Characterization of continuous fiber reinforced chemically bonded ceramic composites

摘要

The effects of continuous fiber volume and wetting agents on the mechanical properties of chemically bonded ceramic composites are evaluated. The ceramic matrix is fabricated by a chemical reaction between MgO and KH_2PO_4 in an aqueous solution at room temperature. Continuous fibers of basalt and E-glass are incorporated in the ceramic matrix. The flexural and tensile strength are studied as a function of different fiber volumes of 10% and 15%. Tensile strength is evaluated is tested at 5% fiber volume. The influence of various surfactants and wetting agents on the overall strength of the composite is investigated. The bond strength of the fiber/ceramic interface is also tested. Additionally scanning electron microscopy is used to characterize the ceramic/fiber interface to further understand the contribution of surfactant and wetting agents on the bonding mechanisms in the system. The practical application and feasibility as a structural load bearing roof panel of this composite material is demonstrated.