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capacitors and polypropylene metallized zinc-aluminum films

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Polypropylene edge thickened zinc aluminum safety film

total supply
100000 kg
MOQ
100 kg
brand
赛福电容
area
AnhuiTongling City
Delivery period:
Shipped within 3 days from the date of payment by the buyer
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area:Anhui Tongling City

Member level:corporate memberYear1

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Anhui Saifu Electronics Co

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Product Details
材质:
铝锌-塑料
厚度:
3.8-15μm
容量偏差:
±2%

聚丙 烯边缘加厚锌铝安全膜  MPPAZFH  产品描述

在薄膜表面上蒸 镀 一 层 很薄的 锌 、 铝 金 属层 ,可以得到自愈性 优异 的 锌铝 金 属 化 电 容器用薄膜。

金 属 化薄膜的最大特点是具有自愈性,即 当 某 处击 穿 时 ,短路 电 流使 击 穿部位周 围 的金 属 膜熔化 并 蒸 发 而又恢 复绝缘 性能,因此 显 著 减 少 纸 或薄膜中 贯 穿性 导电 疵点和弱点 对击 穿强度的影 响 , 从 而提高工作 场 强。

金 属层 的厚度一般 为 5nm ~ 50nm 。 国际 上金 属层 的厚度可 达 到 1nm ~ 500nm ,但 从 耐 热 性方面 来 看, 优 先 1nm ~ 100nm , 从电 特性方面 来 看,更 优 先 5nm ~ 50nm 。

在相同蒸 镀 金 属 的 条 件下, 镀层 厚度δ越大,方阻 值 (Ω / □)越小, 电 阻 R 也就越小,承 载 的 电 流就越大,但自愈性能 变 差。

锌铝 金 属 化膜采用 边缘 加厚蒸 镀 法,大大降低了薄膜 电 容器的 喷 金 层 和芯子的接 触电 阻,提高了 电 容器的品 质 。

■ 特点

安全防爆金 属 化膜其金 属极 板被分割成若干 个 小 单 元, 这 些 单 元之 间 由熔 丝连 接。 当 非自愈性 击 穿 发 生 时 ,熔 丝 熔 断 , 击 穿 区 域被切 断并 隔离。由于 电 容器 单 元由非常多的小 单 元 组 成,因而被隔离的小 单 元 对电 容器的容量影 响 是微乎其微的。

锌铝 膜( Zn/Al )的耐 压 性能 较 好

锌铝 膜( Zn/Al )的耐 湿 性不好,易 氧 化

卷芯

 

1. 材 质 :塑料

2. 宽 度:膜 宽 度偏差± 0.3mm

3. 内 直 径 : 75mm +1.0mm/-0.5mm

 

■ 膜卷的外直 径

 

分切宽度 W

Slit widths

推荐外直径 D

Recommend outer diameter

4.5mm≤W < 10mm

140mm≤D≤185mm

10mm≤W < 25mm

150mm≤D≤185mm

25mm≤W < 50mm

150mm≤D≤240mm

50mm≤W

150mm≤D≤350mm

金属化膜技术参数 Specifications of metallized film 

金属化聚丙烯薄膜 (MPP Film) 

 

性能

Properties

单位

Unit

要求

Requirements

密度 Density

g/cm 3

0.905±0.005

厚度 Thickness

µm

3.8 ~ 15

抗拉强度

Tensile Strength

纵向 MD

(MPa)

≥100

断裂伸长率

Elongation at Break

纵向 MD

(%)

40 ~ 200

热收缩率

Heat Shrinkage

纵向 MD

(%)

≤5 ( 120°C, 10min)

( 120°C , 10 min )

介电强度

Break-dowm voltage

V/µm

≥350 ( 23°C, DC )

镀层方块电阻

Coating square resistance

Ω/□

铝膜 Al

1.5±0.5

2.0±0.5

2.5±0.5

3±1

锌铝膜

Zn/Al

加厚区方阻 (heavy-edge area)

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