Vinyl Terminated Silicone Fluid factory
Vinyl Terminated Silicone Fluid
Everything you need to know about our products and company
Basic Product Information
TYPICAL PROPERTIES
| Appearance | Colorless Transparent Liquid |
| Viscosity (25℃),mm2/s | 70-110000 |
| Vinylcontent % | 0.06-1.08 |
| Volatile content （150℃，3h),% | ≤1.5 |
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Physical Properties
Chemical Properties
Product Functions
The polysiloxane backbone of vinyl silicone oil offers high flexibility.
Vinyl groups enable controlled crosslinking, forming a balanced network that retains chain mobility while avoiding excessive rigidity, improving bendability and elasticity.
The low rotational energy barrier of siloxane chains maintains material softness even at sub-zero temperatures.
Uniformly distributed vinyl crosslinking sites mitigate localized stress under external forces, reducing brittle fractures.
Si-O bonds (bond energy: 452 kJ/mol) outperform organic C-C bonds (348 kJ/mol), resisting thermo-oxidative degradation.
Vinyl π-electrons absorb UV energy, coupled with silicone transparency, minimizing yellowing and chain scission from UV exposure.
Surface-enriched siloxane chains form a water-repellent layer, blocking moisture, salt spray, and corrosive agents.
Surface tension (20–21 mN/m) is far lower than mineral oils (~30 mN/m), forming uniform lubricating films with friction coefficients of 0.01–0.1.
Minimal viscosity-temperature dependence ensures stable lubrication from -50°C to 200°C (no decomposition at high temps, no solidification at low temps).
Non-reactive with metals/plastics, preventing chemical deposits at interfaces.
Vinyl groups react with substrate active sites (e.g., -OH, -NH₂), improving compatibility and preventing phase separation.
Adjust vinyl content and molecular weight to fine-tune viscosity, thixotropy, or self-leveling properties.
Vinyl groups serve as reactive sites for grafting fluorinated/epoxy groups, enabling hydrophobicity, conductivity, or other tailored properties.
Applications
Silicone Rubber Industry
Electronics & Optoelectronic Materials
Textiles & Leather
Cosmetics & Personal Care
Industrial Additives
Medical & Biomaterials
Controlled Release: FDA/ISO-certified carriers for hormones/anticancer drugs.
New Energy Sector
Core Advantages
| Performance Category | Core Advantage Parameters | Industry Value |
| Thermal Stability | – Temp. Range: -50°C to 250°C – Short-Term Tolerance: ≤300°C (1h) | Ideal for high-temperature applications (engine seals, LED encapsulation) and low-temperature resilience (arctic equipment). |
| Chemical Stability | – pH Resistance: 2–12 – Solvent Resistance (gasoline, alcohols) | Withstands harsh chemicals in chemical pipeline seals and medical device disinfection. |
| Electrical Performance | – Dielectric Strength: ≥15 kV/mm – Volume Resistivity: ≥1×10¹⁴ Ω·cm | Critical for high-voltage cable insulation and 5G base station encapsulation. |
| Mechanical Properties | – Tensile Strength (HTV): 4–8 MPa – Elongation at Break: 200–600% | Ensures tear-resistant elastic products (nipples) and compression-resistant seals. |
| Surface Properties | – Surface Tension: 20–21 mN/m – Water Contact Angle: ≥110° | Enables waterproof textiles and self-cleaning anti-fouling coatings. |
| Optical Performance | – Light Transmittance (400 nm): ≥92% – Refractive Index: 1.40–1.42 | Boosts LED luminous efficiency and anti-reflective optical lenses. |
| Reactivity | – Vinyl Content: 0.1–1.5% (adjustable) – Curing Speed (Pt-catalyzed): 30s–5min | Customizable for soft LSR or high-strength HTV via crosslink density control. |
| Biocompatibility | – ISO 10993-5 (cytotoxicity test) – USP Class VI compliant | Safe for medical implants (joint lubrication) and baby product certifications. |
| Environmental Durability | – UV Aging (QUV 3000h): ΔE <1.5 – Salt Spray Test (2000h): No corrosion | Long-term protection for outdoor PV modules and automotive exteriors. |
| Process Adaptability | – Viscosity Range: 50–100,000 mPa·s (25°C) – Resin Compatibility (e.g., PP/PC) | Optimizes injection molding flow and composite material interfaces. |
Experimental Data & Case Studies
| Function/Application | Key Experimental Data | Typical Case Study |
| Improved Silicone Rubber Flexibility | – 5% vinyl silicone oil addition: • Shore A hardness reduced by 15% (60 → 51) • Tear strength increased by 20% (to 25 kN/m) (ASTM D624) | Case: Baby nipples (a global brand) • Achieved EN1400 tear resistance (>16N) via adjusted vinyl content (0.8%). |
| Enhanced Weather Resistance | – QUV accelerated aging 3000h: • Tensile strength retention >90% • Yellowing index ΔE <1.2 (ISO 4892-3) | Case: PV encapsulation film (Top 5 manufacturer) • <5% power loss over 25 years outdoors with vinyl silicone oil-modified film. |
| Electronic Encapsulation Reliability | – Dielectric constant (1MHz): 2.7–3.2 – Breakdown voltage: 18–22 kV/mm (IEC 60243-1) | Case: EV IGBT module encapsulation • >100,000h insulation life at 150°C/85% RH (2x industry standard). |
| Durable Textile Waterproofing | – After 50 washes: • Water contact angle >100° • Hydrostatic pressure ≥8 kPa (AATCC 127) | Case: Outdoor冲锋衣 (a leading brand) • Passed ISO 811 waterproof certification (10,000mm water column). |
| Medical Lubricity | – Friction coefficient: 0.05–0.08 (ASTM D1894) – Cytotoxicity: ISO 10993-5 Grade 0 | Case: Cardiovascular guidewire coating • 60% lower insertion resistance; zero adverse reactions (FDA 510k approved). |
| Li-ion Battery Separator Coating | – Thermal shrinkage (150°C/1h): <5% (vs. PE base film >30%) – Electrolyte contact angle: <10° | Case: Power battery manufacturer • Coated separator passed GB/T 31485 nail penetration test; thermal runaway temp. raised to 210°C. |
Usage Guidelines & Precautions
Usage Methods
Steps:
Add vinyl silicone oil at 0.1–10% (by weight) to the base material (e.g., resin, emulsion).
Stir at 25–60°C for 30–60 minutes (200–500 rpm) until homogeneous.
Example:
Cosmetic Emulsions: Add 1–3% vinyl silicone oil and homogenize at 3,000 rpm for 10 minutes.
Steps:
Dilute with solvents (e.g., toluene, D4) to 10–50% solid content.
Apply via spraying/dipping, then dry at 80–120°C (ensure ventilation).
Example:
Textile Waterproofing: Dilute to 20%, apply via pad-dry-cure process (180°C × 2 min).
Steps:
Mix Ratio: Vinyl silicone oil : hydrosilicone oil = 100 : 1–10 (Si-H/Si-Vi molar ratio 1.0–1.5).
Catalyst: Add 1–50 ppm platinum catalyst (e.g., Karstedt catalyst).
Curing: Room temperature to 150°C for 5–30 minutes (adjust based on coating thickness).
Example:
LSR Injection Molding: Cure a two-component mixture at 120°C × 10 seconds.
Precautions
Packaging & Ordering
Packaging: 200kg/1000kg plastic drums (customizable).
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