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It is a product designed specifically for hand plastered gypsum. It provides good water retention at low additive levels, while at the same time providing good anti-sagging properties for plasters.
STD9401 is a modified cellulose ether specifically designed for gypsum-based applications. This additive enhances the performance of gypsum products by improving water retention, workability, and adhesion while maintaining optimal setting characteristics. Below are three technical tables summarizing its key properties, performance benefits, and recommended dosage ranges.
| Property | Value/Range | Test Method |
|---|---|---|
| Appearance | White to off-white powder | Visual inspection |
| Moisture content (%) | ≤ 5.0 | ASTM D7191 |
| Viscosity (2% solution, mPa·s) | 10.000 – 50.000 | Brookfield LV, 20°C |
| pH (1% solution) | 6.0 – 8.5 | ASTM E70 |
| Bulk density (g/cm³) | 0.30 – 0.50 | ISO 697 |
| Performance Aspect | Effect of STD9401 |
|---|---|
| Water retention | Improves significantly, reducing cracking |
| Workability | Enhances spreadability and smoothness |
| Open time | Extends for better application |
| Adhesion | Strengthens bond to substrates |
| Setting time | Adjustable with minimal retardation |
| Application | Dosage Range (% by weight of gypsum) |
|---|---|
| Gypsum plaster | 0.1 – 0.3 |
| Joint compounds | 0.2 – 0.5 |
| Self-leveling underlayments | 0.05 – 0.2 |
| Tile adhesives | 0.3 – 0.6 |
STD9401 modified cellulose ether is a versatile additive for gypsum-based formulations, offering balanced viscosity, water retention, and workability. Its optimized performance makes it suitable for a wide range of construction applications.
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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