Summary: 'Nano-ceramic' is usually a sol-gel / silane organic-inorganic hybrid (ORMOSIL): hydrolysis-condensation forms a Si-O-Si network for hardness and heat resistance, while the organic phase gives flexibility and adhesion.
Mechanism
The more continuous the inorganic network, the harder and heat-resistant but more brittle and cracking-prone; organic modification adds toughness at the cost of hardness/heat — ratio and cure set the balance.
Key data
- Hardness (pencil or nano-indentation) rises with the inorganic phase.
- Heat resistance rises with inorganic content; fully organic systems are limited.
- Low toughness cracks thick films — control thickness and cure.
Balance
| Tendency | Result |
|---|---|
| High inorganic | Hard, heat-resistant, brittle |
| High organic | Tough, adhesive, lower heat |
Defects & fixes
- Cracking: too brittle / thick — more organic, thinner coat.
- Low hardness: too much organic — raise inorganic / cure.
- Poor adhesion: substrate or cure off — treat + match cure.
FAQ
Is it real ceramic?
No — a sol-gel hybrid film whose Si-O network gives ceramic-like hardness/heat.
How heat-resistant?
Most organic hybrids limited to a few hundred °C; pure inorganic higher but brittle.
Why crack?
High inorganic continuity is brittle; need organic toughening or thin coats.
Ref: sol-gel / ORMOSIL coating mechanisms (public).
Kexin New Materials (Guangdong) Co., Ltd. · 2026-09-18