Wear Resistant PU Sheet Shock Absorbing Back Panel
Product advantages
Excellent dynamic load performance: perfect balance of high elasticity and impact resistance
The "hard segment-soft segment" molecular structure of polyurethane sheets makes them have both high elasticity of rubber and high strength of plastic, and they perform well in dynamic load scenarios. For example, in the application of conveyor belt roller covering layer of mining machinery, the elongation at break of polyurethane sheets is greater than 500% (it can absorb the impact energy of ore), and the wear resistance (Akron wear value ≤ 0.02cm³/1.61km) is 3-5 times higher than that of ordinary rubber, and the service life is extended to more than 5 years; in the application of automotive shock absorbers, its customized range of Shore hardness 70A-85A can match different load requirements (soft buffering high-frequency vibration, hard support low-frequency impact), significantly reducing the noise in the car (<45dB).
Oil and solvent resistance: "protective armor" for industrial equipment
Polyurethane sheets do not swell or soften (volume change rate <3%) after long-term immersion in mineral oil, hydraulic oil, silicone oil, etc., and have excellent resistance to gasoline and diesel (volume change rate <5%), making them suitable for automotive gearboxes and hydraulic system components. In scenes such as chemical tank gaskets and oil pipeline linings, their acid and alkali resistance (performance attenuation <5% under pH 3-10 environment) is better than that of ordinary rubber (such as nitrile rubber with limited oil resistance), and they are not easy to swell or crack after long-term contact with chemical media, avoiding the risk of leakage.
High wear resistance and low friction: "long-term partner" for dynamic components
The Akron wear value of polyurethane sheets is ≤0.02cm³/1.61km (only 1/3 of ordinary rubber), and the surface hardness is moderate (Shore A 70-95), which not only ensures wear resistance, but also avoids energy loss caused by excessive friction coefficient. In high sliding friction scenarios such as mining machinery linings and conveyor belt guides, the service life is 2-3 times longer than that of ordinary rubber; in the joint parts of fitness equipment (such as treadmill guides), the low friction coefficient (0.2-0.3) reduces movement resistance and improves user experience.
Customized performance: full scene coverage from flexible sealing to rigid support
By adjusting the ratio of polyols to isocyanates, adding fillers (such as glass fiber, carbon black) or modifiers (such as flame retardants, antistatic agents), polyurethane sheets can achieve precise customization of hardness (Shore A 50-95), rigidity (flexural modulus 500-3000MPa), temperature resistance (-40℃ to 150℃) and functional properties (such as flame retardancy, antistatic). For example, in the field of electronics and electrical appliances, CPU sheets with added flame retardants (such as brominated epoxy resin) can reach the UL94 V-0 flame retardant rating and are used in TV back covers; in the medical field, TPU sheets with low hardness (Shore A 50-60) can be used for prosthetic pads to provide soft and comfortable support.
Specific application areas and components
Automobile manufacturing field
Transmission synchronizer rings and gears: Replace metal gears for automatic transmission synchronizer rings or differential components. The high rigidity (bending modulus 1000-3000MPa) of polyurethane sheets can withstand high torque, wear resistance (wear rate is only 1/2 of PA6) reduces friction loss in long-term use, and oil resistance (volume change rate <3%) avoids deformation caused by gear oil penetration.
Engine peripheral seals: Such as cylinder gaskets, oil seal liners, etc. The oil resistance (resistance to mineral oil and hydraulic oil) and high temperature resistance (short-term tolerance to 150℃) of polyurethane sheets can adapt to the high temperature and high pressure environment of the engine compartment and avoid swelling or aging of rubber seals.
Seat cushions and shock absorbers: Used for shock absorbers or suspension systems of car seats, the high elasticity (elongation at break > 500%) of polyurethane sheets can absorb vibration energy and improve riding comfort (noise reduction of 15-20dB), while fatigue resistance (no cracks after repeated compression for 100,000 times) ensures stable performance in long-term use.
Machinery manufacturing field
Wear-resistant linings and guide rails: used for conveyor belt roller coatings, machine tool sliders or mining machinery bearing bushings. The high wear resistance (Akron wear value ≤ 0.02cm³/1.61km) and self-lubrication (friction coefficient 0.2-0.3) of polyurethane sheets can reduce friction loss and extend equipment life (such as the life of mining crusher linings increased by 3 times).
Fasteners and connectors: such as bolts, nuts or buckles. The self-lubrication of polyurethane sheets can reduce assembly torque (30%-50% less than metal threads) and avoid loosening in vibration environments (suitable for automobile engine bracket fixing bolts).
Industrial gears and sprockets: transmission gears in food processing equipment or packaging machinery. The high rigidity (bending modulus 1000-3000MPa) and grease resistance (volume change rate <3%) of polyurethane sheets can support long-term operation needs. The surface can be injection molded with complex tooth shapes to reduce production costs.
Sports goods
Sports soles and midsoles: used in the midsoles or outsoles of running shoes and basketball shoes. The high elasticity of polyurethane sheets (energy feedback rate > 70%) can provide shock absorption and rebound performance, improving sports performance; wear resistance (Akron wear value ≤ 0.03cm³/1.61km) meets long-term wear needs.
Ski and skateboard pads: used as buffer components for ski bindings and skateboard bridges. The low hardness of polyurethane sheets (Shore A 50-60) can absorb impact energy and protect athletes' joints; high impact resistance (cantilever beam notched impact strength ≥ 15kJ/m²) avoids breakage caused by accidental collisions.
Electronics and electrical appliances
Mobile phone cases and protective covers: used in the shells of smartphones and tablets. The high transparency (light transmittance ≥ 90%), scratch resistance (pencil hardness ≥ 3H) and impact resistance (cantilever beam notched impact strength ≥ 10kJ/m²) of polyurethane sheets provide all-round protection, and the surface can be UV printed with personalized patterns.
Electrical shock absorbers and seals: used for shock absorber bases or door seals of TVs and refrigerators. The low compression permanent deformation (<5%) and low temperature resistance (still elastic at -40°C) of polyurethane sheets ensure long-term sealing and shockproof effects.
Building and industrial protection fields
Anti-slip floors and platform pads: used for anti-slip pedals in factory workshops and ship decks. The surface of polyurethane sheets is roughened (friction coefficient>0.6) and is oil-resistant and wear-resistant (volume change rate<3%) to prevent personnel from slipping and equipment wear.
Industrial rollers and conveyor belts: used for the coating layer of logistics conveyor belts or the rollers of mine conveyors. The high wear resistance (lifespan is 2-3 times longer than rubber) and oil resistance of polyurethane sheets reduce maintenance costs and improve conveying efficiency.
