CN103772783A - 一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜及其制备方法 - Google Patents

一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜及其制备方法 Download PDF

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CN103772783A
CN103772783A CN201310694139.6A CN201310694139A CN103772783A CN 103772783 A CN103772783 A CN 103772783A CN 201310694139 A CN201310694139 A CN 201310694139A CN 103772783 A CN103772783 A CN 103772783A
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吴贤春
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WUHU WANRUN MACHINERY CO Ltd
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Abstract

本发明公开了一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜，其特征在于，由下列重量份的原料制成：聚乙烯90-100、等规聚丙烯80-90、磷酸三甲苯酯2-3、邻苯二甲酸二辛酯7-9、磷酸钠2-3、单硬脂酸甘油酯4-5、有机膨润土1-2、聚乙烯蜡3-4、苹果酸1-2、助剂5-6；本发明加工工艺简单,并且用其制作的薄膜电容器接触电阻小,从而使得产品特性好，解决一般薄膜电容器电介质的介电常数低，耐热差，成膜性差，机械强度低等问题；制成的电容器的体积较小，还具有较好的高温稳定性，以及优良物理性能和电气性能。

Description

一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜及其制备方法
技术领域
本发明涉及电容器制造领域，特别是一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜及其制备方法。
背景技术
薄膜电容器是以金属箔当电极，将其和聚乙酯，聚丙烯，聚笨乙烯或聚碳酸酯等塑料薄膜，从两端重叠后，卷绕成圆筒状的构造之电容器 ；在所有的塑料薄膜电容当中，聚丙烯(PP)电容和聚苯乙烯(PS)电容的特性最为显著，当然这两种电容器的价格也比较高，电容器的薄膜质量直接影响电容器的使用寿命和产品性能，电容器薄膜的需求量大、种类多，采用单一原料生产的薄膜很难适应市场的要求，但每种原料都有其不足之处，所以生产出来的薄膜很难满足各种情况的需求。
电容器用双向拉伸聚丙烯薄膜具有较高的机械性能和电气性能，与普通型薄膜制得的电容器相比，用聚丙烯薄膜制得的电容器以其热收缩率低、性能稳定、耐高温、耐高压，防止击穿等显著优点，使得聚丙烯薄膜制得的电容器的使用范围越来越广。
发明内容
本发明的目的是提供一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜及其制备方法。
为了实现本发明的目的，本发明通过以下方案实施：
一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜，由下列重量份的原料制成：聚乙烯90-100、等规聚丙烯80-90、磷酸三甲苯酯2-3、邻苯二甲酸二辛酯7-9、磷酸钠2-3、单硬脂酸甘油酯4-5、有机膨润土1-2、聚乙烯蜡3-4、苹果酸1-2、助剂5-6；
所述助剂由下列重量份的原料制成：茂金属线性低密度聚乙烯12-15、桂花精油1-2、硅烷偶联剂KH550 8-10、椴木灰烬1-2；制备方法是将茂金属线性低密度聚乙烯加热至熔融状态，加入其它成分，搅拌分散均匀，冷却，造粒，即得。
本发明所述电容器用改性聚乙烯等规聚丙烯复合金属化薄膜，由以下具体步骤制成：
（1）将聚乙烯、等规聚丙烯、磷酸三甲苯酯、邻苯二甲酸二辛酯加热熔融，再加入助剂以及其余剩余成分充分搅拌，送入挤出机熔融、过滤，然后再通过挤出机挤出片状熔体，过滤>1200目，所述挤出机的温度为220-260℃；
（2）将步骤（1）制成的片状熔体通过激冷辊及风淋室冷却定型后制得铸片，依次进行纵向拉伸、横向拉伸、粗化面电晕处理；
（3）收卷、第一次时效处理、第二次时效处理；
（4）真空蒸发金属化膜，粗化面形成金属化层。
本发明加工工艺简单,并且用其制作的薄膜电容器接触电阻小,从而使得产品特性好，解决一般薄膜电容器电介质的介电常数低，耐热差，成膜性差，机械强度低等问题；制成的电容器的体积较小，还具有较好的高温稳定性，以及优良物理性能和电气性能。
具体实施方式
下面通过具体实例对本发明进行详细说明。
一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜，由下列重量份（公斤）的原料制成：聚乙烯90、等规聚丙烯80、磷酸三甲苯酯2、邻苯二甲酸二辛酯7、磷酸钠2、单硬脂酸甘油酯4、有机膨润土1、聚乙烯蜡3、苹果酸1、助剂5；
所述助剂由下列重量份（公斤）的原料制成：茂金属线性低密度聚乙烯12、桂花精油1、硅烷偶联剂KH550 8、椴木灰烬1；制备方法是将茂金属线性低密度聚乙烯加热至熔融状态，加入其它成分，搅拌分散均匀，冷却，造粒，即得。
本发明所述电容器用改性聚乙烯等规聚丙烯复合金属化薄膜，由以下具体步骤制成：
（1）将聚乙烯、等规聚丙烯、磷酸三甲苯酯、邻苯二甲酸二辛酯加热熔融，再加入助剂以及其余剩余成分充分搅拌，送入挤出机熔融、过滤，然后再通过挤出机挤出片状熔体，过滤>1200目，所述挤出机的温度为220-260℃；
（2）将步骤（1）制成的片状熔体通过激冷辊及风淋室冷却定型后制得铸片，依次进行纵向拉伸、横向拉伸、粗化面电晕处理；
（3）收卷、第一次时效处理、第二次时效处理；
（4）真空蒸发金属化膜，粗化面形成金属化层。
本发明实施例的金属化薄膜的技术指标如下 ：
（1）横向收缩率≤ 0.2%、纵向收缩率≤ 2.5% 
（2）横向拉伸强度≥ 19Mpa、纵向拉伸强度≥ 16Mpa ；
（3）最小击穿电压 600Vv/um 。

Claims (2)

1.一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜，其特征在于，由下列重量份的原料制成：聚乙烯90-100、等规聚丙烯80-90、磷酸三甲苯酯2-3、邻苯二甲酸二辛酯7-9、磷酸钠2-3、单硬脂酸甘油酯4-5、有机膨润土1-2、聚乙烯蜡3-4、苹果酸1-2、助剂5-6；
所述助剂由下列重量份的原料制成：茂金属线性低密度聚乙烯12-15、桂花精油1-2、硅烷偶联剂KH550 8-10、椴木灰烬1-2；制备方法是将茂金属线性低密度聚乙烯加热至熔融状态，加入其它成分，搅拌分散均匀，冷却，造粒，即得。
2.根据权利要求1所述电容器用改性聚乙烯等规聚丙烯复合金属化薄膜，其特征在于，由以下具体步骤制成：
（1）将聚乙烯、等规聚丙烯、磷酸三甲苯酯、邻苯二甲酸二辛酯加热熔融，再加入助剂以及其余剩余成分充分搅拌，送入挤出机熔融、过滤，然后再通过挤出机挤出片状熔体，过滤>1200目，所述挤出机的温度为220-260℃；
（2）将步骤（1）制成的片状熔体通过激冷辊及风淋室冷却定型后制得铸片，依次进行纵向拉伸、横向拉伸、粗化面电晕处理；
（3）收卷、第一次时效处理、第二次时效处理；
（4）真空蒸发金属化膜，粗化面形成金属化层。
CN201310694139.6A 2013-12-18 2013-12-18 一种电容器用改性聚乙烯等规聚丙烯复合金属化薄膜及其制备方法 Pending CN103772783A (zh)

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CN104086877A (zh) * 2014-07-01 2014-10-08 安徽江威精密制造有限公司 一种高韧性电容器薄膜专用填料及其制备方法
CN108752749A (zh) * 2018-06-29 2018-11-06 合肥帧讯低温科技有限公司 一种拉伸强度疏水性相协调的薄膜及其制备方法
CN108795045A (zh) * 2018-07-12 2018-11-13 合肥连森裕腾新材料科技开发有限公司 一种阻燃性好的微电子器件用薄膜

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