Method for preparing konjac glucomannan composite humidity conditioning agent

A technology of konjac glucomannan and humidity-regulating agent, which is applied in the direction of chemical instruments and methods, and other chemical processes. Good stability and the effect of degrading bacteria

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

[0006] The present invention aims to overcome the deficiencies in the above-mentioned prior art, and provides a preparation method of a konjac glucomannan composite humidity-conditioning agent, which uses konjac glucomannan to increase the wet capacity of the material, and utilizes a special nanopore structure to Improve the humidity control rate and introduce antibacterial materials to solve the problem that the humidity control materials are prone to mildew in high humidity environments; after foaming treatment, multiple porous humidity control materials are formed to have large humidity capacity and fast response to humidity control , improve the dehumidification rate, environmental protection, good stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: a kind of preparation method of konjac glucomannan compound humidity-conditioning agent, it is characterized in that the steps are as follows:

[0016] a. Take 12 parts of sodium hydroxide in parts by mass and add it to 100 parts of deionized water to dissolve, add 30 parts of acrylic acid monomer to the aforementioned sodium hydroxide solution, and stir evenly at a temperature of 65°C;

[0017] B, get 0.3 parts of potassium persulfate initiator by mass parts, 1 part of halloysite with particle size of 200 meshes after activation, 1 part of konjac glucomannan, 0.01 part of nanometer silver-loaded antibacterial powder, 0.3 part of crosslinking agent N, N'-methylenebisacrylamide and 3 parts of urea as a foaming agent were sequentially added to the reactor containing the solution obtained in step a, and reacted at a temperature of 65°C for 20 minutes to obtain a viscous solid product;

[0018] c. After cooling the polymer obtained in step b to room temperatur...

Embodiment 2

[0020] Embodiment 2: a kind of preparation method of konjac glucomannan compound humidity-conditioning agent, it is characterized in that the steps are as follows:

[0021] a. Take 13.5 parts of sodium hydroxide in parts by mass and add it to 110 parts of deionized water to dissolve, add 30 parts of acrylic acid monomer to the aforementioned sodium hydroxide solution, and stir evenly at a temperature of 67.5°C;

[0022] B, get 0.45 parts of potassium persulfate initiators by mass parts, 3 parts of halloysite with a particle size of 200 meshes after activation, 2 parts of konjac glucomannan, 0.5 parts of nanometer silver-loaded antibacterial powder, 0.3 parts of crosslinking agent N, N'-methylenebisacrylamide and 3 parts of urea as a foaming agent were sequentially added to the reactor containing the solution obtained in step a, and reacted at a temperature of 67.5° C. for 25 minutes to obtain a viscous solid product;

[0023] c. After the polymer obtained in step b is cooled t...

Embodiment 3

[0025] Embodiment 3: a kind of preparation method of konjac glucomannan compound humidity-conditioning agent, it is characterized in that the steps are as follows:

[0026] a. Take 15 parts of sodium hydroxide in parts by mass and add it to 120 parts of deionized water to dissolve, add 30 parts of acrylic acid monomer to the aforementioned sodium hydroxide solution, and stir evenly at a temperature of 70°C;

[0027] B, get 0.6 part of potassium persulfate initiator by mass parts, 5 parts of halloysite with particle size of 200 mesh after activation, 3 parts of konjac glucomannan, 1 part of nanometer silver-loaded antibacterial powder, 0.3 part of crosslinking agent N, N'-methylenebisacrylamide and 3 parts of urea as a foaming agent were sequentially added to the reactor containing the solution obtained in step a, and reacted at a temperature of 70° C. for 30 minutes to obtain a viscous solid product;

[0028] c. After cooling the polymer obtained in step b to room temperature,...

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Abstract

The invention relates to a method for preparing a konjac glucomannan composite humidity conditioning agent. The method comprises the following steps of: (a) weighing sodium hydroxide, adding the weighed sodium hydroxide to deionized water for dissolving, adding acrylic monomers into sodium hydroxide liquid, and uniformly stirring at the temperature of 65-70 DEG C; (b) weighing potassium sulfate, activated halloysite with the particle size of 200 meshes, konjac glucomannan, nano silver-loaded antimicrobial powder, N,N'-methylene-bis-acrylamide and urea, sequentially adding the weighed potassium sulfate, activated halloysite, konjac glucomannan, nano silver-loaded antimicrobial powder, N,N'-methylene-bis-acrylamide and urea into a reactor containing the liquid obtained in the step (a), and carrying out reaction for 20-30 min at the temperature of 65-70 DEG C, thereby obtaining a viscous solid product; and (c) after the polymer obtained in the step (b) is cooled to room temperature, drying for 4-5 hours at the temperature of 145-150 DEG C, carrying out decomposition and foaming through the urea so as to obtain a porous humidity conditioning material, and crushing the porous humidity conditioning material for 2-3 min by using a crusher, thereby obtaining humidity conditioning material powder with the particle size of 100-200 meshes. According to the method for preparing the konjac glucomannan composite humidity conditioning agent, the konjac glucomannan composite humidity conditioning agent has the advantages of large moisture content/capacity, good relative humidity stability, simplicity and 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 humidity-regulating material, in particular to a preparation method of a konjac glucomannan composite humidity-regulating agent. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for indoor environmental quality, and the relative humidity of indoor air, as an important parameter to measure indoor environmental quality, 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 conduct various research work on humidity-conditioning materials. [0004] Many humi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C08F222/38C08F2/44C08K9/12C08K3/34C08J9/10C08J3/24C09K3/00
Inventor 俞宁王秉胡智文
Owner ZHEJIANG SCI-TECH UNIV
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