Silicone Resin

Basic Product Information

• Product Name: Silicone Resin
• Chemical Name: Polysiloxane
• Appearance: Colorless Transparent Liquid

Chemical Properties

• Excellent Thermal Stability:

High Si-O bond energy (452 kJ/mol) enables long-term service at 200–300°C, with some grades tolerating higher temperatures without decomposition.

• Chemical Resistance:

Stable molecular structure resists acids, alkalis, and solvents (tested per ASTM D543 at 10% concentration for 168h), providing substrate protection.

• Oxidation Resistance:

Maintains performance stability in oxidative environments due to inert siloxane backbone (O₂ exposure tests show <5% property change after 1000h at 150°C).

• Reactive Functionality:

Contains hydroxyl/vinyl groups (typically 2–5 wt%) for crosslinking customization, allowing property optimization via:

Hydrosilylation

Condensation curing

Free radical reactions

Physical Properties

• Versatile Forms:

Liquid (viscosity 50–10,000 mPa·s at 25°C)

Solid (powder: 20–100 μm; pellets: 1–3 mm)

• Solubility:

Compatible with toluene, xylene, and ketones (solubility ≥30 wt%), facilitating coating formulations.

• Electrical Insulation:

Dielectric constant: 2.6–3.2 (1 MHz, ASTM D150)

Volume resistivity: >10¹⁵ Ω·cm (IEC 60093)

• Low Surface Energy:

Surface tension: 20–24 mN/m (vs. water’s 72 mN/m) ensures superior substrate wetting (contact angle <10° on metals).

• Tunable Mechanical Properties:

Cured characteristics adjustable via formulation:

Hardness: Shore A 20–90 (ASTM D2240)

Elongation: 50–300% (ASTM D412)

Taber abrasion: <50 mg/1000 cycles (CS-10 wheel, 1kg load)

Product Functions

• Improve Insulation Performance: Significantly enhances the insulation rating of electronic components, ensuring safe operation of equipment in high-voltage and high-temperature environments.
• Enhance Weather Resistance: Effectively withstands environmental factors such as ultraviolet rays and moisture, prolonging the service life of electronic devices.
• Optimize Heat Dissipation: Some silicone resins have thermal conductivity properties, which help dissipate heat from electronic components and improve stability.
• Protection and Encapsulation: Provides reliable encapsulation protection for circuit boards, chips, etc., preventing physical damage and chemical corrosion.

Applications

• Semiconductor Packaging: Used for chip encapsulation, providing high insulation and high-temperature resistance.
• High-voltage Cable Insulation: Improves the insulation rating and weather resistance of cables, suitable for the power transmission field.
• Electronic Component Coating: Protects components such as circuit boards and capacitors from moisture, corrosion, and high temperatures.
• LED Encapsulation: Features high light transmittance and UV resistance, ensuring long-term stable light emission of LEDs.
• New Energy Battery Protection: Used as fire-resistant insulating coatings for lithium batteries and fuel cells, improving safety.

Core Advantages

Market Value

• Core Performance Value Dimensions
• Extreme Environment Stability:

Temperature Resistance Range: -60°C to 300°C (short-term resistance to 500°C)

Dielectric Strength: >20 kV/mm (1mm thickness)

Volume Resistivity: >10¹⁵ Ω·cm (at 200°C)

• Electrical Reliability:

Dielectric Constant (1MHz): 2.8–3.2

Dissipation Factor: <0.002

Arc Resistance: >180 seconds (ASTM D495)

• Process Adaptability:

Viscosity Adjustment Range: 500–50,000 cP (25°C)

Diverse Curing Methods: Thermal/UV/moisture curing

Adhesive Strength with Metal/Ceramic: >10 MPa

• Market Driver Matrix
• Technical Upgradation Demand:

Global Power Electronics Market CAGR: 9.8% (2023–2028)

5G Base Station Construction Density Increase: 30–50%

High-voltage System Voltage Platform in Electric Vehicles Upgraded to 800V+

• Material Substitution Trends:

Substitution Space for Traditional Epoxy Resins: $3.5B (2025)

Premium Pricing Capability for High-end Products: 40–60%

Promotion Driven by Halogen-free Material Regulations

• Economic Benefits:

Device Lifespan Extended by 2–3 Times

System Energy Consumption Reduced by 15–20%

Maintenance Costs Decreased by 30–40%

Experimental Data and Case Studies

Experimental Data

Case Studies

• High-Voltage Cable Insulation Coating

Issue: Traditional insulation materials degrade easily in high-temperature, high-humidity environments, leading to cable failures.

Solution: Applied silicone resin insulation coating.

Result: Cable lifespan extended to 20 years, with 80% reduction in failure rate.

• LED Encapsulation Material

Requirement: Address LED brightness decay caused by UV exposure and high temperatures.

Solution: High-transparency silicone resin encapsulation.

Effect: >95% brightness retention after 5 years, far exceeding industry standards.

• New Energy Vehicle Battery Module Encapsulation

Issue: Battery packs prone to short circuits under high temperatures.

Solution: Flame-retardant silicone resin encapsulation (oxygen index ≥30%).

Effect: Flame resistance extended to 20 minutes, significantly surpassing national standards.

Preparation Process, Core Technologies, and Precautions

Ultra-Pure Preparation Process System

• Catalytic Synthesis System:
• Platinum-based nanocatalysts (particle size 2-5 nm, 50-100 ppm)
• Supercritical CO₂ reaction medium (35 MPa, 60°C)
• Microchannel continuous flow process (liquid holdup <50 mL)
• Deep Purification Technology:
• Molecular distillation (residual pressure <1 Pa)
• Combined ion exchange-chelating (Na⁺ <0.1 ppb)
• Ultrafiltration system (10-100 nm)
• Nanocomposite Technology:
• In-situ surface modification
• Ultrasonic-high pressure synergistic dispersion
• Directional assembly process

Breakthrough Core Technologies

• Dielectric Regulation Technology:
• Adjustable dielectric constant range (2.8-4.5)
• Dielectric loss control (<0.002)
• Space charge suppression
• Interface Engineering:
• Metal/ceramic surface coupling
• Nanoscale interfacial transition layer
• Stress buffer structure
• Reliability Enhancement:
• Electrical treeing inhibition
• Partial discharge protection
• Aging failure预警 (Note: “预警” is typically translated as “early warning” or “failure prediction”)

Precautions

• Storage: Keep in a cool, sealed environment at 5-25°C, shelf life 12 months.
• Safety: Wear N95 masks and goggles during operation, ensure adequate ventilation.

Packaging & Ordering

Packaging: 200kg/1000kg plastic drums (customizable).