PTC元件在温度冲击后电阻稳定性研究  

Study on Resistance Stability of PTC Element after Heat Shock

作　　者：黄贺军 潘月秀 方勇 HUANG Hejun;PAN Yuexiu;FANG Yong(Wayon Electronics Co.,L td,Shanghai 201207,China)

机构地区：[1]上海维安电子有限公司,上海201207

出　　处：《仪表技术》2020年第9期13-16,共4页Instrumentation Technology

摘　　要：研究了碳化钛(TiC)填充含量、聚乙烯熔点、TiC粒径和电极箔表面粗糙度对PTC元件在温度冲击后的电阻影响,结果表明:随着TiC含量的增加,PTC元件在温度冲击后电阻升幅先下降然后下降趋势渐缓;采用高熔点PE有助于降低PTC元件在温度冲击后的电阻升幅;选用大粒径的TiC粒子可以有效地减少PTC元件温度冲击后的升幅;电极箔表面粗糙度Ra和Rz增加有助于提高PTC芯材和电极箔的剥离力,降低温度冲击后的电阻升幅。The impact on the resistance of PTC elements after heat shock was studied via filling content of TiC,melting point of PE,particle size of TiC and surface roughness of electrode foil.The results showed that as the content of TiC increases,the increase value of the resistance of PTC elements after heat shock firstly decreased and then slowed down.High melting point of PE was helpful to reduce the increase of the resistance of PTC component after heat shock.TiC with large particle size could effectively reduce the increase of the resistance of PTC element after heat shock.The increase of Ra and Rz on the surface roughness of electrode foil could improve the streel strength of PTC core material and electrode foil,and reduce the increase of the resistance after heat shock.

关 键 词：碳化钛 聚乙烯 温度冲击 粒径 粗糙度 

分 类 号：TB324[一般工业技术—材料科学与工程]