聚四氟乙烯薄膜
聚四氟乙烯薄膜
聚四氟乙烯薄膜是用聚四氟乙烯树脂经膜压烧结成毛坯,经车削制成的薄膜为不定向薄膜,不定向薄膜经压延制成定向和半定向薄膜。
1、分类及用途
牌号 |
产品名称 |
分类 |
用途 |
9201-1 |
电容器薄膜 |
定向 |
用作电容器介质等 |
9201-2 |
导线绝缘用薄膜 |
定向、半定向、不定向 |
用作电器仪表绝缘等 |
9201-4 |
衬垫用薄膜 |
不定向 |
用作绝缘密封衬垫等 |
2、外观
聚四氟乙烯薄膜不允许有孔洞、污垢、机械损伤、皱折及导电杂质,薄膜端面应平整,边缘不允许有裂口和皱纹。
3物理机械性能应符合下表要求:
序号 |
实验项目 |
单位 |
指标值 |
|
定向薄 |
不定向薄 |
|||
1 |
拉伸强度 |
MPA |
≥30.0 |
≥10.0 |
2 |
断裂伸长度 |
% |
≥30 |
≥100 |
3 |
1MHz介质损耗角切值 |
|
3.0×104 |
-- |
4 |
1MHz 介电系数 |
|
平均值 |
— |
5 |
直流击穿电压(常温) |
Kv/mm |
平均值200 |
平均值40 |
本标准符合QB/T3627-99轻工行业标准。
4、规格及允许误差:
牌号 |
分类 |
厚度(毫米) |
厚度公差(毫米) |
宽度(毫米) |
厚度公差(毫米) |
长度(米) |
9201-1
|
定向 |
0.03,0.035 |
±0.002 |
60,90,120 |
±3.0 |
≥50 |
0.04,0.045 |
±0.003 |
60,90,120 |
||||
0.05,0.06 |
±0.004 |
60,90,120 |
||||
9201-2 |
定向 |
0.03,0.04 |
±0.003 |
60,90,120 |
±3.0 |
≥50 |
9201-2
|
定向 |
0.05,0.06 |
±0.004 |
60,90,120 |
±3.0 |
≥50 |
0.07,0.08 |
±0.005 |
60,90,120 |
||||
半定向 |
0.03,0.04 |
±0.003 |
60,90,120 |
±3.0 |
≥50 |
|
0.05,0.06,0.07 |
±0.005 |
60,90,120 |
||||
0.08,0.09,0.10 |
±0.005 |
60,90,120 |
||||
9201-3 |
不定向 |
0.05,0.06,0.07 |
±0.010 |
60,120,150 |
±2.0 |
≥50 |
0.08,0.10,0.15 |
±0.005 |
60,120,150 |
≥20 |
|||
0.20,0.25,0.30 |
±0.03 |
120,200,250,300 |
±3.0 |
|||
|
车削板 |
0.5,1.0,1.5 |
±0.05 |
120,200,250,300 |
±3.0 |
≥15 |