A kind of silica airgel fireproof, waterproof, environmental protection thermal insulation paste and preparation method thereof

Abstract

The invention belongs to the technical field of energy-saving and environmentally friendly materials, and particularly relates to a fireproof, waterproof and environmentally friendly silica aerogel heat-insulation paste for building and industrial energy-saving heat insulation. An aerogel precursor is added in the heat-insulation paste during preparation, silica sol and S=silicone modified acrylicemulsion are used as binding agent, and thus, the fireproof, waterproof and environmentally friendly silica aerogel heat-insulation paste has heat-insulation performance which is incomparable to a traditional material. After the heat-insulation paste is dry, the mechanical strength of the heat-insulation paste is high, fireproof A 1 level is realized, moreover, the fireproof, waterproof and environmentally friendly silica aerogel heat-insulation paste has the advantages of good waterproofness and low cost, and a novel material is provided for building energy conservation, environmental protection and industrial energy conservation.

Description

technical field [0001] The invention belongs to the technical field of energy-saving and environment-friendly materials, and in particular relates to a fireproof, waterproof and environment-friendly heat preservation paste prepared from an airgel precursor for building and industrial energy-saving heat preservation and a preparation method thereof. Background technique [0002] In recent years, the field of building energy conservation has gradually attracted people's attention. Traditional organic thermal insulation materials are bound to gradually fade out of the stage of thermal insulation materials due to their flammability, large amounts of harmful gases generated during combustion, and difficulty in degradation. Common inorganic thermal insulation materials, such as cement and lime paste, have high mechanical strength, but high thermal conductivity, poor thermal insulation effect, short hardening time, and large shrinkage. In addition, the weak link of building exterio...

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Problems solved by technology

[0004] Some traditional thermal insulation pastes are fireproof but not waterproof; some are fireproof and waterproof but have high thermal conductivity. Therefore, the preparation of fireproof, waterproof, low-carbon and environmentally friendly energy-saving thermal insulation pastes to solve the above problems has immeasurable development prospects

[0005] The Chinese patent No. 201210108965.3 discloses a high-performance nano-insulation paste, which uses a fibrous magnesium-rich clay mineral sepiolite wool, and adds active ingredients such as glass beads and airgel. The paste has good mechanical strength, and its thermal conductivity can reach 0.043W / m·K, but the use of traditional airgel powder is expensive and difficult to disperse, resulting in high cost and thermal conductivity

[0006] The Chinese patent No. 201010185554.5 discloses a low-carbon ceramic wall thermal insulation paste and its preparation method. The thermal insulation paste is composed of a large amount of high-adhesion inorganic binder and a small amount of preferred film-forming agent. Particles and other flame-retardant materials are used as fillers. The flame-retardant performance of the thermal insulation paste is Class A, the thermal conductivity can reach 0.048w / m·k, and the compressive and tensile properties are good, but the use of traditional airgel powder is expensive. , not easy to disperse, resulting in high cost and thermal conductivity

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