Compared with other ceramic precursors, polysilazane has the following significant advantages:
High ceramic yield
Many ceramic precursors undergo significant loss of volatile components during the thermal decomposition process, resulting in relatively low ceramic yields. When subjected to high-temperature cracking and other treatments, polysilazane can maintain a high ceramic yield, which means that raw materials can be more efficiently utilized to prepare sufficient amounts of target ceramic materials. This can effectively reduce costs and improve production efficiency in large-scale industrial production of ceramic products.
Good processability
There are various molding methods: Polysilazane usually has suitable rheological properties and can be prepared into ceramic precursor bodies of the desired shape through various molding processes, such as common methods such as solution impregnation, spin coating, injection molding, and 3D printing. Compared to some other ceramic precursors, this is more flexible in forming complex shaped ceramic components and can meet the diverse needs of ceramic product shapes in different application scenarios.
Can be modified: It is easy to introduce different functional groups through chemical modification, which can adjust its curing behavior, cracking characteristics, and compatibility with other materials. For example, adding specific organic groups to improve its solubility and facilitate subsequent processing operations; Alternatively, elements that contribute to ceramic phase stability can be introduced to optimize the performance of the final ceramic product. This modifiable feature enables it to better adapt to various complex ceramic preparation requirements.
Can form high-quality ceramic microstructures
Good structural uniformity: During the pyrolysis conversion process, polysilazane can decompose uniformly and generate ceramic phases, resulting in a ceramic material with good uniformity in microstructure, avoiding uneven ceramic properties caused by local composition differences, structural defects, and other issues. This uniform microstructure is crucial for improving the mechanical and thermal properties of ceramics. For example, in the preparation of high-strength and high toughness silicon nitride ceramics, a uniform structure can better leverage its intrinsic performance advantages.
Controllable ceramic phase composition: Polysilazane can accurately control the phase composition of the generated ceramics through reasonable selection of raw material composition, control of pyrolysis process parameters, and other means, such as precise control of the proportion of different crystal phases in silicon nitride ceramics, thereby achieving fine control of ceramic material properties and meeting the stringent requirements for ceramic material properties in high-end fields such as aerospace.
Wide applicability
Preparation of various ceramic materials: It can not only be used to prepare common high-performance ceramics such as silicon nitride (Si β N β), silicon carbide (SiC), etc., but also expand the preparation of more types of ceramic materials with special properties by introducing other elements or composite with other compounds, providing a broader space for the development of new ceramic products to meet the diverse needs of ceramic properties in different industrial fields.
Can be combined with other materials: Polysilazane can be easily combined with other inorganic and organic materials to form ceramic based composite materials. For example, by combining with carbon fiber, composite materials with the advantages of high temperature resistance, high strength of ceramics, and high toughness of carbon fiber can be prepared, which broadens their application scope as structural materials in aerospace, automotive and other fields. However, some other ceramic precursors may face compatibility issues when combined with other materials, limiting their application expansion.
Room termperature curing polysilazane, pls check
IOTA 9150, IOTA 9150K.
High termperature curing polysilazane, pls check
IOTA 9108,
IOTA 9118.