90A Thin PU Polyurethane Sheets
2 month ago
Product details
90A Thin PU Polyurethane Sheets PU Polyether Sheet
PU polyether sheet (polyurethane polyether foam sheet) is a polymer foam material made from polyether polyols (polyether polyols) as the primary raw material, along with isocyanates (such as TDI, MDI), catalysts, and blowing agents, using a one-step foaming process (such as continuous foaming or batch foaming). Polyurethane (PU) can be divided into polyether-based PU and polyester-based PU based on its soft segment structure. Polyether-based PU, whose soft segment is composed of polyether polyols (such as polytetramethylene ether glycol (PTMEG) and polyethylene glycol (PEG), exhibits excellent hydrolysis resistance, a soft touch, high resilience, and good low-temperature performance. It is widely used in applications requiring high moisture resistance, comfort, or dynamic load-bearing properties.
PU Polyether Sheet is categorized by density (typically 0.02-0.30 g/cm³) into soft foam (low density, high resilience), semi-rigid foam (medium density, supportive), and rigid foam (high density, thermal insulation). Typical thicknesses range from 1-100 mm (customizable), with widths ≤ 1000 mm and lengths cut to size. Through formulation adjustments and process optimization, this material achieves multifunctional integration, including lightweighting, energy absorption, and chemical resistance. It is a core material for applications such as home appliance packaging, automotive interiors, medical aids, and industrial cushioning.
Typical Applications
Automotive and Transportation
Seat and Interior Cushioning: PU Polyether soft foam is used in automotive seat cushions (such as those used in Nissan and Toyota mid- and low-end models), headrests, and armrests (high rebound provides comfortable support, low compression set, and maintains deformation over long-term use). Density: 0.05-0.10 g/cm³, rebound rate ≥ 60%.
Sound and Thermal Insulation: Semi-rigid foam (density: 0.10-0.20 g/cm³) is used in door sound insulation panels and engine compartment insulation pads (closed-cell structure reduces noise transmission, thermal conductivity: ≤0.03 W/(m·K)).
Home Appliances and Consumer Electronics
Packaging Lining: Soft foam PU Polyether Sheet (density: 0.03-0.08 g/cm³) is used in shock-absorbing packaging for home appliances such as televisions, refrigerators, and washing machines (to absorb energy and protect products from transportation collisions). It has low water absorption (to prevent damage to appliances in humid environments).
Mouse Pads and Keyboard Bases: Low-density soft foam (density 0.02-0.05 g/cm³) is used for esports mouse pads (soft touch enhances precision) and keyboard supports (shock absorption and noise reduction).
Healthcare
Mattresses and Nursing Pads: Medical-grade PU polyether soft foam (compliant with ISO 10993 biocompatibility standards) is used for hospital bed mattresses (pressure distribution and prevention of bedsores) and rehabilitation nursing pads (soft and easy to clean). Antibacterial and mildew-resistant foam prevents cross-infection.
Prosthetic and Orthotic Linings: Medium-density semi-rigid foam (density 0.12-0.18 g/cm³) is used for prosthetic socket linings (conforms to the skin and provides support, while rebound cushioning reduces friction damage).
Industry and Machinery
Equipment Shock Absorbers: PU Polyether rigid foam (density 0.20-0.30 g/cm³) is used for shock-absorbing bases on precision instruments (such as optical platforms and electron microscopes) to reduce vibration transmission and protect equipment accuracy. Its closed-cell structure is oil-resistant and resists long-term contact with lubricants.
Pipe Insulation: Semi-rigid foam (density 0.10-0.15 g/cm³) is used for thermal insulation in refrigeration and chemical pipelines (low thermal conductivity, good energy savings). It is chemically resistant (resistant to weak acids and bases).
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