High-density polyurethane rigid foam belongs to what material

High-density polyurethane rigid foam belongs to polymer synthetic materials, specifically, it is a kind of rigid foam material formed by polyurethane (Polyurethane, PU) through chemical reaction foaming. In the process of forming high-density polyurethane rigid foam, these molecular chains form a three-dimensional network structure through cross-linking reactions, giving it high hardness, strength and stability.

High-density polyurethane rigid foam main components

Polyol: As one of the main reactants.
Isocyanate: Reacts with polyol to form polyurethane.
Foaming agent: Used to form the foam structure.
Catalysts, stabilizers and other additives: Regulate the reaction rate and foam structure.

High-density polyurethane rigid foam material properties

High Density: Densities typically above 30 kg/m³ for high mechanical strength and durability.
Rigid structure: The bubble holes have a tight structure and high hardness, able to withstand large pressure and load.
Excellent thermal insulation performance: low thermal conductivity, is an excellent thermal insulation material.
Chemical resistance: good resistance to most chemicals and solvents.
Waterproof and moisture-proof: high occlusion rate and low water absorption rate, suitable for use in humid environments.
Lightweight but strong: light weight but high mechanical strength, easy to process and install.
Environmentally friendly: some of the high-density polyurethane rigid foam adopts environmentally friendly blowing agents, which meets the modern environmental protection requirements.

High Density Polyurethane Rigid Foam Application Areas

Construction industry: Thermal insulation and heat preservation material for walls, roofs, cold storage.
Cold chain logistics: Used as thermal insulation for refrigerated trucks and cold storage.
Industrial equipment: Used as thermal insulation for pipelines, storage tanks.
Transportation: Used as sound and heat insulation for automobiles and ships.
Furniture Manufacturing: Used as furniture filling material or support structure.
Electronic and electrical appliances: Used for shockproof packaging of precision instruments.

Advantages and disadvantages of high-density polyurethane rigid foam

Pros:

High strength and durability.
Excellent heat and sound insulation.
Convenient construction, can be foamed on site or prefabricated.
Highly adaptable, can be used on a wide range of complex shaped surfaces.

Disadvantages:

Relatively high cost.
May decompose at high temperatures, limited temperature resistance.
Some materials may have some environmental impact (depending on blowing agent type).