HSP 含量对 EVA 发泡材料微观结构和力学性能的影响

doi:10.12066/j.issn.1007-2861.2030

Abstract

Abstract:

A series of ethylene-vinyl acetate (EVA)/hemp stem powder (HSP) foamed materials with different ratios were prepared by following the injection molding process. The morphology of HSP and EVA/HSP foamed materials were observed by scanning electron microscopy (SEM). The melt strength and storage modulus of EVA/HSP blends were tested by Hacker torque rheometer and rotation rheometer. The effects of HSP content on the mechanical properties of EVA/HSP foamed materials were also explored. The results showed that the surface of HSP contained a large number of cracks and grooves, and that with the increase of HSP content, the cell sizes of EVA/HSP foamed materials decreased from 79.64 um to 69.85 um, and the melt strength of EVA/HSP blends increased from 3.7 Nm to 4.5 Nm, the density, hardness, tensile strength and rebound resilience of EVA/HSP foamed materials decreased, and its elongation at break and compression became improved.

Key words: ethylene-vinyl acetate (EVA), hemp stem powder(HSP), foam morphology, mechanical properties

CLC Number:

TQ328

LIU Li, TU Duoxiang. Effects of HSP content on microstructure and mechanical properties of EVA foamed materials[J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(2): 207-215.

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URL: https://www.journal.shu.edu.cn/EN/10.12066/j.issn.1007-2861.2030

https://www.journal.shu.edu.cn/EN/Y2020/V26/I2/207

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Effects of HSP content on microstructure and mechanical properties of EVA foamed materials

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