CN104151700A - 一种耐击穿电容器薄膜专用填料及其制备方法 - Google Patents
一种耐击穿电容器薄膜专用填料及其制备方法 Download PDFInfo
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Abstract
一种耐击穿电容器薄膜专用填料,由下列重量份的原料制成:氧化锌3-5、硅灰石5-10、硫酸钡3-5、葡萄糖酸2-3、丙二醇甲醚醋酸酯2-4、硫化烷基酚钙3-4、聚异丁烯丁二酰亚胺2-3、城市污泥60-65、5-7%盐酸适量、水适量、助剂15-20;本发明填料添加了硅灰石、氧化锌,使得薄膜具有良好的绝缘性、介电性能,较高的耐热、耐候性能,同时补强性较好,耐击穿性能好;通过使用城市污泥,降低了成本,细度高,补强性能好;通过使用本发明助剂,能提高填料的分散性、补强性能,能提高薄膜的强度和耐冲击韧性。
Description
技术领域
本发明属于电容器薄膜领域,特别涉及一种耐击穿电容器薄膜专用填料及其制备方法。
背景技术
薄膜电容器由于具有很多优良的特性,因此是一种性能优秀的电容器。它的主要等性如下:无极性,绝缘阻抗很高,频率特性优异(频率响应宽广),而且介质损失很小。基于以上的优点,所以薄膜电容器被大量使用在模拟电路上。尤其是在信号交连的部份,必须使用频率特性良好,介质损失极低的电容器,方能确保信号在传送时,不致有太大的失真情形发生。
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,所以近年来PP电容和PS电容被使用在音响器材的频率与数量也愈来愈高。单纯的聚丙烯(PP)薄膜虽然具有耐热、耐腐蚀,制品可用蒸汽消毒的突出优点,而且密度小,是最轻的通用塑料;但是其存在耐低温冲击性差,较易老化的缺点。聚苯乙烯(PS)薄膜具有极高的透明度,电绝缘性能好,易着色,加工流动性好,刚性好及耐化学腐蚀性好,但是比较脆,冲击强度低,易出现应力开裂,耐热性差及不耐沸水;因此需要对薄膜进行改性。而且随着电容器的应用范围逐渐增多,薄膜的性能也需要改善,比如耐热、耐低温、耐酸碱、耐腐蚀、强度、耐老化、耐紫外线、阻燃、耐磨、韧性、耐冲击等性能需要改善,可以通过添加填料改性来改善性能。
发明内容
本发明的目的在于提供一种耐击穿电容器薄膜专用填料及其制备方法,该填料使得薄膜具有良好的绝缘性、介电性能,较高的耐热、耐候性能,同时补强性较好,耐击穿性能好。
本发明的技术方案如下:
一种耐击穿电容器薄膜专用填料,其特征在于由下列重量份的原料制成:氧化锌3-5、硅灰石5-10、硫酸钡3-5、葡萄糖酸2-3、丙二醇甲醚醋酸酯2-4、硫化烷基酚钙3-4、聚异丁烯丁二酰亚胺2-3、城市污泥60-65、5-7%盐酸适量、水适量、助剂15-20;
所述助剂由下列重量份的原料制成:硫酸锌0.5-0.8、纳米硫酸钡1-1.5、石灰粉2-3、EDTA二钠0.2-0.4、苯并三氮唑0.2-0.3、硅灰5-7、2-3%盐酸溶液10-15、油酸钠0.1-0.2、硅烷偶联剂KH-572 0.1-0.2、丙烯酸乙酯2-3、二甘醇二丁醚1-2、钛酸丁酯0.1-0.2、乙二醇胺0.1-0.2、脂肪酸胺0.5-0.8、过硫酸铵0.1-0.2、水适量;制备方法为:将硅灰与2-3%盐酸溶液混合,加热至50-60℃,搅拌反应20-30分钟,过滤,得滤渣,水洗至pH为6-8,烘干,再与硫酸锌、EDTA二钠、苯并三氮唑、油酸钠、二甘醇二丁醚、钛酸丁酯、乙二醇胺、脂肪酸胺混合,研磨15-20分钟,得硅灰颗粒;再将硅烷偶联剂KH-572 加入适量水中,再加入硅灰颗粒,搅拌均匀后加入丙烯酸乙酯,搅拌均匀后升温至70-80℃,加入过硫酸铵,搅拌反应20-30分钟,再加入石灰粉,继续搅拌反应30-40分钟,烘干,与其他剩余成分混合,分散研磨成2-50μm的颗粒,即得。
所述的耐击穿电容器薄膜专用填料的制备方法,其特征在于包括以下步骤:
(1)将城市污泥送入煅烧炉中,在700-800℃下煅烧2-3个小时,取出粉碎,过100目筛,再加入2-3倍的5-7%盐酸,加热至50-70℃,搅拌10-20分钟,过滤,得滤渣,按上述方法再酸洗一次,再水洗至中性,过滤,得颗粒;
(2)将硅灰石粉碎,过80目筛,与氧化锌、葡萄糖酸、丙二醇甲醚醋酸酯、硫化烷基酚钙、聚异丁烯丁二酰亚胺混合,研磨20-30分钟,得混合物料;
(3)将第(1)步和第(2)步得到的物料与硫酸钡混合,加入适量水搅拌成泥状,研磨成2-50μm的浆料,喷雾干燥,再与其他剩余成分混合均匀,即得。
本发明的有益效果
本发明填料添加了硅灰石、氧化锌,使得薄膜具有良好的绝缘性、介电性能,较高的耐热、耐候性能,同时补强性较好,耐击穿性能好;通过使用城市污泥,降低了成本,细度高,补强性能好;通过使用本发明助剂,能提高填料的分散性、补强性能,能提高薄膜的强度和耐冲击韧性。
具体实施方式
一种耐击穿电容器薄膜专用填料,由下列重量份(公斤)的原料制成:氧化锌4、硅灰石8、硫酸钡4、葡萄糖酸2.5、丙二醇甲醚醋酸酯3、硫化烷基酚钙3.5、聚异丁烯丁二酰亚胺2.5、城市污泥63、6%盐酸适量、水适量、助剂18;
所述助剂由下列重量份(公斤)的原料制成:硫酸锌0.6、纳米硫酸钡1.3、石灰粉2.5、EDTA二钠0.3、苯并三氮唑0.3、硅灰6、2.5%盐酸溶液13、油酸钠0.1、硅烷偶联剂KH-572 0.1、丙烯酸乙酯2.5、二甘醇二丁醚1.5、钛酸丁酯0.1、乙二醇胺0.1、脂肪酸胺0.7、过硫酸铵0.1、水适量;制备方法为:将硅灰与2.5%盐酸溶液混合,加热至55℃,搅拌反应25分钟,过滤,得滤渣,水洗至pH为7,烘干,再与硫酸锌、EDTA二钠、苯并三氮唑、油酸钠、二甘醇二丁醚、钛酸丁酯、乙二醇胺、脂肪酸胺混合,研磨18分钟,得硅灰颗粒;再将硅烷偶联剂KH-572 加入适量水中,再加入硅灰颗粒,搅拌均匀后加入丙烯酸乙酯,搅拌均匀后升温至78℃,加入过硫酸铵,搅拌反应28分钟,再加入石灰粉,继续搅拌反应38分钟,烘干,与其他剩余成分混合,分散研磨成2-50μm的颗粒,即得。
所述的耐击穿电容器薄膜专用填料的制备方法,包括以下步骤:
(1)将城市污泥送入煅烧炉中,在750℃下煅烧2.5个小时,取出粉碎,过100目筛,再加入2.5倍的6%盐酸,加热至60℃,搅拌15分钟,过滤,得滤渣,按上述方法再酸洗一次,再水洗至中性,过滤,得颗粒;
(2)将硅灰石粉碎,过80目筛,与氧化锌、葡萄糖酸、丙二醇甲醚醋酸酯、硫化烷基酚钙、聚异丁烯丁二酰亚胺混合,研磨25分钟,得混合物料;
(3)将第(1)步和第(2)步得到的物料与硫酸钡混合,加入适量水搅拌成泥状,研磨成2-50μm的浆料,喷雾干燥,再与其他剩余成分混合均匀,即得。
实验数据:将本实施例的填料添加到聚丙烯电容器薄膜中,添加量为10-15%,薄膜厚度为2-50μm,薄膜击穿电压值≥ 0.60kV/μm(100℃)。
Claims (2)
1.一种耐击穿电容器薄膜专用填料,其特征在于由下列重量份的原料制成:氧化锌3-5、硅灰石5-10、硫酸钡3-5、葡萄糖酸2-3、丙二醇甲醚醋酸酯2-4、硫化烷基酚钙3-4、聚异丁烯丁二酰亚胺2-3、城市污泥60-65、5-7%盐酸适量、水适量、助剂15-20;
所述助剂由下列重量份的原料制成:硫酸锌0.5-0.8、纳米硫酸钡1-1.5、石灰粉2-3、EDTA二钠0.2-0.4、苯并三氮唑0.2-0.3、硅灰5-7、2-3%盐酸溶液10-15、油酸钠0.1-0.2、硅烷偶联剂KH-572 0.1-0.2、丙烯酸乙酯2-3、二甘醇二丁醚1-2、钛酸丁酯0.1-0.2、乙二醇胺0.1-0.2、脂肪酸胺0.5-0.8、过硫酸铵0.1-0.2、水适量;制备方法为:将硅灰与2-3%盐酸溶液混合,加热至50-60℃,搅拌反应20-30分钟,过滤,得滤渣,水洗至pH为6-8,烘干,再与硫酸锌、EDTA二钠、苯并三氮唑、油酸钠、二甘醇二丁醚、钛酸丁酯、乙二醇胺、脂肪酸胺混合,研磨15-20分钟,得硅灰颗粒;再将硅烷偶联剂KH-572 加入适量水中,再加入硅灰颗粒,搅拌均匀后加入丙烯酸乙酯,搅拌均匀后升温至70-80℃,加入过硫酸铵,搅拌反应20-30分钟,再加入石灰粉,继续搅拌反应30-40分钟,烘干,与其他剩余成分混合,分散研磨成2-50μm的颗粒,即得。
2.根据权利要求1所述的耐击穿电容器薄膜专用填料的制备方法,其特征在于包括以下步骤:
(1)将城市污泥送入煅烧炉中,在700-800℃下煅烧2-3个小时,取出粉碎,过100目筛,再加入2-3倍的5-7%盐酸,加热至50-70℃,搅拌10-20分钟,过滤,得滤渣,按上述方法再酸洗一次,再水洗至中性,过滤,得颗粒;
(2)将硅灰石粉碎,过80目筛,与氧化锌、葡萄糖酸、丙二醇甲醚醋酸酯、硫化烷基酚钙、聚异丁烯丁二酰亚胺混合,研磨20-30分钟,得混合物料;
(3)将第(1)步和第(2)步得到的物料与硫酸钡混合,加入适量水搅拌成泥状,研磨成2-50μm的浆料,喷雾干燥,再与其他剩余成分混合均匀,即得。
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