Preparation and characterization of continuous fly ash derived glass fibers with improved tensile strength

Qian Ma (1) , Linfeng Ding (2) , Qingwei Wang (1) , Ye Yu (1) , Lida Luo (1) , Hong Li (3)

1 State Key Laboratory for Fiber & Material Modification of Donghua University
2 JGU - Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University
3 PPG Industries

The coal-based energy production in China generates more than 600 million tons of coal fly ash (CFA) each year, which drives us searching for new methods for recycling CFA. In this work, continuous glass fibers with a range of CFA (25 %-45 %) were successfully prepared without showing any sign of fiber crystallization. The measured fiber tensile strength was found to increase with CFA proportionally. The fiber derived from 45 % CFA exhibited the best tensile strength (higher than the E glass fiber prepared/tested under the same conditions) and good chemical stability (98 % mass retention in the acid corrosion test). Our study shows a feasibility of making continuous CFA derived glass fibers with high iron oxide content and an alternative way for CFA recycling. Its improved strength and good chemical durability can benefit both economy and environmental protection.

Mots clés: Continuous glass fiber; fly ash; tensile strength; chemical stability; recycling

Domaines: Matériaux

Qian Ma, Linfeng Ding, Qingwei Wang, Ye Yu, Lida Luo, et al.. Preparation and characterization of continuous fly ash derived glass fibers with improved tensile strength. Materials Letters, 2018, 231, pp.119 - 121. ⟨10.1016/j.matlet.2018.08.032⟩. ⟨hal-01858067⟩