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Polyurea and polyurethane


What is polyurea and what is it used for?

Polyurea is an innovative material derived from the union of an isocyanate and polyamines, forming robust and fast chemical bonds. Its resistance to high temperatures and humidity makes it perfect for waterproofing projects, even on aquatic surfaces.

It ensures a solid bond, although it is vital that the base is dry. Polyurea is applied in coatings and protections in large areas and is ideal for projects with tight deadlines due to its fast drying.

What is polyurethane and what is it for?

Polyurethane originates through the reaction between isocyanates and polyols in the presence of a catalyst.

This versatile family of polymers produces products that range in stiffness from rigid to flexible. In the form of polyurethane foams, bases were established in 1979 to insulate buildings. It is used in multiple applications, including thermal and acoustic insulation, as well as in the manufacture of various products such as furniture, footwear and more.

What is the difference between polyurea and polyurethane?

The fundamental difference between polyurea and polyurethane lies in their composition and properties.

Polyurea is formed by the union of an isocyanate and several polyamines, without the need for a catalyst. This results in stronger and faster chemical bonds. On the other hand, polyurethane is created by the reaction of an isocyanate and a polyol in the presence of a catalyst.

This difference in composition translates into unique properties: polyurea shows high resistance to temperatures and humidity, even applicable on water, while polyurethane offers a variety of flexibilities depending on the polyols and isocyanates used.

What is epoxy resin?

Epoxy resin, also called epoxy, is a powerful adhesive made up of two parts, resin and hardener, which when mixed together form a strong adhesive bond.

Its versatility allows it to join various materials such as ceramics, wood, metal and cement. It stands out for its thermal resistance up to 70°C, its ability to resist chemical corrosion and its applicability in floors subjected to intense traffic.

In addition, its easy application and cleanup, along with its self-leveling capabilities, make it valuable in many industries, from aircraft to electronics.

Polyurethane, polyurea or epoxy resin. Which to choose?

The choice between polyurethane, polyurea and epoxy resin depends on the specific needs of the project.

If you are looking for a fast and resistant waterproofing solution, polyurea is ideal, especially on aquatic surfaces. If you require a versatile and durable insulation, polyurethane may be the right choice. On the other hand, epoxy resin is perfect for strong bonds in a variety of materials and is especially useful in flooring applications.

Each option has its unique advantages, so it is crucial to consider the characteristics of your project to make the right decision. Contact Celtipol and we will advise you on which is the best product for your needs.

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