| 摘要 |
Boron-free glass fibers suitable for textile and reinforcements are described. The glass fibers have compositions consisting essentially of SiO2, CaO, Al2O3, and MgO. In a preferred embodiment, the glass contains essentially no fluorine, sulfate, or titania. These glass fiber compositions advantageously have broad or large values for delta T (i.e., the difference between the log (3) or forming temperature --the temperature at which the glass has a viscosity of approximately 1000 poise-- and the liquidus temperature), e.g., a delta T of at least about 125 ~F (52 ~C), more preferably of at least about 150 ~F (66 ~C).
|
