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 hygroscopic 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,  
   wherein the SAP comprises an acryl acid cross - linked with at least one of acrylamide, starch, and cellulose.    
 
     
     
       2. The method of  claim 1 , wherein the concentration of the hygroscopic salt solution is between 5-15 wt %. 
     
     
       3. The method of  claim 1 , wherein the hygroscopic 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 hygroscopic salt solution;  
 contacting the carrier with the hygroscopic 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 hygroscopic salt solution is between 5-15 wt %. 
     
     
       6. The method of  claim 4 , wherein the hygroscopic salt solution comprises water as a solvent. 
     
     
       7. The method of  claim 4 , wherein the carrier is contacted with the hygroscopic 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 hygroscopic salt solution is repeated. 
     
     
       9. The method of  claim 4 , wherein the SAP comprises an acryl acid cross- linked with at least one of acrylamide, starch, and cellulose.    
     
     
       10. A method of preparing a desiccant comprising the steps of:
   selecting a hygroscopic salt solution;        drying a super absorbing polymer  ( SAP ) ;        contacting the dried SAP with the salt solution; and        drying a hydrogel generated by the contact between the SAP and the salt solution,        wherein a base of the SAP comprises an acryl acid cross - linked with at least one of acrylamide, starch, and cellulose.      
     
     
       11. A method of preparing a desiccant comprising the steps of:
   selecting a hygroscopic salt solution;        drying a super absorbing polymer  ( SAP ) ;        contacting the dried SAP with the salt solution; and        drying a hydrogel generated by the contact between the SAP and the salt solution,        wherein the SAP comprises an acryl acid and an acrylamide that are cross - linked, and graft polymers of at least one composition selected from the group consisting of starch, cross - linked amylum, and cellulose derivative.      
     
     
       12. A method of preparing a desiccant comprising the steps of:
   selecting a hygroscopic salt solution;        drying a super absorbing polymer  ( SAP ) ;        contacting the dried SAP with the salt solution; and        drying a hydrogel generated by the contact between the SAP and the salt solution,        wherein the SAP comprises an acryl acid and an acrylamide that are cross - linked, and a graft polymer of starch cross - linked and corresponding to amylum and cellulose derivatives.      
     
     
       13. The method of  claim 4 , wherein a base of the SAP comprises an acryl acid cross- linked with at least one of acrylamide, starch, and cellulose.    
     
     
       14. The method of  claim 4 , wherein the SAP comprises an acryl acid and an acrylamide that are cross- linked, and graft polymers of at least one composition selected from the group consisting of starch, cross - linked amylum, and cellulose derivative.    
     
     
       15. The method of  claim 4 , wherein the SAP comprises an acryl acid and an acrylamide that are cross- linked, and a graft polymer of starch cross - linked and corresponding to amylum and cellulose derivatives.