Optimizing Mechanical Performance in Woven Basalt Fibers/Epoxy Composites: Using Silane Coupling Agents to Modify Epoxy Resin for Fiber-Matrix Interface

This study reveals that incorporating silane-coupling agents such as KH560, KH590, KH570, and KH550 into the resin matrix can improve the epoxy mechanical performance as well as the interfacial interaction between basalt fibers and modified epoxy. The increasing silane contents slightly increased th...

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Bibliographic Details
Published in:Journal of inorganic and organometallic polymers and materials 2025-01, Vol.35 (1), p.680-696
Main Authors: Taieh, Nabil Kadhim, Hakeem, Haneen Sameer, Kadhim, Mayameen S., Mejbel, Mohanad Kadhim, Abdullah, Isam Tareq, Al-Attabi, Riyadh, Muhsen, Maryam Firas, Shahatha, Sara H., Tayyeh, Anees Kadhim, Jaddoa, Ali Hussein, Li, Ying, Jiang, Man, Liu, Xi
Format: Article
Language:English
Subjects:
Basalt
Brief Report
Chemistry
Chemistry and Materials Science
Cost effectiveness
Coupling agents
Epoxy resins
Fiber-matrix interfaces
Fibers
Flexural strength
Hydroxyl groups
Inorganic Chemistry
Mechanical properties
Organic Chemistry
Polymer Sciences
Silanes
Silicon
Thermal stability
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Summary:This study reveals that incorporating silane-coupling agents such as KH560, KH590, KH570, and KH550 into the resin matrix can improve the epoxy mechanical performance as well as the interfacial interaction between basalt fibers and modified epoxy. The increasing silane contents slightly increased thermal stability and char yields. The study also found that amino-silane coupling agents, particularly KH550, demonstrated better thermal stability enhancement. Pure epoxy had a Tg of 91.4 °C, while epoxy had modified with 9wt% KH550 exhibited the highest Tg of 98.7 °C. For instance, at 6 wt% concentration of KH560, KH590, KH570, and KH550, the flexural strength of the epoxy matrix increased by 69.4%, 57.6%, 83.4%, and 84.7%, respectively. When the content of KH590, KH570, and KH550 is 9 wt%, the tensile increases by 77.6, 49.0, and 79.6%, respectively. The W-BFs/epoxy composite flexural strength enhanced by 65.3, 81.5, and 74.5%, respectively. The compatibilizing agent would react with the silicon hydroxyl groups on the surface of the basalt fibers, as well as with the epoxide in the resin. This would create a Si-O-Si new bond, which would make the connection between the modified epoxy and the basalt fibers stronger. This process is favored for its cost-effectiveness and user-friendly operation. Graphical Abstract
ISSN:1574-1443
1574-1451
DOI:10.1007/s10904-024-03301-2