Introduction
Polycarbosilane is a polymer compound, the main chain of which is composed of alternating silicon and carbon atoms, connected with hydrogen or organic groups, and the molecular chain is linear or branched. Polycarbosilane is an important compound in the precursor ceramic polymer, which is an emerging high-tech new material, mainly used to prepare high-tech ceramic materials of the silicon carbide series, among which silicon carbide fiber is representative. Polycarbosilane is easily heated, and the silicon-hydrogen bonds in the molecular chain can be cross-linked.
Technical parameters of polycarbosilane
| Parameter name | Parameter value |
| Product appearance | Light yellow transparent solid |
| Oxygen content（wt%） | ≤0.6 |
| Softening point,℃ | 200-230 |
| Molecular weight distribution | 1100-2000 |
| Molecular weight dispersion coefficient | 2.0-2.8 |
| Ceramic yield,% | ≥55 |
It is widely used in the preparation of ceramic and matrix composite materials. Polycarbosilane and fiber are important precursors and reinforcing and toughening materials for ceramic matrix composite materials, respectively. It has many advantages such as wear resistance, corrosion resistance, oxidation resistance, high temperature resistance, high conductivity, etc., and has become one of the most promising high-performance materials.