CN103834103B - 一种自愈能力改性等规聚丙烯电容器金属化膜及其制备方法 - Google Patents

一种自愈能力改性等规聚丙烯电容器金属化膜及其制备方法 Download PDF

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CN103834103B
CN103834103B CN201410075401.3A CN201410075401A CN103834103B CN 103834103 B CN103834103 B CN 103834103B CN 201410075401 A CN201410075401 A CN 201410075401A CN 103834103 B CN103834103 B CN 103834103B
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汤广顺
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Shantou letter sound Electronic Technology Co., Ltd.
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Abstract

本发明公开了一种自愈能力改性等规聚丙烯电容器金属化膜，其特征在于，由下列重量份的原料制成：等规聚丙烯200、高压聚乙烯30-34、EVA12-14、二甲基硅油4-6、3-巯丙基三甲氧基硅烷2-3、三氟乙基甲基丙烯酸酯2-3、纳米氧化铜1-2、柠檬酸三铵1-2、1.4-丁炔二醇5-8、助剂5-6；本发明通过过滤，去除原料中的杂质，使原料性能好，降低了薄膜的报废率，不易破裂；采用电晕处理，提高了薄膜的耐压强度，防止击穿，自愈能力好，防止因发生击穿导致的壳体破裂，耐压耐高温，使用寿命长。

Description

一种自愈能力改性等规聚丙烯电容器金属化膜及其制备方法
技术领域
本发明涉及电容器制造领域，特别是一种自愈能力改性等规聚丙烯电容器金属化膜及其制备方法。
背景技术
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。国内目前采用纹波电流承受能力相同的薄膜电容代替铝电解电容，所才要能够的金属化薄膜分为加厚区方阻和非加厚区方阻，加厚区方阻较小，为2～4Ω，非加厚区方阻为7.5Ω左右。其优点是加厚区边缘电流密度大，很快就可以自愈。但是，当靠近金属化膜的留边附近有疵点时，由于电流密度较小，无法迅速自愈，电弧产生的热量会引起该点邻近层介质发热，介电强度下降，从而发生击穿，此时该处企图自愈而又无法自愈，这样就会引起邻近多层介质的企图自愈和击穿，因击穿使电流增大，自愈使电流减少，结果电流在较长一段时间不会剧烈增加，而连续自愈和击穿产生的大量气体就会使电容器外壳鼓胀，直到发生外壳爆裂。
发明内容
本发明的目的是提供一种自愈能力改性等规聚丙烯电容器金属化膜及其制备方法。
为了实现本发明的目的，本发明通过以下方案实施：
一种自愈能力改性等规聚丙烯电容器金属化膜，由下列重量份的原料制成：等规聚丙烯200、高压聚乙烯30-34、EVA12-14、二甲基硅油4-6、3-巯丙基三甲氧基硅烷2-3、三氟乙基甲基丙烯酸酯2-3、纳米氧化铜1-2、柠檬酸三铵1-2、1.4-丁炔二醇5-8、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、钙锌稳定剂2-3、氰尿酸锌1-2、2-乙基己基二苯基磷酸酯5-6、椴木灰烬1-2、纳米玉石粉0.3-0.4、亚磷酸酯8-10、聚异丁烯2-3、、玫瑰精油0.1-0.2；制备方法是将茂金属线性低密度聚乙烯加热至熔融状态，然后，加入纳米玉石粉、椴木灰烬、搅拌10-15分钟，最后加入其它成分，搅拌分散均匀，冷却，造粒，即得。
本发明所述自愈能力改性等规聚丙烯电容器金属化膜，由以下具体步骤制成：
（1）将等规聚丙烯、高压聚乙烯、EVA、二甲基硅油加热熔融，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。
本发明的有益效果为：本发明通过过滤，去除原料中的杂质，使原料性能好，降低了薄膜的报废率，不易破裂；采用电晕处理，提高了薄膜的耐压强度，防止击穿，自愈能力好，防止因发生击穿导致的壳体破裂，耐压耐高温，使用寿命长。
具体实施方式
下面通过具体实例对本发明进行详细说明。
一种自愈能力改性等规聚丙烯电容器金属化膜，由下列重量份（公斤）的原料制成：等规聚丙烯200、高压聚乙烯30、EVA12、二甲基硅油4、3-巯丙基三甲氧基硅烷2、三氟乙基甲基丙烯酸酯2、纳米氧化铜1、柠檬酸三铵1、1.4-丁炔二醇5、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、钙锌稳定剂2、氰尿酸锌1、2-乙基己基二苯基磷酸酯5、椴木灰烬2、纳米玉石粉0.3、亚磷酸酯8、聚异丁烯2、玫瑰精油0.1；制备方法是将茂金属线性低密度聚乙烯加热至熔融状态，然后，加入纳米玉石粉、椴木灰烬、搅拌10-15分钟，最后加入其它成分，搅拌分散均匀，冷却，造粒，即得。
本发明所述自愈能力改性等规聚丙烯电容器金属化膜，由以下具体步骤制成：
（1）将等规聚丙烯、高压聚乙烯、EVA、二甲基硅油加热熔融，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≤2.6%
（2）横向拉伸强度≥17Mpa、纵向拉伸强度≥16Mpa；
（3）最小击穿电压600Vv/um。

Claims (1)

1.一种自愈能力改性等规聚丙烯电容器金属化膜，其特征在于，由下列重量份的原料制成：等规聚丙烯200、高压聚乙烯30-34、EVA12-14、二甲基硅油4-6、3-巯丙基三甲氧基硅烷2-3、三氟乙基甲基丙烯酸酯2-3、纳米氧化铜1-2、柠檬酸三铵1-2、1,4-丁炔二醇5-8、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、钙锌稳定剂2-3、氰尿酸锌1-2、2-乙基己基二苯基磷酸酯5-6、椴木灰烬1-2、纳米玉石粉0.3-0.4、亚磷酸酯8-10、聚异丁烯2-3、玫瑰精油0.1-0.2；制备方法是将茂金属线性低密度聚乙烯加热至熔融状态，然后，加入纳米玉石粉、椴木灰烬、搅拌10-15分钟，最后加入其它成分，搅拌分散均匀，冷却，造粒，即得；
所述自愈能力改性等规聚丙烯电容器金属化膜由以下具体步骤制成：
（1）将等规聚丙烯、高压聚乙烯、EVA、二甲基硅油加热熔融，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。
CN201410075401.3A 2014-03-04 2014-03-04 一种自愈能力改性等规聚丙烯电容器金属化膜及其制备方法 Active CN103834103B (zh)

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* Cited by examiner, † Cited by third party
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JP2001146524A (ja) * 1999-09-07 2001-05-29 Sekisui Chem Co Ltd ポリオレフィン系樹脂フィルム
CN101081653A (zh) * 2007-07-16 2007-12-05 刘建林 用于包装液体的高阻隔多层膜及其制造方法
CN101402269A (zh) * 2008-10-22 2009-04-08 北京康得新复合材料股份有限公司 一种双向拉伸增黏预涂膜
JP2013221084A (ja) * 2012-04-17 2013-10-28 Sumitomo Chemical Co Ltd フィルム
CN103524866A (zh) * 2013-09-30 2014-01-22 芜湖航天特种电缆厂 一种高压变电站电缆用绝缘护套料及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001146524A (ja) * 1999-09-07 2001-05-29 Sekisui Chem Co Ltd ポリオレフィン系樹脂フィルム
CN101081653A (zh) * 2007-07-16 2007-12-05 刘建林 用于包装液体的高阻隔多层膜及其制造方法
CN101402269A (zh) * 2008-10-22 2009-04-08 北京康得新复合材料股份有限公司 一种双向拉伸增黏预涂膜
JP2013221084A (ja) * 2012-04-17 2013-10-28 Sumitomo Chemical Co Ltd フィルム
CN103524866A (zh) * 2013-09-30 2014-01-22 芜湖航天特种电缆厂 一种高压变电站电缆用绝缘护套料及其制备方法

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