不同关键指标卷烟纸的热失重行为及其对卷烟主流烟气的影响研究

Study on the thermal weight loss behavior of cigarette paper with different key indicators and its influence on mainstream smoke delivery

关键词:  卷烟纸  热失重  透气度  助燃剂  主流烟气

Key Words:cigarette paper  thermal weight loss  porosity  combustion additive  mainstream smoke delivery

摘要:为研究卷烟纸的热失重行为及其对卷烟主流烟气成分释放量的影响,选取透气度、助燃剂含量和助燃剂类型为卷烟纸关键指标,对比分析不同关键指标卷烟纸的热失重行为,并对其制备的卷烟主流烟气进行评价。结果表明：①不同透气度卷烟纸的热失重行为无较大差异,提高卷烟纸透气度有利于降低卷烟主流烟气释放量；卷烟纸透气度由19.3 cm3^/(min.cm2⁾提高到180 cm3^/(min.cm2⁾,卷烟主流烟气中焦油释放量下降2.5 mg/cig.,烟碱释放量下降0.16 mg/cig.,CO释放量下降2.8 mg/cig.。②提高助燃剂含量,卷烟纸会在更低温度发生裂解而失重,有利于降低卷烟主流烟气释放量；卷烟纸助燃剂含量由0.1%提高到2.59%,卷烟主流烟气中焦油释放量下降1.6mg/cig.,烟碱释放量下降0.19 mg/cig.,CO释放量下降1.68 mg/cig.；但当助燃剂含量超过2.59%后,卷烟主流烟气释放量呈上升趋势,助燃剂含量超过2.59%后起阻燃作用。③助燃剂含量相同时,相较于添加柠檬酸钠的卷烟纸样品,添加柠檬酸钾的卷烟纸样品,其发生裂解而失重的温度更低,更有利于降低卷烟主流烟气释放量。

Abstract:To investigate the thermal weight loss behavior of cigarette paper and its influence on the cigarette mainstream smoke delivery,porosity,combustion additives content and combustion additives type are selected as key parameters of cigarette paper. The comparative analysis was conducted on the thermal weight loss behavior of cigarette papers with different key parameters,followed by an evaluation of cigarettes’ smoke delivery manufactured using those cigarette papers. Results indicated that：①The thermal weight loss of cigarette papers with different porosity levels showed no significant differences. However,higher porosity could reduce the mainstream smoke delivery. When the porosity of cigarette paper increased from 19.3 cm3^/(min.cm2⁾ to 180 cm3^/(min.cm2⁾,the release levels in mainstream smoke delivery decreased by 2.5 mg/cig. for tar,0.16 mg/cig. for nicotine and 2.8 mg/cig. for carbon monoxide(CO).②Increasing the combustion additives content in cigarette paper induced the thermal weight loss at lower temperatures,which contributed to the reduction of mainstream smoke delivery. When the combustion additives content increased from 0.1% to 2.59%,the release levels in mainstream smoke delivery could be decreased significantly: 1.6 mg/cig. for tar,0.19 mg/cig. for nicotine and 1.68 mg/cig. for CO. However,when the combustion additives content exceeded 2.59%, smoke delivery release had a continuous increase due to flame retardant effect caused by excess combustion additives.③When the combustion additives content is the same,compared with the cigarette paper with sodium citrate,cigarette paper with potassium citrate loses weight at the lower temperature,which is more conducive to reducing the smoke delivery.