DC-3Dampin g Compound

Soundown’s DC-3 Damping Compound is a viscoelastic, spra y able liquid sound damper. It hasbeen found to be highly effective in reducin g vibrational resonance conditions in structures such as passen g er rail cars, elevator cabs, marine passen g er and car g o vessels, stainless steel boat sinks and other plumbin g fixtures, sheet metal marine panels, floor housin g s, and a multitude of othe r applications. DC-3 dissipates structure-borne vibrational energy and reduces radiated air-bornenoise. DC-3 is resistant to water and a variety of solvents, acids and corrosive gasses. It is non-toxic,non-flammable, almost odorless and exhibits exceptional aging characteristics.Water based and non-toxic, D C - 3 offers an efficient and effective alternative to solven t -basedsprayable damping products, as well as sheet applied damping materials. DC-3 can be spra y ed or toweled directly from the drum without thinning. After application, DC-3 cleans up with water. A t y pical setup to spra y
- D C - 3 consists of a 30:1 airless marine pump, a revers e -a-clean
airless gun with a tip size of 0.043", a ram and a surge boat tank. DC-3 exhibits exceptional adhesion to a variety of materials when properly applied, and air-drieswithin 24 hours at room temperature. The dr y in g time can be accelerated throu g h oven dr y in g using moderate temperatures. Its normal "tan" color may be varied for decorative purposes. KEY ATTRIBUTES OF DC-3 ? Sound Deadening Properties- OBERST BAR (SAE J-1637) METHOD - CompositeLoss Factor of 0.036 @ 150 Hz, 25 °C. Steel thickness 1.6 mm. Coating thickness 1.6 mm. ? Cold adhesion - when DC-3 is applied to a 10" x 10" x 0.035" panel of primed cold rolled steel at the rate of 0.5 Ibs.lsq. ft. ( dr y wei g ht ) , shows no loss of adhesion when sub j ected to two 25" lb. impacts from a two inch diameter, 1 % lb., steel ball at -20°F. ? Fire Retardant - Passes ASTM E-162 "Surface Flammability of Materials Using a Radiant Panel Heat Energy Source." ? Passes National Bureau of Standards and NFPA 258. Flaming and smoldering tests were conducted in an Aminco NBS Smoke Density Chamber, Cat. No. 4-5800.

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