项 目
Items |
单 位
Unit |
要 求
Requirements |
结 果
Results |
抗张强度
Tensile strength |
Mpa |
>1.7 |
2.8 |
拉断伸长率
Elongation at break |
% |
>500 |
680 |
耐热性:100℃×7天(拉伸绕包在金属栓上加热)
Heat resisting property: 100℃×7 days(wrapping in the metal bolt to heat it after stretching) |
|
不开裂,不变形,断而无可见气泡
No split, no visible, no eyeable bubble |
120℃×7天,
通过 Pass |
自粘性(室温﹑水中48小时)Self adhesive(room temperature and water for 48 hours)
tage |
|
不松脱,层间无水
Not loosen, no water between layers |
通过 Pass |
工频耐压强度
Power frequency withstand vol |
kV/mm |
>20 |
22.5 |
体积电阻率
Volume resistivity |
Ω?m |
>1012 |
5×1012 |
介质损失角正切
Dielectric loss tangent |
|
<0.035 |
0.020 |
介电系数
Dielectric modulus |
|
<4.0 |
3.2 |
电碳痕指数(斜板法)
Electric carbon tracking index(by slanting board) |
|
>3.5 |
3.5 |