Preparation method of foamed ceramic heat-preserving material

A technology for thermal insulation materials and foam ceramics, applied in the field of building materials, can solve problems such as the inability to guarantee the service life, and achieve the effects of good thermal insulation performance, improved corrosion resistance and mildew resistance, and enhanced temperature resistance performance.

Active Publication Date: 2014-10-08
苏州远略知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lightweight ceramic foam for external wall insulation prepared by this patent is conducive to waste utilization, environmental protection, and effectively reduces product costs, but its aging resistance, that is, the service life cannot be guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Dissolve 100 grams of kaolin and 1 gram of aminovinylsilane coupling agent in 1 kilogram of water, heat in a water bath to 50 ° C, and disperse ultrasonically for 15 minutes to obtain a viscous liquid; continue to add 200 grams of green layer cerite powder and titanium dioxide powder 20 grams of material, high-speed stirring and dispersing for 15 minutes, to obtain a dispersed mixed slurry; continue to add 100 grams of sodium sulfate powder for ball milling and granulation, to obtain mixed particles; The foaming agent calcium carbonate is milled in a ball mill for 4 hours, and then finally sintered at high temperature. The sintering furnace is first heated to 300°C, kept for 1 hour, and then heated to 800°C, kept for 1 hour to obtain a foam ceramic insulation material.

Embodiment 2

[0025] Dissolve 100 grams of kaolin and 5 grams of aminovinylsilane coupling agent in 3 kilograms of water, heat in a water bath to 65 ° C, and disperse ultrasonically for 50 minutes to obtain a viscous liquid; continue to add 500 grams of green layer cerite powder and titanium dioxide powder 40 grams of material, high-speed stirring and dispersing for 50 minutes, to obtain a dispersed mixed slurry; continue to add 300 grams of sodium sulfate powder for ball milling and granulation, to obtain mixed particles; according to the prepared mixed particles, 3 kg of foamed ceramic blank and 60 grams of inorganic The foaming agent sodium bicarbonate is milled in a ball mill for 6 hours, and then finally sintered at high temperature. The sintering furnace is first heated to 400°C, kept for 2 hours, and then heated to 1000°C, kept for 3 hours to obtain a foam ceramic insulation material.

[0026] In embodiment 1~2, the inorganic blowing agent that adopts, it represents by mass percentage...

Embodiment 3

[0034] (1) Mixing: Take 320 grams of dolomite, 350 grams of calcium carbonate, and 80 grams of calcium sulfate for batching, and mix them with a vibrating ball mill for 0.5 hours to obtain powder;

[0035] (2) Sand milling: put the above powder into a sand mill, add 150 grams of carbon powder, 100 grams of silicon powder, 1000 grams of deionized water and 10 grams of dispersant polyvinyl alcohol, and sand mill for 0.5 hours to obtain a slurry ;

[0036] (3) Granulation: the above-mentioned sand-milled slurry is granulated by a spray granulator, and the particle size is 30 μm.

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Abstract

The invention relates to a preparation method of a foamed ceramic heat-preserving material. The preparation method comprises the following steps: 1) dissolving kaolin and an aminovinyl silane coupling agent in water, heating in a water bath, and ultrasonically dispersing to obtain a viscous liquid; 2) adding rinkolite powder and titanium dioxide powder and stirring and dispersing at a high speed to obtain dispersed mixed slurry; 3) adding sodium sulfate powder, ball-milling and pelleting to obtain mixed particles; and 4) ball-milling the mixed particles, a foamed ceramic blank and an inorganic foamer in the ball-mill, and finally carrying out high-temperature sintering. The material provided by the invention has the advantages that 1) kaolin is used as a functional modifier, so that the corrosion resistance and mildew prevention of the ceramic material can be improved, and meanwhile, kaolin also serves as filler to improve the mechanical strength of the foamed ceramic; 2) the used rinkolite powder is an environment-friendly new material; and as a solid-solid phase change energy storage material, the rinkolite powder has high-and-low-temperature resistance and can improve the heat efficiency of the foamed ceramic and reduce the contraction and expansion of the foamed ceramic, thus achieving the effects of light weight and good heat-preserving performance.

Description

technical field [0001] The invention relates to a production process of a foamed ceramic material, in particular to a preparation method of a foamed ceramic thermal insulation material, which belongs to the field of building materials. Background technique [0002] At present, the mainstream products of external wall insulation materials in China are organic insulation materials such as polystyrene foam board and polystyrene extruded board. The advantages of these organic insulation materials are excellent insulation performance and low price, but there are also fatal flaws, namely They are all combustible materials and pose a fire hazard. [0003] Patent ZL201210034759.2 discloses a lightweight foamed ceramic for exterior wall insulation and its preparation method. First, 60-90 parts by mass of industrial solid waste and 10-40 parts of fluxing material are prepared by wet grinding. After the slurry is obtained, it is prepared by a foaming process, wherein the industrial so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B35/63
Inventor 胡敏刚
Owner 苏州远略知识产权运营有限公司
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