I N D U S T R I A L A N D E N G 1 N E E R I N G C PI E M J S T R Y
2444
Vol. 46, No. 11
--
IO V O L BLACK - 2 0 ~ 0 ELACK' ~ -30VOL B-ACK
I
-io
.
-50
-40
R - T ii PC T IC "I
RETRACTION TEMPERATUREOC
Figure 11.
Figure 10. Effect of Cure l i m e on Per Cent Retraction
-F
-50 V
-10
-20
C R A T L tR t.
C
EErct of Furnace Black on Per Cent Retraction
W
U
3 c
cs. n W
a H
-NO __IO
tW
60
PLASTICIZER PARTS DIOCTYL SEBACATE ----3O PARTS DIOCTYL SEBACATE
I I
50
i
G R - I - R-21 1~
lr t-
z
y
30
eo
lr Lu 0.
IO
-60
-50
-40
-30
-70
-10
,'tailor making" elastomeric polqiners to w i t h s t a d specific ion. temperature conditions. The determination of teinprature of maxiinurn deviation is believed t'o represent optinluni thermal conditions for oiimtatiori. and serves t o indicate the temperature range to \)e ainitied iti prolonged l o x temperature storage. No ntt'empt ha's been made as yet, tjo correlate (':TR deviatioii (>I* 1'6 with results in the field, exccpt that it has been found thal c.1astomera with a high insgnitudc of deviation, such as (;It-I-13.2 1, wiil r!nibrittle and hi1 8s f l i t 3 tempc~r.attir!:o f maxirnurii ticviat,iorr
'9-aporYreusure of 'Hydsr~fiuorkAcid SoI~tions--(=
