Thermal insulation bedding tile block based on nano aerogel particles and preparation method of thermal insulation bedding tile block

Abstract

The invention discloses a thermal insulation bedding tile block with long service life and high strength special for a steam pipeline based on nanometer aerogel particles. The bedding tile block comprises the following raw materials in percentage by mass: 30-50% of magnesium oxide, 20-40% of halogen sheets, 0-20% of ceramic fibers and 10-30% of modified nanometer aerogel particles. The modified nano aerogel is obtained by taking isobutyltriethoxysilane or methyltrimethoxysilane as a particle surface modifier and carrying out uniform surface pretreatment on nanometer aerogel particles. The raw materials are mixed with deionized water and then cast and cured to obtain the thermal insulation tile block, and the ratio of the deionized water to the total mass of the magnesium oxide and the halogen sheets is (50-80): (60-80). The thermal insulation bedding tile block prepared by the invention has the characteristics of long service life, high strength and the like, and the aerogel is added as a thermal insulation filler, so that the heat loss of a pipeline can be effectively reduced; and the thermal insulation bedding tile block has stable physical properties, no radioactivity, environmental safety, no toxicity and no odor.

Description

technical field [0001] The invention belongs to the technical field of heat insulation and heat preservation of pipelines, and in particular relates to a long-life, high-strength heat-insulation bedding tile for steam pipelines based on nano-airgel particles and a preparation method thereof. Background technique [0002] With the continuous introduction of new high-efficiency heat insulation materials, heat insulation materials have penetrated into the insulation of long-distance steam pipelines and the insulation of special parts such as valves, hydrophobic devices, and pipe supports. Among them, the pipe support usually transfers the heat of the medium to the atmosphere through the heat conduction of the support plate and the rib plate and the heat dissipation of the bottom plate. It can be seen from calculation and actual measurement that the heat loss of the pipe support accounts for about 20% to 30% of the total heat loss of the pipe, which requires key heat insulation ...

AI Technical Summary

Problems solved by technology

(2) Anti-loose design failure

Although the pipe support adopts anti-loosening design such as spring pads, the creep of the ear plate under long-term load and high temperature conditions leads to its anti-loosening failure, and the relative displacement of the pipe support and the pipe occurs, destroying the overall insulation of the steam pipeline

(3) The hard insulation block is fragile

[0004] To sum up, in view of the poor heat resistance, poor heat preservation effect, low toughness, short service life and high production cost of existing market products and technologies, a special heat insulation for steam pipelines based on nano-airgel particles is needed. Paving tiles to solve the problems of poor heat resistance, poor thermal insulation effect, low toughness, and short service life of heat-insulating padding tiles in the prior art

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