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Self assembly laminated infrared film material and preparation method of self assembly laminated infrared film material

A self-assembled film and infrared film technology, which is applied in chemical instruments and methods, oxide/hydroxide preparation, and other chemical processes, can solve the problems of difficult control of film thickness, disordered internal structure, and large surface roughness. , to achieve the effect of small surface roughness, orderly internal structure and good light transmission

Active Publication Date: 2014-06-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN201210060305.2 discloses a fluorine-containing polyimide infrared low-emissivity film material. Although it has a low infrared emissivity at 8-14 μm, the thickness of the film is not easy to control, and because it is formed by a polymer The thin film, the surface roughness of the material is relatively large, the internal structure is relatively disordered and the light transmission is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] a) According to the molar ratio of DL-lactic acid to Fe powder is 8:1, add 0.5 mol / L DL-lactic acid aqueous solution and Fe powder metal successively into the reactor, react at room temperature for 10 hours, 2 Under atmosphere, add 1.2mL of 30wt% H to the above reaction solution per gram of Fe powder 2 o 2 Aqueous solution oxidation reaction for 0.6h, according to the molar ratio of Co powder and Fe powder is 2:1, then add Co powder and react at room temperature for 10h, after the reaction, use 8mol / L NaOH aqueous solution to adjust the pH to 9.5, hydrothermal crystallization at 80°C for 48h, cool , filtered, washed 4 times with deionized water, and dispersed with deionized water according to the molar ratio of Fe powder and deionized water as 1:1000 to obtain a suspension of LDHs intercalated with DL-lactate radicals, which was left to stand at 30°C for 48h , to obtain LDHs nanosheet aqueous solution.

[0019] b) Add 20mL of alkyd mixed solution per square centimeter...

Embodiment 2

[0023] a) According to the molar ratio of oxalic acid and Co powder is 5:1, add 0.2mol / L oxalic acid aqueous solution and Co powder into the reaction kettle successively, and react at room temperature for 4 hours, 2 Under atmosphere, add 0.5mL of 30wt% H to the above reaction solution per gram of Co powder 2 o 2Aqueous solution oxidation reaction for 0.8h, according to the molar ratio of Mn powder and Co powder is 2:1, then add Mn powder and react at room temperature for 4h, after the reaction, use 8mol / L KOH aqueous solution to adjust the pH to 10, hydrothermal crystallization at 90°C for 72h, cool , filtered, washed 6 times with deionized water, and dispersed with deionized water according to the molar ratio of Co powder and deionized water as 1:2500 to obtain a suspension of LDHs intercalated with oxalate radicals, which was left standing for 36 hours at 25°C to obtain Aqueous solution of LDHs nanosheets.

[0024] b) Add 20mL of alkyd mixed solution per square centimeter ...

Embodiment 3

[0028] a) According to the molar ratio of benzoic acid and (Co powder + Fe powder) is 10:1, wherein the molar ratio of Co powder and Fe powder is 1:4, 1.0mol / L aqueous solution of benzoic acid and (Co powder + Fe powder) Powder) was successively added to the reactor, and after 8 hours of reaction at room temperature, in N 2 Under the atmosphere, add 5.0mL of 30wt% H to the above reaction solution per gram 2 o 2 Oxidation reaction of aqueous solution for 0.5h, according to the molar ratio of Mg powder and (Co powder + Fe powder) metal is 2:1, then add Mg powder and react at room temperature for 8h, after the reaction, use 8mol / L NaOH aqueous solution to adjust the pH to 10, hydrothermal at 75°C Crystallize for 60 hours, cool, filter, and wash with deionized water for 5 times. According to the molar ratio of (Co powder + Fe powder) to deionized water as 1:3000, disperse with deionized water to obtain a suspension of LDHs intercalated with benzoate. The turbid solution was left...

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Abstract

The invention aims at providing a self assembly laminated infrared film material and a preparation method of the self assembly laminated infrared film material. The material is formed by using infrared absorption material LDHs (layered double hydroxides) nanometer sheets and single-layer oxidized graphene as basic elements through alternate layer-by-layer self assembly, the layer structure with the LDHs nanometer sheet / single-layer oxidized graphene sequence laminated layer is adopted, the layer number is 2 to 40, the material film thickness is 2 to 200nm, the wave band is 8 to 14mum at 25 DEG C, and the infrared emissivity of the material is 0.300 to 0.600. Layer plate metal ions of the LDHs nanometer sheets consist of metal ions M1 and metal ions M2, wherein the mol ratio of the metal ions M1 to the metal ions M2 is 2:1, the metal ions M1 are one kind of ions or the combination of many kinds of ions from Mg<2+>, Co<2+>, Mn<2+> and Zn<2+>, and the metal ions M2 are one kind of ions or the combination of two kinds of ions from Fe<3+> and Co<3+>.

Description

technical field [0001] The invention relates to a self-assembled laminated infrared film material and a preparation method thereof, which belongs to the preparation category of composite film materials and is suitable for preparing infrared low emissivity film materials. Background technique [0002] The development of infrared low emissivity materials has experienced the development from single component to composite material, from powder coating to film material. With the development of the film industry, materials with low infrared emissivity are moving closer to nano-membrane materials. emissivity. Chinese patent CN201210060305.2 discloses a fluorine-containing polyimide infrared low emissivity film material. Although it has a low infrared emissivity at 8-14 μm, the thickness of the film is not easy to control, and because it is formed by a polymer The thin film, the surface roughness of the material is relatively large, the internal structure is relatively disordered ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00C01B13/14
Inventor 周钰明朱云霞张涛王泳娟卜小海梅震宇张牧阳
Owner SOUTHEAST UNIV
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