PREPARATION OF HEAT INSULATION PAPER BASED ON FIBER LOADING BY IN-SITU DEPOSITION OF ALUMINIUM SILICATE
Heat insulation paper plays an important role in both industries and our daily lives. At present, the majority of heat insulation paper products is manufactured using aluminum silicate fibers as the base raw materials. However, paper strength is often limited to a certain degree as no bonding force exists among the aluminum silicate fibers. Fiber loading by in-situ deposition of aluminum silicate can possibly be useful in the development of heat insulation paper, and the excess inorganic materials on the fiber surfaces can be easily removed, thus conferring specifically desired characteristics to the paper such as relatively high strength. In this work, aluminum sulfate and sodium silicate were used as the base materials for in-situ deposition of aluminum silicate, and the experimental conditions for in-situ deposition and heat-insulating property of paper were studied. The preliminarily optimum conditions for in-situ deposition of aluminum silicate were obtained by the orthogonal method. High level of fiber loading of 29.95％ was achieved when aluminum sulfate dosage, mixing time, reaction time, reaction temperature, and mixing speed were found to be 0.1mol/L, 50 min, 40 min, 70℃, and 300 r/min, respectively, while the strength properties of heat insulation paper were very close to that of the control sample. Fiber loading by in-situ deposition of aluminum silicate was found to be much contributable to the heat-insulating property of paper. When the temperature of heating surface of the paper samples was controlled at 100℃，the equilibrium temperature of control sample was 53℃, while the corresponding temperature of heat insulation paper was only 36℃. SEM-EDAX, FT-IR, XPS and XRD analysis confirmed the deposition of aluminum silicate in the fiber lumens.
in-situ deposition fiber loading Aluminum silicate heat insulation paper
Liu Yan Yu Gang Mo Jicheng
Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
国际会议
广州
英文
1483-1486
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）