Method for preparing organic polymer absorbent material using post treatment
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A technology of organic polymers and hygroscopic materials, applied in the field of hygroscopic materials
Active Publication Date: 2010-10-13
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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Problems solved by technology
Modification of cross-linked sodium polyacrylate with appropriate post-treatment liquid to improve its hygroscopic performance has not been reported at home and abroad
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Embodiment 1
[0015] Weigh 0.3 g of glycerol, dissolve it in 50 g of ethanol, and stir evenly; weigh 50 g of hexane, pour the hexane into the ethanol solution, and stir evenly to obtain a post-treatment liquid for the organic polymer hygroscopic material.
[0016] Weigh 200 grams of cross-linked sodium polyacrylate with a 500 ml beaker, pour the prepared organic polymer hygroscopic material post-treatment solution into the beaker, stir to mix them evenly, and place them for 12 hours; Dry within 4 hours. The obtained modified organic polymer hygroscopic material has a hygroscopic capacity of 54% at 30°C and a relative humidity of 50%, and a hygroscopic capacity of 30% before treatment.
Embodiment 2
[0018] Weigh 1 gram of ethylene glycol, dissolve it in 30 grams of ethanol, and stir evenly; weigh 70 grams of hexane, pour the hexane into the ethanol solution, and stir evenly to obtain a post-treatment liquid for organic polymer hygroscopic materials.
[0019] Weigh 200 grams of cross-linked sodium polyacrylate in a 500-ml beaker, pour the prepared organic polymer moisture-absorbing material post-treatment solution into the beaker, stir to mix them evenly, and place them for 15 hours; Dry within 6 hours. The obtained modified organic polymer hygroscopic material has a hygroscopic capacity of 57% at 30°C and a relative humidity of 50%, and a hygroscopic capacity of 30% before treatment.
Embodiment 3
[0021] Weigh 1 gram of glycerol, dissolve it in 40 grams of ethanol, and stir evenly; weigh 60 grams of hexane, pour the hexane into the ethanol solution, and stir evenly to obtain a post-treatment liquid for organic polymer hygroscopic materials.
[0022] Weigh 200 grams of cross-linked sodium polyacrylate in a 500-ml beaker, pour the prepared organic polymer moisture-absorbing material post-treatment solution into the beaker, stir to mix them evenly, and place them for 15 hours; Dry within 6 hours. The obtained modified organic polymer hygroscopic material has a hygroscopic capacity of 56% at 30°C and a relative humidity of 50%; the hygroscopic capacity before treatment is 30%.
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Abstract
The invention provides a method for preparing organic polymer moisture-absorbing materials by adopting post processing. The method comprises the steps: first, 0.3 to 1 weight portion of glycerol or glycol is dissolved in 30 to 50 weight portions of ethanol and mixed evenly; 50 to 70 weight portions of hexane are weighed, added in to the ethanol solvent and mixed evenly to obtain post processing solvent of the organic polymer moisture-absorbing material; and 200 weight portions of crosslinking sodium polyacrylate are put in a wide mouth container in which the post processing solvent of the organic polymer moisture-absorbing material is poured, mixed evenly settled for 12h to 15h and dried to obtain the organic polymer moisture-absorbing materials by adopting post processing. Under the condition of 30 DEG C and 50 percent relative humidity, the hygroscopic capacity of the organic polymer moisture-absorbing material processed by a modification solvent can be improved from about 30 percent to approximately 50 percent.
Description
technical field [0001] The invention belongs to the field of hygroscopic materials, in particular to a method for preparing organic polymer hygroscopic materials by post-treatment. Background technique [0002] Humidity not only affects people's living environment, but is also directly related to the preservation of industrial and agricultural production, article warehouses, cultural relics, and archives. Therefore, air dehumidification is already a common problem. With the development of production and the improvement of living standards, air dehumidification has developed and formed a new technology. The organic polymer moisture-absorbing material mainly composed of cross-linked sodium polyacrylate is a new type of functional polymer material that has developed rapidly in recent years. This polymer material is favored by people because of its large moisture absorption capacity and fast moisture absorption speed. However, this material still cannot meet people's needs for ...
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Patent Type & Authority Patents(China)
IPC IPC(8): C08F6/00C08F20/06
Inventor 白福臣于力温诗渺庄婷婷张春晓张志成潘振远
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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