有谁知道SRPVC的物理性能测试要求?
公司现在在做一款线材UL2464 24AWG/4C,芯线用的是SRPVC,我想问一下,有没有人知道UL80C的SRPVC其物理性能测试标准是多少?(希望能提供有力的论据) UL1581上有 引用第1楼cableyzf于2008-08-29 10:40发表的:UL1581上有
楼上的,请头号UL1581的第几页第几章节有? table50.183 Table 50.183
Physical properties of 105°C (221°F), 90°C (194°F), 75°C (167°F), and 60°C (140°F) semirigid PVCa
insulations and 75°C (167°F) and 60°C (140°F) jackets from CATV cables, from power-limited
circuit cable, from cable for power-limited fire-alarm circuits, and from other cables
Condition of specimens at time of
measurement
Minimum ultimate elongation (1-inch or 25-mm
bench marks)b
Minimum tensile
strengthb
Unaged 100 percent 3000 lbf/in2 or
(1 inch or 25 mm) 20.7 MPa (MN/m2) or
2068 N/cm2 or
2.11 kgf/mm2
Aged in a full-draft circulating-air oven for the
specified timec at the specified temperaturec
70 percent of the result with unaged specimensd 70 percent of the result
with unaged specimensd
a Semirigid PVC (SRPVC) designates a partially plasticized thermoplastic compound whose characteristic constituent is
polyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate.
b Semirigid PVC is to be tested at a speed of 2.0 ±0.2 in/min or 50 ±5 mm/min.
c The oven time and temperature are to be as follows:
Temperature rating of
insulation or jacket
Specified oven time and temperature
h °C (°F)
105°C (221°F) 168 136.0 ±1.0°C
(276.8±1.8°F)
90°C (194°F) 168 121.0 ±1.0°C
(249.8 ±1.8°F)
75°C (167°F) 168 113.0 ±1.0°C
(235.4 ±1.8°F)
60°C (140°F) 168 100.0 ±1.0°C
(212.0 ±1.8°F)
d As an alternative to testing for retention of tensile strength and elongation, it is appropriate to wind aged specimens of the
60°C (140°F) insulation in place on the conductor onto a mandrel as described under ²Flexibility² in the applicable wire
Standard. Unaged specimens are to be tested for tensile strength and elongation. Where aged specimens that are tested for
retention of tensile strength and elongation show results that do not comply, it is appropriate to use the flexibility procedure
described under ²Flexibility² as a referee test. 可是楼上所提供的标准只有UL75C和UL90C的标准,没有UL80C,应参考哪个?
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