A kind of thermal insulation flame retardant building material and preparation method thereof

Abstract

The invention relates to the technical field of building materials, and particularly relates to a heat-insulating flame-retardant building material and a preparation method thereof. The building material comprises the following components in parts by mass: 40-60 parts of artificial light-weight aggregate, 40-60 parts of an inorganic gelling material, 10-20 parts of a nano cement additive, 0.2-1.2 parts of anti-cracking fibers, 0.5-2.5 parts of a defoaming agent, 0.5-2.5 parts of a dispersant, 10-20 parts of water, 6-8 parts of calcium carbonate whiskers, 8-10 parts of magnesium salt whiskers, 0.3-0.8 part of a mortar water retaining agent and 0.2-0.5 part of a water reducing agent. The building material has the beneficial effects that the compressive strength and the flexibility of the building material are improved by adding the calcium carbonate whiskers and the magnesium salt whiskers and further improved by adding the anti-cracking fibers, so that the technical deficiencies that an inorganic heat insulating material is high in hardness and easy to drop are well overcome.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a thermal insulation and flame retardant building material and a preparation method thereof. Background technique [0002] In China's current architectural design and construction, more than 90% have adopted organic thermal insulation materials as thermal insulation materials for exterior wall decoration. Due to its low price and simple construction process, it has been recommended by relevant departments since the 1990s. However, the fatal shortcoming of travel materials is that they are flammable. In recent years, many serious fire accidents in China have been caused by organic thermal insulation materials. [0003] The use of porous, honeycomb light inorganic materials to prepare inorganic thermal insulation materials is another way of thermal insulation. Inorganic thermal insulation materials have the characteristics of environmentally friendly raw materials, non-...

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Problems solved by technology

However, inorganic thermal insulation materials also have deficiencies, mainly in high thermal conductivity, easy water absorption, poor thermal insulation effect, brittleness of materials, easy shrinkage and cracking, etc.

[0004] The application number is 201010597354.0, which discloses a building exterior wall thermal insulation flame-retardant belt. Although it improves the fireproof performance of the external wall thermal insulation system to a certain extent, the vitrified microspheres used in this invention are lightweight aggregates. In application, due to the closed-cell characteristics of vitrified microbeads, the binding force between them and the gel material decreases, and they are easy to fall off during construction.

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