Blend Polyol and Isocynate for the knee protetive pad foam
JYP-A / JYP-B is two component material which is used to make the knee protective pad foam and other soft pad. 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 exnt liquidity and slow memory result.
JYP-A | JYP-B | ||
Appearance | Milky white viscous liquid | Brown liquid | |
NCO | % | / | 26.0±1 |
Viscosity (25â) | mpa.s | 800±200 | 100±15 |
Density (20â) | g/ml | 1.05±0.05 | 1.2±0.05 |
Storage temperature | â | 15ï¼25 | 15ï¼25 |
Shelf life | Months | 6 | 6 |
By manual | By machine | ||
JYPâA/B | Ratio(weight) | 100/40-45 | 100/40-45 |
Cream time | s | 8â 10 | 7â9 |
Gel time | s | 20â25 | 25â30 |
Mould temperature | â | 40â50 | 40â50 |
Mould release time | min | 7-8 | 7-8 |
Mouled density | kg/m3 | 300-350 | 300-350 |
FRD | kg/m3 | 180â220 | 150â200 |