Silicone Oil
Your proffesional Customized Silicone Oil Manufacturers Suppliers in China
Silicone oil refers to a class of linear polysiloxane-based fluids with organic side chains, known for their exceptional thermal stability, low surface tension, broad viscosity range, and chemical inertness. The backbone of silicone oil consists of alternating Si–O–Si bonds, and the material can be tailored through functional group modification and molecular weight control to meet diverse industrial and consumer applications.
Key Technical Parameters
| Parameter | Typical Values | Customizable Range |
|---|---|---|
| Viscosity @ 25°C | 10 cSt, 100 cSt, 350 cSt, 1,000 cSt | 0.65 cSt ~ 2,000,000 cSt |
| Molecular Weight (Mw) | 5,000 – 60,000 g/mol | Up to >500,000 g/mol |
| Refractive Index | 1.400 – 1.410 | Varies by side group |
| Specific Gravity (25°C) | 0.96 – 0.98 g/cm³ | — |
| Flash Point | ≥ 300°C (for medium to high viscosity) | — |
| Surface Tension | ~20.5 mN/m | Enables superior wetting and spreading |
| Service Temperature | -50°C to +250°C | Phenyl-modified types offer higher temp resistance |
Available Product Grades & Functional Options
| Type | Functional Group | Key Application |
|---|---|---|
| Standard Methyl Silicone (PDMS) | –CH₃ | General lubrication, mold release, defoamers |
| Phenyl Silicone | –C₆H₅ | Enhanced thermal stability for electronics |
| Hydroxyl-Terminated PDMS | –OH | Crosslinkable for silicone rubber/formulations |
| Vinyl-Terminated PDMS | –CH=CH₂ | Used in LSR, HTV, and addition-curing systems |
| Amino-Functional Silicone | –NH₂ / –NH– | Textile softeners, antistatic additives |
| Polyether-Modified Silicone | PEG/PPG | Emulsifiers, hydrophilic modifiers in cosmetics |
Typical Applications by Industry
| Industry | Application | Recommended Type |
|---|---|---|
| Personal Care / Cosmetics | Emollient, silky feel, film former | Polyether-modified silicone (20–1,000 cSt) |
| Medical / Healthcare | Device lubricants, scar gels, ophthalmics | High-purity PDMS, high-viscosity silicone oils |
| Textiles | Fabric softeners, antistatic finishes | Amino silicone, microemulsion forms |
| Electronics / Electrical | Dielectric fluids, encapsulants | Phenyl silicones, electronic-grade PDMS |
| Mechanical / Industrial | High-temp lubrication, mold release | 100–10,000 cSt PDMS |
| Rubber Compounding | Reactive intermediate for LSR or HTV | Vinyl-terminated silicone oil (Vi-PDMS) |
Key Advantages
Wide Viscosity Range: From ultra-low to paste-like
Thermal Stability: Functional up to 250°C+
Chemical Inertness: Resistant to oxidation, hydrolysis, and aging
Excellent Dielectric Properties
Biocompatibility: Suitable for pharma and medical use
Custom Functionalization: Tailored for specific crosslinking or blending requirements
Packaging Options
1 kg / 5 kg / 20 kg / 200 kg (HDPE drums or metal pails)
Lab sampling sizes: 50 g – 500 g available on request
OEM/ODM support for viscosity, functionality, emulsion systems, and custom packaging
Technical Support & Custom Formulation
We offer full technical assistance and custom formulation development, including:
Molecular structure and end-group customization
Viscosity and reactivity adjustments
Application-specific silicone blends
Request your SDS / TDS / COA / sample or discuss your formulation needs with our silicone specialists.