Glass yarns capable of reinforcing organic and/or inorganic...

Details Glass yarns capable of reinforcing organic and/or inorganic... Glass yarns capable of reinforcing organic and/or inorganic...

Category

C - Chemistry, Metallurgy

Subcategory

03

Subsubcategory

C

IPC codes

C03C 13/00 (2006.01)

Type

Patent

Patent number

CA 2673473

Description

The invention relates to a glass yarn having a chemical composition which is essentially free of boron oxide and includes the following constituents within the limits defined below and expressed in percentage by weight, namely: 55 to 65 SiO2, 9 to 16 Al2O3, 15 to 26 CaO, 1 to 5 MgO, 0.5 to 5 BaO+SrO, 0 to 2 Na2O + K2O + Li2O, 0 to 1 TiO2, 0 to 2 ZnO, and 0 to 2 ZrO2. The invention also relates to composites containing said yarns.

L'invention se rapporte à un fil de verre dont la composition chimique est sensiblement exempte d'oxyde de bore et comprend les constituants suivants, dans les limites définies ci-après exprimées en pourcentages pondéraux: SiO2 55 à 65, Al2O3 9 à 16, CaO 15 à 26, MgO 1 à 5, BaO+SrO 0,5 à 5, Na2O + K2O + Li2O 0 à 2, TiO2 0 à 1, ZnO 0 à 2, ZrO2 0 à 2. Elle concerne également les composites comprenant de tels fils.

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