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

Graphene slurry containing dispersion grinding aid and preparation method of graphene slurry

A grinding aid and graphene technology, which is applied in the field of graphene slurry containing dispersing grinding aid and its preparation, can solve the problems that affect the popularization and application of graphene slurry, high production cost, and high strength of expanded graphite sheets , to achieve the effect of improving sanding efficiency, adding less, and improving rheology

Inactive Publication Date: 2019-03-12
江苏杉元科技有限公司
View PDF10 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical difficulty is that the expanded graphite sheet has high strength and is not easy to be broken and peeled off. In order to achieve the required particle size and sheet thickness, it takes a long time to peel and grind and requires high equipment, which will lead to high production costs. Popularization and Application of Graphene Slurry

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
  • Graphene slurry containing dispersion grinding aid and preparation method of graphene slurry
  • Graphene slurry containing dispersion grinding aid and preparation method of graphene slurry
  • Graphene slurry containing dispersion grinding aid and preparation method of graphene slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 50g of carbon black Super P Li to 950g of NMP, pre-disperse with a dispersing disc at 1500rpm for 15min, and pass through an 80-mesh stainless steel sieve to obtain a carbon black dispersion. Then carbon black dispersion is added in high-pressure homogenizer, homogenization pressure 120MPa, homogenization 1 time, obtains dispersion grinding aid 1; Carbon black dispersion is put into high-pressure homogenizer, homogenization pressure is 100MPa, homogenization 1 time to obtain dispersing grinding aid 2; put the carbon black dispersion into a high-pressure homogenizer with a homogenizing pressure of 80 MPa, and homogenize 1 time to obtain dispersing grinding aid 3. The carbon black dispersion and the obtained 3 dispersing grinding aids were used to test the particle size with a laser particle size analyzer, and the results are shown in figure 1 and Table 1.

Embodiment 2

[0046] The 16g dispersing grinding aid 1 (according to solid content calculation) that obtains among the embodiment 1, 384g expansion rate are 400 times expanded graphite, 7280g solvent NMP carry out dispersion mixing 1 hour with high-speed disperser 2500RPM, obtain premix; Then put the premix into the sand mill and carry out the sand mill liquid phase peeling, the sand mill line speed is 12m / s, the diameter of the zirconium beads of the sand mill is 1 mm, and the sand mill time is 5 hours to obtain a compound containing dispersion grinding aid. agent graphene slurry. Detect the particle size and viscosity of the intermediate state material after sanding for 2 hours. Carry out viscosity test, particle size test and plate resistivity test to the obtained graphene slurry, the results are shown in Table 2; washing and freeze-drying test SEM, the results are shown in figure 2 .

Embodiment 3

[0048] The used dispersing grinding aid in embodiment 2 is changed into dispersing grinding aid 2, and other conditions are unchanged.

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 provides graphene slurry containing a dispersion grinding aid and a preparation method of the graphene slurry. The graphene slurry is composed of graphene, the dispersion grinding aid and a solvent, wherein the dispersion grinding aid is carbon black particles, and the particle size D50 of the carbon black particles which is tested by a laser particle analyzer is less than 300nm. When preparing the graphene slurry, the dispersion grinding aid can reduce the difficulty of grinding and peeling of the expanded graphite, and the dispersion grinding aid between expanded graphite slicelayers are easy to slide to lower the viscosity of the slurry to improve the rheological property and improve sanding efficiency; and meanwhile, the carbon black particles in the slurry can further be used as a physical barrier dispersant for the graphene, and the prepared graphene slurry has good electrical conductivity.

Description

technical field [0001] The invention belongs to the field of graphene slurry, in particular to a graphene slurry containing a dispersing grinding aid and a preparation method thereof. Background technique [0002] Graphene is a thin-layer two-dimensional nanomaterial with high specific surface area, high surface energy, strong van der Waals force and large π bond conjugation between sheets, and it is easy to agglomerate and fold back. When preparing graphene by the liquid phase exfoliation method, in order to prevent the irreversible folding back of the exfoliated graphene, it is generally necessary to add a dispersant to prevent agglomeration and folding back. [0003] The dispersants usually added in the industry are organic surfactants or organic polymers. In a sense, this type of organic dispersant is an impurity that will affect the performance of graphene, especially the electrical conductivity. For example: (1) Surfactants, such as: conventional dispersants polyvinyl...

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): C01B32/19
CPCC01B2204/32C01B32/19
Inventor 刘刚桥王汇龙孙培育
Owner 江苏杉元科技有限公司
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