CN106565214A - 一种高性能高压电容器陶瓷材料及其制备方法 - Google Patents

一种高性能高压电容器陶瓷材料及其制备方法 Download PDF

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CN106565214A
CN106565214A CN201610944236.XA CN201610944236A CN106565214A CN 106565214 A CN106565214 A CN 106565214A CN 201610944236 A CN201610944236 A CN 201610944236A CN 106565214 A CN106565214 A CN 106565214A
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胡忠胜
华玲萍
吴良军
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Anhui Feida Electrical Technology Co Ltd
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Abstract

本发明属于电容器技术领域，具体涉及一种高性能高压电容器陶瓷材料及其制备方法，包括以下重量份的原料：二氧化锰20‑25，黑荆树皮粉3‑4，聚醚环氧丙烷12‑15，堇青石粉12‑15，硅微粉6‑8，二烃基二茂钛3‑7，氧化锇6‑10，锆酸锶5‑8，钨酸钠2‑4，质量分数为16%的四氢呋喃溶液25‑30。本发明中通过将黑荆树皮粉和聚醚环氧丙烷预先合成，可以提高整个体系的介电常数，引入堇青石粉、硅微粉、氧化锇、锆酸锶，使整个体系相互固溶，适当降低烧结温度，从而减少材料结构的缺陷，减少自由电子数量，降低介质损耗，提高介质陶瓷的耐压强度，在使用过程中，温度较为稳定，性能优良。

Description

一种高性能高压电容器陶瓷材料及其制备方法
技术领域
本发明属于电容器技术领域，具体涉及一种高性能高压电容器陶瓷材料及其制备方法。
背景技术
高性能高压高介电容器陶瓷材料是当代高技术领域中的重要新材料之一，它除了通常的高压高介电容器陶瓷材料所具有的高击穿电压和高介电常数外，还具有高稳定、高储能、交流高频和超高压等，在多种电力电容器和电子器件的高压电源和高压线路中得到了广泛应用，因此，如何提高电容器陶瓷材料的性能有非常重要的意义，随着生产技术的发展和应用环境的变化，陶瓷电容器的制备越来越趋向于超小型、环保和高可靠性，同时伴随着降低生产成本的要求，对电容器而言，其主要的性能取决于所采用的介电材料，因此需要进一步的研究，解决现有陶瓷材料均匀性差，容易分层、变形、开裂的问题。
发明内容
本发明的目的是针对现有的问题，提供了一种高性能高压电容器陶瓷材料及其制备方法。
本发明是通过以下技术方案实现的：一种高性能高压电容器陶瓷材料，包括以下重量份的原料：二氧化锰20-25，黑荆树皮粉3-4，聚醚环氧丙烷12-15，堇青石粉12-15，硅微粉6-8，二烃基二茂钛3-7，氧化锇6-10，锆酸锶5-8，钨酸钠2-4，质量分数为16%的四氢呋喃溶液25-30。
作为对上述方案的进一步改进，所述黑荆树皮粉的颗粒粒径为500-800μm，堇青石粉的颗粒粒径为300-400nm。
一种高性能高压电容器陶瓷材料的制备方法，包括以下步骤：
（1）取黑荆树皮粉加入聚醚环氧丙烷中，在反应釜中搅拌溶解，在26-30℃的条件下使其溶解，然后加入二烃基二茂钛和钨酸钠，在45-50℃的条件下反应1.5-2小时，得到混合物料；
（2）取相应重量的二氧化锰、堇青石粉、硅微粉、氧化锇、锆酸锶，混合均匀后引入球磨机中，以球料质量比为6:1，在转速为240转/分钟的条件下，连续球磨25-30分钟，得到混合粉体；
（3）将步骤（2）中所得混合粉体与步骤（1）所得混合物料中，混合均匀后在180-200℃的制粒机中加工得到陶瓷粉体，然后加入四氢呋喃溶液进行喷雾造粒，然后在1250-1400℃下烧结，冷却到室温即得。
作为对上述方案的进一步改进，所述步骤（3）中烧结时间为1-2小时。
本发明相比现有技术具有以下优点：本发明中通过将黑荆树皮粉和聚醚环氧丙烷预先合成，可以提高整个体系的介电常数，引入堇青石粉、硅微粉、氧化锇、锆酸锶，使整个体系相互固溶，适当降低烧结温度，从而减少材料结构的缺陷，减少自由电子数量，降低介质损耗，提高介质陶瓷的耐压强度，在使用过程中，温度较为稳定，性能优良。
具体实施方式
实施例1
一种高性能高压电容器陶瓷材料，包括以下重量份的原料：二氧化锰20，黑荆树皮粉4，聚醚环氧丙烷15，堇青石粉14，硅微粉6，二烃基二茂钛7，氧化锇10，锆酸锶5，钨酸钠2，质量分数为16%的四氢呋喃溶液25。
其中，所述黑荆树皮粉的颗粒粒径为500μm，堇青石粉的颗粒粒径为300nm。
一种高性能高压电容器陶瓷材料的制备方法，包括以下步骤：
（1）取黑荆树皮粉加入聚醚环氧丙烷中，在反应釜中搅拌溶解，在30℃的条件下使其溶解，然后加入二烃基二茂钛和钨酸钠，在50℃的条件下反应2小时，得到混合物料；
（2）取相应重量的二氧化锰、堇青石粉、硅微粉、氧化锇、锆酸锶，混合均匀后引入球磨机中，以球料质量比为6:1，在转速为240转/分钟的条件下，连续球磨25-30分钟，得到混合粉体；
（3）将步骤（2）中所得混合粉体与步骤（1）所得混合物料中，混合均匀后在180-200℃的制粒机中加工得到陶瓷粉体，然后加入四氢呋喃溶液进行喷雾造粒，然后在1250-1400℃下烧结，冷却到室温即得。
其中，所述步骤（3）中烧结时间为1-2小时。
经检验，本发明中制备的高性能高压电容器陶瓷材料，稳定度优于0.02度，β值误差≤±0.3%，零功率电阻值精度误差≤±0.08%，介质损耗小于0.0006,耐压强度大于18KV/mm，温度特性在-40，电容量变化≤8%，在85℃时大于-15%，且呈线性变化。
实施例2
一种高性能高压电容器陶瓷材料，包括以下重量份的原料：二氧化锰24，黑荆树皮粉3，聚醚环氧丙烷12，堇青石粉14，硅微粉7，二烃基二茂钛5，氧化锇8，锆酸锶6，钨酸钠2，质量分数为16%的四氢呋喃溶液28。
其中，所述黑荆树皮粉的颗粒粒径为600μm，堇青石粉的颗粒粒径为350nm。
经检验，本发明中制备的高性能高压电容器陶瓷材料，稳定度优于0.02度，β值误差≤±0.3%，零功率电阻值精度误差≤±0.08%，介质损耗小于0.0006,耐压强度大于18KV/mm，温度特性在-40，电容量变化≤8%，在85℃时大于-15%，且呈线性变化。
实施例3
一种高性能高压电容器陶瓷材料，包括以下重量份的原料：二氧化锰25，黑荆树皮粉3，聚醚环氧丙烷12，堇青石粉15，硅微粉8，二烃基二茂钛3，氧化锇10，锆酸锶8，钨酸钠4，质量分数为16%的四氢呋喃溶液30。
其中，所述黑荆树皮粉的颗粒粒径为800μm，堇青石粉的颗粒粒径为400nm。
经检验，本发明中制备的高性能高压电容器陶瓷材料，稳定度优于0.02度，β值误差≤±0.3%，零功率电阻值精度误差≤±0.08%，介质损耗小于0.0006,耐压强度大于18KV/mm，温度特性在-40，电容量变化≤8%，在85℃时大于-15%，且呈线性变化。

Claims (4)

1.一种高性能高压电容器陶瓷材料，其特征在于，包括以下重量份的原料：二氧化锰20-25，黑荆树皮粉3-4，聚醚环氧丙烷12-15，堇青石粉12-15，硅微粉6-8，二烃基二茂钛3-7，氧化锇6-10，锆酸锶5-8，钨酸钠2-4，质量分数为16%的四氢呋喃溶液25-30。
2.如权利要求1所述一种高性能高压电容器陶瓷材料，其特征在于，所述黑荆树皮粉的颗粒粒径为500-800μm，堇青石粉的颗粒粒径为300-400nm。
3.一种如权利要求2所述高性能高压电容器陶瓷材料的制备方法，其特征在于，包括以下步骤：
（1）取黑荆树皮粉加入聚醚环氧丙烷中，在反应釜中搅拌溶解，在26-30℃的条件下使其溶解，然后加入二烃基二茂钛和钨酸钠，在45-50℃的条件下反应1.5-2小时，得到混合物料；
（2）取相应重量的二氧化锰、堇青石粉、硅微粉、氧化锇、锆酸锶，混合均匀后引入球磨机中，以球料质量比为6:1，在转速为240转/分钟的条件下，连续球磨25-30分钟，得到混合粉体；
（3）将步骤（2）中所得混合粉体与步骤（1）所得混合物料中，混合均匀后在180-200℃的制粒机中加工得到陶瓷粉体，然后加入四氢呋喃溶液进行喷雾造粒，然后在1250-1400℃下烧结，冷却到室温即得。
4.如权利要求2所述一种高性能高压电容器陶瓷材料的制备方法，其特征在于，所述步骤（3）中烧结时间为1-2小时。
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