Research Article
A Study on Making Rigid Polyurethane Foams from Vietnam Rubber Seed Oil-Based Polyol by Using Water as a Single Blowing Agent
Table 2
Raw materials, characteristics, and properties of foams.
| | Foam-RSO | Foam-MH |
| | Starting materials | Weight portion | | Polyol MH 25646 | 0 | 100 | | Biopolyol | 100 | 0 | | Isocyanate Suprasec 5005 | 90 | 105 | | Water | 4 | 0 | | Glycerol | 3 | 0 | | Dibutyltin dilaurate | 0.4 | 0 | | Triethylamine | 0.2 | 0 | | Silicone L580 | 0.35 | 0 | | Characteristics | Time | | Cream time (s) | 45 | 13 | | Rise time (s) | 180 | 75 | | Tack-free time (min) | 12 | 10 | | Properties | Value | | Core density (kg/m3) | | | | Cell radius (μm) | | | | Compressive strength (kPa) | | | | Dimensional stability (%) | <2 | <2 | | Water absorption (%) | 9.13 | 10.23 |
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