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Dow Corning PMX-200-100CST is a medium-viscosity dimethyl silicone oil in Dow Corning's PMX-200 series. Designed for silicone synthesis intermediates, electronic industry supporting, industrial lubrication and daily chemical washing, it is a linear polydimethylsiloxane functional material with excellent chemical stability, wide temperature adaptability and low surface tension
High Viscosity & Stable Lubrication - High viscosity, excellent lubrication and damping effect, ensuring stable equipment operation
Wide Temperature Thermal Stability - Broad high and low temperature resistance, stable performance without attenuation under extreme temperatures
Excellent Electrical Insulation - High dielectric strength, suitable for insulation protection of precision electronic and electrical systems
Low Surface Energy - Low surface energy and good spreadability, improving polishing and hydrophobic effects
Industrial Damping Field - Used as damping oil for instruments and machinery to buffer vibration and impact, ensuring smooth operation
High-End Polishing Field - Core component of automotive, furniture and metal polishes, improving gloss and smoothness
Electrical Insulation Field - Insulating oil for precision electronic components and transformers, ensuring electrical system safety
Personal Care Field - Cosmetic additive, endowing skin with soft and velvety touch, optimizing product user experience
| Brand | Dow Corning |
| Chemical Name | Dimethyl Silicone Oil (Linear Polydimethylsiloxane) |
| English Alias | Dimethyl Silicone Fluid |
| CAS No. | 63148-62-9 |
| Active Ingredient | 60 - 100 % |
| Viscosity (25℃) | 1000 cSt |
| Specific Gravity (25℃) | 0.970 |
| Refractive Index (25℃) | 1.403 |
| Viscosity-Temperature Coefficient | 0.6 |
Q1: What is the primary functional role of PMX-200-100CST in industrial formulations?
A: PMX-200-100CST is a medium-viscosity silicone fluid primarily used as a lubricant, release agent, or surface modifier to reduce friction, improve slip, and enhance substrate wetting in coatings, adhesives, and polymer processing applications.
Q2: Is this silicone oil compatible with common organic solvents and resin systems?
A: Yes — PMX-200-100CST exhibits good miscibility with many hydrocarbon solvents, esters, and aromatic carriers, and is generally compatible with acrylics, polyurethanes, epoxies, and thermoplastic elastomers when properly dispersed or diluted.
Q3: How should PMX-200-100CST be incorporated into a formulation to ensure uniform performance?
A: It is typically added during the late-stage mixing phase under moderate shear to avoid excessive entrainment of air; pre-dilution in a compatible carrier solvent may aid dispersion, especially in high-solids or viscous systems.
Q4: Does this product require special handling or storage conditions?
A: Store in tightly sealed containers at room temperature, away from direct sunlight and strong oxidizing agents; it is non-volatile and thermally stable under normal handling conditions, but prolonged exposure to elevated temperatures (>150°C) should be avoided in open systems.
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