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Table 50.183$ R: t) @4 V( y. H: o0 Z9 v! p0 W
Physical properties of 105°C (221°F), 90°C (194°F), 75°C (167°F), and 60°C (140°F) semirigid PVCa: f, [- d3 B: N3 h* L& |
insulations and 75°C (167°F) and 60°C (140°F) jackets from CATV cables, from power-limited
/ Z0 @; u* c" a' f% O5 Lcircuit cable, from cable for power-limited fire-alarm circuits, and from other cables
8 w6 p8 o3 S; {
$ x- E5 D" W5 r. A; V. [9 pCondition of specimens at time of
! } ~* M5 I6 Jmeasurement
* {5 r! `% X. U! U7 C! pMinimum ultimate elongation (1-inch or 25-mm
# C: E; Z$ o% Q; `% [& L; A! P$ N2 ebench marks)b
: F' h/ I \& y0 J5 f" w' yMinimum tensile/ |, _" ^( `, L7 P8 w4 H0 A. ?# I
strengthb* n! @3 Q& B: [, ?( U# i
Unaged 100 percent 3000 lbf/in2 or7 F6 l! `* m& a @/ p, X* w. h
(1 inch or 25 mm) 20.7 MPa (MN/m2) or
3 A0 E, ^4 e, e) q" W2068 N/cm2 or S( D5 X, T7 M) q8 Z5 V
2.11 kgf/mm2
. }; K9 B+ j ~9 N0 g- i: o4 AAged in a full-draft circulating-air oven for the
9 f. K$ Q' {6 F* {3 _0 N/ qspecified timec at the specified temperaturec
2 b! G, Y6 }: `" o0 o# W70 percent of the result with unaged specimensd 70 percent of the result
; v: A7 D: ~/ p) I0 N0 Mwith unaged specimensd" L* e6 L; O, J: J! L: e- I
a Semirigid PVC (SRPVC) designates a partially plasticized thermoplastic compound whose characteristic constituent is, @# Y2 a. V1 } t% [- r; M- m% {
polyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate.
/ B8 z; L; ~$ {2 L% G0 hb Semirigid PVC is to be tested at a speed of 2.0 ±0.2 in/min or 50 ±5 mm/min.
5 W' E* M; \; h( Ac The oven time and temperature are to be as follows:" D) @* R$ l7 s0 S
Temperature rating of
5 r! w, a9 |+ r5 Z4 f/ H* [insulation or jacket
& g8 H" e& ?$ H( J7 vSpecified oven time and temperature
6 `3 `' m3 E5 F5 U, Fh °C (°F)
Q9 g% B! e6 V- r# O! j o3 g105°C (221°F) 168 136.0 ±1.0°C
7 F% p5 `/ K' _# H(276.8±1.8°F)) {6 N: }. ~7 d5 e" y& X
90°C (194°F) 168 121.0 ±1.0°C! M' [" n# k! ^1 o+ T$ ]8 z; c
(249.8 ±1.8°F)! M7 \% _! c+ I" r& b( C
75°C (167°F) 168 113.0 ±1.0°C0 E2 I8 [$ E! ?1 n
(235.4 ±1.8°F)
: u, q! L' Y2 J' d) Z60°C (140°F) 168 100.0 ±1.0°C- ?0 d- V6 d: t3 w3 x% z
(212.0 ±1.8°F)9 p7 e9 l% J& V! B l& P8 ^1 _, C
d As an alternative to testing for retention of tensile strength and elongation, it is appropriate to wind aged specimens of the4 @ q4 |* ^& ^2 p% I! ^
60°C (140°F) insulation in place on the conductor onto a mandrel as described under ²Flexibility² in the applicable wire9 M' U" N4 e2 h# j5 K; F# C( T
Standard. Unaged specimens are to be tested for tensile strength and elongation. Where aged specimens that are tested for
( V. m, R3 w+ Z: Tretention of tensile strength and elongation show results that do not comply, it is appropriate to use the flexibility procedure) v3 ^0 [! Q1 }! G( o; d
described under ²Flexibility² as a referee test. |
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