CN108221485A - 一种耐压型电解电容器纸及其制备方法 - Google Patents
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Abstract
本发明涉及一种电解电容器纸及其制备方法。一种耐压型电解电容器纸,该电解电容器纸的原纸浆料由低打浆度剑麻浆和高打浆度剑麻浆组成,低打浆度剑麻浆的打浆度20~60°SR,湿重2~16g,高打浆度剑麻浆的打浆度60~98°SR,湿重2~10g;原纸浆料通过双圆网成型并进行复合,压榨、干燥后在纸页表面涂布涂布液,涂布量为0.2~1.2g/m2,涂布液为纳米纤维素和羧基改性PVA,纳米纤维素和羧基改性PVA的质量比为7:3~1:10。本发明电解电容器纸具有较好的强度、良好的吸水性能、良好的损耗值、优异的耐电压性能,耐电压值增加了80V以上。
Description
技术领域
本发明涉及一种电解电容器纸及其制备方法。
背景技术
电解电容器纸是制备电解电容器的关键材料之一,主要作用是隔离电容器中的阴极和阳极,吸收并保持电解液,也称为隔离纸。
电解电容器纸既属于特种纸范畴,也属于电子元器件,因此,与一般纸张不同,电解电容器纸有如下要求:(1)纯度要高,对影响电解液和电极箔性能的杂质要严格控制;(2)纸质要均匀,厚度和紧度要均一,纤维排列要均匀,同时不能有孔洞和纤维束等纸病;(3)有必要的电气强度和机械强度;(4)对电解液要有良好的浸润性和保持性;(5)在与电解液组成复合体时,要有低的阻抗性。
电解电容器纸要求具有高的耐电压值,耐电压值过低,电容器容易被击穿而损坏。一般情况下,为了提高电解电容器纸的耐电压值,会提高电解电容器纸的紧度和厚度,但这样会使得电解电容器纸的损耗增大,导致元器件耗电量增加,发热量增大,减短了仪器的使用寿命。因此,需要既能提高低紧度电解电容器纸的耐电压值,同时损耗还不会明显增加。针对这一问题,目前还未有较好的解决方法。
发明内容
为解决上述技术问题,本发明的一个目的是提供一种具有相对高的耐电压值的电解电容器纸,本发明的另外一个目的是提供上述电解电容器纸的制备方法。
为了实现上述目的,本发明采用以下技术方案:
一种耐压型电解电容器纸,该电解电容器纸的原纸浆料由低打浆度剑麻浆和高打浆度剑麻浆组成,低打浆度剑麻浆和高打浆度剑麻浆的质量比为20~40:80~60;低打浆度剑麻浆的打浆度20~60°SR,湿重2~16g,高打浆度剑麻浆的打浆度60~98°SR,湿重2~10g;原纸浆料通过双圆网成型并进行复合,压榨、干燥后在纸页表面涂布涂布液,涂布量为0.2~1.2g/m2,涂布液为纳米纤维素和羧基改性PVA,纳米纤维素和羧基改性PVA的质量比为7:3~1:10。
作为优选,所述的麻浆包括剑麻浆、马尼拉麻浆、黄麻浆、汉麻浆、亚麻浆、雁皮浆、菠萝叶浆和檀皮浆中的一种或几种。
作为优选,所述的低打浆度剑麻浆的打浆度40~50°SR,湿重8~11g;高打浆度剑麻浆的打浆度90~98°SR,湿重5~6.5g。
作为优选,所述的涂布液涂布量为0.4~0.8g/m2。
作为优选,所述的纳米纤维素和羧基改性PVA的质量比为2:8~1:9。
为了实现上述第二个目的,本发明采用了以下技术方案:
一种制备所述的耐压型电解电容器纸的制备方法,该方法包括以下的步骤:
1)将麻浆加水后制成2~5%的质量浓度原浆料;
2)将原浆料经过打浆机或磨浆机获得质量浓度2~5%、打浆度20~60°SR、湿重2~16g的浆料A,以及质量浓度2~5%、打浆度60~98°SR、湿重2~10g的浆料B;
3)浆料A及浆料B经双圆网进行复合,复合后经过压榨、干燥、涂布、烘干、压光和卷
取得到原纸C,原纸C经分切后得到电解电容器纸;涂布液的涂布量为0.2~1.2g/m2,涂
布液为纳米纤维素和羧基改性PVA,纳米纤维素和羧基改性PVA的质量比为7:3~1:10。
作为优选,所述的打浆方式包括荷兰式打浆机游离式打浆、单或双盘磨粘状打浆中的一种。所述的涂布方式包括喷雾式涂布、浸渍式涂布、刮刀式涂布、计量棒涂布、气刀式涂布中的一种。
本发明由于采用了上述的技术方案,通过原纸的生产及机内涂布,获得的耐高电压电解电容器纸,且有较好的强度、良好的吸水性能、良好的损耗值、优异的耐电压性能,耐电压值增加了80V以上。
具体实施方式
参照例1
低打浆度剑麻浆:20份
高打浆度剑麻浆:80份
低打浆度剑麻浆的打浆度和湿重分别为40°SR、10g,高打浆度剑麻浆的打浆度和湿重分别为90°SR、5.6g,低打浆度剑麻浆在荷兰式打浆机内通过游离式打浆进行,打浆浓度2.5%。高打浆度剑麻浆通过3台双盘磨磨浆方式进行打浆,打浆浓度3.5%。打浆完成后,通过双圆网成型并进行复合,经烘干、压光、卷取和分切后得到成品,其定量为30g/m2。
参照例2
低打浆度剑麻浆:30份
高打浆度马尼拉麻浆:70份
低打浆度剑麻浆的打浆度和湿重分别为48°SR、8.6g,高打浆度剑麻浆的打浆度和湿重分别为90°SR、5.6g,低打浆度剑麻浆在荷兰式打浆机内通过游离式打浆进行,打浆浓度2.5%。高打浆度剑麻浆通过3台双盘磨磨浆方式进行打浆,打浆浓度3.5%。打浆完成后,通过双圆网成型并进行复合,经烘干、压光、卷取和分切后得到成品,其定量为30g/m2。
实施例1
一种耐高压电解电容器纸,该电解电容器纸的原纸浆料由低打浆度和高打浆度的剑麻浆组成:
低打浆度剑麻浆:20份
高打浆度剑麻浆:80份
低打浆度剑麻浆的打浆度和湿重分别为40°SR、10g,高打浆度剑麻浆的打浆度和湿重分别为90°SR、5.6g,低打浆度剑麻浆在荷兰式打浆机内通过游离式打浆进行,打浆浓度2.5%。高打浆度剑麻浆通过3台双盘磨磨浆方式进行打浆,打浆浓度3.5%。打浆完成后,通过双圆网成型并进行复合,干燥后机内浸涂纳米纤维素及羧基改性PVA,涂布液浓度2%,涂布量0.4g/m2,涂布后经烘干、压光、卷取和分切后得到成品,其定量为30g/m2。涂布液中,纳米纤维素:羧基改性PVA=1:9。
实施例2
一种耐高压电解电容器纸,该电解电容器纸的原纸浆料由低打浆度和高打浆度的剑麻浆组成:
低打浆度剑麻浆:20份
高打浆度剑麻浆:80份
低打浆度剑麻浆的打浆度和湿重分别为48°SR、9.6g,高打浆度剑麻浆的打浆度和湿重分别为92°SR、5.4g,低打浆度剑麻浆在荷兰式打浆机内通过游离式打浆进行,打浆浓度2.5%。高打浆度剑麻浆通过3台双盘磨磨浆方式进行打浆,打浆浓度3.5%。打浆完成后,通过双圆网成型并进行复合,干燥后机内浸涂纳米纤维素及羧基改性PVA,涂布液浓度2%,涂布量0.4g/m2,涂布后经烘干、压光、卷取和分切后得到成品,其定量为30g/m2。涂布液中,纳米纤维素:羧基改性PVA=2:8。
实施例3
一种耐高压电解电容器纸,该电解电容器纸的原纸浆料由低打浆度和高打浆度的剑麻浆组成:
低打浆度剑麻浆:30份
高打浆度剑麻浆:70份
低打浆度剑麻浆的打浆度和湿重分别为40°SR、9.5g,高打浆度剑麻浆的打浆度和湿重分别为95°SR、5.2g,低打浆度剑麻浆在荷兰式打浆机内通过游离式打浆进行,打浆浓度2.5%。高打浆度剑麻浆通过3台双盘磨磨浆方式进行打浆,打浆浓度3.5%。打浆完成后,通过双圆网成型并进行复合,干燥后机内浸涂纳米纤维素及羧基改性PVA,涂布液浓度2%,涂布量0.4g/m2,涂布后经烘干、压光、卷取和分切后得到成品,其定量为30g/m2。涂布液中,纳米纤维素:羧基改性PVA=2:8。
实施例4
一种耐高压电解电容器纸,该电解电容器纸的原纸浆料由低打浆度剑麻浆和高打浆度马尼拉麻浆组成:
低打浆度剑麻浆:30份
高打浆度马尼拉麻浆:70份
低打浆度剑麻浆的打浆度和湿重分别为40°SR、10g,高打浆度马尼拉麻浆的打浆度和湿重分别为90°SR、6.0g,低打浆度剑麻浆在荷兰式打浆机内通过游离式打浆进行,打浆浓度2.5%。高打浆度马尼拉麻浆通过3台双盘磨磨浆方式进行打浆,打浆浓度3.5%。打浆完成后,通过双圆网成型并进行复合,干燥后机内浸涂纳米纤维素及羧基改性PVA,涂布液浓度2.5%,涂布量0.6g/m2,涂布后经烘干、压光、卷取和分切后得到成品,其定量为30g/m2。涂布液中,纳米纤维素:羧基改性PVA=1:9。
实施例5
一种耐高压电解电容器纸,该电解电容器纸的原纸浆料由低打浆度剑麻浆和高打浆度马尼拉麻浆组成:
低打浆度剑麻浆:30份
高打浆度马尼拉麻浆:70份
低打浆度剑麻浆的打浆度和湿重分别为45°SR、9.6g,高打浆度马尼拉麻浆的打浆度和湿重分别为92°SR、5.8g,低打浆度剑麻浆在荷兰式打浆机内通过游离式打浆进行,打浆浓度2.5%。高打浆度马尼拉麻浆通过3台双盘磨磨浆方式进行打浆,打浆浓度3.5%。打浆完成后,通过双圆网成型并进行复合,干燥后机内浸涂纳米纤维素及羧基改性PVA,涂布液浓度2.5%,涂布量0.6g/m2,涂布后经烘干、压光、卷取和分切后得到成品,其定量为30g/m2。涂布液中,纳米纤维素:羧基改性PVA=2:8。
实施例6
一种耐高压电解电容器纸,该电解电容器纸的原纸浆料由低打浆度剑麻浆和高打浆度马尼拉麻浆组成:
低打浆度剑麻浆:40份
高打浆度马尼拉麻浆:60份
低打浆度剑麻浆的打浆度和湿重分别为48°SR、9.5g,高打浆度马尼拉麻浆的打浆度和湿重分别为95°SR、5.5g,低打浆度剑麻浆在荷兰式打浆机内通过游离式打浆进行,打浆浓度2.5%。高打浆度马尼拉麻浆通过3台双盘磨磨浆方式进行打浆,打浆浓度3.5%。打浆完成后,通过双圆网成型并进行复合,干燥后机内浸涂纳米纤维素及羧基改性PVA,涂布液浓度3%,涂布量0.8g/m2,涂布后经烘干、压光、卷取和分切后得到成品,其定量为30g/m2。涂布液中,纳米纤维素:羧基改性PVA=7:3。
上述各个电解电容器纸的测试数据如下:
Claims (5)
1.一种耐压型电解电容器纸,其特征在于,该电解电容器纸的原纸浆料由低打浆度剑麻浆和高打浆度剑麻浆组成,低打浆度剑麻浆和高打浆度剑麻浆的质量比为20~40:80~60;低打浆度剑麻浆的打浆度20~60°SR,湿重2~16g,高打浆度剑麻浆的打浆度60~98°SR,湿重2~10g;原纸浆料通过双圆网成型并进行复合,压榨、干燥后在纸页表面涂布涂布液,涂布量为0.2~1.2g/m2,涂布液为纳米纤维素和羧基改性PVA,纳米纤维素和羧基改性PVA的质量比为7:3~1:10。
2.根据权利要求1所述的一种耐压型电解电容器纸,其特征在于,麻浆包括剑麻浆、马尼拉麻浆、黄麻浆、汉麻浆、亚麻浆、雁皮浆、菠萝叶浆和檀皮浆中的一种或几种。
3.根据权利要求1所述的一种耐压型电解电容器纸,其特征在于,低打浆度剑麻浆的打浆度40~50°SR,湿重8~11g;高打浆度剑麻浆的打浆度90~98°SR,湿重5~6.5g。
4.根据权利要求1所述的一种耐压型电解电容器纸,其特征在于,涂布液涂布量为0.4~0.8g/m2。
5.根据权利要求1所述的一种耐压型电解电容器纸,其特征在于,纳米纤维素和羧基改性PVA的质量比为2:8~1:9。
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