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A kind of hyperbranched polyimide containing phenanthrene ring structure and its preparation method and application

A technology of polyimide and polyimide film, which is applied in the field of material science, can solve problems such as strong interaction, insolubility and infusibility, and achieve the effects of low condition requirements, improved thermal performance, and good application prospects

Active Publication Date: 2021-01-08
江西有泽新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strong interaction between polyimide molecular chains makes it insoluble and infusible.

Method used

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  • A kind of hyperbranched polyimide containing phenanthrene ring structure and its preparation method and application
  • A kind of hyperbranched polyimide containing phenanthrene ring structure and its preparation method and application
  • A kind of hyperbranched polyimide containing phenanthrene ring structure and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add 0.4362g (2mmol) of pyromellitic dianhydride (PMDA) and 36ml of N,N-dimethylformamide into a three-necked flask, blow in argon, raise the temperature to 30°C, and add the triamine monomer N 2 -(6-aminonaphthalen-2-yl)-N 2 -(10-(6-aminonaphthalen-2-yl)phenanthren-2-yl)naphthalene-2,6-diamine 0.6168g (1mmol) was dissolved in 40ml N,N-dimethylformamide with constant pressure dropping funnel in 1~2h, evenly drop into the three-necked flask, then continue to react for 14h, then add 6ml of acetic anhydride and 2ml of triethylamine, heat up to 45°C and continue to react for 12h, after the reaction is completed, cool to room temperature and discharge in ethanol, filter, wash, Repeat 2 to 3 times, and finally place it in a vacuum drying oven at 80°C for 24 hours to obtain a dark reddish-brown hyperbranched polyimide polymer, whose structural formula is as follows:

[0038]

Embodiment 2

[0040] Add 0.4515g (2.07mmol) of pyromellitic dianhydride (PMDA) and 15ml of N,N-dimethylacetamide into a three-necked flask, blow in argon, raise the temperature to 30°C, and add the triamine monomer N 1 -(4-aminophenyl)-N 1 -(1-(4-aminophenyl)phenanthren-4-yl)benzene-1,4-diamine 0.4666g (1mmol) dissolved in 15ml N,N-dimethylacetamide with a constant pressure dropping funnel in 1 ~ 2h Add it dropwise into a three-necked flask, then continue to react for 16 hours, then add 6.2ml of acetic anhydride and 2.1ml of triethylamine, heat up to 45°C and continue to react for 15 hours, after the reaction is completed, cool to room temperature and discharge in methanol, filter, wash, repeat 2 ~3 times, and finally placed in a vacuum drying oven at 80°C for 24 hours to obtain a yellow hyperbranched polyimide polymer, whose structural formula is as follows:

[0041]

Embodiment 3

[0043]Add 0.4413g (1.5mmol) of 3,3',4,4'--biphenyltetracarboxylic dianhydride (BPDA) and 10ml of N-methylpyrrolidone into a three-necked flask, pass in argon, raise the temperature to 30°C, and Triamine monomer 7,7'-((3-(7-amino-9-oxo-9H-fluoren-2-yl)phenanthren-9-yl)azanediyl)bis(2-amino-9H-fluoren-9- one) 0.7729g (1mmol) was dissolved in 8ml of N-methylpyrrolidone with a constant pressure dropping funnel and evenly added dropwise into the three-necked flask for 1 to 2 hours, then continued to react for 24 hours, then added 12ml of acetic anhydride and 3ml of triethylamine, and raised the temperature to Continue to react at 45°C for 15h. After the reaction is completed, cool to room temperature and discharge the material in ethanol, filter, wash, repeat 2-3 times, and finally place it in a vacuum oven at 80°C for 24h to obtain a brown hyperbranched polyimide polymer. substance, its structural formula is as follows:

[0044]

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Abstract

The invention discloses a hyperbranched polyimide with a phenanthrene ring-containing structure, a preparation method and an application thereof. Such a hyperbranched polyimide material is prepared through the imidization of raw materials, including triamine with the phenanthrene ring-containing structure and various tetracid dihydrides. Such a hyperbranched polyimide has higher glass-transition temperature and heat stability, lower thermal expansivity and excellent solubleness. The synthetic method disclosed by the invention has simple and various processes, so that the method is suitable forindustrial production. The hyperbranched polyimide disclosed by the invention has an excellent application prospect in the field of high temperature resistance and the field of materials, such as photosensitive, optical waveguide and gas permeation separating membranes.

Description

technical field [0001] The invention relates to the field of material science, in particular to a hyperbranched polyimide containing a phenanthrene ring structure and a preparation method thereof. [0002] technical background [0003] Polyimide is a kind of polymer material with excellent heat resistance. Due to its excellent comprehensive performance, it is widely used in various fields such as aviation, aerospace, electrical, machinery, chemical industry, and microelectronics. However, the strong interaction between polyimide molecular chains makes it insoluble and infusible. Hyperbranched polymers have unique advantages such as low viscosity and a large number of terminal functional groups. Introducing hyperbranched structures into polyimide polymer chains to synthesize soluble hyperbranched polyimides (HBPIs) is one of the important means to improve the processing properties of polyimides. [0004] Hyperbranched polyimides (HBPIs) have a series of unique physical and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/10C08G83/00
CPCC08G73/1067C08G73/1075C08G73/1085C08G83/005
Inventor 谭井华刘亦武黄杰陈成亮
Owner 江西有泽新材料科技有限公司
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