Produits en mousse rigide de polyuréthane (PU)

Polyurethane (PU) rigid foam is a high-molecular polymer with a three-dimensional network structure formed by the polymerization reaction of isocyanate and polyols (such as polyether polyols or polyester polyols) under the action of catalysts, foaming agents, stabilizers, and other additives.

Definition and Principle
Polyurethane (PU) rigid foam is a high-molecular polymer with a three-dimensional network structure formed by the polymerization reaction of isocyanate and polyols (such as polyether polyols or polyester polyols) under the action of catalysts, foaming agents, stabilizers, and other additives.

Its unique performance is based on its microscopic composition: it features a high closed-cell rate (generally above 90%), giving it high hardness, high strength, and an exceptionally low thermal conductivity. It is primarily used globally in the field of premium thermal insulation and structural reinforcement.

Key Features
Strong Thermal Insulation: The thermal conductivity is extremely low, generally between 0.018-0.024 W/(m·K). It significantly reduces heat transfer, helps maintain warmth, and optimizes energy efficiency performance across various industries.

High Strength and Stiffness: Under reasonable usage conditions, it possesses good compressive and shear strength. It maintains a stable shape within a specific load range and resists deformation.

Excellent Waterproof and Moisture-Proof Properties: Due to the closed-cell rate being above 90%, it drastically reduces the risk of water infiltration, helping maintain consistent, long-term insulation performance even in damp conditions.

Good Chemical Stability: Displays excellent tolerance to certain acidic and alkaline environments, allowing it to maintain its core physical properties and reduce corrosion risks in specific harsh environments.

Excellent Dimensional Stability: Exhibits minimal dimensional changes within its applicable temperature range. Compared to traditional materials, it minimizes deformation caused by temperature fluctuations, providing better structural protection.

Strong Adhesion to the Base Layer: Under appropriate construction conditions, it forms a powerful bond with a wide variety of substrate materials, including metal, wood, cement, glass, and more.

Application Fields
1. Construction Field
Building Insulation: Widely used for wall insulation, roof insulation, and floor insulation.

Waterproofing Integration: Provides seamless roof waterproofing and insulation integration, serving as a critical material for achieving modern building energy efficiency.

2. Refrigeration & Freezing Field
Cold Storage Equipment: Frequently used in the design of insulation layers for refrigerators, freezers, and cold storage facilities to reduce cold loss and significantly improve energy utilization efficiency.

3. Industrial Equipment Insulation
Thermal Insulation Layers: Ideal for chemical pipelines, storage tanks, and chemical reactors. It curtails heat loss under extreme conditions and helps eliminate the risk of equipment condensation.

4. Transportation
Vehicles & Aerospace: Provides thermal insulation, sound insulation, and structural reinforcement for cars, ships, and airplanes. Common applications include automotive interior parts and airplane cabin wall insulation.

5. Packaging Field
Cushioning Protection: Commonly utilized in heavy-duty or precision packaging to provide superior cushioning under impact conditions, safely reducing the risk of damage to fragile items or premium electronic products during transit.