What is rigid polyurethane foam and what is it used for?

 

What is rigid polyurethane foam

Polyurethane rigid foam is made of isocyanate and polyether as the main raw materials, under the action of various additives such as foaming agents, catalysts, flame retardants, etc., mixed with special equipment, and high-pressure spraying on-site foaming. polymer. Polyurethane foam has two types: soft foam and rigid foam. Soft foam has an open-cell structure, while rigid foam has a closed-cell structure. Soft foam is divided into two types: skinning and non-skinning.

 

What is the use of polyurethane rigid foam

 

Polyurethane is a class of polymers containing -NHCOO- repeating structural units in the main chain, the English abbreviation PU, including rigid polyurethane foam, soft polyurethane foam, polyurethane elastomer and other forms, and is divided into thermoplastic and thermosetting two. kind. Its raw materials are generally presented in resin state. In addition to being a single-component material, polyurethane can also be mixed with other materials to form composite materials.

 

The main function of polyurethane foam is to cushion. Polyurethane foam is commonly used in electronic equipment manufacturers, new energy industries and aerospace fields. Polyurethane foam maintains its integrity and effectiveness in caulking, sealing, gasketing and vibration isolation applications.