Synthesis and Compressive Response of Microcellular Foams Fabricated from Thermally Expandable Microspheres

Rui-Zhi Zhang; Ju Chen; Mao-Wei Huang; Jian Zhang; Guo-Qiang Luo; Bao-Zhen Wang; Mei-Juan Li; Qiang Shen; Lian-Meng Zhang

doi:10.1007/s10118-019-2187-2

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Synthesis and Compressive Response of Microcellular Foams Fabricated from Thermally Expandable Microspheres

ARTICLE | Updated：2021-02-18

- Synthesis and Compressive Response of Microcellular Foams Fabricated from Thermally Expandable Microspheres
- Chinese Journal of Polymer Science Vol. 37, Issue 3, Pages: 279-288(2019)
- Affiliations：
  
  a.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
  b.School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China
  c.School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
- Author bio：
  
  luogq@whut.edu.cn
- Funds：
- DOI：10.1007/s10118-019-2187-2
  CLC：
- Received：07 August 2018，
  
  Revised：2018-9-6，
  
  Accepted：07 September 2018，
  
  Online First：10 October 2018，
  
  Published：2019-03
- Accepted：
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Citation: Zhang, R. Z.; Chen, J.; Huang, M. W.; Zhang, J.; Luo, G. Q.; Wang, B. Z.; Li, M. J.; Shen, Q.; Zhang, L. M. Synthesis and compressive response of microcellular foams fabricated from thermally expandable microspheres. Chinese J. Polym. Sci. 2019, 37, 279–288

Rui-Zhi Zhang, Ju Chen, Mao-Wei Huang, et al. Synthesis and Compressive Response of Microcellular Foams Fabricated from Thermally Expandable Microspheres[J]. Chinese Journal of Polymer Science, 2019, 37(3): 279-288.
Citation: Zhang, R. Z.; Chen, J.; Huang, M. W.; Zhang, J.; Luo, G. Q.; Wang, B. Z.; Li, M. J.; Shen, Q.; Zhang, L. M. Synthesis and compressive response of microcellular foams fabricated from thermally expandable microspheres. Chinese J. Polym. Sci. 2019, 37, 279–288 DOI： 10.1007/s10118-019-2187-2.

Rui-Zhi Zhang, Ju Chen, Mao-Wei Huang, et al. Synthesis and Compressive Response of Microcellular Foams Fabricated from Thermally Expandable Microspheres[J]. Chinese Journal of Polymer Science, 2019, 37(3): 279-288. DOI： 10.1007/s10118-019-2187-2.

摘要

Abstract

Cellular foams are widely applied as protective and energy absorption materials in both civil and military fields. A facile and simple one-step heating method to fabricate polymeric foams is measured by adopting thermally expandable microspheres (TEMs). The ideal foaming parameters for various density foams were determined. Moreover

a mechanical testing machine and split Hopkinson bar (SHPB) were utilized to explore the quasi-static and dynamic compressive properties. Results showed that the cell sizes of the as-prepared TEMs foams were in the micrometer range of 11 μm to 20 μm with a uniform cell size distribution. All the foams exhibited good compressive behavior under both quasi-static and high strain rate conditions

and were related to both foam densities and strain rates. The compressive strength of the TEMs foams at 8400 s

−1

was up to 4 times higher than that at 10

−4

−1

. The effects exerted by the strain rate and sample density were evaluated by a power law equation. With increasing density

the strain rate effect was more prominent. At quasi-static strain rates below 3000 s

−1

regime

initial cell wall buckling and subsequent cellular structure flattening were the main failure mechanisms. However

in the high strain rate (HSR) regime (above 5000 s

−1

)

the foams were split into pieces by the following transverse inertia force.

关键词

Keywords

references

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