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Polyamide film with electrochromism performance, and preparation method and application thereof

A polyamide film, electrochromic technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, chemical recycling, etc., can solve the problems of poor thermal stability, low solubility of polyamide, difficult to process into film, etc. , good reversibility, good high temperature performance effect

Inactive Publication Date: 2015-08-19
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low solubility of existing polyamides in organic solvents, difficulty in processing into films and poor thermal stability, and provide a polyamide film with electrochromic properties and its preparation method and application

Method used

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  • Polyamide film with electrochromism performance, and preparation method and application thereof
  • Polyamide film with electrochromism performance, and preparation method and application thereof
  • Polyamide film with electrochromism performance, and preparation method and application thereof

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specific Embodiment approach 1

[0056] Specific implementation mode one: the present implementation mode is a polyamide film with electrochromic properties. The structural formula is:

[0057] Wherein, the R is The value of n is 1≤n≤100, and n is an integer.

[0058] The advantage of this implementation mode:

[0059] 1. The polyamide film with electrochromic properties prepared in this embodiment is dissolved in dimethyl sulfoxide, and can be coated on conductive glass; the polyamide film with electrochromic properties prepared in this embodiment is used as The working electrode, the saturated calomel electrode is the reference electrode, the platinum wire is the counter electrode, and the electrolyte is an electrochromic device composed of lithium perchlorate acetonitrile solution;

[0060] 2. The polyamide film with electrochromic properties prepared in this embodiment loses 5% of its weight at a temperature of 340°C to 410°C, 10% at a temperature of 350°C to 450°C, and 32% at a temperature of 700°...

specific Embodiment approach 2

[0064] Specific embodiment two: this embodiment is a kind of preparation method of the polyamide film with electrochromic performance is prepared according to the following steps:

[0065] 1. Synthesis of N,N'-bis(α-naphthyl)-N,N'-bis(4-isocyanatophenyl)biphenyl monomer:

[0066] 1. Dissolve N,N-bis(1-naphthyl)-4,4-biphenyldiamine in dimethyl sulfoxide under nitrogen atmosphere, then add p-fluoronitrobenzene and sodium hydride, and then React at ℃ for 24h-30h to obtain a reaction solution; add the reaction solution to cold water, then perform suction filtration, discard the filtrate, and obtain a yellow precipitate; use acetonitrile to wash the yellow precipitate for 2 to 4 times, and then in the temperature Dry at 30°C to 40°C for 8 to 15 hours to obtain reaction product A; the reaction product of N,N-bis(1-naphthyl)-4,4-biphenylenediamine and p-fluoronitrobenzene described in step ① The amount ratio of substances is 1:2;

[0067] The volume ratio of the amount of N,N-bis(1...

specific Embodiment approach 3

[0086] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the organic solvent described in step two is one of triphenyl phosphite, pyridine and N-methylpyrrolidone or a mixture of several of them . Others are the same as in the second embodiment.

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Abstract

The invention discloses a polyamide film with the electrochromism performance, and a preparation method and application thereof, relates to the polyamide film, and the preparation method and the application thereof, and aims to solve the problems of low solubility of polyamide in an organic solvent, difficulty in film forming and low heat stability in the prior art. The structural formula of the polyamide film with the electrochromism performance is shown as follows. The preparation method comprises the following steps: 1, synthesizing an N,N'-di(alpha-naphthyl)-N,N'-di(4-phenyl isocyanate) biphenyl monomer; 2, performing polymerization reaction; 3, performing curing and film-forming to obtain the polyamide film with the electrochromism performance. According to the invention, the polyamide film with the electrochromism performance can be obtained.

Description

technical field [0001] The invention relates to a polyamide film and its preparation method and application. Background technique [0002] Polymers containing triphenylamine can form cationic radicals under the action of an electric field, and are important raw materials for the preparation of charge transport materials, electroluminescent materials, and electrochromic materials, as well as organic dyes and pharmaceutical intermediates. Aromatic polyamides are high-performance polymers. They have good thermal stability, mechanical properties and electrochromism, and are expected to be used in optical storage, optical memory, optical computing, and optical limiting laser protection. However, the existing polyamides still have the problems of low solubility, difficulty in film formation and low photochromic response sensitivity, which need further research and improvement. The main solution is to introduce large groups on the main chain. On the other hand, by changing the ch...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L77/06C08L77/10C08G69/32C08G69/28C09K9/02
CPCY02P20/582
Inventor 牛海军吴晓彤蔡姝巍李宇蔡万安肖田地
Owner HEILONGJIANG UNIV
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