Check patentability & draft patents in minutes with Patsnap Eureka AI!

Rapid drying method for reductive graphene oxide

A fast-drying, graphene-based technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of reduced graphene oxide ablation, carbon layer rearrangement and crystallization, graphene ablation, etc., to achieve heating The effect of uniformity, rapid process control and simple process

Inactive Publication Date: 2018-09-04
SHANDONG HAIMAI NEW MATERIAL CO LTD
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, microwave action may cause graphene ablation, puffing, or rearrangement and crystallization of carbon layers.
[0007] In the present invention, the high-frequency wave-transmitting material is used as a grinding medium to mix and granulate the reduced graphene oxide, and then microwave technology is used to dry the reduced graphene oxide, which effectively solves the problem of microwave-induced ablation, puffing or carbon layer regeneration of the reduced graphene oxide. The problem of array crystallization has not been reported in related technologies

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Use quartz balls with a particle size of 5mm as the grinding medium, and the water content of the reduced graphene oxide to be dried is 98%. According to the mass ratio of the former to the latter, 5kg of mixed materials are prepared, added to the granulator, and stirred and granulation to obtain mixed granules. The mixed particles are placed in a microwave box for irradiating for 30s, and the microwave frequency is 2450MHz; the mixture after microwave irradiation is taken out, added to a grinder for grinding and sieving, to obtain dry reduced graphene oxide.

Embodiment 2

[0030] Use quartz balls with a particle size of 10mm as the grinding medium, and the water content of the reduced graphene oxide to be dried is 95%. Prepare 5kg of mixed materials according to the mass ratio of the former to the latter at 500:1, add to the granulator, and stir and granulation to obtain mixed granules. The mixed particles were placed in a microwave box for irradiating for 15s, and the microwave frequency was 2450MHz; the mixture after microwave irradiation was taken out, added to a grinder for grinding and sieving, and dried reduced graphene oxide was obtained.

Embodiment 3

[0032] Use quartz balls with a particle size of 15mm as the grinding medium, and the water content of the reduced graphene oxide to be dried is 90%. According to the mass ratio of the former to the latter, 5kg of the mixed material is prepared, added to the granulator, and stirred and granulation to obtain mixed granules. The mixed particles are placed in a microwave oven for 10 seconds of irradiation, and the microwave frequency is 915 MHz; the mixture after microwave irradiation is taken out, added to a grinder for grinding and sieving, to obtain dry reduced graphene oxide.

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of graphene drying, and particularly relates to a rapid drying method for reductive graphene oxide. The rapid drying method includes adding grinding mediaand to-be-dried reductive graphene oxide into a pelleting machine to conduct stirring and pelleting; forming coatings on the surfaces of the grinding media by the to-be-dried reductive graphene oxideto obtain mixed particles; irradiating the mixed particles in a microwave cabinet; taking out the mixed particles irradiated by microwaves, and grinding and screening the mixed particles in a grindingmachine to obtain the dried reductive graphene oxide. According to the rapid drying method, high-frequency wave-transmitting materials are taken as the grinding media to be subjected to mixing pelleting with the reductive graphene oxide, and the reductive graphene oxide is dried by applying the microwave technology, so that the problems of erosion, swelling or carbon layer realignment and recrystallization of the reductive graphene oxide due to the microwaves are solved. The rapid drying method has the advantages of simple process, convenience in operation, rapid process control, heating uniformity, safety, non-pollution, energy conservation, high efficiency and the like, and accordingly, drying efficiency is guaranteed, and product quality is improved.

Description

technical field [0001] The invention belongs to the technical field of graphene drying, and in particular relates to a rapid drying method for reducing graphene oxide. Background technique [0002] Graphene is a two-dimensional carbon nanomaterial in which carbon atoms form a hexagonal honeycomb lattice with sp2 hybrid orbitals. Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery, and is considered to be a revolutionary material in the future. [0003] Realizing rapid, low-cost, pollution-free, high-performance large-scale preparation of graphene is the premise and guarantee for its application, and it is also the focus of attention and research in the current graphene industry. There are many existing graphene preparation methods, such as redox method, gas phase synthesis method and liquid phase exfoliation method. Considering fact...

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): C01B32/194
CPCC01B32/194
Inventor 蔡强蔡超刘剑于玉华
Owner SHANDONG HAIMAI NEW MATERIAL CO LTD
Features
  • R&D
  • 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