Fiberglass containing composites with improved retained glass fiber length, impact strength, and tensile properties

A composite comprising:

• from 0.1 to 10 parts by weight of a recycled material per part by weight of a glass composition;
• and
• a binder comprising:
• from 6 to 8 weight percent of an aqueous dispersion of an aliphatic non-reactive polyester polyurethane;
• from 4 to 6 weight percent poly(ethylene-alt-maleic anhydride);
• from 0.1 to 1 weight percent γ-aminopropyltriethoxysilane;
• from 0.1 to 1 weight percent neutralizing acid for aminosilane;
• from 0.1 to 1 weight percent block copolymer of ethylene oxide and propylene oxide;
• from 0.01 to 0.8 weight percent partially amidated polyethylene imine;
• from 0.0001 to 0.01 weight percent defoamer;
• and
• remainder deionized water,
• wherein the glass composition comprises:
• from 60 to 62 weight percent SiO2;
• from 14 to 17 weight percent Al2O3;
• from 14 to 17.5 weight percent CaO;
• from 6 to 8.75 weight percent MgO;
• from 0 to 1 weight percent TiO2;
• and
• from 0.5 to 3 weight percent of other constituents,
• wherein the composite has a Vickers hardness greater than or equal to 4.4 gigapascals (GPa).