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

Method for preparing Nano composite material of amorphous carbon / silicon dioxide

A technology of nanocomposite materials and silicon dioxide, which is applied in the field of preparation of nanocomposite materials, can solve the problems of complex preparation process, low yield, uneven particle size, etc.

Inactive Publication Date: 2007-07-25
HARBIN INST OF TECH
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of complex preparation process, low yield, many impurity components and uneven particle size of the original carbon / silicon dioxide nanocomposite material

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

specific Embodiment approach 1

[0004] Specific embodiment one: this embodiment is realized through the following steps: (one) get silica sol and sucrose, wherein the molar ratio of silicon and carbon is 1: 6~6: 1; (two) use magnetic stirrer under room temperature condition Stir in the beaker for 3 to 6 hours to prepare a uniform sol; (3) put the beaker with the sol in a water bath heater, and control the temperature between 50°C and 95°C for gelation treatment for 5 to 20 hours, Obtain white or slightly pale yellow transparent gel; (4) put the obtained gel into a crucible and place in a tubular heating furnace, feed nitrogen into the tubular heating furnace with a flow rate of 800~1600ml / min, At the same time, the tubular heating furnace is heated to 600-900 °C at a heating rate of 5-20 °C / min, and the temperature is maintained for 0.5-5 hours; (5) Continue to feed nitrogen into the tubular heating furnace at a flow rate of 800-1600 ml / min , and cooled to room temperature under the protection of nitrogen to...

specific Embodiment approach 2

[0005] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step (1), when the molar ratio of carbon to silicon exceeds 3, deionized water is added at a ratio of every 2 parts of mass sucrose: 1 part of mass deionized water water. Other steps are the same as those in Embodiment 1.

specific Embodiment approach 3

[0006] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step (1), silica sol and sucrose are used, wherein the molar ratio of silicon to carbon is 2:5 to 5:2. Other steps are the same as those in 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

No PUM Login to View More

Abstract

This invention relates to method for preparing amorphous carbon / silica nanocomposite. The method solves the problems of complex process, low yield, high impurity content and ununiform particle size distribution faced by the present methods in preparing carbon / silica nanocomposite. The method comprises: (1) mixing silica sol, sucrose and deionized water; (2) stirring; (3) gelatinizing the sol; (4) heat-treating the gel; (5) cooling to obtain amorphous carbon / silica nanocomposite. The method has simple process, and does not need any catalyst. The ratio of carbon to silica in the product can be easily controlled. Carbon and silica both exist in the amorphous states, and combine to form uniform particles on nanometer scale. The product has high reactivity, and can be used as the raw material for SiC nanomaterial, SiC-containing composite and Si-O-C-containing composite.

Description

technical field [0001] The invention relates to a preparation method of a nanocomposite material. technical background [0002] The original carbon / silicon dioxide nanocomposites have complex preparation process, low yield, need to introduce additives or catalysts, raw materials and products are prone to pollution, and the prepared materials often contain impurities, among which carbon and SiO 2 The particles have poor uniformity and different sizes. Contents of the invention [0003] The invention aims to solve the problems of complex preparation process, low yield, many impurity components and uneven particle size of the original carbon / silicon dioxide nanocomposite material. Provide a kind of preparation method of the carbon / silicon dioxide nanocomposite material of amorphous state now, this method realizes by following steps: (1) get silica sol and sucrose, wherein the mol ratio of silicon and carbon is 1: 6~6: 1; (2) Use a magnetic stirrer to stir in a beaker for 3 ...

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): C01B33/18C01B31/02C01B31/36B82B3/00C04B35/628
Inventor 温广武张晓东
Owner HARBIN INST OF TECH
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