A kind of preparation method of sodium polyacrylate-halloysite-konjac glucomannan composite humidity-conditioning agent

A technology of konjac glucomannan and sodium polyacrylate, which is applied to the preparation of high-performance sodium polyacrylate-halloysite-konjac glucomannan composite humidity-regulating agent, and the humidity adjustment of cultural relics preservation environment. In the field, it can solve the problems of insufficient number of pores and insufficient specific surface area, etc., to achieve large specific surface area, improve humidity control performance, and good humidity stability

Inactive Publication Date: 2014-10-22
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of preparation method of sodium polyacrylate-halloysite-konjac glucomannan composite humidity-conditioning agent, it is characterized in that the steps are as follows:

[0015] a. activating halloysite at 450° C. for 2 hours to obtain activated halloysite;

[0016] 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 in parts by mass Sugar, 3 parts of activated halloysite, 0.01 part of nanometer silver-loaded antibacterial powder, 0.3 part of potassium persulfate, 0.2 part of N,N'-methylenebisacrylamide, prepared by 0.3 part of aluminum chloride and 10 parts of water Add the aluminum chloride solution formed into the reactor containing the above-mentioned neutralized solution (the solution obtained after the neutralization of polyacrylic acid and sodium hydroxide sol...

Embodiment 2

[0019] Embodiment 2: a kind of preparation method of sodium polyacrylate-halloysite-konjac glucomannan composite humidity-conditioning agent, it is characterized in that the steps are as follows:

[0020] a. activating halloysite at 450°C for 2.5 hours to obtain activated halloysite;

[0021] b. Take 30 parts of polyacrylic acid in parts by mass, add 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 Sugar, 4.5 parts of activated halloysite, 0.5 part of nanometer silver-loaded antibacterial powder, 0.3 part of potassium persulfate, 0.3 part of N,N'-methylenebisacrylamide, formulated by 0.9 part of aluminum chloride and 10 parts of water Add the aluminum chloride solution formed into the reactor containing the above-mentioned neutralized solution (the solution obtained after the neutralization of polyacrylic acid and sodium hydroxide sol...

Embodiment 3

[0024] Embodiment 3: a kind of preparation method of sodium polyacrylate-halloysite-konjac glucomannan composite humidity-conditioning agent, it is characterized in that the steps are as follows:

[0025] a. activating halloysite at 450° C. for 3 hours to obtain activated halloysite;

[0026] b. Take 30 parts by mass of polyacrylic acid, add 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 by mass of konjac glucomannan Sugar, 6 parts of activated halloysite, 1 part of nanometer silver-loaded antibacterial powder, 0.3 part of potassium persulfate, 0.4 part of N,N'-methylenebisacrylamide, prepared by 1.5 parts of aluminum chloride and 10 parts of water The formed aluminum chloride solution was added to the reactor filled with the above-mentioned neutralized solution (the solution obtained after neutralization of polyacrylic acid and sodium hydroxide solution), and stirred an...

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Abstract

The invention relates to a method for preparing a sodium polyacrylate-halloysite-konjac glucomannan composite humidity conditioning agent. The method comprises the following steps of: (a) activating halloysite at the temperature of 450 DEG C; (b) weighing polyacrylic acid, adding the weighed polyacrylic acid into sodium hydroxide liquid, prepared from sodium hydroxide and distilled water, to neutralize, weighing konjac glucomannan, activated halloysite, nano silver-loaded antimicrobial powder, potassium persulfate, N,N'-methylene-bis-acrylamide, and aluminum chloride liquid, prepared from aluminum chloride and water, respectively adding the weighed konjac glucomannan, activated halloysite, nano silver-loaded antimicrobial powder, potassium persulfate, N,N'-methylene-bis-acrylamide and aluminum chloride liquid into a reactor containing neutralized liquid, and carrying out reaction for 1-2 hours while stirring; (c) cooling a polymer obtained in the step (b) to room temperature, then drying the polymer for 2-3 hours at the temperature of 150 DEG C, and carrying out secondary foaming and pore forming; and (d) crushing a dried humidity conditioning material for 2-3 minutes by using a crusher, thereby obtaining a powdered humidity conditioning agent. According to the method for preparing the sodium polyacrylate-halloysite-konjac glucomannan composite humidity conditioning agent, the humidity conditioning agent has the advantages of rapid humidity conditioning response and moisture absorption and desorption rate, large moisture content / capacity, good relative humidity stability, simplicity and convenience in preparation, low cost, good effect, environmental friendliness, no pollution, no toxicity and harmlessness.

Description

technical field [0001] The invention relates to a preparation method of a humidity-conditioning agent, in particular to a preparation method of a high-performance sodium polyacrylate-halloysite-konjac glucomannan composite humidity-conditioning agent for a museum microenvironment. It is mainly suitable for humidity regulation of cultural relics preservation environment. Background technique [0002] my country is an ancient civilization with a history of thousands of years. There are many kinds of cultural relics, and the quantity is extremely rich. However, due to the influence of environmental factors such as temperature, humidity, light, air pollutants and microorganisms during the collection process, the cultural relics have suffered varying degrees of damage. Destruction and damage, in which temperature and humidity are the two most basic conditions. [0003] Compared with the damage caused by photoaging to textile cultural relics and the difficulty of protection, the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08L51/02C08K9/00C08K3/34C08K3/08C08F291/06C08F291/08C08F2/44C08J9/08
Inventor 徐鹏飞王秉胡智文
Owner ZHEJIANG SCI-TECH UNIV
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