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Light super-strong aerogel heat insulation coating and preparation method thereof

A technology of thermal insulation coating and aerogel, which is applied in fire-resistant coatings, alkali metal silicate coatings, coatings, etc., to achieve the effect of improving thermal insulation performance, good mechanical performance and excellent thermal insulation performance

Inactive Publication Date: 2021-08-13
NAVAL UNIV OF ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects existing in the existing airgel coating, the present invention provides a light super-strong heat-insulating airgel coating and its preparation method, which uses high temperature resistant fiber and inorganic binder to strengthen the airgel coating Mechanical strength, to solve the easy cracking of airgel coating

Method used

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  • Light super-strong aerogel heat insulation coating and preparation method thereof
  • Light super-strong aerogel heat insulation coating and preparation method thereof
  • Light super-strong aerogel heat insulation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Take 50 parts of potassium sodium silicate, 100 parts of deionized water and 4 parts of sodium carboxymethylcellulose, place them in a stirring container, stir at a speed of 300rpm for 30min, and after the sodium carboxymethylcellulose is fully dissolved, Add 30 parts of mullite fiber loose cotton (diameter 3-5 μm), and stir at a speed of 500 rpm for 30 minutes to obtain a uniformly dispersed fiber slurry;

[0042] (2) Take 50 parts of deionized water, 3 parts of sodium lauryl sulfate and 0.5 part of dimethylmaleate ammonium salt dispersant, put them in a stirring container, stir at a speed of 100rpm for 10min, and wait until the solvents are fully mixed , adding 5 parts of silica airgel powder (particle size 2-40 μm), stirring at a speed of 300 rpm for 120 min to obtain an aqueous dispersion of silica airgel;

[0043] (3) Add the fiber slurry in step (1) and the water dispersion of silica airgel in step (2) to the stirring vessel, stir at a speed of 500rpm for 30mi...

Embodiment 2

[0047] (1) Take 60 parts of potassium sodium silicate, 50 parts of deionized water and 3 parts of sodium alginate, put them in a stirring container, and stir at a speed of 300 rpm for 30 minutes. After the sodium alginate is fully dissolved, add 50 parts of zirconia fiber Loose cotton (3-8 μm in diameter), stirring at a speed of 500 rpm for 30 minutes to obtain a uniformly dispersed fiber slurry;

[0048] (2) Take 80 parts of deionized water, 4 parts of sodium dodecylbenzenesulfonate and 1 part of dimethylmaleate ammonium salt dispersant, put them in a stirring container, stir at a speed of 300rpm for 10min, and wait until the solvent is fully After mixing, add 8 parts of alumina airgel powder (particle size 2-40 μm), and stir at a speed of 500 rpm for 120 minutes to obtain an aqueous dispersion of alumina airgel;

[0049] (3) Add the fiber slurry in step (1) and the aqueous dispersion of silica airgel in step (2) to the stirring vessel, stir at a speed of 500rpm for 20min, an...

Embodiment 3

[0053] (1) Take 100 parts of potassium sodium silicate, 150 parts of deionized water and 6 parts of attapulgite, put them in a stirring container, and stir at a speed of 300 rpm for 5 minutes. After the attapulgite is fully dispersed, add 10 parts of alumina fiber Loose cotton (diameter 3-4μm), stirring at 800rpm for 30min to obtain evenly dispersed fiber slurry;

[0054] (2) Take 120 parts of deionized water, 10 parts of fatty alcohol sodium sulfate and 2 parts of dimethyl succinate ammonium salt dispersant, put them in a stirring container, and stir at a speed of 100 rpm for 20 minutes. After the solvent is fully mixed, add 15 One part of titanium dioxide airgel powder (2~40 μm in particle size), stirred at a speed of 300 rpm for 120 min to obtain an aqueous dispersion of titanium dioxide airgel;

[0055] (3) Add the fiber slurry in step (1) and the water dispersion of silica airgel in step (2) to the stirring vessel, stir at a speed of 400rpm for 30min, and then , add 50 p...

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Abstract

The invention discloses a light super-strong aerogel heat-insulating coating and a preparation method thereof, and belongs to the technical field of high-temperature-resistant heat-insulating coatings, and the light super-strong aerogel heat-insulating coating comprises the following components: an inorganic binder, aerogel powder, a hollow heat-insulating filler, reinforced fibers, a thickener, a surfactant, a dispersant and deionized water. The coating prepared by the invention has the characteristics of good dispersion performance, good stability and the like; an aerogel coating formed after curing and drying has the characteristics of high temperature resistance, light weight, good heat insulation performance, high crack resistance and the like; ultrasonic-assisted preparation is adopted, large bubbles in the coating are eliminated, micron-sized bubbles are formed, the porosity of the coating is increased, and the heat insulation capacity of the coating is improved; and the preparation method is simple, convenient and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of high-temperature-resistant heat-insulating coatings, in particular to a lightweight super-strong airgel heat-insulating coating and a preparation method thereof. Background technique [0002] Safe and effective thermal insulation measures are required in fields such as building energy saving, heat loss of heat transmission pipes, and economical operation of industrial thermal facilities. Spraying thermal insulation paint on the periphery of buildings and the surface of thermal facilities is a common means of thermal insulation. On the one hand, thermal insulation coatings can reduce the energy loss of buildings and thermal facilities, and on the other hand, they can ensure the safe and reliable operation of thermal facilities. Heat insulation coatings can be divided into barrier type, reflective type, radiation type and composite type according to the principle of heat insulation. Among them, the barrie...

Claims

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Application Information

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IPC IPC(8): C09D1/04C09D7/61C09D7/20
CPCC09D1/04C09D5/18C09D7/20C09D7/61C09D7/70
Inventor 赵爽姚亿文杨自春陈国兵李昆锋费志方陈俊张震杨飞跃
Owner NAVAL UNIV OF ENG PLA
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