A thermal insulation plastering slurry and its application method

Abstract

The invention relates to a novel thermal insulation plaster slurry and a use method thereof, and belongs to the technical field of industrial equipment thermal insulation. The novel thermal insulationplaster slurry is prepared from the following components in parts by weight: 10-30 parts of aluminate cement, 30-60 parts of clay refractory mortar, 10-30 parts of asbestos wool, 3-8 parts of perlite, and 10-30 parts of water. The use method comprises the following steps: evenly pre-stirring the formula amount of aluminate cement and clay refractory mortar, sequentially adding the perlite and asbestos wool and then stirring evenly, then slowly adding water, and stirring evenly; welding pins on a steel structure device or pipeline required for construction, and then lining a thermal insulationlayer; bundling a wire mesh on the thermal insulation layer; after tightening and fixing the wire mesh, performing a plastering operation. The thermal insulation plaster provided by the invention hasthe advantages that the workability and operability of the existing cement-based thermal insulation plaster slurry are improved; the construction is convenient and quick, no crack occurs, no shellingphenomenon occurs, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation protective layers for industrial equipment, and in particular relates to a thermal insulation plastering slurry and a use method thereof. Background technique [0002] At present, the thermal insulation engineering design of industrial equipment often uses inorganic fiber and other thermal insulation materials plus thermal insulation plaster layer. The thermal insulation plaster layer is used as a protective layer, which is a part of the thermal insulation structure. Moisture-proof, corrosion-resistant, weather-resistant and other functions; In addition to the method of smearing the protective layer, another method is to use metal materials as the protective layer. The thermal insulation plastering layer constructed by smearing method mostly uses cement as the basic binder, adding aggregate, powder or admixture, mixing and adding water to form a plastering slurry, plastering and attachi...

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Problems solved by technology

This kind of construction technology requires good cohesion, water retention and smearability of thermal insulation plastering slurry to facilitate construction; in practice, cement-based thermal insulation plastering slurry prepared on site mostly uses mixed mortar, and the admixture used is usually lime , gypsum, fly ash, natural clay, etc. This kind of mortar has insufficient workability and operability. The mortar must be attached to the wire mesh, which is prone to loosening and falling while plastering. The plastering operation is not easy, and the mortar is on the wire mesh. Forming is difficult, and the construction process is slow and difficult; especially on the lower surface of inclined, horizontal, and suspended surfaces, the plastering operation is more difficult. During the drying and hardening process, the plastering layer will shrink and crack after shrinking; on the other hand , The cement-based thermal insulation plastering slurry is solid after hardening, and industrial equipment often needs to be repaired. Because the plaster layer is strong, it is not easy to remove the insulation layer. During the demolition process, the equipment may be damaged.

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