Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Polypyrrole-polyaniline/Fe3O4 compound and preparation method thereof

A composite and aniline technology, applied in the direction of ferrous oxide, iron oxide/iron hydroxide, etc., can solve the problems of uneven dispersion and complexity of magnetic particles

Inactive Publication Date: 2014-11-12
OCEAN UNIV OF CHINA
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two-step synthesis method adopted by Xiong Dongbai et al. is relatively complicated, and the magnetic particles are not uniformly dispersed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polypyrrole-polyaniline/Fe3O4 compound and preparation method thereof
  • Polypyrrole-polyaniline/Fe3O4 compound and preparation method thereof
  • Polypyrrole-polyaniline/Fe3O4 compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Embodiment 1: poly(pyrrole-aniline) / Fe of the present invention 3 o 4 Preparation of complex

[0077] The implementation steps of this embodiment are as follows:

[0078] A. Preparation of white emulsion

[0079] Add 6.5mmol of pyrrole to 80ml of ammonia solution with a concentration of 1.4mol / L, and use an ultrasonic device sold under the trade name Ultrasonic Cleaner by Gowell Technology Co., Ltd. to ultrasonically treat the resulting mixture at a frequency of 20KHz and a power of 80w 2min, obtain a kind of white emulsion;

[0080] B. Add ferrous chloride

[0081] At a temperature of 20°C, according to FeCl 2 4H 2 The molar ratio of O to pyrrole is 1:2.4, add 0.5mol / LFeCl to the white emulsion obtained in step A 2 4H 2 O aqueous solution, obtains the solution containing ferrous chloride;

[0082] C. Add ferric chloride

[0083] According to FeCl 2 .4H 2 O and FeCl 3 ·6H 2 The molar ratio of O is 1:50, add 6.0mol / LFeCl dropwise to the ferrous chloride sol...

Embodiment 2

[0093] Embodiment 2: poly(pyrrole-aniline) / Fe of the present invention 3 o 4 Preparation of complex

[0094] The implementation steps of this embodiment are as follows:

[0095] A. Preparation of white emulsion

[0096] Add 1.0mmol of pyrrole to 100ml of ammonia solution with a concentration of 1.0mol / L, and use ultrasonic equipment sold by Gowell Technology Co., Ltd. under the trade name Ultrasonic Cleaner, and ultrasonically treat the resulting mixture at a frequency of 30KHz and a power of 80w. 2min, obtain a kind of white emulsion;

[0097] B. Add ferrous chloride

[0098] At a temperature of 5°C, according to FeCl 2 4H 2 The molar ratio of O to pyrrole is 1:0.3, add 0.3mol / LFeCl to the white emulsion obtained in step A 2 4H 2 O aqueous solution, obtains the solution containing ferrous chloride;

[0099] C. Add ferric chloride

[0100] According to FeCl 2 .4H 2 O and FeCl 3 ·6H 2 The molar ratio of O is 1:31, add 3.0mol / LFeCl dropwise to the ferrous chloride ...

Embodiment 3

[0106] Embodiment 3: Poly(pyrrole-aniline) / Fe of the present invention 3 o 4 Preparation of complex

[0107] The implementation steps of this embodiment are as follows:

[0108] A. Preparation of white emulsion

[0109] Add 3.8mmol pyrrole to the 90ml ammonia solution with a concentration of 1.2mol / L, and use the ultrasonic equipment sold by Gowell Technology Co., Ltd. under the trade name Ultrasonic Cleaner, and ultrasonically treat the obtained mixture under the condition of frequency 20KHz and power 120w 4min, obtain a kind of white emulsion;

[0110] B. Add ferrous chloride

[0111] At a temperature of 25°C, according to FeCl 2 4H 2 The molar ratio of O to pyrrole is 1:3.0, add 0.3mol / LFeCl to the white emulsion obtained in step A 2 4H 2 O aqueous solution, obtains the solution containing ferrous chloride;

[0112] C. Add ferric chloride

[0113] According to FeCl 2 .4H 2 O and FeCl 3 ·6H 2 The molar ratio of O is 1:78, add 4.0mol / LFeCl dropwise to the ferrou...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
strengthaaaaaaaaaa
electrical bandwidthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a polypyrrole-polyaniline / Fe3O4 compound with the characteristic of microwave absorption and a preparation method of the polypyrrole-polyaniline / Fe3O4 compound. The preparation method includes the steps of preparing white emulsion, adding ferrous chloride, adding ferric chloride, carrying out washing and drying, and the like. The absorption frequency band of the compound prepared according to the method can be adjusted by changing the thickness of the compound, the microwave absorption frequency band is obviously broadened, and good wave absorption performance is achieved. In the preparation process, electromagnetic parameters can be adjusted by changing temperature and the use number of oxidizing agents, and the method is of great significance in broadening the microwave absorption frequency band of the compound and preparing novel wave absorption materials.

Description

【Technical field】 [0001] The invention belongs to the technical field of novel wave-absorbing materials. More specifically, the present invention relates to a poly(pyrrole-aniline) / Fe 3 o 4 complexes, also involving the poly(pyrrole-aniline) / Fe 3 o 4 Method for the preparation of the complex. 【Background technique】 [0002] Microwave material refers to a material that can absorb and attenuate incident electromagnetic waves, and convert its electromagnetic energy into heat energy to dissipate or make electromagnetic waves disappear due to interference. Absorbing materials were first used for military purposes and were called "stealth materials". Research on microwave materials in civilian applications such as television broadcasting, electronic devices, and microwave radiation protection has also received increasing attention. Absorbing materials are divided into traditional absorbing materials and new absorbing materials. New absorbing materials have the characteristic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08L79/02C08K3/22C08G73/06C08G73/02C01G49/08
CPCC01G49/08C08G73/0266C08G73/0611C08L79/02C08L79/04C08L2205/02C08K2003/2275
Inventor 张志明于良民于甜甜姜晓辉赵海洲李昌诚闫雪峰李霞董磊
Owner OCEAN UNIV OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com