【摘要】 以硬脂酸丁酯为相变材料,聚乙烯醇为分散剂,石膏板为载体,通过浸渍法和直接加入法制备相变储能石膏板。通过差示扫描量热仪分析不同相变储能石膏板的相变温度和相变焓,研究和比较了它们与普通石膏板的隔热保温性能、耐久性能和吸水性能。由直接加入法制备的含22%硬脂酸丁酯的相变储能石膏板其储能能力是普通石膏板的10倍,耐久性能优越,吸水性是普通石膏板的1/3,有利于高湿环境的使用。更多还原

【Abstract】 Phase-changing energy-storing gypsum wallboard was produced by directly incorporating butyl stearate with poly vinyl alcohol as dispersing agents or by imbibing those phase-changing materials.Differential scanning calorimeter was applied to analyze phase-changing temperature and enthalpy.Heat insulation and preservation,durability and water absorption of these gypsum wallboard were studied and compared with plain wallboards.The energy storing board by the direct incorporation of 22% butyl stearate has a ten-fold increase in capacity for the storage and discharge of heat when compared with gypsum wallboard alone,and has good durability.The water absorption test demonstrates that this product absorbs less than 1/3 as much water as plain wallboard and is,therefore,a potential candidate for use in humid environment.更多还原