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Preparation method of spherical composite humidity-controlling material

A humidity-conditioning material and spherical technology, which is applied in the field of preparation of humidity-conditioning materials, can solve the problems of insufficient number of pores and insufficient specific surface area, and achieve the effects of large specific surface area, fast moisture absorption rate, and improved wet capacity.

Inactive Publication Date: 2013-03-13
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the number of pores formed during the synthesis process is not large enough, the specific surface area is not large enough, and the wet capacity and moisture absorption and release performance need to be further improved.

Method used

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  • Preparation method of spherical composite humidity-controlling material

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Effect test

Embodiment 1

[0017] Embodiment 1: a kind of preparation method of spherical composite humidity control material is characterized in that the steps are as follows:

[0018] a. activating halloysite at 450° C. for 2 hours to obtain activated halloysite;

[0019] b. Take 30 parts of polyacrylic acid in parts by mass, add to 115 parts of sodium hydroxide solution (dissolve 15 parts of sodium hydroxide in 100 parts of distilled water) for neutralization, and then take 0.9 parts of konjac glucomannan by parts by mass , 3 parts of activated halloysite, 0.3 parts of potassium persulfate, 0.3 parts of N,N'-methylenebisacrylamide, aluminum chloride solution made of 0.3 parts of aluminum chloride and 10 parts of water, respectively added Put it into the reactor filled with the above-mentioned neutralized solution (the solution obtained after neutralization of polyacrylic acid and sodium hydroxide solution), stir and react for 1 hour at a temperature of 70°C; the order of addition is: add persulfuric ...

Embodiment 2

[0023] Embodiment 2: a kind of preparation method of spherical composite humidity control material, it is characterized in that the steps are as follows:

[0024] a. activating halloysite at 450°C for 2.5 hours to obtain activated halloysite;

[0025] b. Take 30 parts of polyacrylic acid in parts by mass, add to 115 parts of sodium hydroxide solution (dissolve 15 parts of sodium hydroxide in 100 parts of distilled water) for neutralization, and then take 1.8 parts of konjac glucomannan in parts by mass , 4.5 parts of activated halloysite, 0.3 parts of potassium persulfate, 0.3 parts of N,N'-methylenebisacrylamide, aluminum chloride solution made of 0.9 parts of aluminum chloride and 10 parts of water, respectively added Put into the reactor filled with the above-mentioned neutralized solution (the solution obtained after neutralization of polyacrylic acid and sodium hydroxide solution), stir and react for 1.5 hours at a temperature of 75°C; the order of adding persulfuric acid...

Embodiment 3

[0029] Embodiment 3: a kind of preparation method of spherical composite humidity control material, it is characterized in that the steps are as follows:

[0030] a. activating halloysite at 450° C. for 3 hours to obtain activated halloysite;

[0031] b. Take 30 parts of polyacrylic acid in parts by mass, add to 115 parts of sodium hydroxide solution (dissolve 15 parts of sodium hydroxide in 100 parts of distilled water) for neutralization, and then take 2.7 parts of konjac glucomannan by parts by mass , 6 parts of activated halloysite, 0.3 parts of potassium persulfate, 0.3 parts of N,N'-methylenebisacrylamide, aluminum chloride solution made of 1.5 parts of aluminum chloride and 10 parts of water, respectively added Put into the reactor filled with the above-mentioned neutralized solution (the solution obtained after the neutralization of polyacrylic acid and sodium hydroxide solution), stir and react for 2 hours at a temperature of 80°C; the order of addition is: add persul...

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Abstract

The invention relates to a preparation method of a spherical composite humidity-controlling material, which comprises the following steps of: a. activating halloysite for 2-3 hours to obtain activated halloysite; b. adding polyacrylic acid into a sodium hydroxide solution obtained by mixing sodium hydroxide with distilled water for neutralization, respectively adding konjac glucomannan, the activated halloysite, potassium peroxodisulfate, N, N'-methylene bisacrylamide and a aluminum chloride solution obtained by mixing aluminum chloride and water into a reactor filled with the neutralized solution, and stirring for reaction; c. adding sodium bicarbonate into the reactor to generate aluminum hydroxide and carbon dioxide, carrying out primary foaming, and stirring for reaction to obtain a synthetic product; d. drying the synthetic product at 80 DEG C and shearing the block synthetic product into small cubic pieces; and e. heating at the temperature of 150 DEG C to decompose aluminium hydroxide and evaporate water, carrying out secondary foaming and drying to obtain the spherical composite humidity-controlling material. The spherical composite humidity-controlling material is simple and convenient to prepare, low in cost, good in effect, environment-friendly and free from pollution.

Description

technical field [0001] The invention relates to a preparation method of a humidity-regulating material, in particular to a preparation method of a spherical composite humidity-regulating material. It is mainly suitable for humidity regulation of cultural relics preservation environment. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for indoor environment, and the relative humidity of indoor air, as an important parameter to measure the quality of indoor environment, has also received more and more attention. [0003] As a passive means of humidity control, humidity control materials do not need to consume any energy. They have important practical significance for the construction of an energy-saving society, the promotion of sustainable development of the ecological environment, the improvement of indoor air quality, and the improvement of environmental comfort. More and more researchers have begun to cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08K9/00C08K3/34C08J9/12C08F291/00
Inventor 徐鹏飞王秉胡智文
Owner ZHEJIANG SCI-TECH UNIV
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