Basalt Fibre Thermal and Chemical Resistance Properties
topic
Basalt fibres retain 85 percent of room temperature tensile strength at 400 degrees Celsius and withstand continuous service to 700 degrees Celsius without fibre fusion, with acid resistance coefficient exceeding 85 percent mass retention in 20 percent sulfuric acid immersion and alkali resistance exceeding 94 percent in 20 percent sodium hydroxide solution, significantly outperforming E-glass in both acid and alkali environments.
Role
Qualifies basalt fibre for applications in aggressive chemical and thermal environments where E-glass fails by hydrolytic attack on the borosilicate glass network, including concrete reinforcement in marine and chemically contaminated environments, high-temperature filtration fabrics, fire curtains, and exhaust insulation for automotive and marine engines.
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