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Rapid densification method of carbon/carbon composite material
The invention discloses a rapid densification method of a carbon/carbon composite material. The rapid densification method comprises the following steps: (1) densifying a carbon fiber full-mesh felt with an initial density of 0.15-0.20 g/cm<3> to 0.8-1.5 g/cm<3>, and controlling the pyrolytic carbon microstructure of a matrix as a rough layer structure pyrolytic carbon; (2) vacuumizing to 10<-2> Pa by adopting an SPS furnace, rapidly heating the carbon/carbon composite material to 1600-2200 DEG C, slowly pressurizing to 30-40 MPa, controlling the heating speed within 100-200 DEG C/min and controlling the pressurizing speed within 0.5-1 MPa/min; (3) preserving the heat and the pressure for 10-30 min, cooling, releasing the pressure, controlling the cooling speed within 80-100 DEG C/min and controlling the pressure releasing speed within 1-2 MPa/min so as to finish the densification process of the carbon/carbon composite material and prepare a pyrolytic carbon-based carbon/carbon composite material with a density of 1.6-1.8 g/cm<3>.
Rapid densification method of carbon/carbon composite material
The invention discloses a rapid densification method of a carbon/carbon composite material. The rapid densification method comprises the following steps: (1) densifying a carbon fiber full-mesh felt with an initial density of 0.15-0.20 g/cm<3> to 0.8-1.5 g/cm<3>, and controlling the pyrolytic carbon microstructure of a matrix as a rough layer structure pyrolytic carbon; (2) vacuumizing to 10<-2> Pa by adopting an SPS furnace, rapidly heating the carbon/carbon composite material to 1600-2200 DEG C, slowly pressurizing to 30-40 MPa, controlling the heating speed within 100-200 DEG C/min and controlling the pressurizing speed within 0.5-1 MPa/min; (3) preserving the heat and the pressure for 10-30 min, cooling, releasing the pressure, controlling the cooling speed within 80-100 DEG C/min and controlling the pressure releasing speed within 1-2 MPa/min so as to finish the densification process of the carbon/carbon composite material and prepare a pyrolytic carbon-based carbon/carbon composite material with a density of 1.6-1.8 g/cm<3>.
Rapid densification method of carbon/carbon composite material
ZHANG FUQIN (author) / LIU YI (author) / ZHENG JIXIANG (author) / WANG XINGXING (author) / LI BINGQIAN (author) / XIA LIHONG (author)
2015-04-29
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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