ASTM D149脲甲醛树脂溶液中不挥发物含量的标准测试方法
日期:2012-02-08 16:37
sic dielectric strength, direct-voltage dielectric strength, or thermal failure under electrical stress (see Test Method D3151).
1.7 This test method is most commonly used to determine the dielectric breakdown voltage through the thickness of a test specimen (puncture). It is also suitable for use to determine dielectric breakdown voltage along the interface between a solid specimen and a gaseous or liquid surrounding medium (flashover). With the addition of instructions modifying Section 12, t
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