The Curing Behavior of Epoxy Resin/Wormwood Powder Antibacterial Composites Studied by DSC

WANG Shuai, LIANG Jia-yu, QI Rong-rong

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Plastics Science and Technology ›› 2024, Vol. 52 ›› Issue (08) : 28-33. DOI: 10.15925/j.cnki.issn1005-3360.2024.08.006
Theory and Research

The Curing Behavior of Epoxy Resin/Wormwood Powder Antibacterial Composites Studied by DSC

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Abstract

Wormwood powder (WP) was used to perform antibacterial modification on traditional thermosetting plastic epoxy resin (EP) to prepare EP with antibacterial function, so as to solve the problems of shortening life span and hygiene caused by bacterial erosion of EP. The dynamics of curing process of antibacterial EP was studied, so as to understand the influence of WP on its curing behavior. It lays a theoretical foundation for selecting reasonable processing conditions. The curing behavior of EP/WP was studied by DSC. The results showed that the antibacterial rate of the composites increased with the addition of WP. When the addition of WP was 20%, the antibacterial rate of the composites against Escherichia coli and Staphylococcus aureus reached 100%. The curing activation energy E a of pure EP was 74.80 kJ/mol, EP/20%WP was 68.17 kJ/mol, indicating that the addition of WP promoted the curing of EP and reduced its curing activation energy. Through theoretical model analysis, it was found that the curing behavior of EP with WP was consistent with the autocatalytic mechanism.

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Wormwood powder / Epoxy resin / Curing behavior / Non-isothermal and isothermal DSC

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WANG Shuai , LIANG Jia-yu , QI Rong-rong. The Curing Behavior of Epoxy Resin/Wormwood Powder Antibacterial Composites Studied by DSC. Plastics Science and Technology. 2024, 52(08): 28-33 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.08.006

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