Preparation method of high-strength foamed ceramic

• Main Authors: WEN WEIXIONG, HAN ZHIMING
• Format: Patent
• Language: Chinese; English
• Published: 06.03.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL PROCESSES OF COMPOUNDING; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE; WORKING-UP

The invention discloses a preparation method of high-strength foamed ceramic. The method includes the steps of: 1) weighing the following raw materials by weight: 5-6 parts of lignocellulose; 80-95 parts of polyether; 0.2-0.5 part of a catalyst; 2-5 parts of water; 1.5-3 parts of sodium dodecyl sulfate; and 6-8 parts of toluene diisocynate; 2) adding the components weighed in step 1) into a container, stirring the components uniformly, carrying out reaction for 10-15min, then taking the product out, conducting standing for 8-12h and performing curing to obtain a green body; then putting the green body into a perforated box, conducting vacuum pumping, introducing acetylene, hydrogen and oxygen in a ratio of 1:1:2 to normal pressure, conducting standing for 5-10min, and then conducting ignition and perforation to obtain an organic carrier with a spatial reticular structure. According to the invention, by combining a ceramic slurry with an organic carrier, the strength of the foamed ceramic is effectively improv