CN104086859A - 一种阻燃电容器薄膜专用填料及其制备方法 - Google Patents
一种阻燃电容器薄膜专用填料及其制备方法 Download PDFInfo
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Abstract
一种阻燃电容器薄膜专用填料,由下列重量份的原料制成:磷酸三苯酯6-9、环氧油酸丁酯0.3-0.5、氢氧化铝6-8、聚磷酸铵2-3、铁矿渣3-4、烯基丁二酸酯0.4-0.6、邻苯二甲酸二乙二醇二丙烯酸酯0.3-0.5、十八醇0.4-0.6、三聚氰胺2-3、粘土50-55、4-6%盐酸适量、水适量、助剂15-20;本发明填料添加了磷酸三苯酯、聚磷酸铵、氢氧化铝,阻燃性能好,同时该填料颗粒细致、均匀,补强性好,能大大提高聚丙烯薄膜的耐撕裂强度、耐冲击强度;通过使用粘土,降低了成本;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,特别涉及一种阻燃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阻燃电容器薄膜专用填料及其制备方法,该填料阻燃性能好,补强性好,能大大提高聚丙烯薄膜的耐撕裂强度、耐冲击强度。
本发明的技术方案如下:
一种阻燃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:磷酸三苯酯6-9、环氧油酸丁酯0.3-0.5、氢氧化铝6-8、聚磷酸铵2-3、铁矿渣3-4、烯基丁二酸酯0.4-0.6、邻苯二甲酸二乙二醇二丙烯酸酯0.3-0.5、十八醇0.4-0.6、三聚氰胺2-3、粘土50-55、4-6%盐酸适量、水适量、助剂15-20;
所述助剂由下述重量份的原料制成:蒙脱石2-3、2-3% 氢氧化钠溶液12-16、聚异丁烯0.5-0.8、三聚磷酸铝0.7-0.9、双酚A环氧丙烯酸酯1-2、木糖醇0.4-0.7、硅酸铝3-5、脂肪醇聚氧乙烯醚0.1-0.2、硫酸钙晶须7-9、黑碳化硅2-4、妥尔油0.4-0.6、柴胡油0.5-0.8、过硫酸铵0.1-0.2、水适量;制备方法为:蒙脱石与2-3% 氢氧化钠溶液混合,加热至70-80℃,搅拌反应20-30分钟,过滤,得滤渣,水洗至pH为7-8,烘干粉碎成2-50μm的颗粒;再将脂肪醇聚氧乙烯醚、木糖醇加入适量水中,再加入所述蒙脱石颗粒、硅酸铝,搅拌均匀后加入聚异丁烯、双酚A环氧丙烯酸酯、妥尔油、柴胡油,搅拌均匀后升温至80-90℃,加入过硫酸铵,搅拌反应20-30分钟,再加入硫酸钙晶须、黑碳化硅,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。
所述的阻燃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)将粘土送入煅烧炉中,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4-6%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)将铁矿渣粉碎,过100目筛,与磷酸三苯酯、环氧油酸丁酯、聚磷酸铵、烯基丁二酸酯、邻苯二甲酸二乙二醇二丙烯酸酯、十八醇、三聚氰胺混合,研磨20-30分钟,得混合物料;
(3)将第(1)步和第(2)步得到的物料与氢氧化铝混合,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
本发明填料添加了磷酸三苯酯、聚磷酸铵、氢氧化铝,阻燃性能好,同时该填料颗粒细致、均匀,补强性好,能大大提高聚丙烯薄膜的耐撕裂强度、耐冲击强度;通过使用粘土,降低了成本;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
一种阻燃电容器薄膜专用填料,由下列重量份(公斤)的原料制成:磷酸三苯酯8、环氧油酸丁酯0.4、氢氧化铝7、聚磷酸铵2.5、铁矿渣3.5、烯基丁二酸酯0.5、邻苯二甲酸二乙二醇二丙烯酸酯0.4、十八醇0.5、三聚氰胺2.5、粘土53、5%盐酸适量、水适量、助剂17;
所述助剂由下述重量份(公斤)的原料制成:蒙脱石2.5、2.5% 氢氧化钠溶液14、聚异丁烯0.7、三聚磷酸铝0.8、双酚A环氧丙烯酸酯1.5、木糖醇0.5、硅酸铝4、脂肪醇聚氧乙烯醚0.1、硫酸钙晶须8、黑碳化硅3、妥尔油0.5、柴胡油0.7、过硫酸铵0.1、水适量;制备方法为:蒙脱石与2.5% 氢氧化钠溶液混合,加热至75℃,搅拌反应25分钟,过滤,得滤渣,水洗至pH为8,烘干粉碎成2-50μm的颗粒;再将脂肪醇聚氧乙烯醚、木糖醇加入适量水中,再加入所述蒙脱石颗粒、硅酸铝,搅拌均匀后加入聚异丁烯、双酚A环氧丙烯酸酯、妥尔油、柴胡油,搅拌均匀后升温至85℃,加入过硫酸铵,搅拌反应25分钟,再加入硫酸钙晶须、黑碳化硅,继续搅拌反应35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。
所述的阻燃电容器薄膜专用填料的制备方法,包括以下步骤:
(1)将粘土送入煅烧炉中,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5%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)将铁矿渣粉碎,过100目筛,与磷酸三苯酯、环氧油酸丁酯、聚磷酸铵、烯基丁二酸酯、邻苯二甲酸二乙二醇二丙烯酸酯、十八醇、三聚氰胺混合,研磨25分钟,得混合物料;
(3)将第(1)步和第(2)步得到的物料与氢氧化铝混合,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)
1.一种阻燃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:磷酸三苯酯6-9、环氧油酸丁酯0.3-0.5、氢氧化铝6-8、聚磷酸铵2-3、铁矿渣3-4、烯基丁二酸酯0.4-0.6、邻苯二甲酸二乙二醇二丙烯酸酯0.3-0.5、十八醇0.4-0.6、三聚氰胺2-3、粘土50-55、4-6%盐酸适量、水适量、助剂15-20;
所述助剂由下述重量份的原料制成:蒙脱石2-3、2-3% 氢氧化钠溶液12-16、聚异丁烯0.5-0.8、三聚磷酸铝0.7-0.9、双酚A环氧丙烯酸酯1-2、木糖醇0.4-0.7、硅酸铝3-5、脂肪醇聚氧乙烯醚0.1-0.2、硫酸钙晶须7-9、黑碳化硅2-4、妥尔油0.4-0.6、柴胡油0.5-0.8、过硫酸铵0.1-0.2、水适量;制备方法为:蒙脱石与2-3% 氢氧化钠溶液混合,加热至70-80℃,搅拌反应20-30分钟,过滤,得滤渣,水洗至pH为7-8,烘干粉碎成2-50μm的颗粒;再将脂肪醇聚氧乙烯醚、木糖醇加入适量水中,再加入所述蒙脱石颗粒、硅酸铝,搅拌均匀后加入聚异丁烯、双酚A环氧丙烯酸酯、妥尔油、柴胡油,搅拌均匀后升温至80-90℃,加入过硫酸铵,搅拌反应20-30分钟,再加入硫酸钙晶须、黑碳化硅,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所述的阻燃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)将粘土送入煅烧炉中,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4-6%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)将铁矿渣粉碎,过100目筛,与磷酸三苯酯、环氧油酸丁酯、聚磷酸铵、烯基丁二酸酯、邻苯二甲酸二乙二醇二丙烯酸酯、十八醇、三聚氰胺混合,研磨20-30分钟,得混合物料;
(3)将第(1)步和第(2)步得到的物料与氢氧化铝混合,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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