基于瞬态平面热源法的加热卷烟纸导热性能研究

Research on Thermal Conductivity of Cigarette Paper for Heated Tobacco Based on Transient Plane Source Method

关键词:  卷烟纸  加热卷烟  导热系数  瞬态平面热源法

Key Words:cigarette paper  heated tobacco  thermal conductivity coefficients  transient plane source method

摘要:为考察加热卷烟纸导热性能，使用瞬态平面热源法进行卷烟纸导热系数检测，开展实验室内方法学验证，研究卷烟纸常规物理指标、压光处理、碳酸钙添加量、原料纤维类型、防渗透处理、温度对于卷烟纸导热能力的影响。结果表明，基于瞬态平面热源法检测卷烟纸导热系数的日内精密度、日间精密度均低于4%；卷烟纸导热系数与紧度呈正相关、与透气度呈负相关；经压光处理的卷烟纸纤维接触更加紧密、间隙更小，厚度、透气度减小而紧度增大，导热能力显著增强；碳酸钙添加量越大，卷烟纸厚度、透气度增大且紧度减小，但导热能力增强；麻浆和木浆等不同纤维原料的卷烟纸导热系数存在一定差异；防渗透处理的卷烟纸（改性淀粉涂布量0~0.17%）导热系数无明显差异；22~250 ℃区间内，卷烟纸导热能力随温度的升高而增强。

Abstract:In order to investigate the thermal conductivity of cigarette paper for heated tobacco， transient plane source method was used to detect the thermal conductivity of cigarette paper， and lab methodology verification was carried out to verify and study the effects of conventional physical indexes， calendering treatment， calcium carbonate addition， fiber raw material types， anti-penetration treatment， and temperature on the thermal conductivity of cigarette paper. The results showed that the intraday and interday precision of transient plane source method for measuring the thermal conductivity coefficients of cigarette paper were both lower than 4%. The thermal conductivity coefficients of cigarette paper had a significant positive correlation with the tightness and a negative correlation with the air permeability. After calendering， the fiber contact in cigarette paper was closer and the gap was smaller， the thickness and air permeability of cigarette paper decreased， the tightness increased， and the thermal conductivity of cigarette paper was significantly enhanced. The larger amount of calcium carbonate in cigarette paper， the larger thickness and air permeability of cigarette papers and the smaller tightness， the stronger the thermal conductivity. The thermal conductivity coefficients were different for the cigarette paper prepared from different fiber raw materials such as hemp pulp and wood pulp. The thermal conductivity coefficients of cigarette paper after anti-permeation treatment （modified starch coating amount of 0~0.17%） had no obvious change. The thermal conductivity of cigarette paper increased with the increase of temperature in the range of 22~250 ℃.