| Customization: | Available |
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| Usage: | Agricultural, Industrial, Vehicle |
| Material: | Polyurethane Rubber |
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Classification of Polyurethane
1. Elastomers
Cast elastomer (CPU): Offering a wide hardness range (Shore A 70-95), oil resistance, and low-temperature resistance, it is used for mine screen plates, sealing rings, etc.
Thermoplastic elastomer (TPU): Over five times more resistant than conventional rubber, suitable for rubber rollers, soles, and medical catheters.
2. Foam
Hard foam (PUF): With a thermal conductivity as low as 0.024 W/mK, it is utilized for building insulation and cold chain transportation heat insulation.
3. Functional Products
Seals: Featuring high-temperature resistance (up to 150ºC) and hydrolysis resistance, they are used for automobile oil seals and engine seals.
Rollers and conveying parts: Resistant to solvents and antistatic, suitable for printing, textiles, mining machinery, etc.
| performance index | Typical values / features | application scenarios |
| abrasion performance | Abrasion index 0.05 mg / cm2 (5 x super rubber) | Mine screen plate, conveyor belt roller |
| temperature tolerance | -70ºC ~150ºC (up to 300ºC for some special materials) | High-temperature sealing ring, automobile engine parts |
| chemical resistance | Oil resistance, acid and alkali resistance, electrolyte resistance (such as new energy vehicle battery packaging) | Chemical equipment sealing, battery cooling pipe |
| Shock absorption and return elasticity | Compression deformation rate is 5%, and rebound rate is 60% | Shock pad, cushion rubber head, car bumper |
Typical Application Areas
1. Interior Parts: Polyurethane armrests and seat foam offer high resilience (with a laboratory-tested lifespan increased by threefold), and their lightweight design reduces the vehicle's energy consumption.
2. Sealing and Shock Absorption: Sealing strips and shock-absorbing rubber cushions boast a weather resistance of 10 years, making them suitable for the high-pressure environments of new energy vehicles. Acid and alkali-resistant seals are utilized for chemical equipment, and self-repairing polyurethane extends the lifespan of components by 30%.
3. New Energy Components: Battery packaging adhesives exhibit electrolyte corrosion resistance, with voltage resistance reaching up to 60MPa; TPU cable sheaths are used for high-voltage lines.
4. Mine Equipment: The life expectancy of CPU screen plates is triple that of metal, and they are equipped with strong wear resistance for use in ball mills and crushers.
5. Rollers and Transmission Wheels: Food-grade polyurethane rollers are solvent-resistant, with a surface roughness of Ra 0.1 μm, making them suitable for printing and textile machinery.
6. Electronics and Semiconductors: Semiconductor CMP polishing pads are utilized in silicon wafer polishing, and thermal conductive polyurethane materials are used in medical CT slip rings.
7. Suspension System: Polyurethane buffer blocks (Jounce Bumpers) and top mounts (Top Mounts) replace rubber components to enhance vehicle NVH performance (reducing noise, vibration, and harshness).
8. Aerospace: High-temperature resistant polyurethane seals are utilized for engine compartment vibration isolation, and their lightweight design is tailored to fit rocket structures.
9. Household appliances: Refrigerator compressor shock absorption pads reduce operating noise and enhance energy efficiency.
Polyurethane Core Characteristics
1. High elasticity and resilience energy
The polyurethane elastomer can undergo significant deformation under pressure (up to a 75% deflection rate is permissible), and it can absorb impact energy through its internal microporous structure, thereby reducing the impact force.
With a compression deformation rate of 5% and a recovery rate of 60%, it can quickly restore from deformation, making it suitable for high-frequency vibration scenarios.
2. Wear resistance and tear resistance
The abrasion index is 0.05 mg/cm², and the wear resistance is over five times that of rubber, extending the lifespan of mining equipment by three times compared to metal parts.
It possesses high tear resistance strength, capable of withstanding wear from sharp objects or complex working conditions.
3. Environmental adaptability
Temperature resistance range spans from -20ºC to 150ºC; special modified materials can endure extreme temperatures up to 300ºC.
It is oil-resistant, resistant to acids and alkalis, and electrolyte corrosion, making it suitable for chemical equipment and the high-pressure environments of new energy vehicles.
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