【摘 要】
：
Two cigarette papers with the same basis weight and permeability but different pore structures were prepared.The effect of the pore structure after pyrolysis on CO yield in mainstream smoke was invest
【机 构】
：
Research and Development Center of China Tobacco Hunan Industrial Co.,Ltd.,Changsha,Hunan,China
论文部分内容阅读
Two cigarette papers with the same basis weight and permeability but different pore structures were prepared.The effect of the pore structure after pyrolysis on CO yield in mainstream smoke was investigated by heating the papers to 250 ℃.Diffusivity,permeability,pore size distribution,and pore volume of the cigarette papers before and after heating were also measured.The pore structures of the completely pyrolyzed cigarette paper in the burning cone and the incompletely pyrolyzed area near the char line were elucidated.CO yield in mainstream and sidestream smoke and the temperature distribution of the burning cone were evaluated.Diffusivity and permeability of the cigarette papers after heating were significantly higher than of the control sample after heating.The volume of pores in the cigarette paper with a size of 0.1–8.0 μm was increased,which decreased CO content in mainstream smoke.An increase in the amount of micropores facilitates CO diffusion from mainstream to sidestream smoke.
其他文献
本研究旨在探讨低温处理过程中海参品质特性变化的信号途径.新鲜海参经预处理后于37℃加热0,1/6,1/2,1,3,6,12,24 h.结果表明,随热处理时间的延长,海参形态品质明显下降.硬度和咀嚼度从3h开始急剧下降,到24h下降到几乎为0.可溶性胶原蛋白含量随时间的延长而增加.SDS-PAGE结果表明,随时间的延长,肌动蛋白和分子质量200 ku的蛋白发生了明显降解.组织蛋白酶L活力在3h时最高
面对烟草行业发展新常态,国家局提出行业企业应该践行“走出去”发展战略,在卷烟出口、境外烟叶采购、参与境外资本重组等领域认真探索.在发达国家卷烟消费市场中,美国、加拿大两国同属于北美自由贸易区,卷烟市场历史长、成熟度高、监管体系较为健全完善.两国的司法体系均为英美法系,与中国大陆法系的司法制度差异较大.行业企业受到这一法律监管体系约束,需要进行较为综合的法律研究.
The study of spatial distribution characteristics of the adsorbed compounds for absorbent materials has significant importance in understanding the behaviors of aerosols while they migrating in the ab
通过技术改进,解决ZJ19卷接机组大流量烟支输出皮带故障造成的烟支质量缺陷以及消耗较高等问题.设计一套交流伺服驱动系统替代原机的电磁离合驱动系统,实施后烟支输出皮带启动、停止动作迅速、准确,控制精度提高,达到预期目的.目前已推广至我厂所有ZJ19卷接机组.
在烟草行业铝箔纸包装工艺中,铝箔纸易出现不平整的问题,原因是铝箔纸包装机组运行过程中,铝箔纸涂油装置的涂油毛毡条为滑动式涂油,因与铝箔纸的摩擦,磨损较快,需要频繁更换,且在接触面易形成油垢,影响涂油效果,导致铝箔纸折叠不平整,给烟草行业包装机组运行效率和铝箔纸产品质量造成负面影响.新型涂油方式如气雾式喷油虽然从方式上杜绝了毛刷磨损,但费用较高;单点式喷油虽然也能解决毛刷磨损的问题,但涂油易出现不均
为了研究卷烟感官质量与烟叶石油醚提取物之间的相互关系,本研究以烤烟为研究对象,运用相关分析和广义可加模型分析方法对两者之间的关系进行了分析,结果表明:石油醚提取物对口腔感受、喉部感受和余味整体感受均呈负面效应,且达到显著水平.也即石油醚提取物与卷烟感官口腔尖刺、口腔毛刺、喉部呛刺、喉部尖刺、鼻腔感受、干燥感均呈显著负相关,但是与卷烟劲头呈显著的正相关关系.因此,在卷烟配方设计中,可以考虑选择石油醚
Much researches of Near-infrared spectroscopy modeling methods that are utilized to analyze the trace amount components,especially indirect modeling on complex system,have gained widely attraction in
为分析不同部位烟叶Brabender水分测定仪检测烟叶水分检测结果与YC/T31检测结果差异的原因,采用差热—热重分析(TG-DTA)技术对不同部位烟叶进行测试,并采用正交优化技术进行不同部位烟叶Brabender水分测定仪检测参数优化,建立参数标定模式.结果表明:在Brabender水分测定仪检测烟叶水分时,较高温度下进行烟叶烘烤,不仅烟叶的自由水、结合水被蒸发出来,部分小分子挥发性物质也被蒸出
为实现原烟烟包含水率的快速检测,引进MW-T微波水分检测仪及配套的检测系统,并采用Cgk评价法对微波水分检测仪进行效果能力评定,确定了微波水分检测仪模型建立的方法.结果表明:微波模型为M显示值=ΦP+Q=17.06Φ+12.52,R2为0.845;微波水分检测仪Cg和Cgk值分别为1.76和1.55;烟包排列方式与密度对于微波水分检测仪检验烟包含水率无影响;微波水分检测仪检验烟包含水率与行业标准烘
The filtration and retention characteristics of nicotine,phenol,benzo[a]pyrene(B[a]P),4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone(NNK),crotonaldehyde,hydrogen cyanide(HCN)and ammonia in conventiona