Reinforcing threads and composites resistant to corrosive media

Details Reinforcing threads and composites resistant to corrosive media Reinforcing threads and composites resistant to corrosive media

C - Chemistry, Metallurgy

03

C

C03C 25/40 (2006.01)

Patent

CA 2480556

The invention relates to reinforcing threads coated with a size, comprising at least one silane of formula: Si (R?1¿) (R?2¿) (R?3¿) (R?4¿), where R?1¿, R?2¿ and R?3¿ are selected from the following atoms or groups: -H (except R?3¿), -Cl, -O-R?5¿, -O-R?6¿-O-R?5¿, -O-(C=O)-R?5¿, -O-R?6¿-(C=O)-R?5¿, R?5¿ and R?6¿ are selected from hydrocarbon groups with a 1-4 C principal chain, R?4¿ = -R?7¿-NHR?8¿, R?7¿ is selected from branched hydrocarbon groups with a 2-6 C principal chain, R?8¿ is selected from the following groups: -H, -R?9¿-NH¿2?, -R?10¿-NH-R?9¿-NH¿2?, R?9¿ is selected from 1-12 C hydrocarbon groups or carbonyls and R?10¿ is selected from hydrocarbon groups with a 1-6 C principal chain. According to the invention, the glass threads may be particularly used for reinforcing organic materials, the threads and composites thus obtained being resistant to corrosive media.

La présente invention concerne des fils de renforcement revêtus d'une composition d'ensimage comprenant au moins un silane répondant à la formule: Si (R1) (R2) (R3) (R4) dans laquelle: R1, R2 et R3 sont choisis parmi les atomes ou groupes suivants: -H (excepté pour R3), -Cl, -O-R5, -O-R6-O-R5, -O- (C=O)-R5, -O-R6-(C=O)-R5, R5 et R6 étant choisis parmi les radicaux hydrocarbonés dont la chaîne principale présente de 1 à 4 atomes de carbone, R4 = -R7-NHR8, R7 étant choisi parmi les radicaux hydrocarbonés ramifiés dont la chaîne principale présente de 2 à 6 atomes de carbone, R8 étant choisi parmi les groupes suivants: -H, -R9-NH2, -R10-NH-R9-NH2, R9 étant choisi parmi les radicaux hydrocarbonés de 1 à 12 atomes de carbone ou parmi les carbonyles, et R10 étant choisi parmi les radicaux hydrocarbonés dont la chaîne principale présente de 1 à 6 atomes de carbone. Les fils de verre selon l'invention sont particulièrement aptes à renforcer des matières organiques, les fils et composites obtenus résistant en milieu corrosif.

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