Journal
APPLIED SURFACE SCIENCE
Volume 473, Issue -, Pages 55-58Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.12.127
Keywords
Silane-modified MMT; BFRP composites; Seawater absorption; Fracture; Residual strength
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Funding
- National Research Foundation (NRF) - Ministry of Education [2018R1A2B5A02023190, 2017R1A6A3A11028683]
- National Research Foundation of Korea [2017R1A6A3A11028683, 2018R1A2B5A02023190] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, silanized-montmorillonite (Si-MMT) reinforced basalt fiber/epoxy composites were prepared and the effect of silanization of MMT on the fatigue and fracture behavior of the composites in seawater condition were analyzed. To compare the properties of Si-MMT/basalt/epoxy (Si-MMT BFRP), Pure basalt/epoxy (pure BFRP) composites were scrutinized in both dry and seawater conditions. The structural changes after silanetreatment were confirmed using TEM, XRD, and FTIR. Further, tensile strength, cyclic loading (fatigue) and fracture properties were studied through the universal testing machine (UTM) and FE-SEM of the fractured surface. It was found that the properties were improved after silanization of MMT due to the better compatibility and dispersion of MMT layers in the matrix. After seawater absorption, debonding occurred due to swelling of the polymer. Hence, deterioration in the properties was observed. However, the composites with Si-MMT still showed better performance among all.
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