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低电阻率陶瓷基PTC材料温控特性研究

桑泽康 赵锐 程文龙

桑泽康,赵锐,程文龙. 低电阻率陶瓷基PTC材料温控特性研究[J]. 北京航空航天大学学报,2023,49(8):2147-2153 doi: 10.13700/j.bh.1001-5965.2021.0602
引用本文: 桑泽康,赵锐,程文龙. 低电阻率陶瓷基PTC材料温控特性研究[J]. 北京航空航天大学学报,2023,49(8):2147-2153 doi: 10.13700/j.bh.1001-5965.2021.0602
SANG Z K,ZHAO R,CHENG W L. Study on temperature control characteristics of low-resistivity ceramic-based PTC material[J]. Journal of Beijing University of Aeronautics and Astronautics,2023,49(8):2147-2153 (in Chinese) doi: 10.13700/j.bh.1001-5965.2021.0602
Citation: SANG Z K,ZHAO R,CHENG W L. Study on temperature control characteristics of low-resistivity ceramic-based PTC material[J]. Journal of Beijing University of Aeronautics and Astronautics,2023,49(8):2147-2153 (in Chinese) doi: 10.13700/j.bh.1001-5965.2021.0602

低电阻率陶瓷基PTC材料温控特性研究

doi: 10.13700/j.bh.1001-5965.2021.0602
基金项目: 国家自然科学基金(51876198)
详细信息
    作者简介:

    桑泽康 男,硕士研究生。主要研究方向:常温居里点陶瓷基PTC材料制备及应用。赵 锐 男,博士,副研究员。主要研究方向:主要研究方向:高热流密度散热技术、小型散热系统、航天器控制技术等

    程文龙 男,博士,教授,博士生导师。主要研究方向:高热流密度传热及热控技术、储能材料及储能系统、油井传热及地热系统

    通讯作者:

    E-mail:wlcheng515@163.com

  • 中图分类号: TB34

Study on temperature control characteristics of low-resistivity ceramic-based PTC material

Funds: National Natural Science Foundation of China (51876198)
More Information
  • 摘要:

    常温居里点陶瓷基正温度系数材料在常温段热控领域具有广阔应用前景,但其存在低温区电阻率过大的问题。基于此,以Ba0.64Sr0.36TiO3为基体并采用固相烧结工艺,研制出低温区电阻率为800 Ω·cm的常温居里点PTC材料,分别利用实验和仿真手段对其温控性能进行研究。结果表明:在低温、低电压工况下,该材料可将受控体温度迅速维持在25.6 ℃附近,而其他加热元件控制温度均偏离常温。该材料热控响应时间少于其他加热元件的50%。在−5~5 ℃的周期性变化环境中,该材料控温波动幅度最小,只有2.1 ℃。在真实低温环境下,该材料能将受控体温度快速升至约22.3 ℃,在12 h内温度波动不到2 ℃,有效抑制了外界环境对热控过程的干扰。

     

  • 图 1  烧结流程

    Figure 1.  Sintering flow chart

    图 2  电阻-温度特性测试结果与拟合结果对比

    Figure 2.  Comparison of resistance-temperature characteristic test results and fitting results

    图 3  PTC加热器控温原理

    Figure 3.  Schematic diagram of temperature control

    图 4  实验系统

    Figure 4.  Experimental system

    图 5  −10 ℃、20 V电压下Rcon和R4温控表现对比

    Figure 5.  Comparison of temperature control performance of Rcon and R4 at 20 V and −10 ℃

    图 6  不同工况下的实验值与计算值对比

    Figure 6.  Comparison of experimental and calculated values under different working conditions

    图 7  −10 ℃、20 V电压下R1和R2温控曲线

    Figure 7.  Temperature control curves of R1 and R2 at 20 V and −10 ℃

    图 8  −20 ℃、12 V电压下不同低温电阻、居里点材料温控曲线

    Figure 8.  Temperature control curves of different low-temperature resistor and Curie point materials at −20 ℃ and 12 V voltage

    图 9  温控目标相同时不同材料的温控曲线

    Figure 9.  Temperature control curves of different materials when temperature control target is the same

    图 10  实际低温天气条件下不同材料温控对比

    Figure 10.  Comparison of temperature control of different materials under actual low-temperature weather conditions

    表  1  本文工作与其他相关文献工作比较

    Table  1.   Comparison of work in this paper with other related literature work

    编号样品TC/℃ρLT/(Ω·cm)αT /(%·℃−1方法
    R1BCSTN328.1×104 2.6文献[19]
    R2Ba0.65Sr0.35TiO3182.0×10410.7文献[20]
    R3Ba0.7Sr0.3TiO3302.5×105文献[21]
    R4Ba0.64Sr0.36TiO32080010.5本文
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-10-11
  • 录用日期:  2021-12-24
  • 网络出版日期:  2022-01-18
  • 整期出版日期:  2023-08-31

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