Polyurethane Resin Applications
Polyurethane resin is known for its excellent physical properties, chemical stability, and versatility. It is widely used in various fields, including the following:
Applications in Construction / 建筑领域
- Insulation & Soundproofing: Rigid polyurethane foam provides excellent thermal insulation, often used for wall, roof, and pipe insulation, significantly reducing energy consumption.
- Waterproof Coatings: Polyurethane waterproof coatings are durable and adhere well, making them ideal for waterproofing basements, bridges, and other structures.
Applications in Automotive Manufacturing / 汽车制造
- Interior Components: Used for manufacturing seats, dashboards, and roofs, offering both comfort and wear resistance.
- Lightweight Design: Applied in bumpers, body components, etc., contributing to reduced vehicle weight and enhanced fuel efficiency.
Applications in Electronics and Electrical Industries / 电子与电气行业
- Packaging Materials: Protects circuit boards and cables, offering insulation and moisture resistance to ensure stable operation of electronic devices.
Applications in Industrial Protection / 工业防护
- Corrosion-resistant Coatings: Due to its strong corrosion resistance, polyurethane resin is used for protecting chemical equipment, pipes, and extending the life of industrial equipment.
Applications in Medical and Consumer Goods / 医疗与消费品领域
- Medical Devices: Used in the manufacture of catheters, wound dressings, and medical mattresses due to its good biocompatibility.
- Furniture & Footwear: In furniture, polyurethane resin is used to make cushioning foam for sofas and mattresses, and in footwear, it is used for soles and uppers, offering abrasion resistance, corrosion resistance, and anti-slip properties.
Application Details in Construction / 建筑领域聚氨酯树脂应用细节
| Application Type / 应用类型 | Specific Product / 具体产品 | Characteristics & Parameters / 特性参数 | Construction Tips / 施工要点 | Application Scenarios / 应用场景 |
| Waterproof Coating / 防水涂料 | Water-based Polyurethane Waterproof Coating / 水性聚氨酯防水涂料 | Solid content 30%-50%, Viscosity 500-5000 mPa·s, pH 6.5-8.5, VOC < 50 g/L, Tensile Strength ≥10 MPa | Surface should be clean, dry, and even. Apply by brushing or spraying. | Waterproofing of rooftops, basements, bathrooms, balconies. |
| Thermal Insulation / 保温隔热材料 | Rigid Polyurethane Foam / 硬质聚氨酯泡沫 | Thermal conductivity as low as 0.018 W/(m·K), high compressive strength | Clean the surface before applying. Spray or paste the foam with controlled temperature. | Insulation for walls, roofs, and pipelines. |
| Repair Materials / 建筑结构修复材料 | Polyurethane Composite Resin Mortar / 聚氨酯复合树脂砂浆 | Compressive strength ≥ 80 MPa, excellent bonding strength | Clean the loose particles and ensure the surface has roughness. | Repairing cracks in concrete structures. |
Automotive Manufacturing Polyurethane Resin Application Details / 汽车制造领域聚氨酯树脂应用细节
| Application Type / 应用类型 | Specific Product / 具体产品 | Characteristics & Parameters / 特性参数 | Construction Tips / 施工要点 | Application Scenarios / 应用场景 |
| Seat Cushion Material / 座椅填充材料 | Polyurethane Soft Foam / 聚氨酯软泡 | Resilience ≥85%, high load-bearing, density typically 30-60kg/m³, good flexibility and breathability | Accurate mixing ratio, strict control of reaction temperature and time. Typically molded foam process with materials injected into molds. | Seat cushions for automobiles, providing a comfortable seating experience, suitable for various car models. |
| Interior Skin Material / 内饰表皮材料 | Polyurethane Skin / 聚氨酯表皮 | Good aging resistance, UV resistance, hardness range Shore A 40-80, surface gloss adjustable, excellent wear resistance, friction cycles ≥5000 with no significant wear | Can be processed by spraying, molding, etc., ensuring the mold surface’s cleanliness and uniform temperature for quality skin. | Used for covering automobile dashboards, steering wheels, door liners, enhancing the interior’s texture and aesthetics, common in mid-to-high-end models. |
| Tire Buffer Layer / 轮胎缓冲层 | Polyurethane Elastomer / 聚氨酯弹性体 | High elasticity, good heat resistance and wear resistance, Tensile Strength ≥10MPa, Elongation at Break ≥300%, hardness Shore A 50-70 | React with specialty polyols to form elastomers. Reaction conditions should be strictly controlled to ensure product quality stability. | Used as a buffer layer in tires, improving impact resistance and reducing rolling resistance, applied in high-performance tires. |
| Adhesives / 胶粘剂 | Polyurethane Adhesive / 聚氨酯胶粘剂 | Strong adhesion to glass, metal, plastic, etc., shear strength ≥10MPa, good shock resistance, waterproof, dustproof, excellent weather resistance, stable performance between -40°C to +130°C | Ensure bonding surfaces are clean and dry. Choose appropriate application methods like brushing, spraying, etc., based on specific application scenarios. | Used for fixing automobile windshields, sealing body seams, ensuring vehicle airtightness and integrity, suitable for all vehicle models. |
| Battery Pack Encapsulation Material / 电池包封装材料 | Polyurethane Encapsulation Material / 聚氨酯封装材料 | Excellent insulation, volume resistivity ≥1×10¹⁴Ω·cm, flame resistance UL-94 V-0, good heat conduction control and vibration damping | Can be encapsulated by pouring or coating. Control curing time and temperature during application. |
Polyurethane Resin Applications in Electronics and Electrical Industries / 电子与电气行业聚氨酯树脂应用细节
| Application Type / 应用类型 | Specific Product / 具体产品 | Characteristics & Parameters / 特性参数 | Construction Tips / 施工要点 | Application Scenarios / 应用场景 |
| Encapsulation Materials / 封装材料 | HS-6500A/6500B PU / HS-6500A/6500B 聚氨酯 | Mixing ratio 100:25, hardness Shore-D 40±5, UL-94 V-0 flame retardant | Preheat materials and ensure dry working conditions. | Electronic components like capacitors, transformers. |
| Insulation Materials / 绝缘材料 | Casting Compound / 浇注化合物 | High elasticity, good electrical insulation, chemical corrosion resistance | Use proper molding methods, ensuring solidification under correct temperature and time. | Insulating electronic devices like sensors and relays. |
Industrial Protection Polyurethane Resin Application Details / 工业防护聚氨酯树脂应用细节表
| Application Type / 应用类型 | Specific Product / 具体产品 | Characteristics & Parameters / 特性参数 | Construction Tips / 施工要点 | Application Scenarios / 应用场景 |
| Corrosion-resistant Coating / 防腐涂层 | Water-based Polyurethane Corrosion-resistant Coating / 水性聚氨酯防腐涂料 | VOC content 30-80g/L, Tensile Strength 25-40MPa, Elongation at Break 300-600%, Gloss Retention (2 hours QUV) 85-95%, Adhesion to Steel 4.5-6.0MPa, Excellent Chemical Resistance | Surface should be strictly prepared, such as sandblasting to Sa2.5 standard; apply by brushing or spraying. Temperature 5-35°C, humidity < 80%. Coating thickness 0.2-0.5mm based on corrosion environment. | Corrosion protection for chemical equipment, pipes, and storage tanks such as reactors, heat exchangers, and conveying pipes. |
| Wear-resistant Coating / 耐磨涂层 | Polyurethane Wear-resistant Coating / 聚氨酯耐磨涂料 | High hardness, excellent wear resistance, low friction coefficient, Tensile Strength ≥30MPa, Elongation at Break ≥200%, Strong Impact Resistance | Surface must be clean, dry, and free of oil; apply by spraying or brushing. Coating thickness 0.3-1.0mm, cure after application. Avoid premature abrasion. | Wear-resistant protection for industrial plant floors, warehouse floors, and mechanical workshops like automotive manufacturing workshops and logistics warehouses. |
| Waterproof Coating / 防水涂层 | High-strength Polyurethane Waterproof Coating / 高强度聚氨酯防水涂料 | Mix A and B components in 1:2 ratio, Tensile Strength ≥6.0MPa, High Elongation at Break, Dense Film, Excellent Penetration Resistance, Strong Bonding to Concrete | Surface must be firm, dry, and even, free from debris. Pre-treat with a thin coat, followed by three layers of application. Total thickness ≥2mm. | Waterproofing of non-exposed concrete surfaces in high-speed railways, highway bridges, tunnels, basements, and swimming pools. |
| Weather-resistant Coating / 耐候涂层 | Aliphatic Polyurethane Topcoat / 脂肪族聚氨酯面层涂料 | Excellent weather resistance, UV resistance, low yellowing, good gloss and color retention, moderate hardness, good flexibility | Surface should be clean and achieve specified roughness; apply by spraying. Control temperature and humidity to ensure even coating. Thickness typically 0.1-0.3mm. | Weather protection for outdoor steel structures, building facades, billboards, bridges, TV towers, high-rise building exteriors. |
Medical and Consumer Goods Polyurethane Resin Application Details / 医疗与消费品聚氨酯树脂应用细节表
| Application Type / 应用类型 | Specific Product / 具体产品 | Characteristics & Parameters / 特性参数 | Construction Tips / 施工要点 | Application Scenarios / 应用场景 |
| Medical Dressings / 医用敷料 | Medical Dressing / 医用敷料 | High absorbency, softness, breathability, low allergenicity, biocompatibility; absorbs wound exudate and maintains a moist environment for healing. | Choose the appropriate size and type based on the wound condition. Handle with care to avoid damage to the wound. | Used for wound care, such as surgical wounds, burns, chronic wounds. |
| Medical Bandages / 医用绷带 | Elastic Fiber Glass Medical Bandage / 高弹性玻璃纤维医用绷带 | Comfortable, breathable, lightweight, strong hardness, good projection, strong waterproof properties. | Wrap properly, ensuring proper pressure without affecting circulation. | Used for orthopedic fixation, orthopedic braces, prosthetics, etc. |
| Dialysis Catheters / 血液透析导管 | Dialysis Catheter / 血液透析导管 | Good blood compatibility, tensile strength, and processability, offering higher flow rates at the same external diameter. | Implanted by healthcare professionals following strict aseptic protocols. | Used for long-term dialysis patients, establishing vascular access. |
| Artificial Heart Valves / 人工心脏瓣膜 | Artificial Heart Valve / 人工心脏瓣膜 | Good blood compatibility and mechanical properties, but prone to poor biological stability and calcification. | Implanted by cardiac surgeons with close postoperative monitoring. | Used to replace damaged heart valves, restoring normal heart function. |
| Artificial Blood Vessels / 人造血管 | Artificial Blood Vessel / 人造血管 | Good compliance and elasticity, excellent anti-coagulation performance. | Select appropriate size based on the patient’s vascular condition, carefully handle during surgery. | Used for vascular repair and tissue engineering, such as replacing damaged vascular sections. |
Consumer Goods Polyurethane Resin Application Details / 消费品领域聚氨酯树脂应用细节表
| Application Type / 应用类型 | Specific Product / 具体产品 | Characteristics & Parameters / 特性参数 | Construction Tips / 施工要点 | Application Scenarios / 应用场景 |
| Polyurethane Leather / 聚氨酯皮革 | Polyurethane Leather / 聚氨酯皮革 | Soft, durable, breathable, waterproof, easy to maintain; appearance and feel similar to natural leather. | Control temperature, pressure, and time during processing to ensure leather quality. | Used for surface materials in clothing, footwear, bags, furniture, etc., enhancing product texture and durability. |
| Polyurethane Foam / 聚氨酯泡沫 | Polyurethane Foam / 聚氨酯泡沫 | Good elasticity, softness, breathability, and thermal insulation. | Choose appropriate foam density and hardness based on application needs, avoid sharp objects. | Used for filling materials in sofas, mattresses, pillows, providing comfortable support. |
| Polyurethane Coatings / 聚氨酯涂料 | Polyurethane Coatings / 聚氨酯涂料 | Good abrasion resistance, corrosion resistance, weather resistance, and decorative properties. | Ensure surface is clean and dry, mix coatings in the correct proportions, control environment during application. | Used for surface protection and decoration of metals, wood, plastics, such as automotive bodies and appliance casings. |
| Polyurethane Elastomers / 聚氨酯弹性体 | Polyurethane Elastomers / 聚氨酯弹性体 | High elasticity, strength, wear resistance, oil resistance, low-temperature resistance. | Select appropriate hardness and performance specifications based on application scenarios. | Used for manufacturing seals, shock pads, belts, soles, and other products to meet various requirements. |