Polyol Isocyanate Polyurethane Foam Raw Materials For Solid Tire
Polyurethane foam raw materials for the solid tire
JYT-21A/B
INTRODUCTION
JYT-21Ais made up of polymer polyol, grafted polyether polyol, cross linker, blowing agent, and composite catalyst. JYT-21B is a kind of modified Polyester Polyol.The finished products have high strength, good toughness, light weight, compression stress transfer smoothly, oil resistance, hydrolysis resistance and excellent fatigue resistance. This materials are widly used to produce tire foam which are used for the Golf car wheel,trolley are wheel etc.
CHARACTERISTIC
| JYT-21A | JYLT-21B | |
|
Appearance NCO % Viscosity(40℃) mpa.s Density(20℃) g/ml Storage Months |
Milk white viscous liquid / 500±200 1.00±0.05 12 |
Liquid or waxy 20±2 300±100 1.20±0.05 6 |
＊The above materials should be stored in the recommend temperature original drums, avoid the moisture, B component should be sealed by the N2 gas if it can not used up at one time.
＊Additive adding:Catalyst:100±20g/20kg; Foaming agent, 1600±100g/20kg；
Recommended Ratio:
| Weight ratio | |
|
JYT-21A JYT-21B |
100 73-75 |
REACTION & PHYSICAL PROPERTIES)
| Item | Data |
|
Cream time s Gel time s Mould temperature ℃ Demould time min FRD kg/m3 |
10—15 35—45 50—55 3—5 180—230 |
FOAM PROPERTIES
| Unit | Data | |
|
Moulded density Tensile strength Elongation Tear strength DIN abrasion |
Kg/m3 Kpa % KN/m mm |
350-400 ≥300 ≥150 ≥15 ≤400 |
Remark:
Ø1,Pigment should be added into the A component, then the ratio of A and B should be adjusted.
Ø2,B component is easy to crystallization, it should be melted to liquid in at 75 degree C. However, B component can not be melted long time at high temperature(80℃, 24 hours), then B component will be lose efficacy.
Ø3,A component is easy to separate, so, it should be mixed well before using.
Ø4,The above data is tested by 6mm finished mould foam.
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