NATIONAL BUREAU OF STANDARDS REPORT

THERMAL CCNBUCTr/ITY fiEASUREl'ShTJ

OF EIGHT RUBBER-LIRE MATERIALS

by

Henry E. Robinson

Thomas W. Watson

Heating and Air Conditioning Section

Building Technology Division

to

Office of The Quartermaster General

Department of the Army

0. S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

NBS PROJECT NBS REPORT

1300-30-4700 June 5, 1953 2547

Standards and Technology (NIST)

on October 9, 2015.

i. xwtmm?nm

At fcfec of the Of of Th* ’ssrfcer^astffr

Scncral , .reference File >n38J 095* latter dated ? arch 1 , 1953* tt*«r ml conductivity t lasar^. art.-- mrt. *• •- o*5

eirht rubier-like materials to doters&ac t* «ir inti®!®**

tics v-J .

1

2

3

k

5

6

?

$

i *9

n. MTi.ii i Ai-0

,4ae

Two EartSscO.J inch

Oac #3tb«0*4 inch

3x£x0«2 InchC*« $x&x0#5 inch

Cm- &k7.6xO* 5 inch

• ;n« **xv; * 5^: • • 4 Inch

fit® 0x&x0»6 in cl

no Sgir£x&«9 inch

Cm kxkxXfl inch

fcacrirtior

Oliver drab emcolibe

Elect artic rubber

I1-- rt neoprene

Green en solite

But &ok arc1 1 c rubt er

Blade arctic rubber

(higher density)

Gray f¥€

mit® rm

are*ft ? oycXite

(l. .Tab Ur Co.

,

* $m pic wa* not suitable In als© for &*&»unseat, of

it-.:: thermal conductivity.

III. TF':T‘ ffEfhOD .0:1 iO'COOl,

The thermal ccaduetivity of tee cpcelaern* wa raeccured

in m £-iocb guarded hot-plate apparatus cor-Ur&ir; • with

the rwftoiw&rmnts of fob* Jpcc* lit- -321b a- f of

A5TX €177-45*

17. iiamfi

1 susssiury of tfe# boob data is given in '."able 1 and

a plot of thermal conductivity veraua naan tempera tour* is

shown in fig. 1.
fi-.rn.nevrm *

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'?'•• Xr 7 7 i -.iJ-i-.: -si? 7;/ 7- •.

: a . »7£..V i,l * ;; 1.7 17.;^ £

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ITY

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Warn Tfeerwol

f««$>. Density *Thiekae»* ?Mp*grsdi«Bt Conducts yi%y

Sped- at m Tested as tested in spec. SfU/hrft*

mam pec. ,F lb/ft5 inch deg F/iwefe (deg T/imh)

1 66.6 5.4 0.326 65.2 0.253

29. a 5.7 .30-# 71. S .231

2 64.1 7.6 .411 69.2 .290

29.3 7.9 .392 50.6 .276

3 66.1 kmS • 25« 77. « .2$i

29.2 9.1 .243 •13.6 • 244

4 66*4 15.1 .52# 39.2 *434

2^.9 15.1 .531 36.9 .424

5 66.7 19*2 .479 61.0 .524

29.9 1H.4 .474 63.1 .514

6 €4.7 25.0 • 419 50.9 • 6-46

29.1 24.9 .419 41.6 .627

7 67. £ 4.

9

.774 30.5 ,266

$ 67.4 4.2 .930 25.1 • 262

9 «w 5.6** ** «H» *»

s Thickness of as tested, necessary to obtain good

thereat eantast with the test pistes. The sae* total prasaure

(about 10 lbs on 64 sq.ln.) was applied on sect aped-, on during

the tests at Mi# asd low aeas temperatures, "‘be differout

tr.ieltnossos observed were apparently doe to dinensicKal c* antes

with tear temperature.

se Material was not tested but density m j calculated.
** ’ ••••-- *> - ‘

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FIG. I