CN106316387A - 一种新型ptc陶瓷热敏电阻介质材料及其制备方法 - Google Patents

一种新型ptc陶瓷热敏电阻介质材料及其制备方法 Download PDF

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CN106316387A
CN106316387A CN201610652396.7A CN201610652396A CN106316387A CN 106316387 A CN106316387 A CN 106316387A CN 201610652396 A CN201610652396 A CN 201610652396A CN 106316387 A CN106316387 A CN 106316387A
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dielectric material
critesistor
batio3
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汪洋
陈启志
危国慧
刘萍萍
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ANHUI NINGGUO TIANCHENG ELECTRICAL APPLIANCES Co Ltd
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Abstract

本发明公开了一种新型PTC陶瓷热敏电阻介质材料及其制备方法,由以下重量份数的原料制备而成:BaTiO3:70‑90份、Nd2O3:10‑20份、Co2O3:5‑12份、Bi2O3:1‑9份、MnO2:2‑6份、Cr2O3:2‑8份、SnO2:3‑5份、SiO2:2‑10份、CeO2:2‑10份、ZrO2:2‑8份、TiO2:3‑10份。本发明具有耐压高、残余电流小、功率低、使用安全、可靠性高、寿命长等特点,制备方法具有工艺简单,能耗小,绿色环保等优点,具有实用性和应用前景。

Description

一种新型PTC陶瓷热敏电阻介质材料及其制备方法
技术领域
本发明涉及PTC电阻领域,具体涉及一种新型PTC陶瓷热敏电阻介质材料及其制备方法。
背景技术
为了消除彩管阴罩,防暴环剩磁及地磁等杂散磁场对彩色画面的影响,自动消磁用PTC热敏电阻器已成为彩色电视机、彩色显示器的重要元件之一。PTC热敏电阻器消磁原理:开关闭合的瞬间,由于热敏电阻的初阻很小,起始电流很大,随着热敏电阻器温度升高,电阻值逐渐增大,使回路电流减少,因而在消磁线圈中产生周期性衰减的交变电场,从而磁滞回线也必须按周期减小,从而达到消磁目的。但是,现有的以碳酸钡为基制成的PTC热敏电阻材料,其电阻器的阻值和耐压都难以达到要求,生产合格率不足20%,效率太低。
发明内容
针对现有技术的不足,本发明提供了一种新型PTC陶瓷热敏电阻介质材料及其制备方法,具有高硬度,耐磨损,使用寿命长的优点。
为实现以上目的,本发明通过以下技术方案予以实现:
本发明提供了一种新型PTC陶瓷热敏电阻介质材料,由以下重量份数的原料制备而成:BaTiO3:70-90份、Nd2O3:10-20份、Co2O3:5-12份、Bi2O3:1-9份、MnO2:2-6份、Cr2O3:2-8份、SnO2:3-5份、SiO2:2-10份、CeO2:2-10份、ZrO2:2-8份、TiO2:3-10份;
其制备方法为:
(1)首先按照重量份数称取Nd2O3、Co2O3、Bi2O3、MnO2、Cr2O3、SnO2、SiO2、CeO2、ZrO2、TiO2各组分原料,得到混合物料A,加入到重量为混合物料A 3倍的纯水中,并加入铵盐分散剂,所添加的铵盐分散剂的重量为混合物料A的0.6-0.7%;然后在球磨机中球磨4-6h,得到添加剂料浆;
(2)将主成分原料BaTiO3加入添加剂料浆中,搅拌至混合均匀,然后加入陶瓷粘结剂和聚乙烯醇溶液,混合均匀后得到喷雾料浆;
(3)采用离心式喷雾干燥塔将步骤(2)所得的喷雾料浆喷雾干燥,得到粉料;
(4)将步骤(3)所得的粉料通过干压方式成型,压制成坯体;
(5)将步骤(4)所得的坯体经排胶后,在温度为1100-1300℃的条件下烧结一段时间,获得新型PTC陶瓷热敏电阻介质材料。
优选的,由以下重量份数的原料制备而成:BaTiO3:75-88份、Nd2O3:12-18份、Co2O3:6-11份、Bi2O3:2-8份、MnO2:4-5份、Cr2O3:3-6份、SnO2:3-5份、SiO2:3-9份、CeO2:4-8份、ZrO2:3-5份、TiO2:6-8份。
优选的,由以下重量份数的原料制备而成:BaTiO3:75份、Nd2O3:14份、Co2O3:6份、Bi2O3:3份、MnO2:4份、Cr2O3:3份、SnO2:3份、SiO2:3份、CeO2:4份、ZrO2:4份、TiO2:6份。
优选的,由以下重量份数的原料制备而成:BaTiO3:88份、Nd2O3:12份、Co2O3:10份、Bi2O3:5份、MnO2:4份、Cr2O3:3份、SnO2:3份、SiO2:4份、CeO2:6份、ZrO2:3份、TiO2:6份。
优选的,所述的制备方法步骤(3)中陶瓷粘结剂的量为主成分原料BaTiO3的6%。
优选的,所述的制备方法步骤(3)中烧结时间为3-5h。
本发明有益效果:
本发明的新型PTC陶瓷热敏电阻介质材料非线性系数大于50,烧结后黑片的电位梯度为135-300V/mm,脉冲冲击耐受能力强,可望应用于电力避雷器或其它电力电子线路的防雷过压保护;本发明的新型PTC陶瓷热敏电阻介质材料可在中低温下(1100-1300)烧结,制作工艺简单,大大的降低了氧化锌压敏电阻材料成本,满足了节能环保的要求。其具有耐压高、残余电流小、功率低、使用安全、可靠性高、寿命长等特点。本发明的制备方法具有工艺简单,能耗小,绿色环保等优点,具有实用性和应用前景。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明的实施例,对本发明实施例中的技术方案进行清楚、完整地描述。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1:
本发明提供了一种新型PTC陶瓷热敏电阻介质材料,由以下重量份数的原料制备而成:BaTiO3:70份、Nd2O3:10份、Co2O3:5份、Bi2O3:1份、MnO2:2份、Cr2O3:2份、SnO2:3份、SiO2:2份、CeO2:2份、ZrO2:2份、TiO2:3份;
其制备方法为:
(1)首先按照重量份数称取Nd2O3、Co2O3、Bi2O3、MnO2、Cr2O3、SnO2、SiO2、CeO2、ZrO2、TiO2各组分原料,得到混合物料A,加入到重量为混合物料A 3倍的纯水中,并加入铵盐分散剂,所添加的铵盐分散剂的重量为混合物料A的0.6%;然后在球磨机中球磨4h,得到添加剂料浆;
(2)将主成分原料BaTiO3加入添加剂料浆中,搅拌至混合均匀,然后加入重量为主成分原料BaTiO3的6%陶瓷粘结剂和聚乙烯醇溶液,混合均匀后得到喷雾料浆;
(3)采用离心式喷雾干燥塔将步骤(2)所得的喷雾料浆喷雾干燥,得到粉料;
(4)将步骤(3)所得的粉料通过干压方式成型,压制成坯体;
(5)将步骤(4)所得的坯体经排胶后,在温度为1100℃的条件下烧结3h,获得新型PTC陶瓷热敏电阻介质材料。
实施例2:
本发明提供了一种新型PTC陶瓷热敏电阻介质材料,由以下重量份数的原料制备而成:BaTiO3:90份、Nd2O3:20份、Co2O3:12份、Bi2O3:9份、MnO2:6份、Cr2O3:8份、SnO2:5份、SiO2:10份、CeO2:10份、ZrO2:8份、TiO2:10份;
其制备方法为:
(1)首先按照重量份数称取Nd2O3、Co2O3、Bi2O3、MnO2、Cr2O3、SnO2、SiO2、CeO2、ZrO2、TiO2各组分原料,得到混合物料A,加入到重量为混合物料A 3倍的纯水中,并加入铵盐分散剂,所添加的铵盐分散剂的重量为混合物料A的0.7%;然后在球磨机中球磨6h,得到添加剂料浆;
(2)将主成分原料BaTiO3加入添加剂料浆中,搅拌至混合均匀,然后加入重量为主成分原料BaTiO3的6%陶瓷粘结剂和聚乙烯醇溶液,混合均匀后得到喷雾料浆;
(3)采用离心式喷雾干燥塔将步骤(2)所得的喷雾料浆喷雾干燥,得到粉料;
(4)将步骤(3)所得的粉料通过干压方式成型,压制成坯体;
(5)将步骤(4)所得的坯体经排胶后,在温度为1100℃的条件下烧结5h,获得新型PTC陶瓷热敏电阻介质材料。
实施例3:
本发明提供了一种新型PTC陶瓷热敏电阻介质材料,由以下重量份数的原料制备而成:BaTiO3:75份、Nd2O3:12份、Co2O3:6份、Bi2O3:2份、MnO2:4份、Cr2O3:3份、SnO2:3份、SiO2:3份、CeO2:4份、ZrO2:3份、TiO2:6份;
其制备方法为:
(1)首先按照重量份数称取Nd2O3、Co2O3、Bi2O3、MnO2、Cr2O3、SnO2、SiO2、CeO2、ZrO2、TiO2各组分原料,得到混合物料A,加入到重量为混合物料A 3倍的纯水中,并加入铵盐分散剂,所添加的铵盐分散剂的重量为混合物料A的0.7%;然后在球磨机中球磨6h,得到添加剂料浆;
(2)将主成分原料BaTiO3加入添加剂料浆中,搅拌至混合均匀,然后加入重量为主成分原料BaTiO3的6%陶瓷粘结剂和聚乙烯醇溶液,混合均匀后得到喷雾料浆;
(3)采用离心式喷雾干燥塔将步骤(2)所得的喷雾料浆喷雾干燥,得到粉料;
(4)将步骤(3)所得的粉料通过干压方式成型,压制成坯体;
(5)将步骤(4)所得的坯体经排胶后,在温度为1300℃的条件下烧结5h,获得新型PTC陶瓷热敏电阻介质材料。
实施例4:
本发明提供了一种新型PTC陶瓷热敏电阻介质材料,由以下重量份数的原料制备而成:BaTiO3:88份、Nd2O3:18份、Co2O3:11份、Bi2O3:8份、MnO2:5份、Cr2O3:6份、SnO2:5份、SiO2:9份、CeO2:8份、ZrO2:5份、TiO2:8份;
其制备方法为:
(1)首先按照重量份数称取Nd2O3、Co2O3、Bi2O3、MnO2、Cr2O3、SnO2、SiO2、CeO2、ZrO2、TiO2各组分原料,得到混合物料A,加入到重量为混合物料A 3倍的纯水中,并加入铵盐分散剂,所添加的铵盐分散剂的重量为混合物料A的0.7%;然后在球磨机中球磨4h,得到添加剂料浆;
(2)将主成分原料BaTiO3加入添加剂料浆中,搅拌至混合均匀,然后加入重量为主成分原料BaTiO3的6%陶瓷粘结剂和聚乙烯醇溶液,混合均匀后得到喷雾料浆;
(3)采用离心式喷雾干燥塔将步骤(2)所得的喷雾料浆喷雾干燥,得到粉料;
(4)将步骤(3)所得的粉料通过干压方式成型,压制成坯体;
(5)将步骤(4)所得的坯体经排胶后,在温度为1100℃的条件下烧结5h,获得新型PTC陶瓷热敏电阻介质材料。
实施例5:
本发明提供了一种新型PTC陶瓷热敏电阻介质材料,由以下重量份数的原料制备而成:BaTiO3:75份、Nd2O3:14份、Co2O3:6份、Bi2O3:3份、MnO2:4份、Cr2O3:3份、SnO2:3份、SiO2:3份、CeO2:4份、ZrO2:4份、TiO2:6份;
其制备方法为:
(1)首先按照重量份数称取Nd2O3、Co2O3、Bi2O3、MnO2、Cr2O3、SnO2、SiO2、CeO2、ZrO2、TiO2各组分原料,得到混合物料A,加入到重量为混合物料A 3倍的纯水中,并加入铵盐分散剂,所添加的铵盐分散剂的重量为混合物料A的0.7%;然后在球磨机中球磨6h,得到添加剂料浆;
(2)将主成分原料BaTiO3加入添加剂料浆中,搅拌至混合均匀,然后加入重量为主成分原料BaTiO3的6%陶瓷粘结剂和聚乙烯醇溶液,混合均匀后得到喷雾料浆;
(3)采用离心式喷雾干燥塔将步骤(2)所得的喷雾料浆喷雾干燥,得到粉料;
(4)将步骤(3)所得的粉料通过干压方式成型,压制成坯体;
(5)将步骤(4)所得的坯体经排胶后,在温度为1300℃的条件下烧结3h,获得新型PTC陶瓷热敏电阻介质材料。
实施例6:
本发明提供了一种新型PTC陶瓷热敏电阻介质材料,由以下重量份数的原料制备而成:BaTiO3:88份、Nd2O3:12份、Co2O3:10份、Bi2O3:5份、MnO2:4份、Cr2O3:3份、SnO2:3份、SiO2:4份、CeO2:6份、ZrO2:3份、TiO2:6份;
其制备方法为:
(1)首先按照重量份数称取Nd2O3、Co2O3、Bi2O3、MnO2、Cr2O3、SnO2、SiO2、CeO2、ZrO2、TiO2各组分原料,得到混合物料A,加入到重量为混合物料A 3倍的纯水中,并加入铵盐分散剂,所添加的铵盐分散剂的重量为混合物料A的0.7%;然后在球磨机中球磨4h,得到添加剂料浆;
(2)将主成分原料BaTiO3加入添加剂料浆中,搅拌至混合均匀,然后加入重量为主成分原料BaTiO3的6%陶瓷粘结剂和聚乙烯醇溶液,混合均匀后得到喷雾料浆;
(3)采用离心式喷雾干燥塔将步骤(2)所得的喷雾料浆喷雾干燥,得到粉料;
(4)将步骤(3)所得的粉料通过干压方式成型,压制成坯体;
(5)将步骤(4)所得的坯体经排胶后,在温度为1100℃的条件下烧结3h,获得新型PTC陶瓷热敏电阻介质材料。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解: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;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (6)

1.一种新型PTC陶瓷热敏电阻介质材料,其特征在于,由以下重量份数的原料制备而成:BaTiO3:70-90份、Nd2O3:10-20份、Co2O3:5-12份、Bi2O3:1-9份、MnO2:2-6份、Cr2O3:2-8份、SnO2:3-5份、SiO2:2-10份、CeO2:2-10份、ZrO2:2-8份、TiO2:3-10份;
其制备方法为:
(1)首先按照重量份数称取Nd2O3、Co2O3、Bi2O3、MnO2、Cr2O3、SnO2、SiO2、CeO2、ZrO2、TiO2各组分原料,得到混合物料A,加入到重量为混合物料A3倍的纯水中,并加入铵盐分散剂,所添加的铵盐分散剂的重量为混合物料A的0.6-0.7%;然后在球磨机中球磨4-6h,得到添加剂料浆;
(2)将主成分原料BaTiO3加入添加剂料浆中,搅拌至混合均匀,然后加入陶瓷粘结剂和聚乙烯醇溶液,混合均匀后得到喷雾料浆;
(3)采用离心式喷雾干燥塔将步骤(2)所得的喷雾料浆喷雾干燥,得到粉料;
(4)将步骤(3)所得的粉料通过干压方式成型,压制成坯体;
(5)将步骤(4)所得的坯体经排胶后,在温度为1100-1300℃的条件下烧结一段时间,获得新型PTC陶瓷热敏电阻介质材料。
2.如权利要求1所述的新型PTC陶瓷热敏电阻介质材料,其特征在于,由以下重量份数的原料制备而成:BaTiO3:75-88份、Nd2O3:12-18份、Co2O3:6-11份、Bi2O3:2-8份、MnO2:4-5份、Cr2O3:3-6份、SnO2:3-5份、SiO2:3-9份、CeO2:4-8份、ZrO2:3-5份、TiO2:6-8份。
3.如权利要求2所述的新型PTC陶瓷热敏电阻介质材料,其特征在于,由以下重量份数的原料制备而成:BaTiO3:75份、Nd2O3:14份、Co2O3:6份、Bi2O3:3份、MnO2:4份、Cr2O3:3份、SnO2:3份、SiO2:3份、CeO2:4份、ZrO2:4份、TiO2:6份。
4.如权利要求2所述的新型PTC陶瓷热敏电阻介质材料,其特征在于,由以下重量份数的原料制备而成:BaTiO3:88份、Nd2O3:12份、Co2O3:10份、Bi2O3:5份、MnO2:4份、Cr2O3:3份、SnO2:3份、SiO2:4份、CeO2:6份、ZrO2:3份、TiO2:6份。
5.如权利要求1所述的新型PTC陶瓷热敏电阻介质材料,其特征在于,所述的制备方法步骤(3)中陶瓷粘结剂的重量为主成分原料BaTiO3的6%。
6.如权利要求1所述的新型PTC陶瓷热敏电阻介质材料,其特征在于,所述的制备方法步骤(3)中烧结时间为3-5h。
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