The invention discloses a nano-composite film with an infrared absorption function and a manufacturing method and application thereof. The nano-composite film with the infrared absorption function comprises a porous film and an infrared absorption substance; the porous film is of a communicated three-dimensional mesh structure formed by lap joint of nano-fibers, and has the high capillary acting force, and the infrared absorption substance is at least loaded inside the three-dimensional mesh structure of the porous film. The nano-composite film with the infrared absorption function has the wide infrared absorption waveband and the high infrared absorption rate, meanwhile, the cost is low, the preparation technology is simple, large-scale production is easily achieved, the film can be directly used for light filtering, heat insulation and infrared radiation resistance, the nano-composite film can be stacked with the porous film to form a combined structure, the nano-composite film is used for thermal management or infrared detection resistance, and the application prospect is quite wide.

Description

technical field [0001] The invention relates to an infrared absorbing thin film, in particular to a nanocomposite thin film with infrared absorbing function and its manufacturing method and application, belonging to the technical field of new nanometer materials. Background technique [0002] Infrared absorbing materials refer to special functional materials that have strong absorption for a certain band or several bands of infrared light. It can be a single compound, or it can be composed of two or more materials. Infrared absorbing materials can be used to absorb the infrared radiation of the target to resist infrared reconnaissance, and can also shield the light source in the infrared region or prevent heat loss to play the role of heat insulation. [0003] Traditional infrared absorbing materials are mostly powders, such as tungsten bronze, vanadium oxide, etc. The preparation process of such materials is complicated, and it is difficult to process them into large-scale...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/53D06M13/144D06M13/188D06M13/02D06M13/328D06M101/36D06M101/06
CPCD06M13/02D06M13/144D06M13/188D06M13/328D06M15/53D06M2101/06D06M2101/36
Inventor 张学同吕婧
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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