Blend Polyol Polyurethane Foam Raw Materials For Memory Knee Protective Pad
Polyol and Isocynate for the knee protetive pad
JYP－A/B
Polyurethane Foam Raw Materials for the memory knee protective pad
Description:
JYP-A is a blend Polyol which is combined by the polyether Polyol, Polymer polyol and some special slow rebound Polyether Polyol, cross-link agent, foaming agent and composite catalyst etc. JYP-B is isocyaanate MDI which is combined by MDI, modified MDI etc. This kind of material has an excellent liquidity and slow memory result.
Application:
It’s specially used to produce the low memory keen & elbow protective pad.
Typical Properties:
| JYP－A | JYP－B | ||
| Appearance | Milky white viscous liquid | Brown liquid | |
| NCO | % | / | 26.0±1 |
| Viscosity (25℃) | mpa.s | 800±200 | 100±15 |
| Density (20℃) | g/ml | 1.05±0.05 | 1.2±0.05 |
| Storage temperature | ℃ | 15－25 | 15－25 |
| Shelf life | Months | 6 | 6 |
＊ It’s better to store the materials into the original drums, put the drums away from the moisture; B component should be used up at one time, otherwise, it’s better to seal the half drum with the Nitrogen.
Process Conditions (25℃)
Actual values vary according to processing conditions and customer requirements
| By manual | By machine | ||
| JYP—A/B | Ratio(weight) | 100/40-45 | 100/40-45 |
| Cream time | s | 8— 10 | 7—9 |
| Gel time | s | 20—25 | 25—30 |
| Mould temperature | ℃ | 40—50 | 40—50 |
| Mould release time | min | 7-8 | 7-8 |
| Mouled density | kg/m3 | 300-350 | 300-350 |
| FRD | kg/m3 | 180—220 | 150—200 |
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