Polymer-derived ceramics live or die on the precursor: ceramic yield sets your economics, reactive-group chemistry sets your crosslinking route, and purity sets what the electronics and fiber industries will accept. Sourcing all of that from one supplier — monomers through film-grade polymers — is rarer than the literature suggests.
Our precursor line spans the full synthesis chain. Cyclic monomers (HMCTS, OMCTS) feed ring-opening polymerization for high-purity polysilazanes with controlled architecture; low-to-mid MW methylhydro- and methylvinylsilazanes supply Si-H and vinyl reactivity for crosslinking and hydrosilylation; high-MW grades form coherent films and high-char matrices. Compounded vinyl/Si-H systems exceed 75% ceramic yield.
Thermal conversion is supported, not just supplied: pyrolysis toward SiCNO, SiCN or silica phases depends on atmosphere, ramp and precursor design — parameters we provide as starting profiles with every sample.
Service Conditions Covered
| Target ceramics | SiCNO / SiCN / silica phases; Si-C-N ceramic fibers, coatings, and matrix composites (CMC) |
| Ceramic yield | >75% from compounded vinyl/Si-H precursor systems (SILZ-351 + SILZ-701 class) |
| Reactive chemistry | Si-H (hydrosilylation), Si-vinyl (addition), Si-N (hydroxyl-reactive); ring-opening polymerization from cyclic monomers |
| Purity & documentation | Monomers ≥96% with public CAS numbers, TDS/SDS/batch COA; qualification lots for semiconductor-bound supply |
| Processing | Cure 165–250 °C; pyrolysis schedules application-specific (air/nitrogen), starting profiles provided |
Recommended Products & Why
| Grade | Format | Curing | Service Temp. | Why this grade |
|---|---|---|---|---|
| SILZ-701 | — | 165–250 °C | — | The Si-H workhorse: low-to-mid MW for dosing and impregnation, and one half of the >75%-yield compounded pair. |
| SILZ-351 | — | 165–250 °C | — | The vinyl half of the pair: low-viscosity addition-reaction platform for crosslinking before pyrolysis and custom intermediate synthesis. |
| SILZ-350 | — | 180–250 °C | -30 to 300 °C (continuous 350 °C, max 500 °C) | Si-H plus vinyl in one high-MW molecule — self-contained crosslinking with film-grade integrity for coating-route ceramics. |
| SILZ-702 | — | 180–250 °C | -30 to 300 °C (continuous 350 °C, max 500 °C) | High-MW methylhydrosilazane for coherent films and high char: the coating-first precursor with 350 °C interim service. |
| SILZ-CY-3 | Liquid cyclic trimer (HMCTS) | — | — | Liquid HMCTS monomer: the ring-opening entry to high-purity polysilazane synthesis with the simplest handling. |
| SILZ-CY-4 | Solid cyclic tetramer (OMCTS) | — | — | Solid OMCTS monomer: defined 225 °C boiling point for distillation-purified workflows and tetramer-based architectures. |
Format, curing and temperature values from each product's TDS.
Surface Preparation & Application Principles
Design the crosslink before the pyrolysis: precursors that gel via vinyl/Si-H addition before ceramization retain mass and shape, which is where the >75% yield figure comes from. We provide compounding ratios and catalysis starting points.
Atmosphere decides the phase: oxygen-bearing schedules trend toward SiCNO/silica, inert and nitrogen routes preserve SiCN. Ramp rates control shrinkage cracking in films and fibers — start from our profiles, then optimize on your furnace.
Moisture is the purity tax: all Si-N feedstocks hydrolyze on damp handling. Dry transfer, sealed storage and inert charging protect both your yield and your specifications.
Applicability Boundaries & What We Confirm
- Ceramic yield figures refer to compounded, crosslinked systems under stated pyrolysis conditions — neat, uncrosslinked precursors run lower.
- Semiconductor-grade specification windows beyond the standard ≥96% purity are handled as qualification lots with agreed analytics, not off-the-shelf.
- Fiber spinning, CMC infiltration and photovoltaic barrier processes each impose proprietary constraints: we support development under application agreements rather than publishing one-size parameters.
- What we confirm: target ceramic phase and use, required yield, your crosslinking and pyrolysis capability, purity specification, and annual volume trajectory.
Discuss your project with an engineer
Send your substrate, service conditions and current coating problem — we reply with a concrete system proposal within 1 business day.