Abstract
The chemical durability and mechanical properties of a kind of alkali-proof basalt fiber BF-CMD-01 and its reinforced F46 epoxy resin matrix composites are presented. The basalt fiber was boiled in distilled water, sodium hydroxide and hydrochloric acid, respectively. Then the mass loss and strength change of the fibers were studied showing that the alkali resistance of the basalt fiber is better than acid resistance. The flexural properties and surface morphologies of the composites were investigated after being immersed in 8 kinds of chemical mediums for 15, 30 and 90 days. Due to the difference of basalt fiber resistance in two kinds of mediums, the composites corrosion behaviors differ greatly in acid and alkaline reactions. In acid mediums, the flexural strength and flexural modulus change in the same way. In alkaline mediums, the flexural modulus keeps close to the original value while the flexural strength declines gradually. Additionally, the mechanical properties of basalt fiber reinforced polymer (BFRP) and S-2 glass fiber reinforced polymer (GFRP) have been tested, and analyzed contrastively. The results show that the interface formed between basalt fiber and epoxy resin is better than that of glass fiber and epoxy resin.
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