General Overview
Modified high temperature resistant hydroxypropyl methyl cellulose (HPMC) 2208 is a specialized additive optimized for high-temperature construction. Our hpmc powder delivers excellent high-temperature water retention, greatly extends mortar open time under hot weather and prevents early cracking.
Core Product Advantages
1. High-temperature Water Retention: Achieves ≥88% water retention rate at 35℃, avoids rapid water loss of mortar in summer high temperature and ensures full cement hydration.
2. Enhanced Thermal Stability: Gel temperature increased to 70–75℃, no gelation or viscosity drop at high temperature, maintains stable and consistent performance.
3. Prolonged Open Time: Significantly extends operation window under high temperature conditions, reduces construction pressure and material waste.
4. Early Cracking Prevention: Avoids early cracking caused by rapid surface skinning and uneven moisture, improves construction finished quality.
Product Specifications
Construction-grade Hydroxypropyl Methyl Cellulose (HPMC) 2208 (modified high-temperature resistant grade) is a specialized core additive for dry-mix building materials optimized for high-temperature construction environments. It delivers excellent high-temperature water retention and stronger thermal stability, can greatly extend the open time and adjustable time of mortars in extremely hot conditions, and prevent rapid drying skinning and early cracking; it improves system workability and sag resistance, reduces application resistance, maintains stable performance over a wide pH range, and has good compatibility with cement, gypsum and various construction additives. With easy powder dispersion, fast dissolution and stable batch quality, it is particularly suitable for dry-mix building material systems such as tile adhesives, interior and exterior wall putties, plastering mortars, self-leveling compounds, joint fillers and exterior wall insulation mortars in summer high-temperature construction and dry-hot climate regions.
Key Technical Specifications
| Item | Standard Index |
| Appearance | White to off-white powder |
| Viscosity (2% aqueous solution, 20℃) | 5 – 200,000 mPa·s (multiple viscosity grades available) |
| pH Value (1% solution) | 5.0 – 8.0 |
| Loss on Drying | ≤ 5.0 % |
| Residue on Ignition (ash content) | ≤ 1.5 % |
| Methoxyl Content | 19.0 – 24.0 % |
| Hydroxypropoxyl Content | 4.0 – 12.0 % |
| Gel Temperature | 70 – 75 ℃ |
| Water Retention Rate (standard cement mortar, 35℃) | ≥ 88 % |
| Fineness | ≥ 98 % passing 80 mesh sieve |
Application Scenariors
1. Summer Tile Adhesive Construction: Maintains tile adjustable time and ensures bonding strength at high temperature.
2. Summer Exterior Wall Plastering: Prevents rapid skinning and cracking of mortar, improves vertical construction quality.
3. Dry-hot Climate Construction: Suitable for dry-mix mortars in perennial high-temperature and dry climate regions.
4. High-temperature Insulation Mortar: Avoids hollowing and falling off caused by rapid water loss of insulation layer.
Company Strength
Shandong LUFA New Material Group. is a professional manufacturer specializing in R&D, production and sales of cellulose ether products including hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose and polyanionic cellulose. Established in 2009, we cover an area of 20,800 square meters with an annual output of over 30,000 tons. Our products have passed CE, FCC, RoHS and REACH certifications. Backed by a professional R&D team and strict quality control system, we adhere to the philosophy of "Quality First, Customer Supreme" and provide reliable cellulose ether products for global customers.
Packaging & Shipping
Packaging: Standard 25kg paper-plastic composite bag with inner moisture-proof film; 1000kg jumbo bag is optional. Customized packaging with your own logo is supported.
Shipping: We support sea freight (FCL/LCL), land transportation and international express for samples. All products undergo strict inspection before shipment to ensure good condition.
Delivery Time: 10-12 working days for regular stock orders; 15-20 working days for customized orders.
Transport Protection: Pallet reinforcement and stretch film wrapping are applied to avoid moisture and damage during transportation.
Our Service
Pre-sales Service: Free samples within 500g are available; 1-on-1 technical guidance for product selection; complete technical documents including TDS, SDS and COA are provided.
In-sales Service: Real-time order progress tracking; customized specification adjustment is supported; full assistance for commodity inspection and customs declaration.
After-sales Service: Professional technical team follows up application problems; quick response for quality issues; lifelong technical consultation support.
