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WACKER REPELLENT 50 BASE is a high-performance silicone water repellent base in Wacker’s REPELLENT series, designed for waterproof protection in construction, textile, leather and other fields. With unique siloxane structure, it provides excellent water repellency, breathability and weather resistance, with good compatibility to enhance waterproof, moisture-proof and durability.
High thermal stability - Resistant to high-temperature oxidation, stable performance in long-term high-temperature conditions
Strong radiation resistance - Resists UV and electromagnetic radiation, durable in outdoor and radiation environments
Excellent lubricity - Moderate viscosity, provides long-term anti-wear and lubrication protection
Broad compatibility - Compatible with organic resins, plastics, rubbers and other formulations
High insulation and low volatility - Excellent dielectric properties, low volatiles, suitable for electrical insulation
High-temperature lubrication - Long-term lubrication and anti-wear for high-temperature bearings, gears and chains
Electrical insulation - Insulation and heat dissipation for transformers, capacitors and electronic components
Coatings modification - Weather resistance and leveling optimization for high-temperature coatings and anti-corrosion coatings
Plastics processing - Release, slip and heat resistance enhancement for engineering plastics
Industrial protection - Protection and lubrication for precision instruments and aerospace components
| Brand | Wacker |
| Chemical Type | Phenyl methyl polysiloxane |
| Appearance | Colorless to pale yellow transparent liquid |
| Density (25℃) | 0.98-1.00 g/cm³ |
| Dynamic Viscosity (25℃) | Approx. 1000 mPa·s |
| Refractive Index (25℃) | 1.420-1.430 |
| Flash Point | >280℃ |
Q1: What is the primary function of WACKER REPELLENT 50 BASE Silicone Oil in formulations?
A: It functions as a surface-active silicone oil designed to impart water and soil repellency, improve slip, and reduce surface tension in coatings, sealants, adhesives, and construction chemicals — without significantly affecting substrate adhesion or film integrity.
Q2: Is this product compatible with water-based systems?
A: Yes, WACKER REPELLENT 50 BASE Silicone Oil is formulated for good compatibility and stable dispersion in aqueous systems, including acrylic and styrene-acrylic emulsions, and can be incorporated during or after polymerization depending on process requirements.
Q3: How should it be dosed in typical applications?
A: Dosage depends on formulation requirements and desired performance level, but it is typically used at low concentrations — generally ranging from 0.1% to 2% by weight relative to total formulation solids — and should be optimized through lab-scale trials.
Q4: Does this silicone oil affect curing behavior or pot life in reactive systems?
A: In most cases, it does not interfere with common crosslinking mechanisms (e.g., condensation or addition cure), but its impact on pot life or cure kinetics should be evaluated empirically in each specific system, particularly when combined with sensitive catalysts or multifunctional silanes.
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E-mail: wangxingqiang@ericwchem.com
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