Development of polymers with improved heat transfer coefficients for use in encapsulating electronic modules is discussed. Chemical reactions for synthesizing the polymers are described and thermodynamic and physical properties are analyzed

Byrd, N. R.

Jenkins, R. K.

Lister, J. L.

English

NASA Technical Reports Server

June 1972	 B7210291 
NASA TECH BRIEF 
Goddard Space Flight Center 
NASA Tech Briefs announce now technology derived from the U.S. space program. They are issued to encourage 
commercial application. Tech Briefs are available on a subscription basis from the National Technical Information 
Service, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Office, NASA, Code KT, Washington, D.C. 20546. 
Improved Thermally Conducting Electron Transfer Polymers 
The problem: 
Currently, electronic modular components encapsu-
lated with existing polymeric materials do not dissipate 
enough heat. 
The solution: 
A newly discovered group of polymers that display 
excellent thermal conductivity can be used to allow 
rapid passage of heat. A variety of these electron-transfer 
polymers can be formed. 
How it's done: 
A group of polymers is prepared from phenol, 
hydroquinone, and formaldehyde. The normal phenol/ 
formaldehyde polymers have a thermal conductivity in 
the range of 6 to 7x10 4 cal/cm-sec-0 C. When hydro-
quinone is added a new polymer is formed. The thermal 
conductivity of this new compound is in the range of 1 
to 2x10 3 cal/cm-sec-°C which is an improvement by a 
factor of 4 over the previous type. 
Other polymers can be constructed using a multitude 
of different compounds. All of these new products 
exhibit a thermal conductivity at least twice the magni-
tude of that of known polymers. They are very useful 
as coating materials for electronic components.
Note: 
Requests for further information may be directed to: 
Technology Utilization Officer 
Goddard Space Flight Center 
Code 207.1 
Greenbelt, Maryland 20771 
Reference: T5P72-10291 
Patent status: 
This invention is owned by NASA, and a patent 
application has been filed. Royalty-free, nonexclusive 
licenses for its commercial use will be granted by NASA. 
Inquiries concerning license rights should be made to: 
Patent Counsel 
Goddard Space Flight Center 
Code 204 
Greenbelt, Maryland 20771 
Source: Robert K. Jenkins, 
Norman R. Byrd, and
James L. Lister of
McDonnell Douglas Corp.

under contract to

Goddard Space Flight Center
(GSC-1 1304) 
.
Category 04 
This documentwas prepared underthe sponsorship of the National
	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States
	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19720000290 2020-03-17T03:28:32+00:00Z


Improved thermally conducting electron transfer polymers

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