Hybrid Preceramic Polymer Crosslinking for Higher Ceramic Yield

The patent applies preliminary action by performing crosslinking of preceramic polymers before pyrolysis treatment. The crosslinking step is conducted in advance to form a three-dimensional network structure that enhances thermal stability and structural integrity during subsequent pyrolysis, while controlling the crosslinking conditions to minimize volatile element loss and maximize ceramic yield.

The patent employs parameter changes by systematically varying crosslinking parameters such as crosslinking density, crosslinker type, and photopolymerization conditions to optimize the balance between structural integrity and ceramic yield. By adjusting these parameters, the patent achieves controlled conversion of preceramic polymers into ceramic materials with desired properties.

The patent applies preliminary action by pre-crosslinking the preceramic polymer network before pyrolysis. This preliminary crosslinking step creates a stable three-dimensional structure that reduces the energy required during subsequent pyrolysis to achieve desired ceramic properties, as the crosslinked network already provides thermal stability that reduces the intensity and duration of heating needed.

The patent uses parameter changes by optimizing crosslinking density and type to minimize the energy input required during pyrolysis. By selecting appropriate crosslinkers and controlling crosslinking extent, the patent creates a network that enhances thermal stability while requiring less energy for the phase transformation and volatile removal processes during pyrolysis.

The patent applies the intermediary principle by using photoinitiators as mediator molecules that absorb light and initiate crosslinking reactions. The photoinitiators act as intermediaries between the light source and the preceramic polymer, enabling controlled crosslinking through photopolymerization. This allows precise control over crosslinking spatial distribution and timing while managing the complexity of the photopolymerization system.

The patent replaces mechanical mixing or thermal heating methods with photopolymerization to control crosslinking. Instead of using mechanical means to mix crosslinkers or thermal heating to initiate reactions, the patent uses light activation through photoinitiators to trigger crosslinking, providing superior spatial and temporal control with reduced system complexity compared to mechanical alternatives.