Nonflammable paper is made from fibers of chrysotile asbestos, beta-glass fibers, glass microfibers, and a little nonflammable organic binder. It does not propagate flame in an atmosphere of 16.5-psig oxygen, and it is resistant to rot and mold, making it acceptable as wrapping material and for stored documents

Armstrong, G. K.

English

NASA Technical Reports Server

November 1970	 Brief 70-10546 
NASA TECH BRIEF 
NASA Tech Briefs announce new 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 Clearinghouse for Federal Scientific and Technical 
Information, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Division, NASA, Code UT, Washington, D.C. 20546. 
New Type of Nonflammable Paper 
An improved nonflammable paper is made from 
fibers of chrysotile asbestos, beta-glass fibers, glass 
microfibers, and a little nonflammable organic binder. 
The combination of Lengths of fibers is significant. 
The paper is designed to replace combustible cellulose 
writing and offset-printing papers; it does not propa-
gate flame in an atmosphere of 16.5-psig oxygen. 
Addition of chopped polybenzimidazole fibers to 
this base improved the tear strength but caused unde-
sirable mottling of the surface. All of several organic 
binders (fluorocarbons and a carboxynitrosorubber) 
tested produced papers better than compositions lack-
ing binders. A paper wholly based on inorganic non-
flammable materials had better tensile and tear prop-
erties than had any earlier papers having similar bases. 
Earlier papers composed of nonflammable inorganic 
fibers were too weak and lacked sufficient tear strength 
and crease resistance. Conventionally flame-proofed 
cellulose papers could not pass the flammability test 
in 16-psig oxygen. 
The successful paper is suitable for any appliation 
requiring a nonflammable paper that resists rot and 
mold; moreover it may be used as a catalyst support 
or for special gaskets. The paper may excel in environ-
ments detrimental to cellulose papers, in disposable 
draperies, as a wrapping material, and for stored docu-
ments. 
Note: 
The following documentation may be obtained 
from:
Clearinghouse for Federal Scientific 
and Technical Information 
Springfield, Virginia 22151 
Single document price $3.00 
(or microfiche $0.65) 
Reference: 
NASA-CR- 101977 (N70-10026), Nonflam-
mable Paper Composition 
Patent status: 
No patent action is contemplated by NASA. 
Source: Glenn K. Armstrong of 
Dynatech Corporation 
under contract to 
Manned Spacecraft Center 
(M SC- 13432) 
Category 04 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19700000528 2020-03-17T00:36:38+00:00Z


New type of nonflammable paper

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