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空耦超声波换能器中酰胺化改性声匹配层的制备与性能检测

韩思奇 康洋 邵欣

韩思奇, 康洋, 邵欣. 空耦超声波换能器中酰胺化改性声匹配层的制备与性能检测[J]. 复合材料学报, 2024, 41(5): 2455-2464. doi: 10.13801/j.cnki.fhclxb.20230914.003
引用本文: 韩思奇, 康洋, 邵欣. 空耦超声波换能器中酰胺化改性声匹配层的制备与性能检测[J]. 复合材料学报, 2024, 41(5): 2455-2464. doi: 10.13801/j.cnki.fhclxb.20230914.003
HAN Siqi, KANG Yang, SHAO Xin. Preparation and performance testing of amidation modified acoustic matching layer for air coupling ultrasonic transducer[J]. Acta Materiae Compositae Sinica, 2024, 41(5): 2455-2464. doi: 10.13801/j.cnki.fhclxb.20230914.003
Citation: HAN Siqi, KANG Yang, SHAO Xin. Preparation and performance testing of amidation modified acoustic matching layer for air coupling ultrasonic transducer[J]. Acta Materiae Compositae Sinica, 2024, 41(5): 2455-2464. doi: 10.13801/j.cnki.fhclxb.20230914.003

空耦超声波换能器中酰胺化改性声匹配层的制备与性能检测

doi: 10.13801/j.cnki.fhclxb.20230914.003
基金项目: 国家自然科学基金 (62073240); 天津市教委科研计划项目(2020KJ087); 山东省科技型中小企业创新能力提升工程(2022TSGC2331)
详细信息
    通讯作者:

    邵欣,博士,副教授,研究方向为仪器仪表与智能检测 E-mail: shaoxinme@126.com

  • 中图分类号: TB332

Preparation and performance testing of amidation modified acoustic matching layer for air coupling ultrasonic transducer

Funds: National Natural Science Foundation of China (62073240); Science & Technology Development Fund of Tianjin Education Commission for Higher Education (2020KJ087); Shandong Province Science and Technology SMES Innovation Ability Improvement Project (2022TSGC2331)
  • 摘要: 基于空心玻璃微珠(HGM)/环氧树脂体系的声匹配层制备了高灵敏度的空耦超声波换能器。采用聚甲基乙烯基醚-马来酸酐共聚物(PVMMA)接枝到空心玻璃微珠表面(PVMMA-g-HGM),以提高低密度空心玻璃微珠在高密度环氧树脂基体中的分散性。结果表明:改性空心玻璃微珠/环氧树脂复合材料的致密度提升显著且无明显缺陷,具备了更好的声辐射性能,制备的空耦超声波换能器灵敏度达到4.88 V。此外,改进后超声波换能器装配的气体超声波流量计具备更好的流场适应性,相对误差绝对值低于1.0%。本文提出一种新的工艺以改进气体超声波流量计中超声换能器的性能。

     

  • 图  1  空心玻璃微珠(HGM)接枝改性原理图

    PVMMA—Poly(methyl vinyl ether-alt-maleic anhydride); KH-550—Silane coupling agent

    Figure  1.  Schematic diagram of grafting modification of hollow glass microsphere (HGM)

    图  2  超声波换能器脉冲-回波测试系统

    Figure  2.  Pulse-echo test system for the ultrasonic transducer

    图  3  HGM、NH2-HGM和PVMMA-g-HGM样品的FTIR图谱

    Figure  3.  FTIR spectra of HGM, NH2-HGM and PVMMA-g-HGM

    图  4  HGM、NH2-HGM和PVMMA-g-HGM的XPS图谱:(a) 全扫描谱;(b) O1s峰;(c) N1s峰

    Figure  4.  XPS spectra of HGM, NH2-HGM and PVMMA-g-HGM: (a) Wide XPS spectra; (b) O1s peaks; (c) N1s peaks

    图  5  不同HGM样品的SEM图像:(a) HGM;(b) OH-HGM;(c) NH2-HGM;(d) PVMMA-g-HGM

    Figure  5.  SEM images of different HGM samples: (a) HGM; (b) OH-HGM; (c) NH2-HGM; (d) PVMMA-g-HGM

    图  6  HGM、OH-HGM、NH2-HGM和PVMMA-g-HGM的TGA曲线

    Figure  6.  TGA curves of HGM, OH-HGM, NH2-HGM and PVMMA-g-HGM

    图  7  HGM/环氧树脂(EP)复合材料的表面形貌及SEM剖面图像:((a), (d)) 20wt%HGM/EP;((b), (e)) 20wt%PVMMA-g-HGM/EP;((c), (f)) 25wt%PVMMA-g-HGM/EP

    Figure  7.  Surface topography and cross-sectional SEM images of the fracture surface of HGM/epoxy resin (EP) composites: ((a), (d)) 20wt%HGM/EP; ((b), (e)) 20wt%PVMMA-g-HGM/EP; ((c), (f)) 25wt%PVMMA-g-HGM/EP

    图  8  HGM/EP复合材料的外观形貌:(a)参比HGM/EP;(b) OH-HGM/EP;(c) NH2-HGM/EP;(d) PVMMA-g-HGM/EP

    Figure  8.  Optical photos of HGM/EP composites: (a) Pristine HGM/EP; (b) OH-HGM/EP; (c) NH2-HGM/EP; (d) PVMMA-g-HGM/EP

    图  9  不同PVMMA-g-HGM质量分数下复合材料的密度ρ及声阻抗Z

    Figure  9.  Density ρ and acoustic impedance Z of composites for different mass fraction of the PVMMA-g-HGM

    图  10  HGM/EP复合材料的水接触角测试:(a) 20wt%HGM/EP;(b) 20wt%PVMMA-g-HGM/EP

    Figure  10.  Contact angle results of HGM/EP composites: (a) 20wt%HGM/EP; (b) 20wt%PVMMA-g-HGM/EP

    图  11  超声波换能器的装配实物图((a), (b))及结构示意图(c)

    Figure  11.  Assembled ultrasonic transducer ((a), (b)) and the structural diagram (c) of the ultrasonic transducer

    图  12  不同HGM/EP复合材料下超声波换能器的时域信号测试结果:(a) 20wt%HGM/EP;(b) 15wt%PVMMA-g-HGM/EP;(c) 20wt%PVMMA-g-HGM/EP;(d) 25wt%PVMMA-g-HGM/EP

    Figure  12.  Time-domain signal of ultrasonic transducers according to the different HGM/EP composites: (a) 20wt%HGM/EP;(b) 15wt%PVMMA-g-HGM/EP; (c) 20wt%PVMMA-g-HGM/EP; (d) 25wt%PVMMA-g-HGM/EP

    图  13  ((a), (b))超声波换能器装配过程;(c)气体超声波流量计标定实验平台

    Figure  13.  ((a), (b)) Ultrasonic transducer assembly process; (c) Gas ultrasonic flowmeter test platform

    图  14  不同HGM/EP复合材料下气体超声波流量计的误差分布

    Figure  14.  Error distribution of ultrasonic flowmeters according to the different HGM/EP composites

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出版历程
  • 收稿日期:  2023-07-27
  • 修回日期:  2023-08-21
  • 录用日期:  2023-09-03
  • 网络出版日期:  2023-09-18
  • 刊出日期:  2024-05-01

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