Target Audience: Cold storage and roofing contractors, insulation applicators and spray rig operators in Egypt and North Africa.
Key Entities & CAS: Polymeric MDI (Wannate PM200, CAS 9016-87-9, UN 2078 Class 6.1), blended rigid polyol systems for SPF.
Target Ports: Alexandria, Damietta, Port Said (Egypt).
Target Keywords: spray polyurethane foam Egypt, SPF system polyol supplier Alexandria, PM200 PMDI cold storage, cream time gel time SPF desert heat.
Quick Summary for Cold Storage & Roofing Contractors
An SPF system consists of a polyol component (polyether/polyester polyols + catalysts + surfactant + blowing agent) and a PM200 isocyanate component, used for cold storage walls and ceilings, roofing insulation and tank insulation. Under Egyptian desert heat, where summer ambient temperatures are often above 40-45°C, cream time and gel time are managed through catalyst balance and blowing-system adjustment. Typical ocean transit from Ningbo to Alexandria is about 18-22 days via Suez, and varies by carrier and sailing schedule. The system polyol is supplied in 220 kg drums and 1,000 kg IBCs, and PM200 in 250 kg steel drums and ISO tanks, each with batch COA, TDS and SDS.
1. Direct Overview
Cold storage and roofing spray applications place demanding requirements on closed-cell content, dimensional stability and adhesion. Closed-cell SPF must resist moisture vapour and thermal cycling on cold-store envelope walls and ceilings, while roofing membranes need stable adhesion across large metal or concrete decks exposed to direct solar load. In desert conditions the common pain points are excessively short cream time caused by hot substrates, sagging or poor adhesion from rapid gelation on hot steel, and inconsistent cell structure when component temperature is not controlled. DOBO supplies blended rigid polyol systems and Wanhua-sourced PM200 out of Ningbo to Alexandria, Damietta and Port Said with batch COA traceability and full export documentation.
2. Typical SPF System Properties (Closed-Cell, Roofing & Cold Storage)
The values below are typical for a closed-cell SPF system and vary with formulation, equipment and substrate temperature.
| Property | Typical value | Notes |
|---|---|---|
| Cream time | 3-6 s | 25°C material temperature, gun mixing |
| Gel time | 25-40 s | Varies with catalyst and substrate temperature |
| Tack-free time | 45-70 s | Depends on formulation and conditions |
| Core density | 38-45 kg/m³ | ASTM D1622 |
| Closed-cell content | ≥ 90% | ASTM D6226 |
| Thermal conductivity (k) | 0.022-0.025 W/(m·K) | ASTM C518 |
| Compressive strength | ≥ 200 kPa | ASTM D1621 |
| Dimensional stability (70°C / 48 h) | ≤ 2% | ASTM D2126 |
| NCO index | 105-115 (PUR spray), 250-300 (PIR board) | Selected by target flame retardancy and dimensional stability |
3. PM200 Typical Specification
| Parameter | Typical value | Method |
|---|---|---|
| NCO content | 31.2-31.8% | ASTM D5155 |
| Functionality (fn) | ≈ 2.7 | Calculation / GPC |
| Viscosity @ 25°C | 180-220 mPa·s | ASTM D4878 |
| Specific gravity @ 25°C | ≈ 1.23 | ASTM D1875 |
| Acidity (as HCl) | ≤ 0.05% | ASTM D1638 |
| Flash point | ≥ 200°C | ASTM D93 |
| UN classification | UN 2078, Class 6.1 | IMDG |
4. Reactivity Control in Desert Heat
- Catalyst balance: Adjust the amine / delayed-action catalyst ratio to the ambient temperature, and where necessary reduce catalyst dosage to avoid an excessively short cream time.
- Blowing system: Select an HFO/HFC or water-blown system according to flame-retardancy and thermal-conductivity targets, and pay attention to index control for PIR systems.
- Material temperature management: Keep the A/B components within a 20-25°C window, and avoid hot substrates (roof steel) accelerating the reaction.
- Single-pass thickness: Spray in layers under high temperature and control per-pass thickness to protect gel and adhesion.
- Environmental conditions: Watch dew point and wind speed to avoid substrate condensation and overspray loss.
5. Packaging, Documents & Transit to Alexandria
- Packaging: SPF system polyol in 220 kg drums and 1,000 kg IBCs; PM200 in 250 kg steel drums (80 drums / 20ft FCL) and 24,000 L ISO tanks (22-24 MT).
- Typical ocean transit from Ningbo to Alexandria: about 18-22 days via Suez (varies by carrier and sailing schedule); Damietta and Port Said follow similar routing.
- Documents per shipment: batch COA, TDS, SDS, commercial invoice, packing list, certificate of origin, and a dangerous goods declaration for PM200 (UN 2078, Class 6.1).
- Importer note: Egyptian importers should confirm current import registration and standards requirements with their own customs broker.
6. Frequently Asked Questions
Request an SPF System Quote
Share your SPF system and PM200 volumes, application and packaging preference, and our team will return indicative pricing, MOQ and lead time for Alexandria, Damietta and Port Said.