Properties Behind the Advantages of Polyurethane
Polyurethane is a highly flexible elastomer utilized in various applications all over the world. The materials mechanical properties could be separated and manipulated by way of ingenious chemistry, which leads to various opportunities for addressing problems related to performance attributes to extents no other material has ever rivaled. Many industries have taken advantage of such opportunities, enabling them to devise highly effective solutions that meet consumers diverse needs.
Properties and Advantages
Wide Hardness Range
Polyurethane hardness can be classified as 20 SHORE A right down to 85 SHORE D, depending on the prepolymers molecular structure.
Heavy Load Capacity
Polyurethane has a remarkably extensive load capacity both in tension and compression. If properly designed for a particular application, polyurethane can accommodate heavy load by changing shape and reverts to its original form as the load is removed.
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
When serious deterioration proves very difficult in certain applications, polyurethanes are still perceived to be the best solution, regardless of low temperatures.
Polyurethanes are also particularly known as tear-resistant and high-tensile materials.
Water, Oil and Grease Resistance
Even when submerged in oil, water or grease, polyurethane has proven to be stable (hardly swells, if at all) and can survive up to several years when used for sub-sea applications.
Polyurethanes are good electrical insulators.
Broad Resiliency Range
In general, resilience is a function of hardness. a 10% to 40% resilience range. 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.
Polyurethane sticks to a whole variety of materials during the manufacturing process – wood, metals and plastics, for instance. 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.
Resistance to Mold, Mildew & Fungus
Polyether-based polyurethanes do not provide a life support system for fungi, mold and mildew, which simply means they are ideal for tropical areas as well as FDA applications. To prevent the growth of these microorganisms in polyester materials, special chemicals can also be introduced.
Less Expensive Process
Polyurethane is a material that is often used to make special parts and prototypes, as well as for large and iterative productions.