作者：Tang M, Huang G, Zhang HH, Liu YL, Chang HJ, Song HZ, Xu DH*, Wang ZG*
关键字：Impact-protective materials,Rheological,
论文来源：期刊
具体来源：ACS Omega, 2017, 2, 1886-1895
发表时间：2017年

In this study, three typical impact-protective materials, D3O,

PORON XRD, and DEFLEXION were chosen to explore the dependences of

rheological and compression mechanical properties on the internal cellular

structures with polymer matrix characteristics, which were examined using

Fourier transform infrared spectroscopy, thermogravimetric analyses, and

scanning electron microscopy with energy dispersive spectroscopy. The

rheological property of these three foaming materials were examined using a

rheometer, and the mechanical property in a compression mode was further

examined using an Instron universal tensile testing machine. The dependences

of rheological parameters, such as dynamic moduli, normalized moduli, and

loss tangent, on angular frequency, and the dependences of mechanical

properties in compression, such as the degree of strain-hardening, hysteresis,

and elastic recovery, on the strain rate for D3O, PORON XRD, and

DEFLEXION can be well-correlated with their internal cellular structural

parameters, revealing, for example, that D3O and PORON XRD exhibit simultaneously high strength and great energy loss in a

high-frequency impact, making them suitable for use as soft, close-fitting materials; however, DEFLEXION dissipates much

energy whether it suffers a large strain rate or not, making it suitable for use as a high-risk impact-protective material. The

rheometry and compression tests used in this study can provide the basic references for selecting and characterizing certain

impact-protective materials for applications.