Environment-friendly inorganic thermal insulation material and preparation method thereof

Abstract

The invention discloses an environment-friendly inorganic thermal insulation material and a preparation method thereof. The environment-friendly inorganic thermal insulation material is prepared from sodium silicate, sepiolite powder, sepiolite fibers, expanded perlite, titanium dioxide, zinc powder, ferrophosphorus powder, polyaluminum chloride, hollow glass microspheres, nano silica aerogel powder and an organic silicone water repellent; the preparation method comprises the steps of firstly, adding the titanium dioxide and the sepiolite powder into the sodium silicate, stirring and dispersing; adding the expanded perlite and the sepiolite fibers to prepare a mixture A; then, mixing the zinc powder, the ferrophosphorus powder, the polyaluminum chloride, the hollow glass microspheres, the nano silica aerogel powder and the organic silicone water repellent to prepare a mixture B; finally, mixing the mixture A with the mixture B, and evenly stirring to prepare the thermal insulation material. The thermal insulation material is prepared by compounding the raw materials, thus being good in thermal insulation performance, strong in compression resistance and crack resistance and excellent in fire resistance and corrosion resistance; furthermore, the environment-friendly inorganic thermal insulation material is safe and environmentally-friendly.

Description

technical field [0001] The invention belongs to the field of thermal insulation materials, in particular to an environment-friendly inorganic thermal insulation material and a preparation method thereof. Background technique [0002] Insulation materials are a necessity in the fields of construction, chemical industry, thermoelectricity and so on. At present, most of the insulation materials are organic insulation materials. The production, preparation and use of commonly used organic thermal insulation materials will have an impact on the environment, and organic thermal insulation materials are easy to burn and produce harmful gases in a fire. Therefore, inorganic thermal insulation materials with fireproof properties are favored. [0003] The thermal expansion coefficient of the inorganic thermal insulation material is small, and the performance of anti-cracking and anti-shedding is excellent. However, the current inorganic thermal insulation materials have a single fun...

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Problems solved by technology

However, the current inorganic thermal insulation materials have a single function, poor compressive performance, and poor thermal insulation performance. The thermal insulation materials using water glass as the adhesive have a long curing time and insufficient bonding strength, which limits their scope of use. And the current inorganic- Organic thermal insulation materials are organic resins added to inorganic thermal insulation materials to improve the water resistance and compression resistance of the product. However, the combination of inorganic and organic materials has problems such as poor compatibility and low curing rate.

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