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A kind of preparation method of humidity control material

A technology for humidity-conditioning materials and raw materials, which is applied in chemical instruments and methods, layered products of hydraulic substances, layered products, etc., and can solve the application limitations of humidity-conditioning materials, damage to the porous structure of materials, and poor control of porosity, etc. The problem is to achieve the effects of low cost of raw materials, low synthesis temperature, and saving production and preparation costs.

Active Publication Date: 2016-06-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been some introductions on the development of humidity-regulating materials, such as the Chinese invention patent "High Efficiency Humidity-Controlling Material" (CN101108902), but due to the complicated preparation process and expensive raw materials, the application of humidity-regulating materials is greatly restricted
However, the Chinese invention patent "Inorganic Humidity Regulating Panel and Its Manufacturing Method" (CN1788995) needs to be fired at 800-1200°C, which destroys the porous structure of the material, poorly controls the porosity, and affects the humidity control performance.

Method used

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  • A kind of preparation method of humidity control material
  • A kind of preparation method of humidity control material
  • A kind of preparation method of humidity control material

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Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0025] Firstly, river silt was selected (collected from the Zhengzhou section of the lower reaches of the Yellow River, in which SiO 2 46.8%; Al 2 o 3 20.5%) as the main raw material. Select slough (analytically pure, provided by China Sinopharm Reagent Co., Ltd.) as auxiliary raw material, mix above-mentioned main raw material and auxiliary raw material, get different CaO / SiO in the embodiment 1-5 as shown in table 1 2 Mix the main raw materials and auxiliary raw materials in proportion, and then add water to the above-mentioned mixed material. The amount of water added is 10% of the mixed material mass. After stirring evenly, mold it under 30MPa pressure to obtain length×width×height= 40×15×15mm mixture layer, take the mixture layer as a formed test block, put it into a hydrothermal reaction kettle, and obtain a humidity-regulating effect after 12 hours of hydrothermal treatment at a temperature of 200°C and a pressure of 1.5MPa. porous moisture-regulating material. The ...

Embodiment 6-8

[0029] Preparation of sepiolite modified river silt humidity control material method is as follows: first select main raw material river silt, select auxiliary raw material slaked lime (analytically pure, provided by China National Pharmaceutical Reagent Co., Ltd.), modified raw material sepiolite (provided by Hunan Provided by Hongyan Sepiolite Co., Ltd., Xiangtan County, Province), above-mentioned main raw material and auxiliary raw material are mixed, add the water of 10% of mixture quality, add the water that accounts for its quality 10% in modified raw material sepiolite, then mix The upper layer of the material is paved with sepiolite to form two layers, and CaO / SiO is selected 2 The ratio is 0.8, and the amount of sepiolite is shown in Table 2; it is formed under a pressure of 30 MPa; the formed test block is placed in a hydrothermal reactor, and the temperature is 200 ° C, and the pressure is 1.5 MPa. Saturated steam pressure hydrothermal treatment for 12 hours After t...

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Abstract

The invention relates to a preparation method of a humidity controlling material. Massive gathered river alluvial sediments and meerschaum wide in distribution are raw materials and react under saturated vapor pressure of a hydrothermal kettle, an original porous structure of most of the meerschaum is reserved, needle-shaped tobermorite is generated, a composite porous material is formed, and the air humidity in a room can be adjusted to keep 40-70%. The humidity controlling material comprises the newly generated tobermorite and the meerschaum modified river alluvial sediments, the river alluvial sediments and hydrated lime are mixed and serve as the base material, the graded composite technology is adopted, and the superior building humidity controlling material is prepared. The indoor humidity of a bedroom, an office, a warehouse workshop, a museum and the like can be effectively adjusted and keeps within the needed proper humidity range. The humidity controlling material is a novel inorganic material with the self-humidity controlling characteristic and can replace an existing humidity controlling system.

Description

technical field [0001] The invention relates to a method for preparing a humidity-regulating material, in particular to a method for preparing a high-efficiency humidity-regulating material from river silt by using hydrothermal synthesis technology. The invention belongs to the technical field of preparation of inorganic wall materials. Background technique [0002] Materials are constantly developing in the direction of functionalization, intelligence, ecology and high performance. The development of ecological building materials with functions such as self-humidity regulation, self-cleaning and self-temperature regulation is of great significance for improving the living environment of people, promoting circular economy and sustainable development. Especially in our country, due to the relatively poor thermal insulation performance of buildings, the indoor temperature and humidity fluctuate greatly with the external environment. energy consumption and smog weather. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B13/04
CPCB32B13/00
Inventor 景镇子范俊杰濮溧章毅
Owner TONGJI UNIV
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