Reacción del γ-aminopropiltrietoxisilano (γ-APS) con partículas de pizarra

Abstract

Reacción del γ γ-aminopropiltrietoxisilano (γ γ-APS) con partículas de pizarra Los agentes de acoplamiento silanos son frecuentemente utilizados para modificar superficies de fibras o partículas utilizadas como refuerzo en composites de matriz orgánica. Para comprobar la formación de enlaces resistentes entre los agentes de acoplamiento y las partículas inorgánicas se han empleado muchos métodos experimentales. En este trabajo se ha utilizado la espectroscopía infrarroja por transformadas de Fourier (FT-IR), el análisis térmico diferencial y termogravimétrico (ATD-TG) y el análisis de la superficie específica como métodos para estudiar la reacción del agente de acoplamiento γ-aminopropiltrietoxisilano (γ-APS) con partículas de pizarra y poder conocer la modificación que ha sufrido la superficie después del tratamiento.Palabras clave: Pizarra, γ-aminopropiltrietoxisilano, Interacción. Study of the reaction of γ γ-aminopropyltriethoxy silane with slate particlesSilane Coupling Agents (SCA) are widely used in fibers or particulates reinforced polymer composites to provide a water resistant bond between these reinforcements and the polymer martix. Many methods have been employed to study the interaction of SCA with inorganic surfaces in order to understand if a covalent bonding at the particulates and silane interface exists. In this work it has been used Fourier Transform infrared (FT-IR) spectroscopy, differential thermal analysis (DTA-TG) and specific surface área analysis in order to study the reaction of γ-aminopropiltrietoxisilane (γ-APS) with slate particulates and to know the surfaces changes occurring after treatment.

The Influence of Slate Waste Activation Conditions on Mineralogical Changes and Pozzolanic Behavior

“…The three works referenced in the literature refer to the recycling of slate wastes in different fields: Rodríguez et al . used slate in organic matrices, Campos et al .…”

“…17 In Spain, the slate quarries of the autonomous region of Castilla and Leon alone are estimated to generate almost three million tons of wastes each year, which presents enormous environmental problems. 18 The three works referenced in the literature refer to the recycling of slate wastes in different fields: Rodr ıguez et al 19 used slate in organic matrices, Campos et al 20 for the manufacturing of sintered structural tiles, and finally, Oti et al 21 described the use of slate waste as a recycled aggregate in concretes.…”