Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving dispersibility of graphene in polymer matrix

A graphene and polymer technology, applied in the field of improving the dispersibility of graphene in a polymer matrix, can solve the problems of weakening some properties of materials, requiring organic solvents, low efficiency, etc., achieving excellent comprehensive performance, easy access to equipment, Equipment simple effect

Inactive Publication Date: 2016-03-16
SICHUAN UNIV +1
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these modification methods, organic chemical reactions are involved, which have disadvantages such as time-consuming, low efficiency, and the need for organic solvents.
At the same time, studies have shown that the introduction of a third component such as a compatibilizer can also effectively weaken the agglomeration of graphene in the matrix, but the third component may weaken some of the properties of the material.
[0005] It can be seen that there is still a lack of an efficient, green and environmentally friendly method for improving the dispersion of graphene nanomaterials in polymer matrices in the prior art.

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
  • Method for improving dispersibility of graphene in polymer matrix
  • Method for improving dispersibility of graphene in polymer matrix
  • Method for improving dispersibility of graphene in polymer matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Aluminum trichloride (AlCl 3 ) as a catalyst was added to the melt blending system of isotactic polypropylene (PP) and thermally reduced graphene (TrG) to prepare a PP / TrG composite material masterbatch with a high content of TrG. After extraction, the catalyst in the masterbatch was removed, and then the masterbatch was blended with PP to obtain a PP / TrG composite material with a lower TrG content. The specific raw materials and their weight ratios are shown in Table 1.

[0042] The specific preparation method is as follows:

[0043] The first step, at first prepare raw materials by above-mentioned components;

[0044] In the second step, the isotactic PP and thermally reduced graphene (TrG) were dried in an oven at 60°C for 12 hours;

[0045] Then, put the isotactic PP and TrG obtained in the second step into the torque rheometer for banburying and mixing for 2 minutes, and then add AlCl 3 Add it into the blending system and mix for 10 minutes, the processing tempe...

Embodiment 2-13

[0069] The raw materials of embodiment 2-13 and their weight ratio are shown in table 1, and its preparation method is the same as embodiment 1.

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for improving dispersibility of graphene in a polymer matrix. The method comprises the following steps: fusing and mixing a polymer, graphene and a Lewis acid catalyst according to a ratio of 100: 3-10: 0.1-2 so as to obtain polymer / graphene composite material master batch; and then removing the Lewis acid and mixing the prepared master batch with the polymer so as to obtain a nanocomposite with low graphene content. Compared with a polymer / graphene composite material prepared without treatment with the Lewis acid catalyst, the polymer / graphene composite material obtained in the invention has the following advantages: dispersion of graphene in the polymer matrix is more uniform; aggregate is obviously reduced; and more uniform dispersion of graphene is beneficial for further improvement of thermal oxidative stability of the composite material.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, in particular to a method for improving the dispersibility of graphene in a polymer matrix. Background technique [0002] In 2004, Professor Andre Geim of the University of Manchester in the United Kingdom and his student Kostya Novoselov used graphite as a raw material to separate for the first time a two-dimensional carbon material composed of a layer of carbon atoms—graphene, breaking the two-dimensional carbon material that the physics community has always believed. The theory that three-dimensional crystal materials cannot exist stably has aroused widespread concern throughout the world. Graphene is a new type of two-dimensional honeycomb carbon material with a single layer of carbon atoms arranged in a hexagonal lattice. The thickness of a single layer of graphene is only 0.34nm, which is the thinnest material among known materials so far. It is precisely because of th...

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): C08L67/02C08L77/06C08L77/02C08L23/06C08L23/12C08K3/04C08J3/22C08J3/00
Inventor 黄亚江杨俊龙李光宪瞿研
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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