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

Phosphorus-nitrogen flame retardant functionalized graphene and preparation method thereof

A flame retardant and graphene technology, which is applied in the field of phosphorus-nitrogen flame retardant functionalized graphene and its preparation, can solve the problems of restricting the application of graphene, difficult matrix dispersion, weak matrix force, etc., and achieve good application Foreground, easy to control, high char effect

Inactive Publication Date: 2018-07-20
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a strong van der Waals force between the graphene sheets, and it is easy to agglomerate and accumulate after reduction, and the force between the graphene and the matrix is ​​weak, so it is difficult to obtain a good dispersion in the matrix, which directly limits the use of graphene in composite materials. Applications
The thermal stability and flame retardancy of polymer composites can be improved by using the gas barrier properties of graphene sheets, but usually requires a large amount of addition, and the efficiency is not high compared with other layered compounds

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
  • Phosphorus-nitrogen flame retardant functionalized graphene and preparation method thereof
  • Phosphorus-nitrogen flame retardant functionalized graphene and preparation method thereof
  • Phosphorus-nitrogen flame retardant functionalized graphene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] The experimental materials used in this example can be easily obtained from commercial companies unless otherwise specified.

[0038] The first is to prepare graphene oxide (GO) with reference to the Hummers method and a small amount of modification:

[0039] (1) After mixing 5g of graphite and 2.5g of sodium nitrate, add it to 250mL of concentrated sulfuric acid, and then add 15g of potassium permanganate under the condition of mechanical stirring. The above operations were all carried out in an ice-water mixed bath to prevent the reaction from being too violent, and the temperature was controlled below 25°C.

[0040] (2) After removing the ice-water mixed bath, the reaction temperature was raised to 35° C., and then mechanically stirred for 12 h. At this time, the reaction system presents a brown paste.

[0041] (3) After the temperature of the reaction system was lowered to room temperature, it was transferred to an ice-water mixing bath again, and 500 mL of deioni...

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

No PUM Login to View More

Abstract

The invention discloses a phosphorus-nitrogen flame retardant functionalized graphene and a preparation method thereof. The above substance is characterized in that the structure of the substance is represented by formula (I) shown in the description, and m and n in the formula (I) are integers in a range of 1 to 300. Modified graphene oxide weakens the strong interaction between layers of original graphene oxide, so the dispersion condition is greatly improved. Acylamino groups and phosphoramido groups on the surface of the modified graphene oxide have strong polarity, so the interaction between the modified graphene oxide and a PLA segment is greatly enhanced, thereby the dispersibility in the matrix is improved.

Description

technical field [0001] The invention relates to a phosphorus nitrogen type flame retardant functionalized graphene and a preparation method thereof. This kind of functionalized graphene can be applied in the field of flame-retardant polymer materials, and this kind of polymer does not contain halogen, and belongs to the environment-friendly flame retardant. Background technique [0002] Graphene is a new carbonaceous material in which carbon atoms are tightly packed into a single-layer two-dimensional honeycomb lattice structure. It has the characteristics of high strength, high electrical conductivity, and high specific surface area. It is widely used in the field of polymer-based composite materials. However, there is a strong van der Waals force between the graphene sheets, and it is easy to agglomerate and accumulate after reduction, and the force between the graphene and the matrix is ​​weak, and it is difficult to obtain a good dispersion in the matrix, which directly ...

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
IPC IPC(8): C08G83/00C08L67/04
CPCC08G83/001C08L67/04C08L2201/02C08L87/00
Inventor 方芳冉诗雅方征平郭正虹
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com