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Core-shell type carbon microspheres and preparation method and application thereof

A carbon microsphere, core-shell type technology, which is applied in the field of surface functional modification of carbon microspheres, can solve the problems such as the lack of research on the flame retardancy of carbon microspheres, the inability to improve the compatibility well, and the increase of surface functional group content. , to achieve the effect of stable product performance, wide application range and not easy to agglomerate

Active Publication Date: 2013-05-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acid treatment of carbon microspheres only increases the content of functional groups on the surface, and does not significantly improve its dispersibility; although grafting coupling agents on the surface of carbon microspheres can increase the degree of branching on the surface of carbon microspheres, it cannot Improve its compatibility with the matrix interface
At present, there is no report on the flame retardant properties of carbon microspheres

Method used

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  • Core-shell type carbon microspheres and preparation method and application thereof
  • Core-shell type carbon microspheres and preparation method and application thereof
  • Core-shell type carbon microspheres and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 48.6g of glucose was added to 600mL of deionized water to prepare a 0.45mol / L glucose solution, added to the autoclave, heated to 300°C under stirring, pressure 8MPa, stirred at constant temperature for 12h, and cooled to room temperature naturally. The reaction product was suction filtered and washed with deionized water until the pH value was 7, and the filter cake was dried at 120° C. for 300 min to obtain carbon microspheres.

[0029] Weigh 10g of terephthalic acid and dissolve it in 300mL of N,N-dimethylformamide, add it to a 500mL four-necked flask, add 50mL of ethylene glycol, 10g of carbon microspheres, 1.3g of antimony trioxide in turn, and stir under stirring. The temperature was raised to 140° C. under nitrogen protection, and 5 mL of OP-10 was slowly added to the four-necked flask, and the reaction was carried out for 7 h. The product was washed with absolute ethanol and filtered until the washing liquid was clarified, then washed with deionized water, and t...

Embodiment 2

[0033]54g of glucose was added to 600mL of deionized water to prepare a 0.5mol / L glucose solution, added to the autoclave, heated to 280°C under stirring, under a pressure of 7MPa, stirred at a constant temperature for 8h, and cooled to room temperature naturally. The reaction product was suction filtered and washed with deionized water until the pH value was 7, and the filter cake was dried at 120° C. for 300 min to obtain carbon microspheres.

[0034] Weigh 10g of terephthalic acid and dissolve it in 300mL of N,N-dimethylformamide, add it to a 500mL four-necked flask, add 100mL of ethylene glycol, 20g of carbon microspheres, and 3g of antimony trioxide in turn, and stir to pass through. Under nitrogen protection, the temperature was raised to 160 °C, and 10 mL of OP-10 was slowly added to the four-necked flask, and the reaction was carried out for 8 h. The product was washed with absolute ethanol and filtered until the washing liquid was clarified, then washed with deionized...

Embodiment 3

[0036] 32.4g of glucose was added to 600mL of deionized water to prepare a 0.4mol / L glucose solution, added to the autoclave, heated to 260°C under stirring, pressure 6.5MPa, stirred at constant temperature for 12h, and cooled to room temperature naturally. The reaction product was suction filtered and washed with deionized water until the pH value was 7, and the filter cake was dried at 120° C. for 300 min to obtain carbon microspheres.

[0037] Weigh 10g of terephthalic acid and dissolve it in 300mL of N,N-dimethylformamide, add it to a 500mL four-necked flask, add 50mL of ethylene glycol, 10g of carbon microspheres, and 2g of antimony trioxide in turn, and stir to pass through. Under nitrogen protection, the temperature was raised to 180 °C, and 8 mL of OP-10 was slowly added to the four-necked flask, and the reaction was carried out for 7 h. The product was washed with absolute ethanol and filtered until the washing liquid was clarified, then washed with deionized water, a...

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Abstract

The invention relates to core-shell type carbon microspheres and a preparation method and application thereof. The carbon microspheres are prepared by a glucose hydrothermal synthesis method; and the surface of the microspheres is clad with a layer of ethylene glycol terephthalate by taking terephthalic acid and ethylene glycol as raw materials and adopting an in-situ polymerization method to obtain core-shell type microspheres. The core-shell type microspheres provided by the invention are black spherical powder, and the thickness of the cladding layer is 15-30nm; the core-shell type microspheres have stable chemical and physical performance, do not agglomerate easily, and can be used as a flame retardant; and moreover, with good compatibility with a polymer base material, the core-shell type microspheres can effectively improve the flame retardance of the polymer base material.

Description

technical field [0001] The invention belongs to the technical field of surface functional modification of carbon microspheres, and relates to a carbon microsphere with a core-shell structure obtained by surface modification, and a preparation method and application of the core-shell carbon microsphere. Background technique [0002] In recent years, fire incidents have occurred frequently all over the world, causing huge personal injury and property loss, which has attracted widespread attention, and flame retardant technology has become a research hotspot. Now flame retardants are developing towards non-halogenation, ultra-fine flame retardant, and smoke suppression, and nano flame retardants have attracted more and more attention. [0003] The method of dispersing the solid flame retardant into particles of 1-100nm size by physical or chemical methods is called nano flame retardant technology. Physical methods include evaporation condensation method and mechanical crushing...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K3/04C08L67/02C09C1/44C09C3/08
Inventor 牛梅戴晋明王欣侯文生王淑花薛宝霞张莹
Owner TAIYUAN UNIV OF TECH
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