加热非燃烧烟草薄片热导性能的提升研究

Study on Improving Thermal Conductivity of Non-combustion Tobacco Sheet

关键词:  烟草薄片  石墨烯  碳纤维  热扩散系数

Key Words:tobacco sheet  graphene  carbon fiber  thermal diffusion coefficient

摘要:通过辊压法在烟草薄片中分别添加导热材料石墨烯和碳纤维，以改善烟草薄片的传热性能。研究提升了专用烟草薄片的热传导性能及烟草成分的热释放，从而有效提升加热非燃烧烟草薄片的利用率。利用热重（TG）、拉曼光谱（Raman spectra）、傅里叶变换红外光谱仪（FT-IR）、扫描电子显微镜（SEM）和热扩散系数测量等方法对烟草薄片进行表征，同时结合感官质量评价。结果表明，导热材料有效分布在烟草薄片中，且不影响烟草薄片的感官品质。此外，与碳纤维烟草薄片相比，石墨烯烟草薄片的热稳定性和导热性能更佳，且与植物纤维有更好的相容性。与未添加石墨烯的空白样品相比，石墨烯用量为5%时，烟草薄片的残余质量最低，为47.74%；烟草薄片的热扩散系数提升了58.77%；基于石墨烯的加热非燃烧卷烟的传热速率提升了22.32%。

Abstract:By the rolling method， adding thermal conductive materials （graphene and carbon fiber） to a tobacco sheet could improve the heat transfer performance of the sheet.The study improved the thermal conductivity of the dedicated tobacco sheet and the heat release of tobacco components， so as to effectively improve the utilization of the heated non-combustion tobacco sheet. The sheet was characterized by TG， Raman spectroscopy， FT-IR， SEM， and thermal diffusion coefficient measurement. The results showed that the heat-conducting material was effectively distributed in the tobacco sheet， and did not affect the sensory quality of the slice. In addition， compared with carbon fiber tobacco flakes， graphene tobacco flakes had better thermal stability and thermal conductivity and had better compatibility with plant fibers.Compared with the control sample， when the content of graphene was 5%， the residual of the sheet was the lowest， which was 47.74%.The thermal conductivity and thermal diffusivity of the sheet increased by 58.77% and the heating rate of non-combustion cigarettes based on this material increased by 22.32%.