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Preparation of polymer based carbon balls

A polymer and carbon sphere technology, which is applied in the field of polymer-based carbon sphere preparation, can solve the problems of difficult large-scale preparation, uneven particle size, and many surface defects, and achieve uniform and controllable particle size, easy large-scale preparation, smooth surface effect

Inactive Publication Date: 2005-07-27
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Obviously, these methods generally have complex processes (requires arc discharge, plasma initiation or high temperature and high pressure reaction conditions), low yield (there are a considerable number of by-products such as carbon nanotubes, nano-onions, fullerenes, etc.) , uneven particle size, poor sphericity (many surface defects, not smooth), impurities in the material, high material cost, and difficulty in large-scale preparation, etc.

Method used

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  • Preparation of polymer based carbon balls
  • Preparation of polymer based carbon balls
  • Preparation of polymer based carbon balls

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Take by weighing 10 grams of polyvinyl chloride (PVC) paste resin (commercially available, the model is P450, the degree of polymerization is: 1000 ± 150, the particle diameter is 300nm and 1.2 μ m bimodal distribution, scanning electron microscope photo sees figure 1 ) and 10 grams of KOH (analytically pure, molecular weight 56.10) were put into a three-necked flask, and then 100 grams of deionized water was added. The mass ratio of polyvinyl chloride paste resin, KOH and deionized water is 1:1:10. The three-neck flask was placed in a water bath and reacted at a constant temperature of 95° C. for 3 days under constant stirring. Then the reactants were taken out, washed with deionized water until neutral and dried at 100°C, and then placed in a blast oven at 240°C for air oxidation treatment for 1 hour. Put the treated polyvinyl chloride paste resin into a carbonization furnace to raise the temperature to 1000°C at a rate of 2°C / min., and stay at this temperature for o...

Embodiment 2

[0029] The operation method is the same as in Example 1, except that the temperature of the air oxidation treatment is 180° C., and the time is 3 hours. The morphology and particle size of the polymer-based carbonized carbon spheres are the same as in Example 1.

Embodiment 3

[0031] The operation method is the same as in Example 1, except that the mass ratio of polyvinyl chloride paste resin, KOH and deionized water is 1:17:10; the three-necked flask is placed in an electric heating mantle for heating; the temperature of the alkali treatment The temperature is 130°C; the alkali treatment time is 12 hours. After carbonization at 1000°C, polymer-based carbonized carbon spheres are obtained as spherical black carbon powder, and then graphitized at 2500°C to obtain polymer-based graphitized carbon spheres. The final product remains solid spherical, and XRD tests show that it is crystallized The degree increases.

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Abstract

Production of polymer base carbon ball is carried out by taking polymer micro-sphere resin containing halogen element with 100nm-100ª–m as raw material, alkalizing treating, oxidizing treating, carbonizing treating, graphite treating and obtaining polymer base carbon micro-sphere with 100nm-100ª–m grain size; taking polymer micro-sphere resin containing halogen element < 100nm, alkalizing treating, oxidizing treating, graphite treating and obtaining polymer base carbon micro-sphere with grain size <100nm. Alkalizing treating is carried out by agitating polymer micro-sphere and alkaline solvent under 60-280deg.C for 6-72hrs, drying and obtaining presoma. Oxidizing temperature is 180-240deg.C, and oxidizing time is 1-3hrs. It achieves simple process, low cost, and high purity.

Description

technical field [0001] The invention relates to a new method for preparing polymer-based carbon spheres. The polymer spherical resin is used as a raw material, and is prepared by carbonization or graphitization after alkali treatment and oxidation treatment. Background technique [0002] Since the 1990s, the discovery of advanced carbon materials represented by fullerenes and carbon nanotubes has triggered an upsurge in research on carbon materials worldwide. Many carbon materials with different shapes, novel structures and unique properties, such as carbon nanocones, nano onions, carbon micro trees and sucrose carbon spheres, have been successively researched and developed, and have broad application prospects in the fields of electronics, energy, medicine, materials, etc. . [0003] The emergence of spherical carbon materials has aroused great interest in the chemical, material science and business circles, and is considered to be a new type of special material with broad...

Claims

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Application Information

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IPC IPC(8): C01B31/02C04B35/524
Inventor 宋怀河王景坤陈晓红
Owner BEIJING UNIV OF CHEM TECH
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