CN107324800A - 一种陶瓷电容器用介质材料及其制备工艺 - Google Patents
一种陶瓷电容器用介质材料及其制备工艺 Download PDFInfo
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- CN107324800A CN107324800A CN201710537035.2A CN201710537035A CN107324800A CN 107324800 A CN107324800 A CN 107324800A CN 201710537035 A CN201710537035 A CN 201710537035A CN 107324800 A CN107324800 A CN 107324800A
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- 239000003989 dielectric material Substances 0.000 title claims abstract description 34
- 239000003985 ceramic capacitor Substances 0.000 title claims abstract description 33
- 238000005516 engineering process Methods 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910002976 CaZrO3 Inorganic materials 0.000 claims abstract description 14
- 229910002370 SrTiO3 Inorganic materials 0.000 claims abstract description 14
- 229910002113 barium titanate Inorganic materials 0.000 claims abstract description 14
- 229910021523 barium zirconate Inorganic materials 0.000 claims abstract description 14
- 239000004927 clay Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000000498 ball milling Methods 0.000 claims abstract description 11
- 229960000892 attapulgite Drugs 0.000 claims abstract description 9
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 9
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 claims abstract description 8
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 8
- 239000011656 manganese carbonate Substances 0.000 claims abstract description 8
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 23
- 239000013064 chemical raw material Substances 0.000 claims description 20
- 238000003746 solid phase reaction Methods 0.000 claims description 20
- 238000010671 solid-state reaction Methods 0.000 claims description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 239000004332 silver Substances 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 claims description 6
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 5
- 238000003837 high-temperature calcination Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 229910000018 strontium carbonate Inorganic materials 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 229910002367 SrTiO Inorganic materials 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 229910000679 solder Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 4
- 229910052782 aluminium Inorganic materials 0.000 claims 4
- 230000003647 oxidation Effects 0.000 claims 4
- 238000007254 oxidation reaction Methods 0.000 claims 4
- 230000005611 electricity Effects 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract description 4
- 238000005469 granulation Methods 0.000 abstract description 4
- 230000003179 granulation Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 16
- 239000000243 solution Substances 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 5
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本发明公开了一种陶瓷电容器用介质材料及其制备工艺，涉及电子元件与材料技术领域，该介质材料包括以下原料：BaTiO3、SrTiO3、BaZrO3、CaZrO3、ZnB2O4玻璃粉、Nb2O5、CeO2、MnCO3、Gd2O3和凹凸棒粘土。其制备工艺是通过对原料加水球磨混合、烘干、造粒压片及烧结即可。该种陶瓷电容器介质材料及介电常数高，耐电压高，电容温度变化率小，符合Y5U特性的要求，不含铅，对环境无污染，制备简单方便，烧结温度低，能耗少，适宜推广应用。
Description
技术领域
本发明涉及电子元件与材料技术领域，具体涉及一种陶瓷电容器用介质材料及其制备工艺。
背景技术
近几年来，在高端民用产品市场中随着电力系统和脉冲功率的不断升级改造，例如遮断器、负载关闭器、高压电源等的设备对陶瓷电容器提出了高耐电压、低损耗、高可靠性、小型化和大容量等的要求。目前我国加大了对激光武器和电磁武器等的研究，并取得了一定的成果。激光武器需要瞬间提供巨大的能量，这种功能通过电路中的超高压电容倍压来实现，并且超高压电容器是电路中的核心器件。由于国内原材料的限制，我国在军事领域对超高压电容器的需求主要依赖进口，这给我国的国防安全带来了一定的风险。目前所需的超高压陶瓷电容器用介质材料不仅要求耐电压更高，而且还需要较小的介质损耗及较高的体积电阻率，以满足超高压电容器高可靠性。目前有些陶瓷电容器的电介质中含有铅和镉，在陶瓷电容器的生产、使用和废弃过程中对人体和环境的危害较大，其介电常数小，耐电压较低，使用效果及性能不理想，满足不了人们对其需求。
发明内容
针对现有技术中存在的问题，本发明提供了一种陶瓷电容器用介质材料及其制备工艺，该种陶瓷电容器介质材料及介电常数高，耐电压高，电容温度变化率小，符合Y5U特性的要求，不含铅，对环境无污染，制备简单方便，烧结温度低，能耗少，适宜推广应用。
为了达到上述目的，本发明通过以下技术方案来实现的：
一种陶瓷电容器用介质材料，包括以下按重量份计的原料：BaTiO325-35份、SrTiO320-30份、BaZrO310-20份、CaZrO38-12份、ZnB2O4玻璃粉5-15份、Nb2O54-8份、CeO23-7份、MnCO33-5份、Gd2O33-5份和凹凸棒粘土15-25份。
进一步地，所述介质材料包括以下按重量份计的原料：BaTiO330份、SrTiO325份、BaZrO315份、CaZrO310份、ZnB2O4玻璃粉10份、Nb2O56份、CeO25份、MnCO34份、Gd2O34份和凹凸棒粘土20份。
进一步地，所述BaTiO3是采用如下工艺制备：将常规的化学原料BaCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1120-1210℃保温60-80min，固相反应合成BaTiO3，冷却后研磨过150-250目筛，备用。
进一步地，所述SrTiO3是采用如下工艺制备：将常规的化学原料SrCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1020-1140℃保温80-100min，固相反应合成SrTiO3，冷却后研磨过150-250目筛，备用。
进一步地，所述CaZrO3是采用如下工艺制备：将常规的化学原料CaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1140-1220℃保温70-90min，固相反应合成CaZrO3，冷却后研磨过150-250目筛，备用。
进一步地，所述BaZrO3是采用如下工艺制备：将常规的化学原料BaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1080-1160℃保温60-80min，固相反应合成BaZrO3，冷却后研磨过150-250目筛，备用。
上述的一种陶瓷电容器用介质材料的制备工艺，按照以下步骤进行：
(1)按所述重量份配比称取原料，将所述凹凸棒粘土置于8％-12％的盐酸溶液中浸泡40-60min，抽滤后将所得物料烘干，再在250-350℃下进行高温煅烧1-2h，取出冷却后通过研磨机研磨成120-160目的细粉，备用；
(2)将所有原料输送至行星球磨机中加入去离子水球磨混合，且料:球:水＝1:3:(0.6-0.9)(质量比)，球磨2-4h后，烘干得干粉料；
(3)向干粉料中加入粘合剂进行造粒，混研后过40-60目筛，再在20-30Mpa压力下进行干压成生坯片；
(4)将制得的生坯片在稀有气体环境下烧结2-4h，待冷却至780-860℃时保温1-2h，随后随炉冷却，再在480-520℃下保温15-25min进行烧银，形成银电极，再焊引线，进行包封，即可。
进一步地，在步骤(3)中，所述粘合剂采用重量百分比浓度为15-25％的聚乙烯醇水溶液,该聚乙烯醇水溶液的重量为干粉料重量的8-12％。
进一步地，在步骤(4)中，所述稀有气体为氮气或者氩气，烧结温度为980-1060℃。
本发明具有如下的有益效果：
(1)本发明的电容器介质材料制备简单方便，相比现有技术中的工艺流程，其烧结温度低，能耗少，原料中不含铅和镉等有害元素，对环境无污染，对人体无危害，符合国家倡导的绿色环保的标准；
(2)本发明的电容器介质材料的介电常数高，可达20000以上；耐电压程度高，直流耐电压可达20kV/mm以上，交流耐压可达15kV/mm以上；因本发明的电容器介质介电常数高，能实现陶瓷电容器的小型化和大容量,同样能降低成本；
(3)本发明的电容器介质的电容温度变化率小，符合Y5U特性的要求；另外因其介质损耗小于0.3％，在使用过程中性能稳定性好，安全性高，适宜推广应用。
具体实施方式
下面结合实施例对本发明的具体实施方式作进一步描述，以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
实施例1
一种陶瓷电容器用介质材料，称取以下原料待用：BaTiO325kg、SrTiO320kg、BaZrO310kg、CaZrO38kg、ZnB2O4玻璃粉5kg、Nb2O54kg、CeO23kg、MnCO33kg、Gd2O33kg和凹凸棒粘土15kg。
其中，上述的BaTiO3是采用如下工艺制备：将常规的化学原料BaCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1120℃保温60min，固相反应合成BaTiO3，冷却后研磨过150目筛，备用。
上述的SrTiO3是采用如下工艺制备：将常规的化学原料SrCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1020℃保温80min，固相反应合成SrTiO3，冷却后研磨过150目筛，备用。
上述的CaZrO3是采用如下工艺制备：将常规的化学原料CaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1140℃保温70min，固相反应合成CaZrO3，冷却后研磨过150目筛，备用。
上述的BaZrO3是采用如下工艺制备：将常规的化学原料BaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1080℃保温60min，固相反应合成BaZrO3，冷却后研磨过150目筛，备用。
上述的一种陶瓷电容器用介质材料的制备工艺，按照以下步骤进行：
(1)先将称取的凹凸棒粘土置于8％的盐酸溶液中浸泡40min，抽滤后将所得物料烘干，再在250℃下进行高温煅烧1h，取出冷却后通过研磨机研磨成120目的细粉，备用；
(2)再将所有原料输送至行星球磨机中加入去离子水球磨混合，且料:球:水＝1:3:0.6(质量比)，球磨2h后，烘干得干粉料；
(3)之后向干粉料中加入其重量8％重量百分比浓度为15％的聚乙烯醇水溶液进行造粒，混研后过40目筛，再在20Mpa压力下进行干压成生坯片；
(4)然后将制得的生坯片在充满氮气环境下烧结2h，烧结温度控制在980℃，待冷却至780℃时保温1h，随后随炉冷却，再在480℃下保温15min进行烧银，形成银电极，再焊引线，进行包封，即制得本发明的陶瓷电容器用介质材料。
实施例2
一种陶瓷电容器用介质材料，称取以下原料待用：BaTiO330kg、SrTiO325kg、BaZrO315kg、CaZrO310kg、ZnB2O4玻璃粉10kg、Nb2O56kg、CeO25kg、MnCO34kg、Gd2O34kg和凹凸棒粘土20kg。
其中，上述的BaTiO3是采用如下工艺制备：将常规的化学原料BaCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1160℃保温70min，固相反应合成BaTiO3，冷却后研磨过200目筛，备用。
上述的SrTiO3是采用如下工艺制备：将常规的化学原料SrCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1080℃保温90min，固相反应合成SrTiO3，冷却后研磨过200目筛，备用。
上述的CaZrO3是采用如下工艺制备：将常规的化学原料CaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1180℃保温80min，固相反应合成CaZrO3，冷却后研磨过200目筛，备用。
上述的BaZrO3是采用如下工艺制备：将常规的化学原料BaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1120℃保温70min，固相反应合成BaZrO3，冷却后研磨过200目筛，备用。
上述的一种陶瓷电容器用介质材料的制备工艺，按照以下步骤进行：
(1)先将称取的凹凸棒粘土置于10％的盐酸溶液中浸泡50min，抽滤后将所得物料烘干，再在300℃下进行高温煅烧1.5h，取出冷却后通过研磨机研磨成140目的细粉，备用；
(2)再将所有原料输送至行星球磨机中加入去离子水球磨混合，且料:球:水＝1:3:0.8(质量比)，球磨3h后，烘干得干粉料；
(3)之后向干粉料中加入其重量10％重量百分比浓度为20％的聚乙烯醇水溶液进行造粒，混研后过50目筛，再在25Mpa压力下进行干压成生坯片；
(4)然后将制得的生坯片在充满氩气环境下烧结3h，烧结温度控制在1020℃，待冷却至820℃时保温1.5h，随后随炉冷却，再在500℃下保温20min进行烧银，形成银电极，再焊引线，进行包封，即制得本发明的陶瓷电容器用介质材料。
实施例3
一种陶瓷电容器用介质材料，称取以下原料待用：BaTiO335kg、SrTiO330kg、BaZrO320kg、CaZrO312kg、ZnB2O4玻璃粉15kg、Nb2O58kg、CeO27kg、MnCO35kg、Gd2O35kg和凹凸棒粘土25kg。
其中，上述的BaTiO3是采用如下工艺制备：将常规的化学原料BaCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1210℃保温80min，固相反应合成BaTiO3，冷却后研磨过250目筛，备用。
上述的SrTiO3是采用如下工艺制备：将常规的化学原料SrCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1140℃保温100min，固相反应合成SrTiO3，冷却后研磨过250目筛，备用。
上述的CaZrO3是采用如下工艺制备：将常规的化学原料CaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1220℃保温90min，固相反应合成CaZrO3，冷却后研磨过250目筛，备用。
上述的BaZrO3是采用如下工艺制备：将常规的化学原料BaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1160℃保温80min，固相反应合成BaZrO3，冷却后研磨过250目筛，备用。
上述的一种陶瓷电容器用介质材料的制备工艺，按照以下步骤进行：
(1)先将称取的凹凸棒粘土置于12％的盐酸溶液中浸泡60min，抽滤后将所得物料烘干，再在350℃下进行高温煅烧2h，取出冷却后通过研磨机研磨成160目的细粉，备用；
(2)再将所有原料输送至行星球磨机中加入去离子水球磨混合，且料:球:水＝1:3:0.9(质量比)，球磨4h后，烘干得干粉料；
(3)之后向干粉料中加入其重量12％重量百分比浓度为25％的聚乙烯醇水溶液进行造粒，混研后过60目筛，再在30Mpa压力下进行干压成生坯片；
(4)然后将制得的生坯片在充满氮气环境下烧结4h，烧结温度控制在1060℃，待冷却至860℃时保温2h，随后随炉冷却，再在520℃下保温25min进行烧银，形成银电极，再焊引线，进行包封，即制得本发明的陶瓷电容器用介质材料。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (9)
1.一种陶瓷电容器用介质材料，该陶瓷电容器的电介质耐高压高温，直流耐电压可达20kV/mm以上，交流耐压可达15kV/mm以上；介电常数为20000以上；介质损耗小于0.3％；电容温度变化率小，符合Y5U特性的要求，其特征在于，所述介质材料包括以下按重量份计的原料：BaTiO325-35份、SrTiO320-30份、BaZrO310-20份、CaZrO38-12份、ZnB2O4玻璃粉5-15份、Nb2O54-8份、CeO23-7份、MnCO33-5份、Gd2O33-5份和凹凸棒粘土15-25份。
2.根据权利要求1所述的一种陶瓷电容器用介质材料，其特征在于，所述介质材料包括以下按重量份计的原料：BaTiO330份、SrTiO325份、BaZrO315份、CaZrO310份、ZnB2O4玻璃粉10份、Nb2O56份、CeO25份、MnCO34份、Gd2O34份和凹凸棒粘土20份。
3.根据权利要求1所述的一种陶瓷电容器用介质材料，其特征在于，所述BaTiO3是采用如下工艺制备：将常规的化学原料BaCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1120-1210℃保温60-80min，固相反应合成BaTiO3，冷却后研磨过150-250目筛，备用。
4.根据权利要求1所述的一种陶瓷电容器用介质材料，其特征在于，所述SrTiO3是采用如下工艺制备：将常规的化学原料SrCO3和TiO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1020-1140℃保温80-100min，固相反应合成SrTiO3，冷却后研磨过150-250目筛，备用。
5.根据权利要求1所述的一种陶瓷电容器用介质材料，其特征在于，所述CaZrO3是采用如下工艺制备：将常规的化学原料CaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1140-1220℃保温70-90min，固相反应合成CaZrO3，冷却后研磨过150-250目筛，备用。
6.根据权利要求1所述的一种陶瓷电容器用介质材料，其特征在于，所述BaZrO3是采用如下工艺制备：将常规的化学原料BaO和ZrO2按1:1摩尔比配料，研磨混合均匀后放入氧化铝坩埚内于1080-1160℃保温60-80min，固相反应合成BaZrO3，冷却后研磨过150-250目筛，备用。
7.一种根据权利要求1-6任意一项所述的陶瓷电容器用介质材料的制备工艺，其特征在于，包括以下步骤：
(1)按所述重量份配比称取原料，将所述凹凸棒粘土置于8％-12％的盐酸溶液中浸泡40-60min，抽滤后将所得物料烘干，再在250-350℃下进行高温煅烧1-2h，取出冷却后通过研磨机研磨成120-160目的细粉，备用；
(2)将所有原料输送至行星球磨机中加入去离子水球磨混合，且料:球:水＝1:3:(0.6-0.9)(质量比)，球磨2-4h后，烘干得干粉料；
(3)向干粉料中加入粘合剂进行造粒，混研后过40-60目筛，再在20-30Mpa压力下进行干压成生坯片；
(4)将制得的生坯片在稀有气体环境下烧结2-4h，待冷却至780-860℃时保温1-2h，随后随炉冷却，再在480-520℃下保温15-25min进行烧银，形成银电极，再焊引线，进行包封，即可。
8.根据权利要求7所述的一种陶瓷电容器用介质材料的制备工艺，其特征在于，在步骤(3)中，所述粘合剂采用重量百分比浓度为15-25％的聚乙烯醇水溶液,该聚乙烯醇水溶液的重量为干粉料重量的8-12％。
9.根据权利要求7所述的一种陶瓷电容器用介质材料的制备工艺，其特征在于，在步骤(4)中，所述稀有气体为氮气或者氩气，烧结温度为980-1060℃。
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| CN103413688A (zh) * | 2013-08-12 | 2013-11-27 | 山东精工电子科技有限公司 | 一种应用凹凸棒土制备的超级电容器电极及其制作方法 |
| CN104291810A (zh) * | 2014-09-26 | 2015-01-21 | 天津大学 | X9r型多层陶瓷电容器用介质材料的制备方法 |
| CN105645952A (zh) * | 2015-12-30 | 2016-06-08 | 北京七星飞行电子有限公司 | 一种小损耗超高压陶瓷电容器用介质材料 |
| CN106587989A (zh) * | 2016-11-15 | 2017-04-26 | 江苏大学 | 一种高介电性能晶界层陶瓷电容器介质 |
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| CN103413688A (zh) * | 2013-08-12 | 2013-11-27 | 山东精工电子科技有限公司 | 一种应用凹凸棒土制备的超级电容器电极及其制作方法 |
| CN104291810A (zh) * | 2014-09-26 | 2015-01-21 | 天津大学 | X9r型多层陶瓷电容器用介质材料的制备方法 |
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