CN103756140A - 一种自愈能力强的电容器金属化薄膜及其制备方法 - Google Patents

一种自愈能力强的电容器金属化薄膜及其制备方法 Download PDF

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CN103756140A
CN103756140A CN201410001726.7A CN201410001726A CN103756140A CN 103756140 A CN103756140 A CN 103756140A CN 201410001726 A CN201410001726 A CN 201410001726A CN 103756140 A CN103756140 A CN 103756140A
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荚朝辉
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Abstract

本发明公开了一种自愈能力强的电容器金属化薄膜，其特征在于，由下列重量份的原料制成：等规聚丙烯200、聚烯烃弹性体12-14、三聚磷酸钠1-2、甲基丙烯酸2-羟乙酯2-3、硅烷偶联剂KH5601-2、磷酸氢二钠1-2、吗啉1-2、松节油4-6、异辛酸钴2-3、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。本发明自愈性好，显著提高了抗电强度和自愈能力，可以降低基膜的厚度，不仅可以缩小电容器的体积，而且防止击穿导致电容器外壳破裂，生产成本低，使用寿命长。

Description

一种自愈能力强的电容器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，特别是一种自愈能力强的电容器金属化薄膜及其制备方法。
背景技术
现有的聚丙烯电容薄膜，收缩率相对偏大、耐温性差，用此膜卷绕而成的电容器随着其工作时间的加长，其内部温升较快，导致电容器的稳定性急剧下降，甚至造成电容器失效，给电器整机或电网带来严重的安全隐患。因此对做为电介质的聚丙烯薄膜的耐温性能提出了更高的要求。
    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强的电容器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：
一种自愈能力强的电容器金属化薄膜，由下列重量份的原料制成：等规聚丙烯200、聚烯烃弹性体12-14、三聚磷酸钠1-2、甲基丙烯酸2-羟乙酯2-3、硅烷偶联剂KH560 1-2、磷酸氢二钠1-2、吗啉1-2、松节油4-6、异辛酸钴2-3、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、乙酰柠檬酸三乙酯14-18、丙酸乙烯酯3-4、椴木灰烬1-2、交联剂TAC1-2、2-乙基己基二苯基磷酸酯5-6、聚乙烯醇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，加入聚乙烯醇、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强的电容器金属化薄膜，由以下具体步骤制成：
（1）将等规聚丙烯、聚烯烃弹性体、三聚磷酸钠、甲基丙烯酸2-羟乙酯、硅烷偶联剂KH560混合加热熔融，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。本发明自愈性好，显著提高了抗电强度和自愈能力，可以降低基膜的厚度，不仅可以缩小电容器的体积，而且防止击穿导致电容器外壳破裂，生产成本低，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。
一种自愈能力强的电容器金属化薄膜，由下列重量份（公斤）的原料制成：等规聚丙烯200、聚烯烃弹性体12、三聚磷酸钠1、甲基丙烯酸2-羟乙酯2、硅烷偶联剂KH560 1、磷酸氢二钠1、吗啉1、松节油4、异辛酸钴2、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、乙酰柠檬酸三乙酯14、丙酸乙烯酯3、椴木灰烬2、交联剂TAC1、2-乙基己基二苯基磷酸酯5、聚乙烯醇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，加入聚乙烯醇、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强的电容器金属化薄膜，由以下具体步骤制成：
（1）将等规聚丙烯、聚烯烃弹性体、三聚磷酸钠、甲基丙烯酸2-羟乙酯、硅烷偶联剂KH560混合加热熔融，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≥ 13Mpa、纵向拉伸强度≥ 16Mpa ；
（3）最小击穿电压 598Vv/um 。

Claims (2)

1.一种自愈能力强的电容器金属化薄膜，其特征在于，由下列重量份的原料制成：等规聚丙烯200、聚烯烃弹性体12-14、三聚磷酸钠1-2、甲基丙烯酸2-羟乙酯2-3、硅烷偶联剂KH560 1-2、磷酸氢二钠1-2、吗啉1-2、松节油4-6、异辛酸钴2-3、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、乙酰柠檬酸三乙酯14-18、丙酸乙烯酯3-4、椴木灰烬1-2、交联剂TAC1-2、2-乙基己基二苯基磷酸酯5-6、聚乙烯醇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，加入聚乙烯醇、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。
2.根据权利要求1所述自愈能力强的电容器金属化薄膜，其特征在于，由以下具体步骤制成：
（1）将等规聚丙烯、聚烯烃弹性体、三聚磷酸钠、甲基丙烯酸2-羟乙酯、硅烷偶联剂KH560混合加热熔融，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。
CN201410001726.7A 2014-01-03 2014-01-03 一种自愈能力强的电容器金属化薄膜及其制备方法 Pending CN103756140A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105869890A (zh) * 2016-05-23 2016-08-17 郑州航空工业管理学院 一种金属化聚丙烯薄膜介质电容器的蒸镀工艺
CN117264418A (zh) * 2023-11-17 2023-12-22 河南华佳新材料技术有限公司 一种柔性直流输变电换流电容用金属化膜及其制备方法

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Publication number Priority date Publication date Assignee Title
US5392190A (en) * 1991-12-18 1995-02-21 Merlin Gerin Manufacturing process of a capacitor with delayed ageing and a capacitor manufactured according to this process
CN102543432A (zh) * 2011-12-28 2012-07-04 宁波大东南万象科技有限公司 可双面金属化的聚丙烯电容薄膜的制备方法
CN103112169A (zh) * 2013-01-28 2013-05-22 宁波绿海电子材料有限公司 一种电磁炉电容器金属化膜的制备方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392190A (en) * 1991-12-18 1995-02-21 Merlin Gerin Manufacturing process of a capacitor with delayed ageing and a capacitor manufactured according to this process
CN102543432A (zh) * 2011-12-28 2012-07-04 宁波大东南万象科技有限公司 可双面金属化的聚丙烯电容薄膜的制备方法
CN103112169A (zh) * 2013-01-28 2013-05-22 宁波绿海电子材料有限公司 一种电磁炉电容器金属化膜的制备方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105869890A (zh) * 2016-05-23 2016-08-17 郑州航空工业管理学院 一种金属化聚丙烯薄膜介质电容器的蒸镀工艺
CN105869890B (zh) * 2016-05-23 2018-01-26 郑州航空工业管理学院 一种金属化聚丙烯薄膜介质电容器的蒸镀工艺
CN117264418A (zh) * 2023-11-17 2023-12-22 河南华佳新材料技术有限公司 一种柔性直流输变电换流电容用金属化膜及其制备方法
CN117264418B (zh) * 2023-11-17 2024-01-26 河南华佳新材料技术有限公司 一种柔性直流输变电换流电容用金属化膜及其制备方法

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