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Inorganic modified high-molecular composite-sphere moisture-absorbing material and preparation method thereof

A hygroscopic material and inorganic modification technology, which is applied in the field of inorganic salt modified polymer composite ball hygroscopic material and its preparation, can solve the problems of low efficiency and slow moisture absorption rate, and achieve increased specific surface area, improved hygroscopic performance, and void space The effect of structural stability

Active Publication Date: 2018-05-18
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] In view of the above analysis, the present invention aims to provide an inorganic modified polymer composite ball hygroscopic material and its preparation method to solve the problems of slow hygroscopic rate and low efficiency of existing superabsorbent resins

Method used

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  • Inorganic modified high-molecular composite-sphere moisture-absorbing material and preparation method thereof
  • Inorganic modified high-molecular composite-sphere moisture-absorbing material and preparation method thereof
  • Inorganic modified high-molecular composite-sphere moisture-absorbing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Take the superabsorbent resin ball and immerse it in deionized water to swell for 1 hour to 3 times its original volume, then take out the swollen ball, filter it out and dry it, and blend it with salt at a mass ratio of 1:50, so that the salt can be evenly coated on the On the surface of the ball, the blending time should be controlled within 5 minutes; take out the above-mentioned coated particles, let it stand at room temperature and air humidity less than 70% for 1 hour, then dry at 140°C for 3 hours, peel the dried composite ball Remove the surface salt shell to obtain w1-140 inorganic salt modified polymer composite particle balls; the average particle size of the composite balls is 0.697cm, and the average density is 0.503g / cm 3 , the mass ratio of resin and salt in the composite particle ball of this embodiment is 1:3.5.

[0050] figure 1 It is the moisture absorption curve measured by w1-140 composite particle ball and pure resin ball under the conditions of con...

Embodiment 2

[0052] Take the superabsorbent resin ball and immerse it in deionized water to swell for 2 hours to 4 times the original volume, then take out the swollen ball, filter it out and dry it, and blend it with sodium chloride at a mass ratio of 1:40 to make the sodium chloride Evenly coat the surface of the pellets, and the blending time is controlled within 5 minutes; take out the above-mentioned coated particles, let them stand at room temperature and air humidity less than 70% for 1.5 hours, and then dry them at 140°C for 4 hours. The compound balls peel off the surface salt shell to obtain w2-140 inorganic salt modified polymer composite particle balls; the average particle size of the composite balls is 0.763cm, and the average density is 0.481g / cm 3 , the mass ratio of resin to sodium chloride in the composite particle ball of this embodiment is 1:4.9.

[0053] Under the conditions of constant temperature 30°C, humidity 100% and the same moisture absorption time, the moisture...

Embodiment 3

[0055] Take the superabsorbent resin ball and immerse it in deionized water to swell for 4 hours to 5 times its original volume, then take out the swollen ball, filter it out and dry it, and blend it with salt at a mass ratio of 1:30, so that the salt can be evenly coated on the On the surface of the bead, the blending time is controlled within 5 minutes; the above-mentioned coated particles are taken out, and left to stand for 2 hours at room temperature of 25°C and air humidity less than 70%, and then dried at 140°C for 3 hours, and the dried composite Peel off the salt shell on the surface of the ball to obtain w4-140 inorganic salt modified polymer composite particle ball; the average particle size of the composite ball is 0.810cm, and the average density is 0.467g / cm 3 , the mass ratio of resin and salt in the composite particle ball of this embodiment is 1:6.1.

[0056] Under the conditions of constant temperature 30°C, humidity 100% and the same moisture absorption time...

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Abstract

The invention relates to a high-molecular composite-sphere moisture-absorbing material modified by an inorganic salt. The high-molecular composite-sphere moisture-absorbing material is characterized in that a base material is super absorbent resin, the modifying material is the inorganic salt, and a mass ratio of the base material to the inorganic salt ranges from 1:3.5 to 1:9.0. The invention also discloses a preparation method of the high-molecular composite-sphere moisture-absorbing material modified by the inorganic salt. The high-molecular composite-sphere moisture-absorbing material andthe preparation method have the beneficial effects that the inorganic salt is adopted as a modifying agent, and is compounded with high molecules to form a gap structure, so that the specific surfacearea of resin spheres is enlarged, the moisture absorption property of the material is obviously improved, and the inorganic salt can be used as a loading material to further improve the property of the high-molecular composite-sphere moisture-absorbing material; the prepared composite particle sphere has the advantages that the moisture-absorbing amount and the moisture-absorbing rate in 10 hoursare increased by 7 times or more compared with those of original resin, the moisture-absorbing speed is 9 times or more of that of the original resin, and the diameter and the density of the high-molecular composite-sphere moisture-absorbing material can be adjusted and controlled.

Description

technical field [0001] The invention relates to the technical field of composite hygroscopic materials, in particular to an inorganic salt-modified polymer composite ball hygroscopic material and a preparation method thereof. Background technique [0002] Humidity is a physical quantity that indicates the dryness of the atmosphere, that is, the amount of water in the air, and it is inseparable from people's production and life. As people's requirements for production and life gradually increase, hygroscopic materials are gradually recognized by people because of their unique hygroscopic characteristics and superior hygroscopic performance. Hygroscopic materials can absorb moisture in the air and adjust air humidity, and are widely used in construction, medical treatment, environment and other fields. [0003] Organic polymer hygroscopic materials have excellent moisturizing and hygroscopic properties. They are water-based resins modified by physical and chemical methods. Th...

Claims

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Application Information

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IPC IPC(8): C08J9/224
CPCC08J9/224C08J2201/038C08J2333/02
Inventor 张生辉邱实王力张含卓陈辉欧雪梅
Owner 温州温优赫科技有限公司
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