Unlock instant, AI-driven research and patent intelligence for your innovation.

Graphene and precursor ceramic composite material and preparing method thereof

A technology of precursor ceramics and composite materials, applied in electrical components, circuits, battery electrodes, etc., can solve the problems of graphene and ceramic composites that have not yet been reported.

Active Publication Date: 2013-05-01
TIANJIN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can also be applied to the direction of ceramics. Through literature research, the composite of graphene and ceramics has not been reported yet.

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 and precursor ceramic composite material and preparing method thereof
  • Graphene and precursor ceramic composite material and preparing method thereof
  • Graphene and precursor ceramic composite material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Weigh 2g of hydrogen-containing polysiloxane (PHMS) and 2g of 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane ( D. 4 Vi) Pour into a 50ml beaker, put in a stirrer, stir magnetically at room temperature for 15min, add 0.04g of methylvinylsiloxane coordination platinum catalyst (platinum content: 1000ppm), and continue stirring for 15min; pour the precursor liquid into a glass mold , put it into a constant temperature oven, set the temperature at 60°C, keep it warm for 4 hours, then raise the temperature to 80°C, keep it warm for 4 hours, take out the cross-linked body from the mold after cooling, put it into a sample dish for pyrolysis; put the cross-linked body in Put the alumina crucible in the constant temperature zone of the high-temperature tube furnace; feed Ar for 10 minutes, and control the gas flow within the range of 100-200 sccm to drive out the air in the furnace tube, so as to ensure that the whole process of pyrolysis is carried out unde...

Embodiment 2

[0026] Embodiment two: prepare high-purity graphite oxide (GO) with improved Hummer method, take by weighing 2g PHMS and 2gD with analytical balance 4 Pour Vi into a 50ml beaker, put a stirrer, stir magnetically at room temperature for 15min, add 0.04g of methylvinylsiloxane coordination platinum catalyst, and continue stirring for 15min; add 0.12g (30wt.%) to the above system for 180 Mesh GO, mixing, magnetic stirring for 45 minutes, ultrasonication for 10 minutes; pour the precursor fluid into a glass mold, put it into a constant temperature oven, set the temperature at 60°C, keep it for 4 hours, then raise the temperature to 80°C, keep it for 4 hours, and remove it from the mold after cooling Take out the cross-linked body and put it into a sample dish for pyrolysis; put the cross-linked body into an alumina crucible and place it in the constant temperature zone of a high-temperature tube furnace; feed Ar for 10 minutes, and control the gas flow in the range of 100-200 sccm ...

Embodiment 3

[0027] Embodiment three: prepare high-purity graphite oxide (GO) with improved Hummer method, take by weighing 2g PHMS and 2gD with analytical balance 4 Pour Vi into a 50ml beaker, put in a stirrer, stir magnetically at room temperature for 15min, add 0.04g of methylvinylsiloxane coordination platinum catalyst, and continue stirring for 15min; add 0.24g (60wt.%) to the above system for 180 Mesh GO, mixed, and magnetically stirred for 45 minutes; pour the mixed precursor body fluid into a glass mold, put it into a constant temperature oven, set the temperature at 60°C, keep it warm for 4 hours, then raise the temperature to 80°C, keep it warm for 4 hours, and take it out of the mold after cooling. Put the cross-linked body into a sample dish for pyrolysis; put the cross-linked body into an alumina crucible and place it in the constant temperature zone of a high-temperature tube furnace; feed Ar for 10 minutes, and control the gas flow within the range of 100-200 sccm to Drive o...

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 diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a graphene and precursor ceramic composite material and a preparing method thereof. The graphene and precursor ceramic composite material is prepared with graphite oxide (GO) and precursor polysiloxane solution or polysilazane solution as raw materials according to a mass proportion of 100:0.5-60 between the polysiloxane and GO. The preparing method comprises the following processing steps: mixing GO with the precursor solution, obtaining the suspension through mechnical mixing, generating crosslinking in the suspension under a certain temperature, programmed-increasing the temperature to 1000 DEG C for high temperature pyrolysis which the produced crosslinking body is protected by the argon, and releasing the small molecules of water molecule, carbon dioxide, etc. from the GO and the precursor crosslinking body in the pyrolytic process for transforming the GO into GNS and transforming the precursor to the precursor ceramic thereby preparing the GNS andthe precursor ceramic composite material. The invention adopts a high-temperature pyrolysis one-step method for introducing the grapheme two-dimensional structure into the grapheme ceramic three-dimensional network structure and preparing the novel composite structure with the shape of layered shape, lattice shape and cage shape. The unique structure of the novel composite material has significance for increasing the mechanical property, the high-temperature property and especially the electrical property of the ceramic.

Description

technical field [0001] The invention relates to a graphene and precursor ceramic composite material and a preparation method. Based on the graphite oxide prepared by the improved Hummer method, graphite oxide is added to the precursor body liquid, and graphene and precursor ceramic composite are prepared by cross-linking and high-temperature pyrolysis. Material. Background technique [0002] The special two-dimensional crystal structure of graphene itself makes it have a wide range of unusual characteristics, and its thermal conductivity and hardness are significantly higher than those of graphite (~3000Wm -1 K -1 , ~1060GPa), has a higher electrical conductivity, and the fracture strength can also be compared with carbon nanotubes with similar defects. These excellent properties provide a good basis for its application and preparation of composite materials. At present, the research on graphene composite materials mainly focuses on the composite of graphene and polymer, ...

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 Patents(China)
IPC IPC(8): C04B32/00C04B35/01C04B35/515H01M4/58
CPCY02E60/12Y02E60/10
Inventor 李亚利纪芳侯峰
Owner TIANJIN UNIV
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