JPS6490291A - Production of bulk mesophase pitch for c/c composite material - Google Patents
Production of bulk mesophase pitch for c/c composite materialInfo
- Publication number
- JPS6490291A JPS6490291A JP24574887A JP24574887A JPS6490291A JP S6490291 A JPS6490291 A JP S6490291A JP 24574887 A JP24574887 A JP 24574887A JP 24574887 A JP24574887 A JP 24574887A JP S6490291 A JPS6490291 A JP S6490291A
- Authority
- JP
- Japan
- Prior art keywords
- pitch
- composite material
- hydrogenated
- bulk mesophase
- mesophase pitch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Working-Up Tar And Pitch (AREA)
Abstract
PURPOSE:To simply and effectively prepare bulk mesophase pitch having a quality suitable for use a matrix carbon precursor for a C/C composite material, by conducting hydrogenation of starting pitch, regulation of the beta-resin content of the hydrogenated pitch and optimization of heat treating conditions. CONSTITUTION:Bulk mesophase pitch for a C/C composite material exhibiting a percentage residual carbon of 90% or more at 600 deg.C and a viscosity of 100P at 350-400 deg.C is prepared by the following method. Coal tar pitch is hydrogenated to lower the oxygen content to 1.0wt.%. Low-boiling components are removed by solvent extraction, distillation, or a combination thereof of the hydrogenated coal tar pitch thus obtd. to prepare pitch having a beta-resin content of 20-70wt.%. The prepd. pitch is heat treated at 530 deg.C or below while blowing an inert gas into the system or under a reduced pressure or under conditions of a combination thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24574887A JPS6490291A (en) | 1987-10-01 | 1987-10-01 | Production of bulk mesophase pitch for c/c composite material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24574887A JPS6490291A (en) | 1987-10-01 | 1987-10-01 | Production of bulk mesophase pitch for c/c composite material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6490291A true JPS6490291A (en) | 1989-04-06 |
Family
ID=17138209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24574887A Pending JPS6490291A (en) | 1987-10-01 | 1987-10-01 | Production of bulk mesophase pitch for c/c composite material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6490291A (en) |
-
1987
- 1987-10-01 JP JP24574887A patent/JPS6490291A/en active Pending
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