Magnesium oxychloride fireproofing

Abstract

Abstract A METHOD OF MAKING A FOAMED FIREPROOF PRODUCT OF MAGNESIUM OXYCHLORIDE CEMENT AND THE RESULTING PRODUCT. A POROUS SUBSTRATE IS IMPREGNATED WITH A FOAMING MIXTURE OF MAGNESIUM CHLORIDE, MAGNESIUM OXIDE, AND FROTHING AGENT IN WATER. THE MIXTURE HARDENS WITH SMALL VOIDS THROUGHOUT THE POROUS SUBSTRATE, THUS PROVIDING A FIREPROOF PRODUCT OF LOW DENSITY. THE FOAMED PRODUCT MAY BE FORMED IN A MOLD WITH FIBROUS ELEMENTS INTRODUCED INTO THE FOAMING MIXTURE. THE CEMENT MIXTURE MAY BE CO-FOAMED WITH POLYURETHANE FOAM. THE FIREPROOF PRODUCTS OF RELATIVELY LOW DENSITY ARE PARTICULARLY VALUABLE FOR BUILDING AND CONSTRUCTION PURPOSES. MAGNESIUM POWDERED IS THE PREFERRED FROTHING AGENT WHICH, IN CAMBINATION WITH A SURFACTANT, INDUCES A LARGE VOLUME OF SMALL BUBBLES THAT REMAIN IN THE COMPOSITION AS IT IS SET.

Inventors

• 👤 H Thompson

Bibliographic Details