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STD30011C Modified cellulose ether for cementitious use

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Feature Good stability
Classification Paint Additives
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It is a product developed to improve the workability of cement-based dry mortars with excellent anti-sagging properties and long open time for tile adhesive applications.

Introduction

STD30011C is a high-performance modified cellulose ether specifically engineered for cement-based construction materials. This advanced additive significantly enhances workability, water retention, and mechanical properties while maintaining excellent compatibility with various cement formulations. The following tables provide detailed technical specifications and application guidelines.

Basic Physical & Chemical Properties

PropertySpecification RangeTest Method
AppearanceWhite to off-white powderVisual inspection
Moisture content≤4.0%ASTM D7191
Bulk density0.38-0.48 g/cm³ISO 697
pH (1% solution)6.5-8.0ASTM E70
Particle size85% ≤100μmLaser diffraction
Ash content≤4.5%ISO 2144

Rheological Performance (2% aqueous solution at 20±1°C)

ParameterTest ValueMeasurement Method
Brookfield viscosity45.000-65.000 mPa·sLV-4 spindle, 20 rpm
Gelation temperature>82°CHot plate method
Hydration time<8 minutesVisual assessment
Water retention rate≥97%Filter paper method
Pseudoplasticity index0.38-0.45Rheometer measurement

Performance Enhancement in Cement Systems

Performance IndicatorImprovement EffectTest Method
Mortar fluidity25-35% increaseFlow table test
Water reduction15-25% potentialFixed flow value method
Adhesion strength20-30% improvementPull-off test
Crack resistance30-40% reductionPlastic shrinkage test
Open time40-60 minute extensionPot life measurement

Recommended Formulation Guidelines

ApplicationDosage Range (% bwoc)Key Performance Benefit
Tile adhesives0.25-0.65%Enhanced adhesion & sag resistance
Self-leveling underlayments0.08-0.25%Improved flow & leveling
Cement renders0.15-0.45%Superior workability & finish
Repair mortars0.20-0.60%Reduced shrinkage & cracking
EIFS base coats0.30-0.70%Excellent crack bridging

Compatibility with Cement Additives

Additive TypeCompatibilityRecommended Adjustment
PCE superplasticizersExcellentCan be used synergistically
Redispersible powdersVery goodEnhances flexibility
Air-entraining agentsGoodNo negative interaction
Set retardersGoodMay require dosage fine-tuning
Calcium formateFairMonitor setting time

Conclusion

STD30011C modified cellulose ether offers exceptional performance in cementitious applications through its unique balance of water retention, rheological control, and mechanical property enhancement. The product’s modified molecular structure provides superior performance compared to conventional cellulose ethers, particularly in demanding applications requiring high adhesion strength and extended workability. Its excellent compatibility with other cement additives makes it an ideal choice for formulating high-performance construction materials.

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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