STD4019P Modified cellulose ether
We specialize in providing high-quality STD4019P Modified cellulose ether for industrial clients across various sectors. Whether you need chemicals consultation, technical support, or detailed information about our production capabilities, our team is here to help.
Category：Paint chemicals MOQ:100KG Shipped directly from China
Introduction
It is a high quality modified cellulose ether product developed for cement-based tile adhesive and plaster mortar applications, which can significantly improve the construction performance of tile adhesive.
Basic Properties
| Property | Description |
|---|---|
| Chemical Structure | Modified cellulose ether is derived from natural cellulose through etherification and cross-linking reactions. |
| Appearance | White to off-white powder, free-flowing. |
| Solubility | Soluble in water to form viscous solutions, with modified versions offering enhanced solubility characteristics. |
Performance Enhancements
| Property | Original Cellulose Ether | Modified Cellulose Ether |
|---|---|---|
| Water Retention | Good | Significantly improved, up to 17% higher with certain modifications |
| Mechanical Strength | Moderate | Increased, with flexural strength and compressive strength improved by 14.05% and 7.12% respectively |
| Viscosity | High | Further increased, leading to improved thickening properties |
Applications
| Application Area | Usage |
|---|---|
| Building Materials | Used in mortars to enhance cohesiveness, water retention, and workability. |
| Adhesives | Provides improved bonding strength and stability in adhesive formulations. |
| Coatings | Enhances the rheological properties and film-forming capabilities. |
Modified cellulose ether (STD4019P type) is a versatile material with enhanced properties compared to traditional cellulose ethers. Its improved water retention, mechanical strength, and viscosity make it suitable for a wide range of applications, particularly in construction materials and adhesives.
Fundamental Properties
| Property | Specification |
|---|---|
| Chemical Base | Hydroxypropyl methyl cellulose |
| Substitution Degree | 1.8-2.0 (Methoxy) |
| Molar Substitution | 0.2-0.3 (Hydroxypropyl) |
| Appearance | White to off-white powder |
| Particle Size | 80-120 μm (90% min) |
| Moisture Content | ≤5% |
| Ash Content | ≤2% |
Performance Characteristics
| Parameter | Test Method | Value |
|---|---|---|
| Viscosity (2% solution) | Brookfield, 20rpm | 40.000±5.000 mPa·s |
| Gel Temperature | Visual gelation | 60-65°C |
| pH (1% solution) | Potentiometric | 6.5-8.0 |
| Water Retention | DIN 18555-7 | ≥95% |
| Hydration Time (25°C) | Viscosity build-up | 8-12 minutes |
Application Guidelines
| Application | Dosage | Key Benefit |
|---|---|---|
| Tile Adhesives | 0.2-0.4% | Improved open time |
| Self-leveling Compounds | 0.1-0.3% | Controlled flow |
| Gypsum Products | 0.3-0.5% | Enhanced workability |
| Exterior Insulation Systems | 0.4-0.6% | Water retention |
| Cement-based Putties | 0.2-0.5% | Reduced cracking |
Key Features:
Delayed hydration for extended processing time
Pseudoplastic rheology for superior workability
Thermal gelation prevents sagging
Compatible with common construction additives
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