γ-Al_2O_3法制备复合多孔树脂及其调湿与甲醛吸附性能  

Preparation of Composite Porous Resin by γ-Al_2O_3 Foaming and Its Characterization of Humidity-controlling and Formaldehyde Adsorption

作　　者：杨海亮[1,2] 彭志勤[1,2] 张敬[2] 曹晓晔[2] 陈彩惠[2] 周旸 赵丰 胡智文[1,2] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [2]浙江理工大学文物保护材料研究室,杭州310018 [3]中国丝绸博物馆,杭州310002

出　　处：《高等学校化学学报》2011年第4期978-983,共6页Chemical Journal of Chinese Universities

基　　金：长江学者和创新团队发展计划(批准号:IRT0654);浙江省文物保护基金资助

摘　　要：利用氢氧化铝高温分解产生活性氧化铝并释放水蒸气的致孔途径制备复合多孔树脂.通过TG、SEM、FTIR、XRD和氮气吸附等手段表征了树脂的形貌和结构特征,分别测试了复合多孔树脂在高湿和低湿环境的调湿性能及饱和湿含量,讨论了多孔树脂在不同温度下的调湿性能和在25℃时对微量甲醛的吸附性能.结果表明,该致孔方法能有效地使树脂内部形成多孔结构.复合多孔树脂具有良好的调湿和甲醛吸附性能.在制备过程中,通过控制树脂内部的孔参数,可使材料在4 h内将环境相对湿度调控在50%～60%的范围之内,且不受温度变化的影响,甲醛吸附量为2.50×105 mol/(L.g).As intelligent humidity control materials,porous resins have more advantages,such as high moisture content and fast absorption-desorption rate than traditional porous silica gels.A composite porous resin was prepared via a foaming method in this study,in which aluminum hydroxide was decomposed into activated alumina and water vapor was released simultaneously at high temperature.The morphology and pore structure of the composite porous resins were characterized by thermogravimetry（TG）,scanning electron microscopy（SEM）,X-ray diffractomer（XRD）,Fourier transform infrared spectroscopy（FTIR） and nitrogen adsorption.Humidity control capability and saturation moisture content of the composite porous resins were tested under high humidity and low humidity conditions.Humidity control performance at various temperatures and trace formaldehyde adsorption ability at 25 ℃ of the composite porous resins were investigated particularly.The results show that porous structure is successfully formed in the resin.The composite porous resin has good performances on humidity control and formaldehyde adsorption.Through controlling the pore parameters of the resin by changing preparation processes,we could adjust the humidity-controlling range of the resin between 50% and 60% relative humidity（RH） in 4 h free from the influence of temperature,and the formaldehyde adsorption content of the resin was about 2.50×105 mol/（L／5g）.The composite porous resin could be applied as intelligent humidity control material and create a clean micro-environment for cultural relic conservation.

关 键 词：复合多孔树脂 调湿 甲醛吸附 智能材料 

分 类 号：O636[理学—高分子化学]