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Journal of Reinforced Plastics and Composites
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Chemical Durability and Mechanical Properties of Alkali-proof Basalt Fiber and its Reinforced Epoxy Composites

Wang Mingchao

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China, mingchw{at}mse.buaa.edu.cn

Zhang Zuoguang

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Li Yubin

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Li Min

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Sun Zhijie

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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.

Key Words: composites • basalt fiber • chemical durability • mechanical properties.

This version was published on March 1, 2008

Journal of Reinforced Plastics and Composites, Vol. 27, No. 4, 393-407 (2008)
DOI: 10.1177/0731684407084119
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