PU High Resilience Material For Automotive Seats
DHR-A/DHR-B
CHARACTERISTICS
Blend polyol DHR-A is made up of polymer polyol, grafted polyether
polyol, ccross-linking agent,
blowing agent and composite catalyst.
Isocyanate DHR-B is made up of modified MDI.
This composite can be used at the place which TDI is not
allowed and mold temperature can reach 40- 50℃. The
resulting product is eco-friendly and has low smell, high
resilience and high hardness.
APPLICATION
This kind of product is widely used for making car seats.
TYPICAL PROPERTIES
| Item | DHR-A | DHR-B |
| Ratio | 100 | 70-85 |
| Appearance | Milky viscous liquid | Brown transparent liquid |
| NCO (%) | / | 26.0±1 |
| Viscosity(Mpa.s/25℃) | 2500±200 | 120±15 |
| Density (g/ml 20℃) | 1.05±0.05 | 1.20±0.05 |
| Storage temperature (℃) | 15-25 | 15-25 |
| Shelf life (month) | 6 | 6 |
＊ Under the recommended temperature, keeping it in the original dry
barrels, and don’t mix water in it; B-component is suggested
using nitrogen seal after opening.
REACTIVE PROPERTY
| Item | Manual | Machine |
| Cream time (s) | 9-12 | 8-11 |
| Gel time (s) | 73-78 | 70-75 |
| Mold temperature (℃) | 40-50 | 40-50 |
| Demolding time (min) | 5-7 | 5-7 |
| FRD (kg/m3) | 50-55 | 48-53 |
(Material temperature is 25℃, the actual data changes according to
processing conditions and clients’ requirement)
TYPICAL PHYSICAL PROPERTY
| Item | Standard |
| Overall density (kg/m3) | 60-65 |
| Tensile Strength (Kpa) | ≥120 |
| Elongation (%) | ≥100 |
| Resilience (%) | ≥55 |
| Tear Strength (N/cm) | ≥2.0 |
| 75% Compression Set (%) | ≤10 (70℃, 22h) |
| 25% ILD (N/314cm2) | 400-500 |
DECLARATION
1. The above technical data are tested by our own company, is not
subject to any restriction in law.
2. The final interpretation of this specification is owned by our
company.
