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Inorganic salt/organic macromolecular composite moisture absorption material and preparation method thereof

A technology of organic polymers and hygroscopic materials, which is applied in the field of inorganic salt/organic polymer composite hygroscopic materials and their preparation. It can solve the problems of difficult preparation of composite hygroscopic materials, complex production conditions, and limited hygroscopic capacity, and achieve good flexibility. and adaptability, excellent hygroscopic performance, and low production cost

Active Publication Date: 2018-05-22
温州温优赫科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an inorganic salt / organic polymer composite moisture-absorbing material in view of the disadvantages of a single category of moisture-absorbing materials in the prior art, such as limited moisture absorption capacity, low moisture absorption rate, difficult preparation of composite moisture-absorbing materials, complicated production conditions, and high cost. and its preparation method

Method used

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  • Inorganic salt/organic macromolecular composite moisture absorption material and preparation method thereof
  • Inorganic salt/organic macromolecular composite moisture absorption material and preparation method thereof
  • Inorganic salt/organic macromolecular composite moisture absorption material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Example 1: Mix sodium chloride and magnesium chloride uniformly to obtain a mixed salt, wherein the mass fraction of magnesium chloride is 0.5%, and the total mass of the mixed salt is 50 g. Take 5 g of sodium polyacrylate resin balls, soak them in deionized water, and swell for 6 hours. The swollen sodium polyacrylate resin balls were taken out by water filtration, put into mixed salt and blended and coated for 5 minutes, so that the mixed salt evenly covered the surface of the sodium polyacrylate resin balls to obtain a composite material. The composite material was dried and dehydrated at 120°C for 5 hours, and then the outermost layer of salt shell was removed to obtain the inorganic salt / organic polymer composite hygroscopic material W6M0.51205.

[0037] After measurement, the average particle size of the composite moisture-absorbing material W6M0.51205 is 0.830cm, the average mass is 0.1561g, and the density is 0.52g / cm 3; Among them, the mass fractions of sodium...

Embodiment 2

[0039] Embodiment 2: table salt and magnesium chloride are uniformly mixed to obtain mixed salt, wherein the mass fraction of magnesium chloride is 1%, and the total mass of mixed salt is 50g. Take 10 g of sodium polyacrylate resin balls, soak them in deionized water, and swell for 4 hours. The swollen sodium polyacrylate resin balls were taken out by water filtration, put into mixed salt and blended and coated for 4 minutes, so that the mixed salt evenly covered the surface of the sodium polyacrylate resin balls to obtain a composite material. The composite material was dried and dehydrated at 140°C for 4 hours, and then the outermost layer of salt shell was removed to obtain the inorganic salt / organic polymer composite hygroscopic material W4M11404.

[0040] It has been determined that the average particle size of the composite hygroscopic material W4M11404 is 0.790cm, the average mass is 0.1267g, and the density is 0.49g / cm 3 ; Among them, the mass fractions of sodium poly...

Embodiment 3

[0042] Example 3: Mix industrial salt and magnesium chloride uniformly to obtain mixed salt, wherein the mass fraction of magnesium chloride is 2%, and the total mass of mixed salt is 50g. Take 6 g of sodium polyacrylate resin balls, soak them in deionized water, and swell for 6 hours. The swollen sodium polyacrylate resin balls were taken out by water filtration, put into mixed salt and blended and coated for 5 minutes, so that the mixed salt evenly covered the surface of the sodium polyacrylate resin balls to obtain a composite material. The composite material is dried and dehydrated at 160°C for 4 hours, and then the outermost layer of salt shell is removed to obtain the inorganic salt / organic polymer composite hygroscopic material W6M21604.

[0043] It has been determined that the average particle size of the composite hygroscopic material W6M21604 is 0.770cm, the average mass is 0.1581g, and the density is 0.66 g / cm 3 ; Among them, the mass fractions of sodium polyacryla...

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Abstract

The invention discloses an inorganic salt / organic macromolecular composite moisture absorption material and a preparation method thereof. The inorganic salt / organic macromolecular composite moisture absorption material is prepared from the following raw materials in percentage by mass: 10 to 20 percent of organic macromolecular moisture absorption materials, 0.35 to 4.5 percent of inorganic salt moisture absorption material and 75.5 to 89.65 percent of additive, wherein the additives is one or more of sodium chloride, table salt and industrial salt. The preparation method of the inorganic salt / organic macromolecular composite moisture absorption material comprises the following steps: soaking the organic macromolecular composite moisture absorption material into deionized water and performing swelling; mixing the additives with the inorganic salt moisture absorption material and then performing co-blending and coating with the swelled organic macromolecular moisture absorption materials to obtain a composite material; drying and dehydrating the composite material and removing a surface salt shell to obtain a final product. The composite moisture absorption material disclosed by theinvention simultaneously has larger moisture absorption capacity and quicker moisture absorption velocity; the preparation method is simple and convenient to operate, has no special requirement on the equipment, is low in production cost, and is applicable to industrial large-scale production.

Description

technical field [0001] The invention relates to a composite hygroscopic material, in particular to an inorganic salt / organic polymer composite hygroscopic material and a preparation method thereof. Background technique [0002] Humidity is an important indicator to measure environmental conditions. With the development of science and technology and the improvement of human living standards, people are increasingly aware of the impact of humidity on production and life, and the demand for humidity control is becoming increasingly prominent in today's society. [0003] The concept of hygroscopic materials was first proposed by Japanese scholars in the 1980s, and it has been developed for more than 30 years. Inorganic salt hygroscopic materials and organic polymer hygroscopic materials are two common types of hygroscopic materials. Inorganic salt hygroscopic materials have a much higher moisture absorption rate than other types of hygroscopic materials, and respond quickly to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08K3/16
CPCC08K3/16C08K2003/166C08L33/02
Inventor 张生辉王力邱实欧雪梅凌意翰
Owner 温州温优赫科技有限公司
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