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Preparation method of porous spherical compound humidifying agent

A technology of humidity-conditioning agent and porous spherical type, which is applied in the field of preparation of porous spherical composite humidity-conditioning agent, which can solve the problems of insufficient number of pores, moisture capacity and moisture absorption and desorption performance to be further improved, so as to increase the specific surface area, Fast response to moisture absorption and desorption, and convenient reuse

Inactive Publication Date: 2014-04-16
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 enough, and the wet capacity and moisture absorption and desorption performance need to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: a kind of preparation method of porous spherical composite humidity-conditioning agent is characterized in that the steps are as follows:

[0017] a. activating the zeolite at 450° C. for 2 hours to obtain the activated zeolite;

[0018] 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; then add 0.9 parts of sodium carboxymethyl cellulose, 3 parts Add the activated zeolite and 0.3 parts of potassium persulfate into the reactor filled with the above solution (the solution obtained after the neutralization of polyacrylic acid and sodium hydroxide solution), and stir the reaction at a temperature of 70 ° C. After about 30 minutes of reaction 1. Dissolve 0.3 parts of aluminum chloride in 10 parts of distilled water to make a solution and add it to the above reactor, then add 0.3 parts of N,N-methylenebisacrylamide, cont...

Embodiment 2

[0022] Embodiment 2: a kind of preparation method of porous spherical composite humidity-conditioning agent is characterized in that the steps are as follows:

[0023] a. activating the zeolite at 450° C. for 2.5 hours to obtain the activated zeolite;

[0024] 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) to neutralize; then add 1.8 parts of sodium carboxymethyl cellulose, 4.5 parts Add the activated zeolite and 0.3 parts of potassium persulfate into the reactor filled with the above solution (the solution obtained after the neutralization of polyacrylic acid and sodium hydroxide solution), and stir the reaction at a temperature of 75 ° C. After about 30 minutes of reaction 1. Dissolve 0.3 parts of aluminum chloride in 10 parts of distilled water to make a solution and add it to the above reactor, then add 0.3 parts of N,N-methylenebisacrylamide, conti...

Embodiment 3

[0028] Embodiment 3: a kind of preparation method of porous spherical composite humidity-conditioning agent, it is characterized in that the steps are as follows:

[0029] a. activating the zeolite at 450° C. for 3 hours to obtain the activated zeolite;

[0030] 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; then add 2.7 parts of sodium carboxymethyl cellulose, 6 parts Add the activated zeolite and 0.3 parts of potassium persulfate into the reactor filled with the above solution (the solution obtained after the neutralization of polyacrylic acid and sodium hydroxide solution), and stir the reaction at a temperature of 80 ° C. After about 30 minutes of reaction 1. Dissolve 0.3 parts of aluminum chloride in 10 parts of distilled water to make a solution and add it to the above reactor, then add 0.3 parts of N,N-methylenebisacrylamide, ...

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Abstract

The invention discloses a preparation method of a porous spherical compound humidifying agent, which comprises the following steps of: a, activating zeolite for 2-3h at a temperature of 450 DEG C to obtain activated zeolite; b, adding 30 parts by mass of polyacrylic acid into a sodium hydroxide solution prepared from 15 parts by mass of sodium hydroxide and 100 parts by mass of distilled water so that polyacrylic acid is neutralized, then adding 0.9-2.7 parts by mass of sodium carboxymethylcellulose, 3-6 parts by mass of activated zeolite and 0.3 part by mass of potassium persulfate into a container containing the solution, stirring for reaction at a temperature of 70-80 DEG C; 30min later, dissolving 0.3 part by mass of aluminium chloride in 10 parts by mass of distilled water to obtain a solution, adding the solution in the reactor; adding 0.3 part by mass of N,N-methylenebisacrylamide, continuously stirring for reaction for 0.5-1h till a gel effect happens; and c, adding 0.9 part by mass of sodium bicarbonate into the reactor to generate aluminium hydroxide and carbon dioxide, carrying out primary foaming, stirring for reaction for 0.5-1h to obtain a synthetic product; heating for 1-2h at a temperature of 150 DEG C so that the aluminium hydroxide is decomposed and water is evaporated, and carrying out secondary foaming and drying to obtain the porous spherical compound humidifying agent. The porous spherical compound humidifying agent has the advantages of high humidifying response speed, high moisture content and moisture capacity, good regulation stability, convenience in preparation, low cost, good effect, environmental friendliness and no pollution.

Description

technical field [0001] The invention relates to a preparation method of a porous spherical composite humidity-regulating agent, which is mainly suitable for the humidity regulation of cultural relics preservation environment. Background technique [0002] 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 various research work on humidity-conditioning materials. [0003] Humidity control materials can be roughly divided into the following categories: special silica gel, montmorillonite, inorganic salts, organic polymer materials, etc., each with its own advantages and disadvantages. Composite humidity-conditioning materials are prepared by mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/08C08L51/00C08L51/02C08K3/34C08F291/06C08F291/08C08F2/44C09K3/00
Inventor 徐鹏飞彭志勤王秉
Owner ZHEJIANG SCI-TECH UNIV
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