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STHE EFFECT Or TIMI_(1P ATUIR ON CERTAIN MECHANICAL
PROPERTIES F IFIOREST PIOIDUCTS LABORATORY,
PAPER PLASTIC (IPAPREG)
T*M document contains classified information affecting
Slthe Nadtionalm Defenue of the United Slates within the
lianinli of the Espionage Act. USC 50:31 and 32. Its
tralulasilm or the revelation of its contents in any
uawmer to an unauthorized is A ltIF y
Si ciian officer. and employees of
(he Faderl Government who have a legitimate intermt
tbekel, and M United States Citizens of known loyalty
amdl dwretion who of neceaity must be informed
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This Report is One of a Series
Issued In Cooperation with the
ARMIY AIR ORCICS
BURIIAU Of AERONAUTICS
Under the Supervision of the
UNITED STATES DEPARTMENT OF AGRICULTURE
(( ,.,FOREST PRODUCTS LABORATORY
I Is Cepwtlm *ith the Univemity of Wirum
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Digitized by the Internet Archive
THE EFFECT OF TE PEPATUBZ ON QERTAIN MECHANICAL PROPERTIES
OF FOREST PRODUCTS LABORATORY HIGH-STRENGTH, CROSS-LAMINATED
PAPER PLASTIC (PAYFREW)-
This report presents the results of a series of tests- to determine the in-
fluence of temperature on the strength properties of cross-laminated papreg.
The material was furnished by the Forest Products Laboratory and the tests
were made by the Monsanto Chemical Company.
The tests included bending, tension, edgewise compression, and impact (Izod)
for cross-laminated material at -800 C., -25' C., 250 C., 1000 C.1 and 1500 C.
The material consisted of 1/8-inch and 1/2-inch panels, made of Mitscherlich
laminating paper, impregnated with Monsanto Resinox 465 and Bakelite BV16303,
and pressed at 250 pounds per square inch. The resin contents, based on the
weight of the treated paper, were 38.8 percent and 3.O percent, and the
volatile contents 5.2 percent and 4.5 percent, respectively, for the Monsanto
and Bakelite resins.
Five tests each were made in bending, tension, flatwise and edgewise (Izod)
impact, and compression, for each of the five temperatures. The sizes of the
test specimens were as follows:
Tension: 3/4 x 1/8 x 9 inches, with center section reduced
to 1/2 inch.
Bending: 1/2 x 1/8 x 4 inches, tested over a 2-inch span.
Compression: 1/2 x 1/2 x 1 inch.
Izod: 1/2 x 1/2 x 2-1/2 inches,
The results of the tests are presented in Table 1. While the data are not
based on extensive tests or a wide variety of products they, nevertheless,
give an indication of the effect of temperature on this material. Of the
values obtained, those for tensile strength are probably the most accurate
and those for flexural strengths the least accurate over the temperature
Further and more extensive tests on the effect of temperature and other
factors on the strength of papreg are under way at the Forest Products Lab-
l-This mimeograph is one of a series of pri ress reports prepared by the
Forest Products Laboratory to further/,- ion's war effort. Results here
reported are preliminary and may be revised as additional data become
-By D. Telfair and R. U. Haslanger, Research Department, Plastics Division,
Monsanto Chemical Company.
Mimeo. No, 1321
Table 1.--Influence of temperature on the mechanical Eroperties of cross-
laminated, high-strength laminated paper plastic (larreg).
Temper-: Reir. : Mechanical properties
at'ure: uei :
at : :Utltimate: Ultimate :Modlulus: Impact ; Impaet :Moclulus of
test : :tensile :Comrpressive: of : strength : strength :elasticity
:strength: strength :rupture:(flatwise) :(edgewise): (tension)
: Lb per
-800 C. :Recinox : 38,200
6. r 4
-25 C. :Rezinnx : 34,300
25 C. :Resinox : 2,200
100 C.:Resinox : 17,500
15,)6 C. :Resinox : 12,900
:Bakelite: 10,200 :
Lb.per:Ft. lb. Eer:Ft.lb. per: 1.000 lb.
sq. in. :in.of notch.in.of notch:per s. in.
Mi-eo. NO. 1321
'jEaERST 1 OF FLORIDA
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