AbstractThe unmodified and nano-SiO2 modified glass fiber reinforced polymer (GFRP) composites were prepared by the hot-compression molding process to investigate the effects of nano-SiO2 on the mechanical and hygric properties of the GFRP composites. The results indicate that the nano-SiO2 modification results in an increase of 9.7% and 7.9% in the tensile and flexural strength of the GFRP composites, and a decrease of 10.6% in the interlaminar shear strength (ILSS). The maximum swelling of the unmodified GFRP is 2.6 times as that of the nano-SiO2 modified GFRP. The normalized-ILSS decrease of the nano-SiO2 modified GFRP is only 12% after 138 days aging, while that of the GFRP reaches 31%. After 95-days hygric-aging, the decrease of the normalized flexural strength is 15.3% for the GFRP, while the normalized flexural strength of the nano-SiO2 modified GFRP still maintains an increase of 5.0%. It is concluded that the nano-SiO2 particle could improve the mechanical and hygric properties of the GFRP composites.
Science and Engineering of Composite Materials – de Gruyter
Published: Mar 28, 2018
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