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Composite geopolymer lightweight moisture-regulating material and preparation method thereof

A humidity-adjusting material and geopolymer technology, applied in cement production, etc., can solve the problems of limited moisture absorption and desorption capacity, slow moisture absorption and desorption speed, etc., and achieve high-efficiency moisture absorption and desorption performance, simple process, and low energy consumption.

Active Publication Date: 2019-01-22
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, diatomite, sepiolite, zeolite, vermiculite, allophane, etc. are mainly used as humidity control materials, and there are common problems such as limited moisture absorption and desorption capacity, and slow moisture absorption and desorption speed.

Method used

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  • Composite geopolymer lightweight moisture-regulating material and preparation method thereof
  • Composite geopolymer lightweight moisture-regulating material and preparation method thereof
  • Composite geopolymer lightweight moisture-regulating material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A composite geopolymer lightweight humidity-conditioning material in this embodiment, the humidity-conditioning material is prepared from the raw material components in Table 1 below, wherein: the average particle size of the metakaolin is 10 μm; the modified Diatomaceous earth is made of calcium chloride (CaCl 2 ) is prepared by modifying diatomite;

[0036] The modulus of the activator is 1.2 to 1.6;

[0037] The modulus of the water glass is 3.1-3.4, the content of silicon dioxide is ≥ 26%, and the content of sodium oxide is ≥ 8.2%. The specification of the purity of the sodium hydroxide is chemically pure, and the purity is ≥ 99%.

[0038] Each raw material component and content used in the preparation of the humidity-conditioning material in Table 1 Example 1

[0039]

[0040] The composite geopolymer lightweight humidity-controlling material described above in this embodiment is prepared by the following method, including the following steps:

[0041] 1) Dis...

Embodiment 2

[0053] A composite geopolymer lightweight humidity-conditioning material in this embodiment, the humidity-conditioning material is prepared from the raw material components in Table 2 below, wherein: the average particle size of the metakaolin is 10 μm; the modified Diatomaceous earth is made of calcium chloride (CaCl 2 ) is prepared by modifying diatomite;

[0054] The modulus of the activator is 1.2 to 1.6;

[0055] The modulus of the water glass is 3.1-3.4, the content of silicon dioxide is ≥ 26%, and the content of sodium oxide is ≥ 8.2%. The specification of the purity of the sodium hydroxide is chemically pure, and the purity is ≥ 99%.

[0056] Each raw material component and content used in the preparation of humidity-conditioning material in table 2 embodiment 2

[0057]

[0058] The composite geopolymer lightweight humidity-controlling material described above in this embodiment is prepared by the following method, including the following steps:

[0059] 1) Diss...

Embodiment 3

[0068] A composite geopolymer lightweight humidity-conditioning material of this embodiment, the humidity-conditioning material is prepared from the raw material components in the following Table 3, wherein: the average particle size of the metakaolin is 10 μm; the modified Diatomaceous earth is made of calcium chloride (CaCl 2 ) is prepared by modifying diatomite;

[0069] The modulus of the activator is 1.2 to 1.6;

[0070] The modulus of the water glass is 3.1-3.4, the content of silicon dioxide is ≥ 26%, and the content of sodium oxide is ≥ 8.2%. The specification of the purity of the sodium hydroxide is chemically pure, and the purity is ≥ 99%.

[0071] Each raw material component and content used in the preparation of the humidity-conditioning material in the embodiment 3 of table 3

[0072]

[0073] The composite geopolymer lightweight humidity-controlling material described above in this embodiment is prepared by the following method, including the following steps...

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Abstract

The invention relates to a composite geopolymer lightweight moisture-regulating material and a preparation method thereof, and belongs to the technical field of composite materials. The moisture-regulating material is prepared from the following components: 100 parts by mass of a cementitious material, 105-115 parts by mass of an activator, and a light aggregate having the amount accounting for 2-5 times the volume of metakaolin, wherein the cementitious material is composed of 70-90 parts by mass of metakaolin and 10-30 parts by mass of modified diatomite, and the light aggregate is polystyrene particles. The preparation method comprises the steps: firstly, stirring solid powder evenly, adding the liquid activator, fully stirring in a concrete stirrer, then adding the polystyrene particles, stirring evenly, pouring into a mould smeared with demoulding oil in advance, placing the mould on a horizontal table top, allowing to stand, curing at room temperature for 1 d, then demoulding totake out a plate-shaped finished product. The prepared moisture-regulating material has the characteristics of high efficiency moisture absorption and desorption, light weight, heat preservation and high strength, no pollution in the preparation process, low energy consumption, no needing of pressure forming and simple process.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular, the invention relates to a composite geopolymer lightweight humidity control material and a preparation method thereof. Background technique [0002] The research and development of humidity-regulating materials and their gradual application in production and life are of self-evident significance to improving the comfort of the living environment, ensuring the normal operation of equipment, and maintaining the sustainable development of the ecological environment. [0003] Humidity-regulating materials can adjust themselves to a hygroscopic state when the environment needs to be dehumidified, and then release the water vapor stored on the surface or inside of the material when the environment needs to be humidified; the humidity in humid areas is high all year round, and can be used in non-humidity or In buildings with low humidity production, humidity-regulating materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/006C04B2111/00017C04B2201/20C04B2201/32C04B2201/50C04B22/062C04B22/00C04B22/124C04B14/106C04B14/08C04B16/08Y02P40/10
Inventor 王敏段平胡悦丰武悦悦丁风宇宋昕桐
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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