试验项目
Test Item
要求
Requirements
实测值
Results
测试方法
Test method
抗张强度
Tensile strength
>2.5 Mpa
3.2
GB/T1040
拉断伸长率
Ultimate elongation
>500%
660
耐热性:100℃/168h
Thermal aging
不开裂,不变形,无可见气泡
No crazing, distortion and obvious air bubble
通过
Pass
GB/T7141
自粘性(室温﹑水中24小时)
Self-adhesiveness (room temperature, in water, 24h)
不松脱,层间无水
Not releasing, No water between layers
工频介电强度
Dielectric strength
>30 KV/mm
35
GB/T1408
体积电阻率
Volume resistivity
>1×1014Ω·cm
4.8×1014
GB/T1410
介质损失角正切
Dielectric loss tangent
<0.035
0.018
GB/T3048.11
介电系数
Dielectric constant
<3.5
3.1
GB/T1409
电碳痕指数(斜板法)
Anti-tracking voltage
>3.5 KV
3.6
GB/T6553