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Preparation method of novel surface grafting modification inorganic nano humidity controlling material

A surface graft modification, inorganic nanotechnology, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of large temperature damage, difficult air humidity, etc., to achieve fast humidity response speed, high humidity capacity Enhanced, better performance effects

Inactive Publication Date: 2012-09-26
ZHEJIANG SCI-TECH UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the temperature control is relatively simple and effective, but the control of air humidity is still relatively difficult, especially for cultural relics, medicines, high-end jewelry, etc., the damage caused by the fluctuation of the relative humidity of the environment is greater than the damage caused by the temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] A) Sieve the powdered nanotube halloysite twice with 200 mesh and 500 mesh, take the powdery nanotube halloysite with a particle size of 200-500 mesh, weigh 1 kg, add it to 50 kg of water, and centrifuge for 30 minutes. The halloysite suspended in the pulp is filtered and dried to obtain a purified nanotube halloysite;

[0012] B) adding 700 g of the purified nanotube halloysite into 10 kg of a hydrochloric acid solution with a concentration of 10% by mass, stirring for 2 hours at a temperature of 20 to 30° C., and drying to obtain acidified nanotube halloysite;

[0013] C) Take 700 g of acidified nanotube halloysite, add it to 10 L of 5% ethanol solution by mass percentage, ultrasonically disperse it for 20 minutes, add 400 g of silane coupling agent KH-590 solution, ultrasonically disperse it for 40-60 minutes, filter and dry , to prepare organically modified nanotube halloysite;

[0014] D) Take 500 g of organically modified nanotube halloysite and add it to 10 L of...

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Abstract

The invention discloses a preparation method of a novel surface grafting modification inorganic nano humidity controlling material, comprising the steps of: A) preparing purified nanotube halloysite; B) preparing acidized nanotube halloysite; C) preparing organic modified nanotube halloysite; and D) adding the organic modified nanotube halloysite into an ethanol aqueous solution and further adding benzoyl peroxide and a hydrophilic monomer into the ethanol aqueous solution, wherein the ethanol aqueous solution is composed of one part of ethanol and 50-300 parts of water, the ratio of the organic modified nanotube halloysite to the ethanol aqueous solution is 1:10-30, the amount of the benzoyl peroxide is 0.2-3% of the amount of the organic modified nanotube halloysite, the hydrophilic monomer is acrylic acid or acrylamide whose amount is 50-300% of the amount of the organic modified nanotube halloysite; and stirring the mixture for 2-3 hours at a temperature ranged from 50 DEG C to 80 DEG C, filtering, and drying to acquire the novel surface grafting modification inorganic nano humidity controlling material. The surface grafting modification inorganic nano humidity controlling material of the invention is characterized by high humidity response speed.

Description

technical field [0001] The invention belongs to the technical field of preparation of modified inorganic materials, and in particular relates to a preparation method of a novel surface graft modified inorganic nanometer humidity control material. Background technique [0002] Air humidity is an important environmental parameter closely related to people's life and production. Humidity is of great significance to human comfort, indoor air quality, and protection of objects. At present, the temperature control is relatively simple and effective, but the control of air humidity is still relatively difficult, especially for cultural relics, medicines, high-end jewelry, etc., the damage caused by the fluctuation of the relative humidity of the environment is greater than the damage caused by the temperature. Therefore, it is more important and urgent to effectively control the humidity. Humidity-regulating materials are eco-environmental materials that do not need to consume no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/10C09C3/12C09C3/06C09K3/00C08F292/00
Inventor 曹丽芬温伟彭志勤
Owner ZHEJIANG SCI-TECH UNIV
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