Complaint
Polyurethane (PU), full name of polyurethane, is a polymer compound. Polyurethane has two categories: polyester type and polyether type. They can be made into polyurethane plastics (mainly foam), polyurethane fibers (called spandex in China), polyurethane rubber and elastomers.
Soft polyurethane mainly has a thermoplastic linear structure, which has better stability, chemical resistance, resilience and mechanical properties than PVC foam materials, and has smaller compression deformation. Good thermal insulation, sound insulation, anti-seismic and anti-gas performance. Therefore, it is used as packaging, sound insulation and filtration materials. Rigid polyurethane plastic light weight, sound insulation, excellent thermal insulation, chemical resistance, good electrical properties, easy processing, low water absorption. It is mainly used in construction, automobile, aviation industry, thermal insulation structural materials. Polyurethane elastomer properties between plastic and rubber, oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness, elastic. It is mainly used in the shoe industry and medical industry. Polyurethane can also make adhesives, coatings, synthetic leather and so on.
| Item | Unit | DR-523 | DR-523TB | DR-523TD |
| Appearance | Pale yellow translucent viscous liquid | Pale yellow translucent viscous liquid | Pale yellow translucent viscous liquid | |
| Chroma | APHA | ≤100 | ≤100 | ≤100 |
| Solid content | % | 38-40 | 36-38 | 40±2 |
| Viscosity | mPaS/35ºC | 10000-30000 | 10000-30000 | 10000-30000 |
| Tensile strength | Mpa | ≥25 | ≥5 | ≥50 |
| 100% modulus | Mpa | 5-7 | 1-3 | 5-7 |
| Elongation | % | ≥800 | ≥800 | ≥800 |
| Softening point | ºC | 130-160 | 130-160 | 130-160 |
| TG | ºC | -35.5 | -35.5 | -35.5 |
| Characteristic | Good transparent, Good gloss, super adhesion | Good transparent, good gloss, super adhesion |
