Shock Absorbing Sheet is a one-of-a-kind polymer that is visco-elastic, exhibiting properties of both liquids and elastic solids. This product is a thermoset polyurethane material that combines shock absorption and good memory with vibration damping and isolation properties. It is also a very effective acoustic damper and absorber. While many materials exhibit one of these characteristics, only this material combines all of them in a stable, extremely durable form.
First used primarily in shock-absorbing insoles, this material has since been vital in many other applications. Its sound damping abilities make it the perfect headphone lining. Engineering applications make good use of its incomparable shock absorption and memory. The combination of its physical characteristics still makes it ideal for premium shoe insoles; unlike fluid-based shock absorbers or foam products, this material absorbs shocks efficiently for millions of cycles.
By downloading any datasheets, MSDS sheets or any other materials from the website, you hereby agree and acknowledge that (i) each of these sheets or documents has been created by the applicable manufacturer, and as such Inventables is not responsible for the accuracy or reliability of any content or any recommendations or safety recommendations set forth therein, and (ii) such sheets or documents may not, in certain instances, be the most current or up-to-date available.
The material is a thermoset, polyether-based polyurethane material that combines shock absorption, good memory, vibration isolation, and vibration damping characteristics into one functional material. In addition, it is a very effective acoustic damper and absorber. While many materials exhibit one of these characteristics, It combines all of them in a stable material with a long fatigue life.
• It has a low creep rate compared to other polymers, like rubber, neoprene, and silicone.
• It has a superior damping coefficient, over a very wide temperature range, compared to any other polymer.
• Unlike fluid-based shock absorbers or foam products, it absorbs shock efficiently for millions of cycles.
• It eliminates the need for metal springs to return the system to its equilibrium position after absorbing a shock.
It is converted into a small amount of heat.
Depending upon the application, it can absorb up to 94% of the shock energy.
It can absorb over 50% of the vibration energy over most of its temperature operating range at frequencies from 10 to 30,000 hertz.
• Low durometer (30) it creeps about 8% under load and then stabilizes.
• High durometer (70) it creeps about 5% under load and then stabilizes.
The Shock Absorbing Sheet can be purchased with a fire retardant that allows it to meet the Underwriters Laboratory 94 V2 standard.
Generally, the shock absorbing sheet chemical resistance is very good, similar to other polyurethanes. However, avoid gasoline, alcohol, and plastics solvents.
A good vibration isolator lowers the natural frequency of a system to below the excitation (or disturbing) frequency. Keeping these two frequencies “out of sync” greatly reduces the problems of vibration.
A good vibration damper takes mechanical energy out of the system. Properly designed metal springs and rubber mounts can be good isolators but have almost no damping capability. Oil dampers (dashpots) have good damping capability but no isolation capability. Foam products can be good isolators but have limited life.
The shock absorbing sheet has a superior damping coefficient, over a very wide temperature range, compared to any other polymer. It’s operating temperature range is -40 °F to +160 °F (-29 °C to 72 °C).
Unlike fluid-based shock absorbers or foam products, Shock Absorbing Sheet absorbs shocks efficiently for millions of cycles.
Shock absorbing sheet eliminates the need for metal springs to return the system to its equilibrium position after absorbing a shock.
Shock absorbing sheet has wide applications in:
• Chock absorption in industrial, electronic, athletic and medical applications.
• Vibration isolation in industrial, electronic and ergonomic applications.
• Vibration damping in industrial, electronic and ergonomic applications.
• Gasket/sealing in industrial and electronic applications.
• Applications where low cost, high color plastic molding is required.
• High space efficiency acoustic absorption.
• High space efficiency acoustic barriers.
The stock size for this product is 12 in ×14 in × 0.19 in. It is available in grey or black.
If large orders are placed the shock absorbing sheet can be made in a variety of sizes and thicknesses. The factory can pour custom shapes, colors and thicknesses.
Its operating temperature range is -20 °F to 160 °F (-29 °C to 72 °C).