STRENGTHENING FIBERS AND COMPOSITES HAVING IMPROVED FIRE RESISTANCE

摘要

1. The composition, in particular a sizing composition for coating fibers capable of hardening the matrix to obtain a composite, characterized in that it contains at least one additive capable of modifying the matrix / fiber interface to improve the fire resistance of the composite. ! 2. The composition according to claim 1, characterized in that the additive or additives capable of modifying the matrix / fiber interface is selected from:! nitrates, such as potassium nitrate (KNO3) or guanidine nitrate; ! alcohols and their derivatives, such as pentaerythritol and its derivatives, in particular dipentaerythritol, tripentaerythritol, ethoxylated pentaerythritol, propoxylated pentaerythritol, ethoxylated / propoxylated pentaerythritol or sorbitol (or D-glucite); ! derivatives of phosphorus or phosphoric acid, organophosphorus compounds, cyclic ether phosphates or organophosphinate compounds such as ammonium polyphosphate, guanidine phosphate, 1,2,3-dioxaphosphorinan or ammonium pyrophosphate. ! 3. The composition according to claim 1 or 2, characterized in that it does not contain red phosphorus, antimony oxide and halogenated compounds. ! 4. The composition according to claim 1 or 2, characterized in that it contains at least one bonding agent selected, in particular, from silanes, such as aminosilanes or epoxysilanes. ! 5. The composition according to claim 1 or 2, characterized in that it contains at least one adhesive agent selected from polyurethanes, epoxies, acrylic copolymers, polyvinyl acetate and polyolefin emulsions. ! 6. The composition according to claim 1 or 2, characterized in that it contains at least one adhesive agent, such as polyurethane, capable of