Homogeneous core-shell composite material PPy @ PANI and preparation method thereof

A composite material, core-shell technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of low polyaniline usage, increased polyaniline usage, uneven particles, etc., and achieves strong absorption capacity and wide absorption bandwidth. , the effect of enhancing absorption

Inactive Publication Date: 2015-12-09
HARBIN INST OF TECH
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems that a large amount of self-polymerization occurs when polyaniline is used to prepare wave-absorbing materials when the amount of polyaniline is increased, resulting in low polyaniline usage, less coating, and uneven particles, and provides a uniform core-shell Composite material PPyPANI and its preparation method

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
  • Homogeneous core-shell composite material PPy @ PANI and preparation method thereof
  • Homogeneous core-shell composite material PPy @ PANI and preparation method thereof
  • Homogeneous core-shell composite material PPy @ PANI and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0036] Embodiment 1: In this embodiment, the homogeneous core-shell composite material PPyPANI uses polypyrrole as the core material and polyaniline as the wall material.

specific Embodiment approach 2

[0037] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass ratio of polypyrrole as the core material to polyaniline as the wall material is 1:(0.2-2). Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0038] Specific embodiment three: The uniform core-shell composite material PPyPANI of this embodiment is prepared according to the following steps:

[0039] 1. Preparation of PPy balls: 0.08~0.12g FeCl 2 4H 2 O was dispersed in 60mL deionized water, then 0.8-1.2mL pyrrole monomer was added, and then 5-8mL H 2 o 2 React for 12 hours, then wash with acetone, and dry at 60°C for 12 hours;

[0040] 2. Disperse the polypyrrole microspheres prepared in step 1 into the hydrochloric acid solution, stir for 1 h under ice-water bath conditions, then add aniline monomer and ammonium persulfate under ice-water bath conditions and react for 24 hours, then wash with distilled water and ethanol, Then place it in an environment of 60° C. and dry for 12 hours; the homogeneous core-shell composite material PPyPANI is obtained.

[0041] The concentration of the hydrochloric acid solution in Step 2 of this embodiment is 0.1 mol / L.

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

A homogeneous core-shell composite material PPy @ PANI and a preparation method thereof. The invention relates to a core-shell composite material and a preparation method thereof and solves the problems that when a wave-absorbing material is prepared from polyaniline, a large quantity of auto-polymerization exists due to increase of the use amount of the polyaniline, thereby causing low use amount of the polyaniline, less coating quantity and non-uniformity of particles. In the homogeneous core-shell composite material PPy @ PANI, polypyrrole is employed as a core material and polyaniline is employed as a wall material. The preparation method includes following steps: (1) preparing PPy micro-spheres; and (2) dispersing the PPy micro-spheres into an acid solution, stirring the dispersion in ice-water bath, adding an aniline monomer and ammonium persulfate, performing a reaction in the ice-water bath, and cleaning and drying a reaction product to obtain the homogeneous core-shell composite material PPy @ PANI. A wave-absorption material prepared from the homogeneous core-shell composite material PPy @ PANI is thin in wave-absorption layer, is light in weight, is wide in absorption band and is strong in adsorption capability. The material can be used in the field of stealth technology and electromagnetic wave shielding.

Description

technical field [0001] The invention relates to a core-shell composite material and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, radio technology has been widely used in various fields such as national defense technology, industrial and agricultural production, transportation, communication, information industry, etc., and has penetrated into thousands of households. It has created a huge material civilization for mankind. It also brings people into an environment full of electromagnetic radiation. Electromagnetic radiation is harmful to human life. It will affect the circulatory system, immunity, reproduction and metabolic functions of the human body. In severe cases, it will induce cancer and accelerate the proliferation of human cancer cells; it will also interfere with electronic equipment and cause signal distortion, affecting flammable and flammable Explosives, causing missile systems to fail, etc. ...

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): C09K3/00C08G73/02C08G73/06C08K3/22
Inventor 杜耘辰田春华韩喜江
Owner HARBIN INST OF TECH
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap