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Typical Dynamic

Damping Properties

Note: The following technical information and data should be considered representative

or typical only and should not be used for specification purposes.

Dynamic Mechanical Properties of 3M™ Viscoelastic Damping Polymer Type 830

(Without Foil)

Note Regarding Dynamic Mechanical Properties:

The shear storage modulus (G') and loss factor of a viscoelastic adhesive are two

parameters used to partially define the damping performance when used in the form

of a constrained layer damping treatment. The above curves illustrate these data

as a function of frequency and temperature in the form of a reduced temperature

nomograph.

While the damping performance of a constrained layer damping treatment depends

largely on the dynamic mechanical properties of the viscoelastic adhesive alone, it is

also dependent on other parameters. Namely the geometry, stiffness, mass and mode

shape of the combination of the damper and the structure to which it is applied will

also affect the damping performance.

To determine the dynamic mechanical properties at the desired temperature and

frequency proceed as follows:

1. Locate the desired frequency on the right vertical scale.

2. Follow the chosen frequency horizontally to the desired temperature isotherm.

3. From the intersect, move vertically up and/or down until crossing both the

modulus and loss factor curves.

4. Read the shear storage modulus and loss factor values from the left vertical scale.

Features

• Pressure sensitive construction for easy application.

• Excellent aging qualities of the 3M viscoelastic damping polymer type 830 provide

long term performance and has excellent resistance to most hydrocarbon and/or

aircraft type solvents.

• Wide temperature range for damping. Usable from -76° to 68°F (-60° to 120°C) at

100 Hz plus higher temperatures at higher frequencies.

• These linered products offer the user die-cut capability.

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