| 摘要: |
| 金属基复合吸附剂是将复合吸附剂涂覆于铝箔表面制成。选用不同粒径的硅胶作为基质制作样片，发现在实验条件下，大粒径的硅胶有利于提高铝箔表面的吸附剂涂覆量。采用优选粒径的硅胶制作样片，并对比复合吸附剂样片和单一硅胶样片的吸湿性能。在材料初始完全干燥，且吸湿条件恒定的情况下，卤素盐复合吸附剂吸湿速率更快，且最大吸湿量比硅胶高30%~45%，其中氯化锂复合吸附剂吸湿速率和最大吸湿量高于氯化钙复合吸附剂；在材料初始未进行干燥处理，且在吸湿，放湿工况周期性切换的情况下，复合吸附剂循环吸湿量比硅胶高出70%~120%，且高相对湿度的吸湿条件下，氯化钙循环吸湿量比氯化锂复合吸附剂高。 |
| 关键词: 除湿材料 金属基复合吸附剂 对比实验 动态吸湿性能 |
| DOI： |
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| 基金项目:高等学校博士学科点专项科研基金（20110073130010）资助项目。 |
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| Hygroscopic Property of Metal Matrix Composite Desiccant |
| Hu Leiming,Ge Tianshu,Jiang Yu,Wang Ruzhu |
| (Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiao Tong University) |
| Abstract: |
| he metal based composite adsorbent is made of composite adsorbent which is coated on the surface of the aluminum foil. Silica gel with different particle size is used as the matrix for production of samples. It is found that, in experimental conditions, large particle size contributes to the improvement of the coating amount on the surface of the aluminum foil. The silica gel of preferred particle size is adopted to make samples, and a comparison study of composite adsorbent and single silica gel samples is made. When the samples are completely dried and the environment condition is kept constant, compared with silica gel, the maximum moisture uptake of composite adsorbent is 30%-45% higher, within which the adsorption rate and maximum moisture uptake of lithium chloride composite adsorbent is higher than calcium chloride composite adsorbent. When the samples are not completely dried and the environment is periodically changes from adsorption condition to desorption condition, the cycle adsorption amount of composite adsorbent is 70%-120% higher than silica gel, and in high relative humidity conditions, calcium chloride composite adsorbent is higher than lithium chloride composite adsorbent. |
| Key words: dehumidification materials metal based composite adsorbent comparison experiment adsorption property |
