Low-smoke fireproof coating material for cables and method for preparing the same

Abstract

The present application belongs to the field of cable fireproofing material, and provides a low-smoke fireproof coating material for cables and a preparation method thereof. The present application uses a urethanized alkyd resin dispersion with a solid content of 30-50wt% as an aqueous film-forming carrier, cooperatively introduces a core-shell flame-retardant intermediate with ammonium polyphosphate as the core, an ionic complex layer formed by polydiallyldimethylammonium chloride on the surface, and a silica shell layer composed of a silicon-oxygen network, cooperates pentaerythritol and melamine to form an intumescent flame-retardant carbonization skeleton, and uses intercalated layered double hydroxide, aluminum hydroxide, magnesium hydroxide, zinc borate and tannic acid as a synergistic flame-retardant low-smoke suppression component to prepare a low-smoke fireproof coating material through an aqueous formulation system. The present application cooperatively realizes the unity of high solid content and low viscosity construction and high filler and low smoke retardation, solves the mechanism conflict that the comprehensive performance of the existing aqueous thick film flame-retardant system is difficult to be simultaneously optimized, and has wide application value in cable fireproofing protection engineering.

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