›› 2019, Vol. 4 ›› Issue (6): 27-33.

• 物理学 • 上一篇    下一篇

疏水硅胶颗粒吸能机理的试验研究

  

  1. (阜阳职业技术学院,安徽阜阳 236016)
  • 收稿日期:2018-08-30 出版日期:2019-06-15 发布日期:2019-06-15
  • 作者简介:周迟,助教,主要从事汽车材料研究.
  • 基金资助:
    阜阳职业技术学院专业综合改革试点项目(2016ZYSD01)

ExperimentalInvestigationoftheDampingMechanismofHydrophobicSilicaParticles

  1. (FuyangInstituteofTechnology,Fuyang,Anhui236016,China)
  • Received:2018-08-30 Online:2019-06-15 Published:2019-06-15

摘要: 疏水硅胶是一种由水和布满微孔的疏水硅胶颗粒组成的缓冲介质,将疏水硅胶密封在可压缩的液压缸内即可形成疏 水硅胶缓冲器。在冲击过程中利用水分子侵入和逸出疏水微孔,可以实现能量的存储、转化和消耗。基于Laplace-Washburn 方程和接触角迟滞模型,研究水分子侵入和逸出微孔的过程;采用准静态试验验证力学模型,并根据试验曲线计算疏水硅胶的 耗能效率。结果表明:疏水硅胶在工作过程中呈现较大的迟滞现象环,是一种理想的吸能材料。

关键词: 疏水硅胶, 迟滞, 缓冲

Abstract: Hydrophoicsilicagelisashockenergyabsorptionbuffermediumconsistingofwaterandhydrophobicsilicaparticles covered with micro-pores. It is sealed in a compressible hydraulic cylinder to form a colloidal damping buffer. During impact processes,ittakesadvantagesofwatergettinginandextrudingthehydrophobicporesofsilicaparticlestorealizeenergystorage, conversionanddissipation.BasedonLaplace-Washburnequationandthecontactanglehysteresismodel,theprocessofwatergetting inandextrudinghydrophobicmicro-poreswasstudied.Quasi-statictestswereusedtoverifythismechanicalmodel,andaccordingto experimentalresults,theenergydissipationperformanceisanalyzed.Theresultshowsthatthehydrophobicsilicagelexhibitsalarge hysteresisloopduringtheworkingprocessanditcanbeusedasanidealenergyabsorbingmaterial.

Key words: hydrophobicsilicaparticle, hysteresis, buffer

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