TOPTAPE®-Polyurethane-03
To purchase polyurethane at a lower cost, consider buying in bulk for better wholesale prices, looking for discounts and promotions from suppliers, comparing prices between different suppliers, opting for standard products to reduce costs, buying directly from manufacturers to cut out middlemen, utilizing online platforms for competitive pricing, establishing long-term relationships with suppliers for better deals, considering second-hand materials for some applications, negotiating favorable payment terms, and monitoring raw material market trends to buy when prices are lower. Always ensure the material’s quality and performance meet your needs to avoid sacrificing product quality for lower prices.
Polyurethane market applications
- Automotive Sector:Polyurethane is widely used in car interiors, seats, dashboards, and door panels due to its excellent mechanical properties and resistance to wear and tear. Its durability ensures long-lasting performance in high-use areas of vehicles.
- Construction Industry:In construction, polyurethane is valued for its thermal insulation capabilities. It is commonly used as sealants and waterproofing materials, providing effective protection against moisture and temperature fluctuations.
- Healthcare Applications:Polyurethane’s biocompatibility makes it ideal for medical devices, implants, and tubing. Its properties ensure safety and reliability in critical healthcare applications.
- Footwear Industry:The footwear industry leverages polyurethane for making durable and comfortable soles and midsoles. Its resilience and shock-absorbing qualities contribute to enhanced comfort and longevity of footwear.
- Electronics Sector:Polyurethane’s electrical insulating properties make it valuable in electronics. It is used for encapsulating components and protecting against moisture and mechanical stress, ensuring the longevity and reliability of electronic devices.
- Aerospace Industry:In aerospace, polyurethane’s lightweight nature and high strength find applications in components like insulation and seals. Its properties help reduce weight and improve performance in demanding environments.
Product Details
Here is a table summarizing key parameters of polyurethane:
| Parameter | Description | Range/Value |
|---|---|---|
| Density | The mass per unit volume | 1.2 – 1.3 g/cm³ |
| Hardness (Shore) | Indicates the material’s resistance to indentation | Shore A25 to Shore D98 |
| Thermal Conductivity | Ability to conduct heat | 0.020 – 0.024 W/m·K |
| Tensile Strength | Resistance to breaking under tension | 20 – 50 MPa |
| Elongation at Break | Percentage increase in length before breaking | 200% – 600% |
| Compressive Strength | Ability to withstand loads tending to reduce size | 100 – 250 PSI |
| Flexural Strength | Ability to resist bending or folding | 20 – 40 MPa |
| Impact Resistance | Ability to absorb impact without permanent deformation | High |
| Water Absorption | Ability to absorb and contain water | < 2% |
| Temperature Range | Operating temperature range | -40°C to 120°C |
| Chemical Resistance | Resistance to oils, solvents, and chemicals | Good |
| UV Resistance | Resistance to ultraviolet light | Moderate to good (with additives) |
| Sound Absorption Coefficient | Efficiency of sound absorption | Varies with foam density and thickness |
Product Gallery
Polyurethane manufacturing process
Raw Material Preparation:
- The main raw materials for polyurethane include polyether, isocyanate, and polyester. These are mixed in specific proportions, with the addition of catalysts, stabilizers, and other additives to ensure smooth reaction processes.
Mixing and Reaction:
- The prepared raw material mixture is fed into a reactor for reaction. The temperature and pressure within the reactor must be controlled within a certain range to ensure the reaction progresses correctly, forming a prepolymer.
Dispersion and Foaming:
- During the reaction process, dispersants and foaming agents are added. Dispersants ensure that the polyurethane is evenly distributed throughout the system, while foaming agents generate gas, creating a foam structure within the polymer.
Molding Injection:
- The reacted polyurethane mixture is injected into molds where it solidifies under pressure and temperature. Molds can be customized to various shapes and sizes depending on the product requirements.
Temperature Control and Curing:
- The polyurethane products in the molds are placed in an oven for curing. The duration and temperature of curing depend on the specific product to ensure its performance and quality.
Finishing and Post-Processing:
- After curing, polyurethane products can undergo post-processing operations such as coating, grinding, and trimming to make their surfaces smoother and more aesthetically pleasing.
Inspection and Packaging:
- The produced polyurethane products undergo strict quality inspections to ensure they meet relevant standards and requirements. They are then packaged for storage and transportation.
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Specifications
Density: Polyurethane typically has a density ranging from 1.2 to 1.3 grams per cubic centimeter (g/cm³).
Hardness: The hardness of polyurethane typically ranges from Shore A25 to Shore D98.
Color: Can be black, gray, or any color depending on the additives used
Thickness:The thickness of polyurethane can vary widely depending on its specific application.
Packaging and delivery
Packaging Details: Protective packaging｜Boxes and cartons｜Pallets
Port: Shanghai
Supply Ability: 10000 Square Meters/Square Meters per Week
Place of Origin: China
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