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Graphene oxide-ceramic composite powder and preparation method thereof

A technology of ceramic composite and graphene, applied in the field of ceramic composite materials, can solve the problems such as difficulty in mass production of graphene oxide-ceramic composite powder, high price of graphene oxide, unsatisfactory composite effect, etc., and achieve better dispersion effect. , the effect of improving efficiency and reducing production costs

Inactive Publication Date: 2018-04-13
郴州国盛新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of graphene oxide-ceramic composite powders from waste FCC catalysts has not yet been retrieved. Graphene oxide is expensive, and direct introduction of graphene oxide will greatly increase the production cost, making it difficult to mass-produce graphene oxide-ceramic composite powders. , and the composite effect is not ideal

Method used

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Effect test

preparation example Construction

[0030] A kind of preparation method of graphene oxide-ceramic composite powder disclosed by the invention comprises the following steps:

[0031] S1. After graphene oxide is wetted with deionized water, then add deionized water to dilute, stir for the first time, ultrasonic treatment, obtain graphene oxide suspension;

[0032] S2. The quality of graphene oxide accounts for 1.0~2.0wt% of the total mass of ceramic powder and graphene oxide; the quality of ceramic powder accounts for 98~99wt% of the total mass of ceramic powder and graphene oxide;

[0033] S3: The ceramic powder is quickly added to the graphene oxide suspension, and stirred for the second time to obtain a mixed solution of graphene oxide and ceramic powder;

[0034] S4: The mixed solution of graphene oxide and ceramic powder is suction-filtered to obtain mixed slurry, dried, and thermally reduced to obtain the graphene oxide-ceramic composite powder;

[0035] Wherein, the ceramic powder is a silicon carbide cera...

Embodiment 1

[0039] The preparation method of the graphene oxide-ceramic composite powder of the present embodiment comprises the steps:

[0040] S1. Wet the graphene oxide with deionized water, then add deionized water to dilute, stir for the first time, and perform ultrasonic treatment to obtain a graphene oxide suspension; the wetting time is 20 minutes, and the time for ultrasonic treatment 10min, the ultrasonic power is 30KHz; the first stirring time is 25min, and the stirring speed is 600r / min.

[0041] S2. The quality of graphene oxide accounts for 1.0wt% of the total mass of ceramic powder and graphene oxide; the quality of ceramic powder accounts for 99wt% of the total mass of ceramic powder and graphene oxide; the concentration of graphene oxide suspension is 0.10mg / mL .

[0042] S3: The ceramic powder is quickly added to the graphene oxide suspension, and stirred for the second time to obtain a mixed solution of graphene oxide and ceramic powder; the second stirring time is 25m...

Embodiment 2

[0047] The preparation method of the graphene oxide-ceramic composite powder of the present embodiment comprises the steps:

[0048] S1. Wet the graphene oxide with deionized water, then add deionized water to dilute, stir for the first time, and perform ultrasonic treatment to obtain a graphene oxide suspension; the wetting time is 10 minutes, and the time for ultrasonic treatment 60min, the ultrasonic power is 20KHz; the first stirring time is 10min, and the stirring speed is 800r / min.

[0049] S2. The quality of graphene oxide accounts for 2.0wt% of the total mass of ceramic powder and graphene oxide; the quality of ceramic powder accounts for 98wt% of the total mass of ceramic powder and graphene oxide; the concentration of graphene oxide suspension is 0.30mg / mL .

[0050] S3: The ceramic powder is quickly added to the graphene oxide suspension, and stirred for the second time to obtain a mixed solution of graphene oxide and ceramic powder; the time of the second stirring...

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Abstract

The invention relates to graphene oxide-ceramic composite powder and a preparation method thereof. The preparation method includes: using deionized water to wet graphene oxide, adding deionized waterto dilute, stirring for the first time, and ultrasonically treating to obtain a graphene oxide suspension; quickly adding ceramic powder into the graphene oxide suspension, and stirring for the secondtime to obtain mixed liquid of graphene oxide and the ceramic powder; performing suction filtering on the mixed liquid of graphene oxide and the ceramic powder to obtain mixed slurry, drying, and performing thermal reduction treatment to obtain the graphene oxide-ceramic composite powder, wherein the ceramic powder is made of a raw material of waste FCC catalyst. Preparation of the graphene oxide-ceramic composite powder reduces environment pollution and lowers enterprise cost, so that the objective of resource recycling is achieved. The ceramic powder and graphene oxide are mixed more uniformly and are good in dispersion performance; agglomeration of graphene oxide is avoided, and preparation cost is lowered; the preparation method is simple in process, convenient to operate, clean, efficient and suitable for large-scale production.

Description

technical field [0001] The present invention relates to a kind of ceramic composite material, more specifically, relate to a kind of graphene oxide-ceramic composite powder and preparation method thereof. Background technique [0002] Due to their high strength, high hardness, good wear resistance and high temperature resistance, ceramic materials have been highly valued by people and widely used in various fields, but the intrinsic brittleness of ceramic materials greatly restricts the further application of ceramic materials. Around how to improve the toughness of ceramic materials, scholars from various countries have studied a variety of toughening mechanisms, including phase transformation toughening, particle dispersion toughening, whisker composite toughening, and continuous fiber toughening. [0003] Graphene oxide is a carbon atom sp 2 Composed of hybrid orbitals, a hexagonal two-dimensional material with honeycomb lattice, has high specific surface area, high stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/626C04B35/577C04B35/565C04B35/622
CPCC04B35/565C04B35/62204C04B35/62625C04B35/6265C04B35/62655C04B2235/3463C04B2235/349C04B2235/365C04B2235/5436
Inventor 李丽萍
Owner 郴州国盛新材科技有限公司
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