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Properties of Polyurethane Polymers

Polyurethane is a multi-purpose elastomer popularly used for innumerable applications around the globe. 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

Wide-Ranging Hardness

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. As long as the polyurethane is well-designed for the purpose it is used, it will be able to take in an enormous load before changing back into its original shape the once it is freed of the said load.

Multiple Uses

Polyurethanes do quite well in particularly high flex fatigue applications. Because flex properties in such polymers can be isolated, manufacturers are able to give their products very good elongation as well as recovery properties.

Resists Abrasion and Impact

Even in low temperatures, polyurethanes are the most preferred solution in applications where severe wear is a problem.

Tear Proof

Polyurethanes boasts high tear resistance as well as high tensile properties.

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.

Electrical Abilities

Polyurethanes possess good electrical insulation properties.

Wide Resiliency

Hardness has a few general functions and these include resilience. When an elastomer application calls for shock absorption, low rebound compounds with a resilience range between 10% and 40% are typically utilized. A 40% to 65% resilience range is needed for an application where fast recovery is a must and high-frequency vibrations are involved. Generally speaking, toughness is improved by high resilience.

Durable Bonds

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.

Severe Environment Performance

Polyurethane is highly resistant to temperature extremes, which means harsh environmental conditions and a long list of chemicals are not going to cause material degradation.

Mold, Mildew & Fungus-Proof

Polyether-based polyurethanes do not promote the growth of fungi, mold and mildew and are thus perfect for tropical environments and FDA applications. Special additives may be added to avoid such growths in polyester materials too.

Cost-Effective Process

Polyurethane is usually used to manufacture prototypes, and for both one-time and large, repetitive production runs.

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