Abstract:

In order to solve the poor adhesion between basalt fiber and sizing solution due to smooth surface, poor strand integrity, chemical inertness and low fiber wettability, low temperature plasma technology was used to modify the surface of basalt filament to improve its sizing strand integrity. The influence of discharge power, discharge pressure and discharge time on the morphology, static and dynamic friction factors and mechanical properties of basalt filament were studied,and the morphological structure of the modified basalt filament was characterized by scanning electron microscopy. Moreover, the relationship between the modified filament and the textile size adhesion performance was investigated. It was found that the low temperature plasma modification can increase the surface roughness, specific surface area and friction coefficient of the basalt filament, which leads to the higher adhesion between basalt filament and textile sizes. In addition, the modified basalt filament have good sizing adhesion and strand integrity under the optimal conditions of discharge power 300 W, pressure 30 Pa and time of 7 min.

Key words: basalt filament, low temperature plasma, abrasion property, friction factor, strand integrity