Dehumidifying element and manufacturing method for the same

Abstract

A dehumidifying element includes a super absorbing polymer (SAP), and a hygroscopic base, thereby maintaining hygroscopic characteristics regardless of aging and a high humidity absorbing rate and needing a smaller amount of energy for regeneration.

1. A method of preparing a desiccant comprising the steps of:
 selecting a salt solution;   drying a super absorbing polymer (SAP);   contacting the dried SAP with the salt solution in order to perform an ionic modification of the SAP; and   drying a hydrogel generated by the contact between the SAP and the salt solution.   
     
     
       2. The method of  claim 1 , wherein the concentration of the salt solution is between 5-15 wt %. 
     
     
       3. The method of  claim 1 , wherein the salt solution comprises water as a solvent. 
     
     
       4. A method of making a dehumidifying element comprising the steps of:
 engaging a SAP to a carrier;   drying the carrier to which the SAP is engaged;   selecting a salt solution;   contacting the carrier with the salt solution in order to perform an ionic modification of the SAP; and   drying the carrier to which the SAP is engaged.   
     
     
       5. The method of  claim 4 , wherein the concentration of the salt solution is between 5-15 wt %. 
     
     
       6. The method of  claim 4 , wherein the salt solution comprises water as a solvent. 
     
     
       7. The method of  claim 4 , wherein the carrier is contacted with the salt solution by soaking or spraying the salt solution into the carrier. 
     
     
       8. The method of  claim 4 , wherein the step of contacting the carrier with the salt solution is repeated. 
     
     
       9. A dehumidifying element, comprising:
 a superabsorbing polymer (SAP);   a hygroscopic salt contacted with the SAP; and   a porous carrier configured to contain the SAP and the hygroscopic salt.   
     
     
       10. The dehumidifying element of claim 9, wherein the SAP is formed with granules having a diameter equal to or less than 1,000 μm. 
     
     
       11. The dehumidifying element of claim 9, wherein the hygroscopic salt includes one of lithium chloride, magnesium chloride, calcium chloride, and lithium bromide. 
     
     
       12. The dehumidifying element of claim 9, wherein the porous carrier includes a 3-dimensional channel through which air having humidity to be removed is guided. 
     
     
       13. The dehumidifying element of claim 12, wherein the carrier is a fiber composite of natural fiber and artificial fiber. 
     
     
       14. The dehumidifying element of claim 12, wherein the SAP is contained in the carrier while being contained in a textile, meshed textile, knitted fabric, knit, or bonded fabric. 
     
     
       15. The dehumidifying element of claim 9, wherein the SAP comprises an acryl acid cross-linked with at least one of acrylamide, starch, and cellulose. 
     
     
       16. The dehumidifying element of claim 9, wherein the SAP includes polymer in which acryl acid and acyrlamide are cross-linked. 
     
     
       17. The dehumidifying element of claim 9, wherein the SAP includes polymer in which amylum and cellulose are cross-linked.