Glass composition resistant to chemical media for the manufacture of glass reinforcing yarns
A glass composition, the technology of the composition, applied in the field of organic and inorganic products, can solve problems such as loss of mechanical strength
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[0089] Embodiment 10-15 is comparative example:
[0090] - the glasses of Examples 10, 11 and 13 each contain a high proportion of Na 2 O, K 2 O and Li 2 O: These glasses cannot be fiberized under conventional fiberizing conditions because they have zero or negative (T logη=3 -T liq )value,
[0091] - The glass of Example 12 contains a high proportion of Na 2 O: it can be fibrillated, especially because it contains a suitable content of K 2 O and CaO, but the obtained bundles have low hydrolysis resistance,
[0092] -Examples 14 and 15 respectively correspond to those produced by Saint-Gobain Vétrotex company name and NEG company with marketed under the name Cement Reinforced Glass Beam Composition. The hydrolysis resistance of these bundles is still limited.
[0093] Glass strands according to the invention (Examples 1-9) have excellent hydrolysis resistance compared to glass strands with high Na2O content (Example 12) and commercial strands (Examples 14 and 15). ...
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