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为了对新型卷烟产品进行剖析,利用热重/差热分析研究了空气氛围下典型性碳加热卷烟“Eclipse”各组成成分的热行为,并计算了主要失重温度段的活化能。结合热失重数据和组成结构对其分解机理进行初步推断和验证。结果表明:1碳棒在356~560℃燃烧放热,失重65%,活化能为149.44 k J/mol,热重/差热分析显示含有碳酸钙成分,空气氛围下碳棒燃烧热解更完全;2200~380℃为卷烟纸主要的热解失重阶段,失重62%,主要是纤维素热解造成。其中碳酸钙含量为12%左右,金属箔为铝箔;3薄片1在191~364℃失重49%,可能是单糖、小分子物质以及纤维素热分解。薄片2在97~253℃失重51%,保润剂、水分和挥发性物质受热分解以及纤维素晶体单糖和其他一些小分子物质因热裂解。薄片1和薄片3结构和成分相似,都接近传统卷烟烟丝,薄片2含更多的单糖和水分。本研究为新型卷烟材料和热源的研发积累详实数据,为进一步研制烟叶原料加热非燃烧状态下化学成分释放和烟丝配比的实验装置和分析方法奠定基础。
In order to analyze the new type of cigarette products, the thermal behavior of the components of typical “C” -heated “cigarette” cigarette under air atmosphere was studied by TG / TG analysis and the activation energy of the main weight loss temperature section was calculated. Combined with the data of thermogravimetry and its compositional structure, the mechanism of decomposition was preliminarily inferred and verified. The results show that: 1 carbon rod exothermic combustion at 356-560 ℃, weight loss of 65%, activation energy of 149.44 kJ / mol, TG / DTA analysis shows that the composition of calcium carbonate, air atmosphere combustion pyrolysis more complete ; 2200 ~ 380 ℃ is the main stage of pyrolysis weight loss of cigarette paper, weight loss of 62%, mainly caused by cellulose pyrolysis. The content of calcium carbonate was about 12%, and the metal foil was aluminum foil. 3 Flake 1 was 49% weightless at 191 ~ 364 ℃, which might be caused by the thermal decomposition of monosaccharides, small molecules and cellulose. Flake 2 lost 51% of the weight at 97 to 253 ° C, the humectants, moisture and volatile materials were thermally decomposed and the cellulose monosaccharides and other small molecules were pyrolyzed. The structure and composition of the sheet 1 and the sheet 3 are similar to those of the conventional cigarette but the sheet 2 contains more monosaccharide and moisture. This study accumulated detailed data for the research and development of new cigarette materials and heat sources, which laid the foundation for the further development of experimental devices and analytical methods for heating the release of tobacco chemical components and the ratio of tobacco in the non-combustion state.