Fire retardant insulation dry powder mortar and preparation method thereof

Abstract

The present invention discloses a fire retardant insulation dry powder mortar and a preparation method thereof, the fire retardant insulation dry powder mortar comprises a composite cementitious material, a lightweight aggregate, an admixture, an chemical additives and an organic polymer additive, wherein the composite cementitious material includes cement and byproduct gypsum, the lightweight aggregate is aluminum silicate glass beads, the admixtures includes fly ash, blast furnace slag and expanded vermiculite, the chemical additive includes magnesium aluminum silicate, modified seaweed glue powder, vinyl acetate-tertiary ethylene carbonate-acrylic acid polymer latex powder and 2-naphthalene sulfonate formaldehyde polymer, and the organic polymer additive is hydroxypropyl methylcellulose. The prepared fire retardant insulation dry powder mortar has high compressive strength, high fire retardant temperature, short setting time and low cost.

Description

technical field [0001] The invention relates to a building material, in particular to an environment-friendly dry powder mortar capable of fireproofing and heat preservation and a preparation method thereof. Background technique [0002] At present, my country's building energy consumption accounts for about 1 / 3 of the total energy consumption of the society, and with the development of society, the total energy consumption of buildings is also increasing year by year. Therefore, the development of building energy conservation is of great significance to building a low-carbon economy, achieving energy conservation and emission reduction goals, and maintaining sustainable economic development. One of the main technologies for building energy conservation is external wall insulation, which is realized by compounding one or more layers of thermal insulation materials on the base surface of the building's external wall. [0003] Commonly used building insulation materials are m...

AI Technical Summary

Problems solved by technology

However, vitrified microbead thermal insulation mortar has disadvantages such as low strength and long solidification time. Generally, the solidification time exceeds 12 hours, resulting in a relatively prolonged construction period.

[0005] In the patent application number 201410233074.X, a high-strength vitrified microbead thermal insulation fireproof mortar is prepared by adding polypropylene fiber to increase its strength to prepare high-strength thermal insulation fireproof mortar, but polypropylene fiber itself is an organic material and belongs to the combustible category. This leads to a relatively low fireproof temperature of the fireproof mortar