IOTA-PHPS Perhydropolysilazane Liquid Coating Material: Inorganic Hydrophilic, Super-Hard, Stain-Resistant Nano-Coating | IOTA


In the field of perhydropolysilazane liquid coating materials, **IOTA-PHPS** has garnered attention as a product based on inorganic (perhydro) polysilazane (PHPS) technology. This material is characterized as a hydrophilic, super-hard, and stain-resistant nano-coating material. Product specifications indicate that the coating is formulated with perhydropolysilazane **IOTA-PHPS** as the primary component, diluted in a solvent.


IOTA-PHPS Technical Parameters


| Property | Parameter |
|---|---|
| Appearance | Colorless, transparent liquid |
| Solids content | 20% |
| Solvent | n-Butyl ether |
| Density (100% liquid) | 1.16–1.31 g/mL |
| Density (20% liquid) | 0.82–0.84 g/mL |
| Density (after curing) | 1.6–2.0 g/mL |


## IOTA-PHPS Curing Mechanism and Conditions


The curing of this coating material proceeds primarily through the **hydrolysis of Si-N bonds**. The mechanism is outlined below; please refer to the IOTA-PHPS technical documentation for specific reaction equations. | Curing Method | Conditions |
|---|---|
| Room Temperature | Cure for 7+ days |
| Moisture Curing | 90% humidity, 150°C, 2 hours |


## IOTA-PHPS Coating Properties


| Property | Specification |
|---|---|
| Composition | SiOx |
| Coating Thickness (nm) | >100 |
| Hardness (GPa) | 3 (ammonia curing); 8–10 (high-temperature curing) |
| Elastic Modulus (GPa) | 60 (ammonia curing); 100–130 (high-temperature curing) |
| Pencil Hardness | 9H (Zhonghua); 6H (Mitsubishi) |
| Transparency (Visible Light) | >90% |
| Adhesion (Cross-hatch Test) | Grade 0 |
| Temperature Resistance (Air) | 800°C |
| Rust, Alkali, and Saltwater Resistance | Excellent |
| Acid Resistance (10% HCl) | Moderate/Weak (approx. one month) |


## IOTA-PHPS Application Areas


- Anti-graffiti for buildings
- Precious metal anti-corrosion
- Rail transportation
- Semiconductor insulation layers
- Electronic circuits
- Gas and water barrier for plastic packaging


## IOTA-PHPS Packaging, Application, and Cleaning


**Packaging:** Sealed metal drums (0.5–10 L) based on customer requirements; typically formulated with xylene, dibutyl ether, or dichloromethane; solids content 2–20%.


**Application Method:** Clean the substrate surface first. Apply the coating via spin coating, wiping, spraying, or dip coating, followed by curing at room temperature or high temperature.


**Cleaning:** Once cured, IOTA-PHPS cannot be removed by solvents. ## IOTA-PHPS: Storage and Precautions


**Storage:** Store at low temperatures (below 10°C). The shelf life for unopened IOTA-PHPS is 1 year for the domestic market and 6 months for international markets; once opened, the product should be used up as soon as possible.


**Precautions:** Polysilazane must be used in a well-ventilated, dry environment with appropriate protective measures (e.g., gloves, masks, and safety goggles). Keep uncured IOTA-PHPS away from sources of ignition, humid air, and water. Please consult professionals regarding the disposal of waste liquid.


CHINACOAT
China International Coatings Show
November 11–13, 2026 | Guangzhou
Welcome to visit our booth
Hall 6.1, Booth 6.1D59