Polyimide film and preparation method thereof, flexible display panel
A technology of polyimide film and polyimide precursor, which is applied in the field of materials, can solve problems such as difficult to balance mechanical properties, thermal properties and optical properties, and achieve the effect of excellent mechanical properties and optical properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0075] The method for preparing a polyimide film of the present application uses a diamine containing a porphine nickel (II) structure as a raw material to prepare a polyimide film. When porphine nickel (II) is catalytically hydrogenated in a general solvent, porphine nickel (II) is preferentially hydrogenated, but the benzene ring is preferentially hydrogenated in trifluoroacetic acid. In this application, a nitrating agent is introduced into trifluoroacetic acid to synthesize nitrated porphine nickel (II), and then a hydrazine salt is used to prepare a diamine containing porphine nickel (II), and then a halogen-containing dianhydride structure is introduced to generate a polyimide precursor , and the polyimide precursor is cross-linked and cured at high temperature, and finally a polyimide film material with excellent heat resistance, mechanical properties and optical properties is obtained.
[0076] The present application also provides a polyimide film, which can be prepar...
Embodiment 1
[0090] Embodiment 1 includes the following steps:
[0091] 1.1 Preparation of nickel (II) dinitroporphine
[0092] The nickel porphine(II) used in Example 1 is 5,10,15,20-tetramethyl-21H,23H-nickel porphine(II), which can be purchased commercially.
[0093] Under the protection of argon, 0.3-1.1 mol of 5,10,15,20-tetramethyl-21H,23H-porphine nickel(II) was added to the reaction vessel, and then trifluorotrifluorocarbonate with a volume of 12 mL-50 mL was added. The acetic acid solvent is dissolved, stirring is continued, and 0.1-2.5 mol of sodium nitrite that has been completely dissolved in 2-5 mL of solvent is gradually added dropwise to the solution. After reacting at room temperature for 12-30 min, stop stirring, add 100 mL of deionized water to the reaction solution, stir well and let stand, then use dichloromethane for extraction, collect the organic layer, and rotate to obtain the crude product. Subsequent rinsing and rotary evaporation with a mixed solution of dichlo...
Embodiment 2
[0113] Embodiment 2 includes the following steps:
[0114] 2.1 Preparation of nickel (II) dinitroporphine
[0115] The nickel porphine(II) used in Example 2 is 5,10,15,20-tetramethyl-21H,23H-nickel porphine(II), which can be purchased commercially.
[0116] Under the protection of argon, 0.3-1.1 mol of 5,10,15,20-tetramethyl-21H,23H-porphine nickel(II) was added to the reaction vessel, and then trifluorotrifluorocarbonate with a volume of 12 mL-50 mL was added. The acetic acid solvent is dissolved, stirring is continued, and 0.1-2.5 mol of sodium nitrite is completely dissolved by adding 2-5 mL to the solution at one time. After reacting at room temperature for 12-30 min, stop stirring, add 100 mL of deionized water to the reaction solution, stir well and let stand, then use dichloromethane for extraction, collect the organic layer, and rotate to obtain the crude product. Subsequent rinsing and rotary evaporation with a mixed solution of dichloromethane / petroleum ether in a ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
| elongation at break | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More