Properties Behind the Advantages of Polyurethane
Polyurethane is a highly flexible elastomer utilized in various applications all over the world. Its has unique mechanical properties that may be set apart and then influenced using creative chemistry, and the result is a number of distinct problem-solving opportunities for improving performance to a level that is unmatched by any of its contemporaries. By understanding these opportunities, several industries are able to develop excellent solutions to a variety of consumer needs.
Properties and Advantages
Broad Hardness Range
Categorizing polyurethane according to hardness, which starts at 20 SHORE A all the way to 85 SHORE D, is dependent on the molecular structure of the prepolymer.
Large Load Capacity
Polyurethane has a remarkably extensive load capacity both in tension and compression. Polyurethane that has been created for a specific application will simply change its shape in accordance with the heavy load it is subjected to, and then go back to its initial shape as soon as the load has been lifted.
Polyurethanes do quite well in particularly high flex fatigue applications. Since these polymers flex properties can be mechanically isolated, they make for an impressive ability to elongate and recover.
Resistance to Abrasion & Impact
For applications in which extreme wear proves challenging, polyurethanes are often the best solution, including in low temperatures.
Polyurethanes are also particularly known as tear-resistant and high-tensile materials.
Water, Oil and Grease Resistance
The material attributes of polyurethane have shown unusual stability (little to no swelling) with direct water, oil and grease exposure, and can perform well for many long years in subsea environments.
Polyurethanes possess good electrical insulation properties.
Broad Resiliency Range
Resilience is one of the general functions of hardness. When an elastomer application calls for shock absorption, low rebound compounds with a resilience range between 10% and 40% are typically utilized. If recovery has to be quick or the application comes with high-frequency vibrations, compounds in the 40-65% resilience range are used. In general, high resilience has a boosting effect on toughness.
During the manufacturing process, polyurethane effortlessly attaches to an entire array of materials, including metals, plastics and even wood. This particular property makes polyurethane ideal for making rollers, inserts and wheels.
Performance in Severe Conditions
Because polyurethane is extremely temperature-resistant, it does not degrade despite the toughest environmental conditions and exposure to various chemicals.
Mold, Mildew & Fungus Resistance
Polyether-based polyurethanes do not promote the growth of fungi, mold and mildew and are thus perfect for tropical environments and FDA applications. Certain additives also work to keep these microorganisms away from polyester materials.
Polyurethane is a material that is often used to make special parts and prototypes, as well as for large and iterative productions.