1. Product Overview & Specifications

Chemical Profile

Product Name: Vinyl Terminated Poly-phenylmethylsiloxane
CAS No.: 225927-21-9
Molecular Formula: (C6H5SiO1.5)n(CH2=CHSiO1.5)m
Appearance: Clear viscous liquid
Viscosity: 500-5,000 mPa·s (25°C)
Density: 1.05-1.15 g/cm³
Flash Point: >200°C
Applications: Silicone rubber, electronic encapsulants, high-temperature lubricants.

Comparative Analysis

2. Key Applications & Use Cases

Industrial Applications

• Electronics: Encapsulation of high-power LED modules
• Automotive: Gaskets for engine components
• Aerospace: Thermal interface materials

Functional Advantages

• Superior UV resistance for outdoor applications
• Low volatility at elevated temperatures
• Enhanced compatibility with platinum catalysts

3. Step-by-Step Usage Guidelines

Electronic Encapsulation Process

1. Mix with crosslinker (1:1 ratio)
2. Degas under vacuum (30 min)
3. Pour into mold & cure at 120°C (2 hrs)
4. Post-cure at 150°C (4 hrs)

4. Real-World Customer Case Studies

Case 1: Semiconductor Manufacturing

Client: Top 5 Global Semiconductor Producer
Challenge: Delamination in high-frequency chips
Solution: 15% formulation in encapsulation compound
Result: 40% improvement in thermal cycling performance

Case 2: Aerospace Components

Client: Aerospace Tier-1 Supplier
Challenge: Outgassing in satellite systems
Solution: Custom 3,000 mPa·s grade
Result: Passed NASA ASTM E595 testing

5. Technical Support & Inquiry

Contact our silicone experts for formulation assistance or sample requests:
Email: info@vivalr.com
Phone: (86) 15866781826