• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >The thermal-electrical properties of polyvinyl alcohol/AgNO_3 films
【24h】

The thermal-electrical properties of polyvinyl alcohol/AgNO_3 films

机译：聚乙烯醇/ AgNO_3薄膜的热电性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this article, one cast technique to fabricate 20-40 wt %AgNO _3-doped polyvinyl alcohol (PVA) composite films of which electrical resistance sharply dropped (4-5 order) in a certain temperature range was reported. The phase, structure thermal, and electrical resistivity properties of films at different heat treatment temperatures were studied by X-ray diffraction (XRD), scanning electrical microscopy (SEM) and differential scanning calorimetry (DSC). The results showed that all the AgNO_3 (20-40 wt %) doped PVA films presented an exothermic peak at 182°C. And the temperature of exothermic peak kept constant for various contents of AgNO _3. Meanwhile, the phase composition of the films was greatly affected by the heat treatment temperature. Ag particles were generated during the heat treatment process, and the content of Ag particles increased with increasing the temperature. The resistivity of PVA/AgNO_3 films decreased with increasing the temperature. And a sharp decrease appeared at 155-165°C due to the generation and contact of a mass of Ag particles at this temperature. The thermal-electrical results suggested the applicability of these materials in temperature sensor, for example, critical temperature resistor thermistor.
机译：在本文中，报道了一种流延技术，以制造在特定温度范围内电阻急剧下降（4-5阶）的20-40 wt％AgNO_3掺杂的聚乙烯醇（PVA）复合膜。通过X射线衍射（XRD），扫描电镜（SEM）和差示扫描量热法（DSC）研究了在不同热处理温度下薄膜的相，结构热和电阻率特性。结果表明，所有掺杂AgNO_3（20-40wt％）的PVA膜在182℃下均出现放热峰。并且，对于AgNO_3的各种含量，放热峰的温度保持恒定。同时，膜的相组成受热处理温度的影响很大。 Ag颗粒在热处理过程中产生，并且Ag颗粒的含量随温度升高而增加。 PVA / AgNO_3薄膜的电阻率随温度升高而降低。并且由于在该温度下大量Ag颗粒的产生和接触，在155-165℃下出现急剧下降。热电结果表明这些材料在温度传感器中的适用性，例如，临界温度电阻器热敏电阻。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号