Renewable silicon oxide aerogel composite material and preparation method, regeneration method and application thereof

• Main Authors: ZHANG XUETONG, LI TAILING
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL PROCESSES OF COMPOUNDING; LIME, MAGNESIA; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF NATURAL STONE; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention discloses a renewable silicon oxide aerogel composite material and a preparation method, a regeneration method and application thereof. The renewable silicon oxide aerogel composite material mainly comprises silicon oxide aerogel and temperature-sensitive macromolecules with temperature response characteristics. The preparation method comprises the following steps: uniformly mixing temperature-sensitive macromolecules and water to form a uniform aqueous solution or emulsion, and then uniformly dispersing silicon oxide aerogel in the uniform aqueous solution or emulsion to obtaina silicon oxide aerogel dispersion; and then carrying out variable-temperature treatment and drying treatment to obtain the renewable silicon oxide aerogel composite material. The renewable silicon oxide aerogel composite material is high in aerogel content, low in density, free of powder falling, low in heat conductivity, hydrophobic and high in mechanical strength. The preparation process is simple, no organic solvent i