An Overview of Cast Polyurethane
Do you know the benefits of cast polyurethane? Cast polyurethane is a versatile material that is highly resistant to chemicals and abrasions. The plastic is stable in water, and is easy to process and inexpensive to produce. Urethane can be as hard as a golf ball or softer than natural rubber.
The way that the plastic is created is by the reaction between a prepolymer containing reactive isocyante groups and a curative that contains hydroxyl groups. This mixture creates a solid elastomer plastic that can then be transformed into thousands of materials and objects all with differing thicknesses, strengths, and flexibility ranges.
To make cast urethane, thermoset materials are used. Thermosets are reacted one time and are unable to mold again. This gives cast urethane reactive and homogeneous properties that can create different characteristics in the final product. Different additives can change the urethane into something incredibly tear or cut resistant, bouncy, slippery, sticky, stretchy, hard, or extremely rigid, depending on the design for the product.
This extremely high level of versatility combined with the inexpensive manufacturing methods makes cast polyurethanes some of the most-used materials in the entire world, in factories, agriculture, consumer products, commercial products, manufacturing, automotive vehicles, and many other applications.
The flexible nature of the plastic also makes it possible to transform into a variety of products using a wide range of manufacturing methods, including injection molding, die casting, traditional cast molds, and a wide range of other manufacturing methods. The finished products are used in just as many different applications around the world.