What is SIO-9915 Polyborosilazane Resin (PBSZ)?

SIO-9915 is a high-performance polyborosilazane resin (PBSZ) designed as a ceramic precursor for SiBCN materials. Through pyrolysis conversion under nitrogen atmosphere above 600°C, it forms stable Si–N, B–N, and B–C–N ceramic networks with excellent high-temperature stability, oxidation resistance, and thermal shock resistance.

What are the key performance advantages of SIO-9915?

Key advantages include excellent high-temperature resistance, outstanding oxidation and corrosion resistance, superior electrical insulation (volume resistivity ≥10¹³ Ω·m, dielectric strength ≥105 V/mm), exceptional gas barrier properties, and salt spray resistance exceeding 3000 hours.

What applications is SIO-9915 suitable for?

SIO-9915 is ideal for high-temperature protective coatings, ceramic coatings, inorganic heat-resistant coatings, metal corrosion protection, electrical insulation for electronic components, aerospace composite protection, high-temperature sealing/barrier materials, and ceramic matrix composites (CMC).

How is SIO-9915 applied and cured?

The standard process is: surface cleaning → surface roughening → cleaning and drying → coating application → curing. It is a single-component system, filtered through 120-mesh before use. Curing temperature ranges from 20–220°C, with room-temperature curing taking over 24 hours and heating at 85–180°C accelerating the process. Nitrogen ceramic conversion requires a controlled heating profile above 600°C.

How should SIO-9915 be stored and handled?

Store in a cool, dry, ventilated area below 30°C (preferably 0–20°C). Shelf life is 12 months unopened. Do not mix waste with protonic substances (water, alcohols). Wear solvent-resistant gloves (butyl rubber), safety goggles, and A2 B2 E2 K2 Hg/P3 respirators during application. Keep out of reach of children.

What is the price and packaging of SIO-9915?

SIO-9915 is priced at $500.00 per kilogram. It is available in 1kg, 2kg, and 3kg sealed containers. Contact SIOResin directly for bulk orders or customized packaging inquiries.

Polyborosilazane Resin (PBSZ) | SiBCN Ceramic Precursor

Polyborosilazane Resin (PBSZ) | SIOResin® SIO-9915

SIO-9915 Polyborosilazane Resin (PBSZ) is a high-performance ceramic precursor resin designed for the preparation of advanced SiBCN (silicon boron carbon nitride) ceramic materials through pyrolysis conversion. With the incorporation of boron, polyborosilazane resin forms stable Si–N, B–N, and B–C–N ceramic networks, providing excellent high-temperature stability, oxidation resistance, creep resistance, and thermal shock resistance. The resulting SiBCN ceramics maintain outstanding structural integrity under extreme conditions.

SIO-9915 offers excellent electrical insulation, gas barrier performance, radiation resistance, and thermal stability, making it suitable for advanced ceramic coatings, electronic component protection, sealing materials, gas barrier films, and aerospace high-temperature applications.

Price: $500.00/kg Inquiry Now

TDS

Performance Characteristics

Excellent high-temperature resistance
Good oxidation resistance
Excellent corrosion resistance
Good hydrophobic properties
Good chemical resistance
Excellent electrical insulation performance
Excellent gas barrier properties

Main Technical Indicators

Appearance

Light yellow to colorless transparent liquid

Viscosity (Ford Cup No.4, 25°C)

10-20 S

Solid Content

≥75%

Density

0.95–1.05 g/cm³

Volume Resistivity

≥10¹³ Ω·m

Pencil Hardness

6H-9H (24h)

Adhesion

Grade 0 (crosshatch test)

Salt Spray Resistance

> 3000 h

Dielectric Strength

≥ 105 V/mm

Wear Resistance after Nitrogen Ceramic Conversion

5000 cycles without substrate exposure

Application Areas

High-temperature protective coatings
Ceramic coatings
Inorganic heat-resistant coatings
Metal corrosion protection coatings
Electrical insulation protection for electronic components
Aerospace composite material protection
High-temperature sealing and barrier materials
Ceramic matrix composites (CMC)

Processing Parameters

Coating Solid Content

>75%

Theoretical coverage

8–15 m²/kg

Dry Film Thickness

15–30 µm

Curing temperature

20–220 °C

Curing time

1-24 h

Pot life (h)

4 h

Recommended diluents

Alkanes, esters, ethers

Nitrogen Ceramic Conversion Temperature

> 600 ℃

Application Method

Standard Application Process: Surface Cleaning → Surface Roughening → Cleaning and Drying → Coating Application → Curing

Instructions for Use:

1. Surface Preparation: Sand or grit blast the substrate to remove rust, dust, and contaminants. Sa2.5 is recommended, with St3 as the minimum requirement (GB/T 30790.4-2014).
2. Cleaning & Drying: Clean the surface with suitable agents and ensure the substrate is completely dry before application.
3. Coating Preparation: This is a single-component system. Filter through a 120-mesh filter before use.
4. Coating Application: A 1.0 mm spray nozzle is recommended for uniform coating appearance. Recoating is not recommended after curing due to hydrophobic and oleophobic properties.
5. Curing: Room-temperature curing requires more than 24 hours. Heating at 85–180°C can accelerate curing. Nitrogen-atmosphere ceramic conversion requires a controlled heating profile.

Precautions

1. Always follow the product’s Material Safety Data Sheet (MSDS).
2. Wear solvent-resistant gloves (e.g., butyl rubber), safety goggles, and appropriate A2 B2 E2 K2 Hg/P3 respirators.
3. Keep out of reach of children.
4. Store in a cool, dry, ventilated area below 30°C.
5. Do not mix waste with protonic substances (e.g., water, alcohols). Dispose of waste at authorized facilities.

Packaging and Storage

1. Available in: 1kg, 2kg, 25kg sealed containers
2. Store in a dry, cool, well-ventilated area (0–20°C), away from heat and ignition sources.
3. Shelf life: 12 months (unopened)

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