Bronze wool pads, impregnated with silicon rubber, meet the requirement for a thermally conductive, shock and vibration absorbing material. They serve as spacers in equipment mounting and are resistant to high temperatures

Hough, W. W.

English

NASA Technical Reports Server

April 1964
	 Brief 63-10207 
NASA TECH BRIEF 
This NASA Tech Brief is issued by the Technology Utilization Division to acquaint industry 
with the technical content of an innovation derived from the NASA space program. 
Thermally Conductive Metal Wool-Silicone Rubber Material Can Be 
Used as Shock and Vibration Damper 
The problem: For certain space-vehicle applications 
there was a requirement for a thermally conductive, 
shock- and vibration-absorbing material that would 
serve as a spacer in equipment mountings, and be 
capable of withstanding temperatures of 255 S F for 
24 hours. 
The solution: Pads of bronze wool impregnated 
with a silicone rubber. 
How it's done: Commercially available bronze 
wool is first formed into thin mats, which are then 
placed between two metal plates that have been 
spread with an uncured silicone rubber. A pressure 
of 50,000 pounds per square inch is applied to 
the units in a hydraulic press for a 24-hour curing
period at room temperature. The resultant product 
is a thin sheet or pad of thermally conductive, shock-
absorbing material. While not new in concept, it 
was found to have a better combination of elasticity, 
heat resistance, and thermal conductivity than similar 
commercially available materials. 
Note: 
Suggested uses for this material include shock 
and vibration absorbers, pressure-sealing gaskets, 
and r-f shielding gaskets. 
Patent status: NASA encourages commercial use
of this innovation. No patent action is contemplated. 
Source: William W. Hough
Jet Propulsion Laboratory (JPL-32l) 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States Govern-
ment, nor NASA, nor any person acting on behalf of NASA: A. Makes 
any warranty or representation, express or implied, with respect to the 
accuracy, completeness, or usefulness of the information contained in
this document, or that the use of any information, apparatus, method, 
or process disclosed in this document may not infringe privately-owned 
rights: or B. Assumes any liabilities with respect to the use of, or for 
damages resulting from the use of, any information, apparatus, method, 
or process disclosed in this document.
https://ntrs.nasa.gov/search.jsp?R=19630000022 2020-03-11T16:44:57+00:00Z


Thermally conductive metal wool-silicone rubber material can be used as shock and vibration damper

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