JOYWAY INDUSTRIAL COMPANY LIMITED
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MT system with low mould temperature for HR foam
JYST－31A/B
Introduction:
JYST-31A is made up of polymer polyol, grafted polyether polyol, cross linker, blowing agent, and composite catalyst. JYHR-11B is made up of TDI and modified MDI. This type of blend polyol can be used under the temperature 35-55℃. The finished foam enjoys smooth foam skin, good rebound, comfortable feeling ect. And the hardness and density can be adjusted by customer requirement. It is widely used to produce high level car seat foam, mould mattress foam, mould sofa foam etc.
Typical Properties
| Item Unit | JYST-31A | JYST-31 | |
| Appearance NCO Viscosity(25℃)Density (20℃) Storage temp. Shelf life |
% mpa.s g/ml ℃ Months | Milky white liquid / 1600±200 1.05±0.05 15－25 12 | Brown liquid 30.5±0.5 80±15 1.22±0.05 15－25 12 |
Recommended ratio
| Weight ratio | |
| BRHR-11A BRHR-11B | 100 40-50 |
REACTIVE PROPERTY (Material temperature is 25℃)
| By hand | Machine | ||
| Cream time (s) Gel time (s) Mold temperature (℃) Demould time (min)FRD (kg/m3) | s s ℃ min kg/m3 | 8-10 50-60 35-55 12-15 55-60 | 7-9 48-58 35-55 12-15 53-58 |
TYPICAL PHYSICAL PROPERTY
| Unit | Data | |
| Moulded density Tensile strength Elongation (%) Rebound Tear strength 75% Compression Set (70℃ ,22h) 25% ILD (N/314cm2) 65% ILD (N/314cm2) | Kg/m3 Kpa % % N/cm % N/314cm2 N/314cm2 | 75-80 ≥150 ≥100 ≥55 ≥2.2 ≤10 150-220 450-750 |
The final interpretation of this specification is owned by our company.