NATIONAL BUREAU OF STANDARDS REPORT

NBS PROJECT NBS REPORT

1000-30-4'•<30 January ) 9 > i 9 % 3063

?mR'-AJ Co; iT'CTi :ooTr ' o t : - T- ;to W OT

by

Thmaas T. 'at sen

Deorv D.

-eatirs<“ Air Conn^ uionin^ ..ection

waildiii'; Tecl>nolo^-y Division

to

Office of The ' *«3rterr-.ast4^r '.-eDeral

Depart ' ^ent of The Ar:::y

U. S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

Approved for public release by the

Which a report has been specifically National IllStitUtC of

Standards and Technology (NIST) on October 9, 2015.

id unless permission Is obtained In writing

s not needed, however, by an agency for that particular report for Its own use,

I. IJJTEODUCTIO^I

At the request of the Office of The =*jarteraaster

General, reference File dimj 095. letter dated Secterr,-

ber 2S, 1953, thermal conductivity aeasureiaents t^ere

made on three rubber-like tsaterials to determine their

valu®.

S.ai?!T:;3.e

i.''i 0 i

2. MATEEIALB

1 Two inch Tan Tow d^nsitj- Arctic rubber

2 Two ^x^x0,5 inch Green Easolit© ¥22^23

3 Two BxBxQ^h inch Tan high density Arctic rubber

3e TEST i^lETHDD- ABB P^OCtBlIHE

The eonductiyity of the BpmS.tmn% was

Pleasured in m ^-ioch guided: hot-plate apparEtue conforming i^th the reciUlre»iert8 of Fed. Spec, LLL-F-321b

and of k&T¥ C177-45.

4. EISIATS

A sunmiary of the test data is girm in Table 1 and

a plot of thermal corductiyity yerpus wmin teicparature

is showi in Figure 1.
-M»#^t .6«#3’> .?«e t.S5iiV ,i6is«5S

sn^»» at»«wt«ft»s^ - t'-’^

t.tirf.'* s!jUrfi».*«t> «>,j ailii'-Ma*® .'..ilX''i«®W< 95ts«» (jo »!>b»

.0vt^ mlJBltmai

,

*

\

- {s-iAj'Sfl'aM .s

siiijKfif;

ssU/jTOl

,.i;4^f^i::,# mA te

,a

.

' *..j 0'-j&?^l''l ^.l
- 2 -

A plot of ther-.«l conductivity of the opeciBior.B

at 30*F mean teaporature (K^g. BCT/hrft^ (deg F/ineh)

voraus density Ib/ft^ i* shown in Figure 2. Data fro..

833 Eeport 2547 are Included «lth the data of the present

report, as a matter of interest. It is to be noted that

the”conductivlty is approximately proportional to the

density, especially at the lower densities.

!

;

i

IT. -- V O i

- „ , ..p . •

.

'i.v

-m-f

.<.1 i

tS;

,,,-1 ,
: K<’

SVsSSi'?

S - ;-V',V,\sv5;.'-r: •C;V^ ...

ff”.' .

s«6} VjrrtS,S?g «^£S} 9w.i^s^»|«»a Bgfie 'l*Of ^a

. t 9T»f« ttf1««S- *.i^

•:%’#BrrSlfei9irt oT« ^4?£ rf-twsa ea«

•tatfef . S»4'te 'W *r:;^' '

"m«»» s g«^ ^ «<fir «

, ': .. .

<'*

' ' ' V. ^

'r, r

^ ‘ ;-;•!»• "irfe..'. . „. ,.

, : ,tc"

"

... .,->V'r '':,c.,

” ; V-''' . '.

.

'd

, Vv::

.-.;/-V •• 'i'-, vl;.

,'

, -: 'i

''f

^

'

•

'

,

,' '

'. ''

> .'>••1

>• '-‘f

•

' ^ - ' -C:h^

-

. •; V

''.'t/'i

• ' *‘.V

• •' •..< r. ' », V-,' •

;‘ ,{:f.V,' • .r,',- . .'S' s' V -.''

‘•)f, '.•\ 'rf,vy.

•• ,. /' - 'V

1 . ;«*' *<•.. •Z!,:(b : j. •<
f~* cO « I i4- >-

pai *-4

shO

c*

<C. . 

r

8S 'O

cs &

<S 4^ Xi G (» O A a « O +J *r! •rt jC W

iH «B

Sp

X5

>-.

O

+> « +:> * e ^

::

'0c>

O ttr.sO fH O' %

rH r-4 >J0 »A r-j ©V P

ig

O

© • • • • • • e rH O V* P

4? X SJ

®? c

4? « «! e X 0> X m P

k:: S3 •n • X ©

x f4 © © - •- j X of

® o — fen K!

X o s: ..a: P

&5

€ <H

© *p

In ^ K 3 S5 X

•rt .»

X P ©

U i^ < G

t4 t!3 -fS 0»H 0^-1

4i

© 4 P 4*.’ P

'v. • • • • * • X iw « a j3 1 ' • ci i&( . ©VCN turs{>- O . S Si ®

0'p i' -4' -4“ -4-4 *P Xt

......

O r~i

O ..ip .©

©© P © S> 4.i

f-. *D . - ' 1 .. • lt:'’,r

p iX.'^ <-4 . K O » •*?!.

V<M>. - -CNtC

#-<

O <»Nfn C%?M

VTl UN • • • • • • o

‘ts- ss

X -©

tl 33

D sa V*

¥4

X 05 43^- C

0>

0!

t)

m

Si o X

X5 S-* ’tS e sj ®

S3 1; ^ o

>ri 3

-P

a «> 4^ 4? fti; li 3

o; ^

0<v• • oo ' r4'

nOxO • •

1-4 rn

O0V• •

4-? «

Sgr-4 S ?>>

S3. sS ffiH

tf; 5s 5S *>

t?5 p*4 i3 4 • •• "'

S? Ci,4-i • «s ^ c © 1 ' ;•' i-.: ' ' '

,_t. s0«-i • • • • • •

«?

®

® ” a.

to

“• <<\crr CM CN" " cno ^C4 sQ€^ \ }.^ .-... : - 1 ' !''•• , * » i 4 . . • 1’ . L.-,;- «3® : ’ • , 1 1 :^ '

<P . w

-.;t ...._ 
 . : fc - ;:! ro

rl f\i ' t * L -:::o

Uj'

m

®

-p

p

f3

(2 ^

$4

r-f P 3 S3 SS <3 *H jp., -® i© -

S>u . . _ , <r ^ p (4 o o P \£> ‘C ^ ® © cs 14 P © © XI p

e>

pX 4» c o w 50 C? X *H P 4' © P iS X iU X

*rxC 3 ©

M

X

O

C P X «i

H

C 0« i3

O P

-ft
H

t

m " »

<&• iS K,

» j;s»c <!»=. mf: # r^.^l!^-^'..

,. ,vS . #,• ,<ir ^-<3

4i;- & ^ 0

« «Si «J M *;, » 4 «

;:, '1^, ,wi Ci,_

•’5 ji Hf> 4f.-%, O ®

wt

'HfM'

ju # u ,a O- 5a. ili w ^ ti- 1® »,'3Sv5» #. »

f;

. ® ^ f» Ik- > »

H* ». a'. <*> 'a

.1®' in 55L -& .-»^ fk- 4 © iS- E

?'?* 3*

^S

»5 4 f« ^

^ •>'^ # tti w M ^

•*4. t*. 'ij;

\f'

“« « !»f» jst *s » ^ a

!» t?> A < wi>i .. hv'<T ^

nk ?i(« *4- 7« <;* 0

i# 4. t* «» W' <4 O y

<¥4 j^i^* T?>*Y

'**•

’’ 1 .0.

, ^ %r1^'-, ' ifh •« ^ «*“« X - a. in

'r- • o v>*»

'. vj-S^*. -X- - ».

• » H -4 j-» H» >»# >-^T |lSi 3*<» 0,4- ,X tj. Sf 4 w /in S^. - ^«ix ^rti _ ,'. ; =' f*'f' ^; . : iu> r, <5

» p 4r «'

'f 9 W yf’p'

, O

S' 3 8 SmM* '.^.

''lv«£?r:

-.

. .

1U»

« -i ®

‘a ^ hv

in* , <?

# '»5(; #

<> S5 t*. f?

vj? Hh

Ss,

H.O

« *

•fe-it"

'/S;V9

• «

ip>n 4J.' s «

iip'

« * •»

/n*y<t# -f^

4 <» i »c

o- ©# e ‘ * •* •

V**» o o

-"3

O « 4

<t5 m

n <if S<« Q>

«

ih»» *^r »5 tl .T4

‘*!(« <S ''-4

\pi n

^,^^ 3J

«fi* )~|

Ci'

» tie 0, 'Ci> 0 ^

r. ^

<ie lA.

Q/, W

99 tX

19*

«y. X

i^-4 <4

44 ^ •*** Mi S ^<4 ia 4 «

ta

( X

i «

3 ^ ® 1?. ‘"5 Si

* a O D •-!

S3

<»

-a

<rt»

V3
MEAN TEMPERATURE 1 FIGURE I
f-y

*'
zzi±t

-iHj 4-Cr-;: lUr ::;:n. nii: ’Tn: -:4 :i4Tf 1?: mr X3 T i-t +

-K utf

rTt.

i-+4- IH

H

T-rr IX

rt-

-Hi: P4=

ti; ttE

-rrii :U±•f" ;J±rr 4±t

IX !i± :nx

fl-H-

^tt-" ;ilX #4

m- -'n-\T ri"T-- rpr ~ xf:

:Hx-T

-dd- --mi

mttmi

iix

mu -;-j-i 4- TT^

r^TT

rixt mu =m V

-zUi

urn ^ .5

m-

*- m _ xa .... !-f- -if- mi-'

im T±i- :m:

TiXt lii

mi ix 4-

-ixx- -

tlX'' iux

mi

as

ixt

:tt±h

" Hj ji

t'iT-I- U- dim

^-ii rn: m-T a m3 x& IXE^ ixt:

mi

XpX mo

Ui

o

CMVUI q:

X

3

hGD

O

to

in;x.u

im

m.mtr itmi

rrrl m

lii

^i-r

ixr. me

0=4 3H5

EEemH

Imi IT i?

tm 6m

+TXtit

S®

-rix- -rf^-a

r- i-Ulu 'mr '.pX:

l—L; Um

xn:

MXr- HH:

TrIt lit xt mm

-tr4 ii -^-;- II H- it

mii “-r-f-;- tip- x-m: tft ixp_i m- ii

mi' tm mm irn:

it m

- 1- am

urn

ip; rrn

4--i nl t

1 -X-

-rlT Ht

i-m

iP-*- Pi imm ip:

-pm 35

•-rpi mm tu pm iti

am

+--

:P-T -ri'- ia'-

a®

m Hm- a

la

ff

ffi}P4

U;4

tt a

np a EHHH

i

CiX 1

XLrci j rf'r im

PX.

Ea

p: a® mj- mp1-Er a

-rh-!- TPlriLa

f

a

a H-a

m

x-EE:It a J

p-pr ax H

Em

4.-HE lH:±e

aa

35

i-j i-xt a 1 m -a Hi a iatax

54a-rm li

..-4- Xtpi: :a

i

XL

P.aa

e:

0

Har:ia

EPr am

mm

mmtm, EE

0 lO

DENSITY

I5 20

lb/ft^

25

FIGURE 2

f 1^.. /i\}