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Aromatic hyperbranched polyimide containing anthracene structure and preparation method and application of aromatic hyperbranched polyimide

A technology of polyimide and polyimide film, which is applied in the field of material science, can solve the problems of restricting wide application, large distance between chains, and decreased heat resistance, so as to achieve good application prospects, improve heat resistance, increase Effect of large free volume

Active Publication Date: 2018-12-14
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Compared with linear polyimide materials, the distance between hyperbranched polyimide molecular chains is large, which improves its solubility, but its heat resistance is relatively reduced, which limits its application in aerospace, aerospace vehicle structures or functional parts and Wide application in the field of parts and components of rockets, missiles, etc.

Method used

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  • Aromatic hyperbranched polyimide containing anthracene structure and preparation method and application of aromatic hyperbranched polyimide
  • Aromatic hyperbranched polyimide containing anthracene structure and preparation method and application of aromatic hyperbranched polyimide
  • Aromatic hyperbranched polyimide containing anthracene structure and preparation method and application of aromatic hyperbranched polyimide

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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 1 -(4-aminophenyl)-N 1 -(9-(4-aminophenyl)anthracen-2-yl)benzene-1,4-diamine 0.4666g (1mmol) dissolved in 40ml of N,N-dimethylformamide with a constant pressure dropping funnel in 1 ~ 2h Add it dropwise into a three-necked flask, then continue to react for 13h, 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 methanol, filter, wash, repeat 2-3 Finally, place it in a vacuum drying oven at 80°C for 24 hours to obtain a reddish-brown hyperbranched polyimide polymer, whose structural formula is as follows:

[0038]

Embodiment 2

[0040] Add 0.903g (4.14mmol) of pyromellitic dianhydride (PMDA) and 2ml 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 -(10-(4-aminophenyl)anthracen-9-yl)benzene-1,4-diamine 0.9332g (2mmol) dissolved in 3ml 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 12.4ml of acetic anhydride and 4.2ml of triethylamine, heat up to 45°C and continue to react for 13 hours, after the reaction is completed, cool to room temperature and discharge in ethanol, filter, wash, repeat 2 ~3 times, and finally placed in a vacuum drying oven at 80°C for 24 hours to obtain a light 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 N 2 -(9-(4-aminophenyl)anthracen-2-yl)-N 2 -(5-aminothiophen-2-yl)thiophene-2,5-diamine 0.4786g (1mmol) dissolved in 8ml of N-methylpyrrolidone was added dropwise into the three-necked flask with a constant pressure dropping funnel in 1~2h, and then continued to react for 24h , then add 12ml of acetic anhydride and 3ml of triethylamine, raise the temperature to 45°C and continue the reaction for 24h, after the reaction is completed, cool to room temperature and discharge the material in methanol, filter, wash, repeat 2-3 times, and finally place in a vacuum oven at 80°C Dry 24h in middle, obtain brown hyperbranched polyimide polymer, its structural formula is as follows:

[0044]

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Abstract

The invention discloses aromatic hyperbranched polyimide containing an anthracene structure and a preparation method and application of the aromatic hyperbranched polyimide. The hyperbranched polyimide materials are produced through imidization by using triamine containing an anthracene ring structure and multiple tetracid dihydrides as raw materials. The hyperbranched polyimide has high glass transition temperature, thermal stability, good optical properties and good solubility. The synthesis method has a simple and diverse process, and is therefore suitable for industrial production. The hyperbranched polyimide has good application prospects in high temperature-resistant fields, photosensitive materials, optical waveguide materials, gas permeation separation membrane and other material fields.

Description

technical field [0001] The invention relates to the field of material science, in particular to an aromatic hyperbranched polyimide containing anthracene structure and a preparation method thereof. technical background [0002] Polyimide has attracted extensive attention because of its excellent thermal stability, good electrical properties, and excellent mechanical properties. However, the strong interaction between polyimide molecular chains makes it insoluble and infusible. In order to improve the processability of polyimide, various beneficial attempts have been made. [0003] 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. Hyperbranched polyimide has a series of unique physical and chemical propert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10
CPCC08G73/1003C08G73/1039C08G73/1064C08G73/1067
Inventor 刘亦武沈俊逸谭井华唐傲
Owner HUNAN UNIV OF TECH
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