Porous alumina composite shaped phase change material and preparation method thereof

The invention discloses a porous alumina composite shaped phase change material and a preparation method thereof. The preparation method comprises the steps: putting Na2SO4.10H2O into a constant-temperature water bath kettle, and heating to a molten state; and then adding porous aluminum oxide according to the mass ratio of 10-30 wt%, uniformly stirring and mixing, and then putting the mixture into a vacuum drying oven for adsorption and fixation, so as to prepare the porous aluminum oxide composite shaped phase-change material. The porous alumina composite shaped phase-change material prepared by the method can effectively enhance the heat storage and release functions of a solar greenhouse wall body, thereby meeting the growth requirements of plants. 本发明公开了一种多孔氧化铝复合定型相变材料及其制备方法：取Na2SO4·10H2O置于恒温水浴锅，加热至熔融状态；然后按10～30wt％的质量比加入多孔氧化铝，搅拌混匀后放入真空干燥箱内进行吸附固定，制备得到多孔氧化铝复合定型相变材料。本发明制备的多孔氧化铝复合定型相变材料能够有效增强日光温室墙体蓄放热功能，从而满足植物生长需要。