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Thin film material and preparation method thereof

A film material and polymer technology, which is applied in the field of film materials and their preparation, can solve the problems that the heat resistance, mechanical properties and optical properties of polymer film materials are difficult to satisfy at the same time, and achieve the effect of improving heat resistance.

Active Publication Date: 2020-04-28
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The application provides a film material and its preparation method, which is used to solve the problem that the heat resistance, mechanical properties and optical properties of the existing polymer film materials are difficult to meet the requirements of the flexible substrate material used for the display panel at the same time question

Method used

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  • Thin film material and preparation method thereof
  • Thin film material and preparation method thereof
  • Thin film material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0088] See figure 1 , The preparation method of the thin film material includes:

[0089] S1. In the first container, compound A and the first reactant react to form compound B.

[0090] S2. In the second container, the compound B and the second reactant react to form compound C.

[0091] S3. In the third container, the compound C and the third reactant react to form a polymer D.

[0092] S4. In the fourth container, the polymer D is reacted to obtain a second mixture including polymer F or polymer H.

[0093] S5. The solution including the polymer F or the solution including the polymer H forms the polymer F or the polymer H on the substrate.

[0094] Wherein, the general structural formula of the compound A is:

[0095]

[0096] The general structural formula of the polymer F is:

[0097]

[0098] The general structural formula of the polymer H is:

[0099]

[0100] Where R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 One of hydrogen atom or aliphatic alkane group, R 9 It is a fluorine-con...

Embodiment 1

[0192] S1. In the first container, compound A and the first reactant react to form compound B.

[0193] In this embodiment, step S1 includes:

[0194] S11. A first container is provided, and the first container includes 12 mL-50 mL trifluoroacetic acid in which 0.3-1.1 mol of the compound A is dissolved.

[0195] In this embodiment, the compound A may be:

[0196]

[0197] S12. Add 2 to 5 mL of trifluoroacetic acid solution containing 0.1 to 2.5 mol of sodium nitrite dropwise to the first container, and at 25° C. for 12 to 30 minutes to form compound B1.

[0198] S13. Add 100 ml of deionized water to the first container, stir well and let stand still.

[0199] S14. Add dichloromethane to the first container, extract, collect the organic layer and rotatably evaporate to obtain a first crude product including the compound B1 or the compound B2.

[0200] S15. The first crude product is rinsed with a mixed solution of dichloromethane and petroleum ether in a volume ratio of 5:3 and then rotar...

Embodiment 2

[0237] This embodiment is the same as or similar to the first embodiment, and the difference lies in:

[0238] In this embodiment, step S12 includes:

[0239] Adding 2-5 mL trifluoroacetic acid solution containing 0.1-2.5 mol sodium nitrite into the first container at once, and forming compound B2 at 25° C. for 12-30 minutes.

[0240] The structural formula of the compound B2 is:

[0241]

[0242] In this embodiment, the structural formula of the compound C is:

[0243]

[0244] In this embodiment, the structural formula of the compound D is:

[0245]

[0246] In this embodiment, the structural formula of the compound H is:

[0247]

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Abstract

The invention provides a thin film material and a preparation method thereof. The preparation method of the thin film material comprises the following steps: reacting a compound A with a first reactant in a first container to form a compound B; reacting the compound B with a second reactant in a second container to form a compound C; reacting the compound C with a third reactant in a third container to form a polymer D; reacting the polymer D in a fourth container to obtain a second mixture comprising a polymer F or comprising a polymer H; and a solution comprising the polymer F or a solutioncomprising the polymer H forms a polymer F or a polymer H on a substrate. The polyimide thin film material with the pyridine ring as the main chain structure is prepared through the novel preparationmethod of the thin film material, and the heat resistance, the mechanical property and the optical property of the polyimide thin film material are effectively improved.

Description

Technical field [0001] This application relates to the field of display technology, in particular to a thin film material and a preparation method thereof. Background technique [0002] OLED, or Organic Light-Emitting Diode, has the characteristics of self-luminescence, high brightness, wide viewing angle, high contrast, flexibility, and low energy consumption. Therefore, OLED display panels, especially flexible OLED display panels, have received extensive attention . [0003] The heat resistance, mechanical properties and optical properties of existing high molecular polymer film materials used as substrate materials for flexible OLED display panels are difficult to meet the requirements as substrate materials at the same time. [0004] Therefore, there is an urgent need for a new thin film material and a method for preparing the thin film material to solve the above technical problems. Summary of the invention [0005] This application provides a thin film material and a preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08J5/18C08L79/08
CPCC08G73/1085C08J5/18C08J2379/08
Inventor 汪亚民
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD