【作者】 郭振华； 尚德库； 梁金生； 王继忠； 王广建；

【Author】 GUO Zhen-hua, SHANG De-ku, LIANG Jing-sheng,WANG Ji-zhong, WANG Guang-jian(The School of Material Science and Technology, Hebei University of Technology, Tianjin 300130, China;The School of Environment and Resource, The East of China of Science and technology, Shanghai 200237, China;The Department of Chemistry, Huaibei Coal Mormal College, Huaibei 235000, China)

【机构】 河北工业大学材料科学与工程学院； 华东理工大学资源与环境工程学院； 淮北煤炭师范学院化学系；

【摘要】 采用物理和化学方法对天然海泡石材料进行纤维剥离和活化处理,研究了海泡石纤维活化温度对其吸湿和放湿的影响,通过海泡石纤维失重、吸放湿实验,结合对海泡石纤维特殊晶体结构、比表面积和空隙度的表征分析,综合评价海泡石纤维自调湿性能.结果表明,当活化温度200-250℃之间,加热6h时孔隙度最大,比表面积最大,自调湿性能最为理想.从晶型结构分析。当温度超过250℃时,海泡石纤维孔径继续增大,比表面积减小,吸附性减弱:当温度超过300℃时,结晶水分解,使晶体发生改变,纤维孔出现塌陷、堵塞,吸附性急剧降低.更多还原

【Abstract】 The naturai sepiolite fibers were peeled and activated with physical and chemical method. The relationship between activated temperature of sepiolite fibers and performance of absorption and release humidity was studied. The self-adjustment humidity performance of sepiolite fibers was evaluated systemically through weight loss of sepiolite, absorption and release humidity and characteristics analysis of special crystal structure, special surface and spacing degree. The results shown that the spacing degree and special surface were the best and self-adjustment humidity performance was the perfect when the activated temperature was in the range of 200-250℃ and heat time was 6 hours. When the temperature was over 250℃, from analysis of crystal structure, the pore diameters of sepiolite fibers were augmented last. At the same time, special surface and performance of absorption and release humidity vvere reduced. When the temperature was over 300℃, crystal water was decomposed and crystal structure was changed. The pores of sepiolite fibers were dented and jammed, and then performance of absorption was depressed rapidly.更多还原