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Preparation method of safe and efficient humidity-controlling material

A moisture-conditioning material and high-efficiency technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of easy outflow of liquefied hydrated water, insufficient moisture absorption capacity of moisture-conditioning materials, etc., and achieve excellent moisture absorption capacity and large loading capacity. , the effect of large load

Active Publication Date: 2021-06-18
江苏河海乾诚智能科技有限公司 +1
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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 solve the deficiency of the humidity control material in the prior art, that is, the moisture absorption capacity of the humidity control material is not enough, and a large amount of liquefied hydration water produced after moisture absorption is easy to In view of the problem of outflow, a preparation method of a safe and efficient humidity-conditioning material is proposed; the polyester hollow fiber felt with holes on the surface of the hollow fiber and carboxylated inner and outer surfaces of the hollow fiber is loaded with inorganic, Organic high-efficiency moisture absorbent, and then add cross-linking agent polyol to obtain an integrated cross-linked gel network of carboxylated polyester fiber / sodium polyacrylate / polyol

Method used

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  • Preparation method of safe and efficient humidity-controlling material

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The polyester hollow fiber mat containing 10% EHDPET was treated at 100° C. for 2 hours with 10 wt % sodium hydroxide aqueous solution, and washed with water. Prepare an aqueous solution containing 45wt% lithium chloride, 10wt% low molecular weight sodium polyacrylate and 1wt% glycerin, then add hydrochloric acid to convert 15% sodium carboxylate in the system into carboxylic acid. Immerse the treated polyester hollow fiber felt in the above aqueous solution for 10 minutes, take it out and dry it at 110°C for 8 hours, and esterification reaction occurs simultaneously at the drying temperature to form carboxylated polyester fiber / sodium polyacrylate / multi-component An integrated cross-linked gel network of alcohols.

[0032] Weigh the humidity-conditioning material prepared by the above-mentioned process, and calculate the loading capacity of the polyester hollow fiber felt to the hygroscopic agent; then place the humidity-conditioning material in a closed environment wi...

Embodiment 2

[0034] The polyester hollow fiber mat containing 10% EHDPET was treated at 100° C. for 2 hours with 10 wt % sodium hydroxide aqueous solution, and washed with water. Prepare an aqueous solution containing 45wt% lithium chloride, 10wt% low molecular weight sodium polyacrylate and 2wt% ethylene glycol, and then add hydrochloric acid to convert 15% of sodium carboxylate in the system into carboxylic acid. Immerse the treated polyester hollow fiber mat in the above aqueous solution for 10 minutes, take it out and dry it at 110°C for 8 hours, and esterification reaction occurs simultaneously at the drying temperature to form carboxylated polyester fiber / sodium polyacrylate / multi-component An integrated cross-linked gel network of alcohols. The performance test method of the humidity-conditioning material is shown in Example 1, and the results are shown in Table 1.

Embodiment 3

[0036]The polyester hollow fiber mat containing 15% EHDPET was treated at 100° C. for 2 hours with 10 wt % sodium hydroxide aqueous solution, and washed with water. Prepare an aqueous solution containing 45wt% lithium chloride, 10wt% low molecular weight sodium polyacrylate and 2wt% ethylene glycol, and then add hydrochloric acid to convert 15% of sodium carboxylate in the system into carboxylic acid. Immerse the treated polyester hollow fiber felt in the above aqueous solution for 10 minutes, take it out and dry it at 110°C for 8 hours, and esterification reaction occurs simultaneously at the drying temperature to form carboxylated polyester fiber / sodium polyacrylate / multi-component An integrated cross-linked gel network of alcohols. The performance test method of the humidity-conditioning material is shown in Example 1, and the results are shown in Table 1.

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Abstract

The invention belongs to the technical field of preparation methods of humidity-controlling materials, particularly relates to a preparation method of a safe and efficient humidity-controlling material, and solves the problems that humidity-controlling materials in the prior art are insufficient in moisture absorption capacity and a large amount of liquefied hydrated water generated after moisture absorption is easy to flow out. The preparation method comprises the following steps: firstly, treating polyester hollow fiber felt with a sodium hydroxide solution; carrying out surface trepanning treatment on hollow fibers and generating sodium carboxylate groups on the inner and outer surfaces of the hollow fibers; then soaking the treated polyester hollow fiber felt in an aqueous solution of an inorganic moisture absorbent, an organic moisture absorbent, a neutralizer and a cross-linking agent; taking out the impregnated polyester hollow fiber felt, heating and drying, and meanwhile, forming an integrated cross-linked gel network of carboxylated polyester fiber / sodium polyacrylate / polyhydric alcohol through esterification reaction. The humidity-controlling material has high moisture absorption capability, can inhibit the outflow of electrolyte-rich moisture, and avoids pollution or corrosion of the surrounding environment.

Description

technical field [0001] The present invention relates to the technical field of preparation methods of humidity control materials, in particular to a preparation method of safe and efficient humidity control materials; more specifically, to a preparation method of safe and high efficiency humidity control materials with high moisture absorption capacity and water retention capacity. Background technique [0002] Air humidity directly affects the production and life of human society. Among the existing air humidity adjustment methods, the use of solid hygroscopic materials for dehumidification does not require special equipment. It has a wide range of applications and low energy consumption. It has gradually developed into an important dehumidification technology. [0003] Inorganic salt hygroscopic agents have strong hygroscopic ability, and are important and commonly used hygroscopic materials, such as lithium chloride, calcium chloride, lithium bromide, etc. Inorganic salt ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28
CPCB01D53/28B01D2258/06B01D2257/80
Inventor 沈银峰
Owner 江苏河海乾诚智能科技有限公司
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