STD6456PF Modified cellulose ether for gypsum base
Category：Paint chemicals
Introduction
Significantly improves the yield of the plaster, thus increasing the coating rate, while at the same time ensuring the excellent anti-sagging properties of the plaster.
Introduction
STD6456PF is a high-performance modified cellulose ether specifically optimized for gypsum-based building materials. It enhances workability, water retention, adhesion, and mechanical strength while ensuring excellent compatibility with gypsum formulations. Below are five detailed tables summarizing its properties, performance benefits, and application guidelines.
Basic Physical & Chemical Properties
| Property | Specification | Test Method |
|---|---|---|
| Appearance | Fine white powder | Visual inspection |
| Moisture content (%) | ≤ 4.0 | ASTM D7191 |
| Bulk density (g/cm³) | 0.35 – 0.55 | ISO 697 |
| pH (1% aqueous solution) | 6.5 – 8.5 | ASTM E70 |
| Particle size (μm) | 90% ≤ 100 | Laser diffraction |
Rheological Properties (2% Solution at 20°C)
| Parameter | Value/Range | Test Method |
|---|---|---|
| Viscosity (mPa·s) | 40.000 – 70.000 | Brookfield LV, 20 rpm |
| Gelation temperature (°C) | > 80 | Thermal stability test |
| Solubility | Instant in cold water | Visual assessment |
| Thickening efficiency | High | Comparative testing |
Performance Benefits in Gypsum Systems
| Property | Effect of STD6456PF |
|---|---|
| Water retention | > 95% in gypsum plaster |
| Workability | Improves spreadability and reduces sagging |
| Adhesion strength | Enhances bond to substrates |
| Crack resistance | Reduces shrinkage cracks |
| Setting time control | Minimal retardation effect |
Recommended Dosage for Gypsum Applications
| Application | Dosage (% by weight of gypsum) |
|---|---|
| Gypsum plaster | 0.1 – 0.4 |
| Gypsum-based putty | 0.15 – 0.5 |
| Self-leveling gypsum | 0.05 – 0.3 |
| Gypsum joint compound | 0.2 – 0.6 |
| Decorative gypsum coatings | 0.1 – 0.4 |
Compatibility with Gypsum Additives
| Additive Type | Compatibility | Remarks |
|---|---|---|
| Retarders (e.g., citric acid) | Excellent | Adjust dosage for setting time |
| Foaming agents | Good | No adverse effects |
| Dispersants | Compatible | May require optimization |
| Polymer modifiers | Excellent | Enhances flexibility |
| Defoamers | Good | No negative impact |
Conclusion
STD6456PF modified cellulose ether is a high-efficiency additive for gypsum-based materials, offering superior water retention, workability, and crack resistance. Its optimized rheology and compatibility make it ideal for a wide range of gypsum applications, from plasters to self-leveling compounds.
Factory & Shipment
