LT3101 is a polyurethane system mainly formulated with polyether polyol, polyester polyol, polymer polyol, chain extender, foam stabilizer, catalyst, and blowing agent. The system is designed to deliver excellent elasticity, toughness, and lightweight performance for molded elastomer applications.
Isocyanate Component
Isocyanate: Modified Isocyanate
Applications & Key Features
LT3101 is primarily used for the production of low-speed light-duty tires, including bicycle tires, golf cart tires, outdoor fishing box tires, outdoor camping trolley tires and etc. It offers key advantages of high production efficiency, excellent elasticity and toughness, lightweight structure, superior impact absorption, and smooth and stable rolling performance.
Control Tests
The main testing parameters include reaction characteristics such as cream time and fiber time, and the core density of the free-rise foam.
Test Method: 120 g of total material at 25°C is poured into a 500 ml plastic cup to observe reaction behavior.
| Parameter | Value |
| Agitator Speed (rpm) | 1000–2000 |
| Agitator Diameter (mm) | 50 |
| Mixing Time (s) | 6–10 |
|
Notes: After mixing, pour the mixed ingredients into a new cup. |
Reaction Results
| Test Item | Reference Range | Unit | Test Result |
| Cream Time | 10–30 | s | 20 |
| Fiber Time | 30–40 | s | 32 |
| Tack-Free Time | 35–45 | s | 38 |
| Free-Rise Density | 200–400 | kg/m³ | 220 |
Notes: Test temperature: 25°C, and mixing ratio P: I = 100:75 (P= LT3101, I = Modified Isocyanate)
Typical Foam Properties
| Property | Typical Value |
| Overall Density | 300–800 kg/m³ |
| Skin Hardness (Shore C) | 50–90 |
| Skin Tear Strength | 3–12 KN/m |
| Foam Tensile Strength | 1–1.5 MPa |
Laboratory Test Data
| Test Item | Polyether Polyol | Modified Isocyanate | Standard |
| Density (25°C) | 1.02 ± 0.05 g/cm³ | 1.2 ± 0.05 g/cm³ | GB/T 15223-2008 |
| Viscosity (25°C) | 1000 ± 200 cps | 210 ± 40 cps | GB/T 12008.7-2010 |
Packaging & Storage
| Component | Packaging | Storage Temp | Shelf Life |
| Polyether Polyol | 220 kg / drum | 15–35°C | 3 months |
| Modified Isocyanate | 230 kg / drum | 15–35°C | 3 months |
Both components are supplied separately in metal drums. Store in sealed metal drums in a cool, dry, and ventilated area. Avoid direct sunlight or moisture exposure.
Processing Requirements
| Parameter | Specification |
| Raw Material Temperature | 20–35°C |
| Demolding Time | Depends on product size |
| Machine Type | High-pressure or low-pressure PU foaming machine |
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