There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
The influence of fluorine content of the glass in a series of glasses based on: 4.5SiO2-3.0Al2O3-1.5P2O5-(5.0-X)CaO-XCaF2
was investigated on their cement formation with poly(acrylic acid). Increasing the
fluorine content of the glass was found to reduce the glass transition temperature,
as a result of fluorine replacing bridging oxygens by non-bridging fluorines. Working
and setting times of the cement pastes reduced with increasing fluorine content of
the glass. Compressive strength and Young's moduli increased with fluorine content
initially and then remained approximately constant. Fracture toughness, toughness
and un-notched fracture strength were not significantly influenced by fluorine content.
The results are consistent with fluorine simultaneously disrupting the glass network
and reducing the basicity of the glass.