Methyl Vinyl Polysilazane | SIOResin® SIO-9312

Many polymers offer functionality, yet SIO-9312 Polysilazane moves in a different league. At SIOResin, we designed this methyl vinyl polysilazane to carry a Si–N bonded backbone that responds quickly to various chemistries. Its structure holds reactive vinyl groups and adaptable Si–N bonds. The double bonds create open pathways for addition reactions and molecular tuning. The Si–N units engage instantly with hydroxyl-containing substances, giving the material the behavior of an amine-type curing agent. This duality brings unusual flexibility to formulation work. Under intense heat, the polymer shifts toward ceramic-like stability, maintaining integrity even at 600–800°C. It blends organosilicon processability with the resilience of inorganic materials, making SIO-9312 far more than a typical resin.

Unique Structure and Reactivity

SIO-9312 polysilazane resin contains Si–C=CH2 double bonds along its backbone. These unsaturated sites allow addition reactions and enable functional group introduction. At the same time, the Si–N bonds react readily with hydroxyl-containing substances. I often use it as an amine-type curing agent, combining reactivity with versatility. This polymer bridges the gap between organosilicon processability and inorganic high-temperature stability. It can withstand 600–800°C and serves as a pre-ceramic polymer, transforming into robust ceramic materials when pyrolyzed.

Price: USD $120/KG        Download TDS

Enhancing Resins and Coatings

We can frequently apply SIO-9312 in resin modification. Its vinyl groups react with unsaturated resins such as polybutadiene or unsaturated polyester, boosting crosslinking density and thermal resistance.

For hydroxyl-containing resins like epoxy or phenolic, the Si–N bonds participate in curing. I observe an increase in glass transition temperature (Tg) by 20–30%. Weatherability and UV resistance also improve. This makes SIO-9312 ideal for high-performance coatings and functional resin systems.

Applications in Rubber Industry

In silicone rubber, SIO-9312 acts as a processing aid. It refines microstructure, raising heat resistance by over 50°C. Tensile strength and abrasion resistance also improve.

I use it with synthetic rubbers such as SBR and NBR. The introduction of silazane structures enhances both thermal and mechanical performance, making rubber components more durable under harsh conditions.

Ceramic Precursors and High-Temperature Components

SIO-9312 is also a precursor for SiC/Si3N4 composite ceramics. These materials are perfect for aerospace engines and other high-temperature applications.

In coatings, derivatives form dense protective layers, resisting corrosion and oxidation. Components maintain performance even under extreme thermal or chemical conditions.

Methyl Vinyl Polysilazane Technical Specifications and Curing

SIO-9312 Methyl Vinyl Polysilazane is a pale yellow to colorless transparent liquid. Its viscosity ensures easy processing. Active content is ≥95%, and solid content exceeds 96%. Hardness is ≥4H, adhesion is excellent (Grade 0), and salt spray resistance surpasses 800 hours.

For curing, We recommend:

• 165°C: surface dry in 1 h, full cure 1 h
• 180°C: surface dry 0.2 h, full cure 1 h
• 200°C: surface dry 0.1 h, full cure 0.5 h
• 250°C: surface dry 0.1 h, full cure 0.5 h

For applications below 400°C, bake at 180°C for 30 min after 10 min air dry. For higher temperatures, 250°C for 30 min is recommended.

Application Instructions

Surface preparation is critical. we always:

• Sandblast or grind to remove rust, oil, and oxide scale.
• Clean thoroughly with degreasers. Ensure surfaces are dry.
• Shake and filter the single-component liquid before use.
• Apply by spray (0.5–1.0 mm nozzle) for uniform coating.

Leftover material should never be reused. Dispose of according to local regulations.

Why our SIO-9312 Stands Out

Choosing SIO-9312 methyl vinyl polysilazane for its versatility and reliability. It enhances resins, improves rubber performance, and serves as a high-quality ceramic precursor.

At SIOResin, we believe in materials that perform under extreme conditions. SIO-9312 helps engineers and chemists create coatings, rubbers, and ceramics that excel where it matters most. For technical inquiries or sample requests, contact us today. We are eager to help you explore its full potential.

About SIOResin

SIOResin(Guangzhou SIO New Material) is a leading manufacture specializing in developping sustainable products and technologies in new material field. We provide professional solutions regarding water-based polyurethane, water-based acrylic resin, water-based UV-curing resin, silicone resin, additives and curing Agents etc., which have been widely applied in various industries, such as coatings, cosmetics, textiles, biology, automotive and other high-tech industries.

Please feel free to contact us via Email sales@sioresin.com if you would like to learn more about our products or request samples!