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Dow DOWSIL SF-2945 Fluid is a special surfactant in the DOWSIL building silicone series, designed for various building board processing technologies. As a high-performance silicone surfactant, it can optimize interface compatibility in building board production, improve material dispersibility and molding effect, with convenient processing and stable performance, a core additive for improving product quality in building board production.
Excellent Interface Compatibility - Optimizes interface bonding of board raw materials, reduces delamination and cracking
Outstanding Dispersion Performance - Improves uniform dispersion of board raw materials, ensures molding consistency
Convenient & Efficient Processing - Easy to add, good fluidity, suitable for various board production processes
Stable & Durable Performance - Temperature and weather resistant, no attenuation during long-term use, suitable for building conditions
Significant Quality Improvement - Optimizes board surface finish, enhances mechanical stability of finished products
Pulp Rough Washing - Optimizes drainage and dehydration, improves pulp washing efficiency, reduces energy consumption
Defoamer Emulsion Modification - Enhances defoamer stability and foam breaking ability, optimizes defoaming effect
Silicone Emulsion Optimization - Reduces emulsion surface tension, improves emulsion dispersion and application performance
Papermaking Auxiliary Systems - Suitable for subsequent papermaking processes, improves overall production efficiency and product quality
| Brand | DOW |
| Product Type | Surfactant Silicone |
| Active Ingredient | 100% |
| Dynamic Viscosity | 4450 cP |
| EO Content | 35% |
| PO Content | 46% |
| HLB Ratio | 6.3% |
| Silicone HLB Content | 10.4% |
Q1: What is the primary function of DOWSIL SF-2945 Silicone Oil in formulations?
A: DOWSIL SF-2945 is a low-viscosity, reactive silicone fluid designed primarily as a surface modifier and release aid. It imparts slip, mar resistance, and improved substrate wetting in coatings, inks, and adhesives, and can also serve as a coupling agent to enhance interfacial compatibility between organic polymers and inorganic fillers.
Q2: Is DOWSIL SF-2945 compatible with common solvent-based and water-based systems?
A: Yes — it demonstrates broad compatibility with both solvent-borne and water-borne systems, including acrylics, polyurethanes, alkyds, and epoxy resins. In aqueous formulations, it may require appropriate emulsification or dispersion techniques for stable incorporation.
Q3: How is DOWSIL SF-2945 typically incorporated into a formulation?
A: It is generally added during the let-down or post-addition stage under moderate agitation. Due to its reactivity, early addition during high-temperature polymerization should be evaluated carefully to avoid premature reaction or volatilization. Dosage depends on formulation requirements but typically ranges from 0.1% to 2% by weight of the total system.
Q4: Does DOWSIL SF-2945 provide long-term stability in cured films?
A: Yes — its reactive silane functionality enables covalent bonding to the matrix upon curing or ambient moisture exposure, resulting in excellent permanence and resistance to blooming, migration, or leaching under normal service conditions.
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