Carbon/carbon composites based on a polyimide matrix with coal tar pitch |
| |
Authors: | VE YudinMYa Goykhman K BalikP Glogar P PolivkaGN Gubanova VV Kudryavtsev |
| |
Affiliation: | a Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bol’shoy pr. 31, St. Petersburg 199004, Russia b Institute of Rock Structure and Mechanics, Academy of Sciences of the Czech Republic, V Holesovickach 41, 18209 Prague 8, Czech Republic |
| |
Abstract: | Blending of coal tar pitch with a polyimide precursor based on acetyl derivatives of aromatic diamines during its synthesis leads to a homogeneous, highly thermostable matrix for carbon fibre reinforced composites. If the weight content of the pitch in the polyimide matrix does not exceed 40%, the mechanical properties (flexural strength, shear modulus and fracture toughness) of these composites are comparable to those of similar composites based on a pure polyimide matrix. Carbonisation and graphitisation of the composites with a properly blended matrix precursor leads to carbon fibre reinforced carbon composites with lower open porosity and higher density, elastic modulus and flexural strength than those of composites based on a pure polyimide matrix. |
| |
Keywords: | A Carbon/carbon composites Pitch Resins D Mechanical properties Reaction kinetics |
本文献已被 ScienceDirect 等数据库收录! |
|