Method for uniformly introducing ultrahigh-temperature ceramic component to braided three-dimensional carbon fibers with high content
A carbon fiber braided, ultra-high temperature ceramic technology, applied in the field of ultra-high temperature structural materials, can solve the problems of long process cycle, uneven distribution of ultra-high temperature ceramics, low component content, etc. The effect of efficiency
Active Publication Date: 2018-06-29
HARBIN INST OF TECH
3 Cites 6 Cited by
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A method for uniformly introducing an ultrahigh-temperature ceramic component to braided three-dimensional carbon fibers with high content. The invention belongs to the field of ultrahigh temperaturestructural materials and solves the problems of non-uniform distribution and low content of the ultrahigh-temperature ceramic component in the similar methods in the prior art. The method includes following steps: 1) mixing ultrahigh-temperature ceramic powder with anhydrous ethanol and polyacrylic acid to obtain ultrahigh-temperature ceramic slurry; 2) injecting the ceramic slurry into interior of the braided carbon fiber via an injection apparatus and performing ultrasonic vibration, and continuously injecting the slurry to complete vibration-assisted slurry injection process; 3) adding theultrahigh-temperature ceramic slurry and a green body to a reactor, performing vacuum impregnation and then ultrasonic vibration to complete vibration-assisted ultrasonic vibration. Through compositeprocess of the vibration-assisted slurry injection process and the vibration-assisted ultrasonic vibration, the ceramic slurry can be completely and uniformly dispersed in carbon fiber frameworks under effect of the ultrasonic high-frequency vibration. The product is high in ceramic content and is short in process period.
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Property | Measurement | Unit |
The average particle size | 200.0 | nm |
The average particle size | 500.0 | nm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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