The Impact of Foaming Effect on the Physical and Mechanical Properties of Foam Glasses with Molecular-Level Insights

Foaming effect strongly impacts the physical and mechanical properties of foam glass materials, but an understanding of its mechanism especially at the molecular level is still limited. In this study, the foaming effects of dextrin, a mixture of dextrin and carbon, and different carbon allotropes ar...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-01, Vol.27 (3), p.876
Main Authors: Zhai, Chenxi, Yu, Yang, Zhu, Yumei, Zhang, Jing, Zhong, Ying, Yeo, Jingjie, Wang, Mingchao
Format: Article
Language:English
Subjects:
Allotropy
Black carbon
Carbon
Carbon black
Corrosion resistance
Decomposition
Dextrin
foam glass
Foaming
Foaming agents
foaming effect
Glass
Material properties
Mechanical properties
mechanical property
Molecular dynamics
Molecular structure
Morphology
Physical properties
pore structure
Porous materials
Scanning electron microscopy
Simulation
Sintering
Sodium hydrogen phosphate
Thermal stability
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Summary:Foaming effect strongly impacts the physical and mechanical properties of foam glass materials, but an understanding of its mechanism especially at the molecular level is still limited. In this study, the foaming effects of dextrin, a mixture of dextrin and carbon, and different carbon allotropes are investigated with respect to surface morphology as well as physical and mechanical properties, in which 1 wt.% carbon black is identified as an optimal choice for a well-balanced material property. More importantly, the different foaming effects are elucidated by all-atomistic molecular dynamics simulations with molecular-level insights into the structure-property relationships. The results show that smaller pores and more uniform pore structure benefit the mechanical properties of the foam glass samples. The foam glass samples show excellent chemical and thermal stability with 1 wt.% carbon as the foaming agent. Furthermore, the foaming effects of CaSO and Na HPO are investigated, which both create more uniform pore structures. This work may inspire more systematic approaches to control foaming effect for customized engineering needs by establishing molecular-level structure-property-process relationships, thereby, leading to efficient production of foam glass materials with desired foaming effects.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27030876