초록 ▼

The invention relates to Al2O3-containing and high-temperature resistant glass sliver on silica basis having a highly textile, cotton-like and voluminous character. The invention also relates to glass staple fiber products from said glass sliver and their use. The textile character and high-temperat

The invention relates to Al2O3-containing and high-temperature resistant glass sliver on silica basis having a highly textile, cotton-like and voluminous character. The invention also relates to glass staple fiber products from said glass sliver and their use. The textile character and high-temperature resistance are obtained in particular by selective acid extraction. The composition of the inventive glass sliver comprises in particular SiO2 as main component and 1-5% (wt.) Al2O3 as subsidiary component.

대표청구항 ▼

1. An Al2O3-containing, heat stable, silica based glass sliver, obtained by acid extraction of a glass sliver,wherein the glass sliver comprises glass staple fibers having different lengths, wherein each glass staple fiber has a length of 50 to 1000 mm; and wherein the glass sliver before the acid e

1. An Al2O3-containing, heat stable, silica based glass sliver, obtained by acid extraction of a glass sliver,wherein the glass sliver comprises glass staple fibers having different lengths, wherein each glass staple fiber has a length of 50 to 1000 mm; and wherein the glass sliver before the acid extraction comprises the following composition: 70-75% (wt.) SiO2 15-25% (wt.) Na2O and/or K2O 1 to 5% (wt.) Al2O3 and up to a maximum of 5% (wt.) of further components, wherein the glass sliver after the acid extraction is heat stable at temperatures above 400.degree. C.; and wherein the glass sliver after the acid extraction comprises: 95 to 99% (wt.) SiO2 1 to 5% (wt.) Al2O3.