摘要
为实时检测电子烟雾化剂雾化过程的温度变化,利用配备超细热电偶的温度检测系统,建立了检测电子烟雾化器核心区温度的方法,考察了雾化器功率、雾化剂组成、雾化时长等因素对雾化温度的影响,并采用同步热分析(TG-DSC)技术研究了雾化剂组成对雾化温度的影响机理。结果表明:(1)该温度检测系统可以实时准确检测电子烟雾化剂雾化过程的温度变化,相对标准偏差(RSD)为0.002%。(2)电热丝和吸油棉的升温速率由雾化器功率决定,而所能达到的平衡稳定段雾化温度由雾化剂的组成决定,吸油棉的温度低于电热丝的温度,雾化过程主要发生于电热丝表面及附近区域。(3)雾化剂的雾化温度介于丙二醇和丙三醇沸点之间,丙三醇含量(质量分数)低于20%的雾化剂具有单一沸点,且在雾化温度平衡稳定段保持较稳定的雾化温度;当丙三醇含量为30%~60%时,雾化剂具有两个沸点,且在平衡稳定段雾化温度缓慢升高。
In order to detect the real-time temperature of e-cigarette liquids during vaporization, a detection method was established by adopting a temperature detection system consisted of superfine thermocouples. The effects of atomizer power, carrier liquid composition and vaporization duration on vaporization temperature were investigated. Synchronous thermal analysis by TG-DSC technology was used to analyze the effect of carrier liquid composition on vaporization temperature. The results showed that： 1） The temperature detection system could detect in real time the temperature variation of a carrier liquid during vaporization process with a relative standard deviation（RSD） of 0.002%. 2） The heating rates of electric heating coil and wicking cotton were determined by the atomizer power, while the composition of the carrier liquid determined vaporization temperature at steady-state stage. The temperature of wicking cotton was lower than that of electric heating coil,vaporization process mainly occurred on the surface and vicinity of the coil. 3） Vaporization temperature was in the boiling point range of propylene glycol and glycerin. When glycerol concentration in the carrier liquid was less than 20%, the carrier liquid had a single boiling point, and vaporization temperature remained stable at steady-state stage. When the glycerol concentration was between 30% and 60%, the liquid had two boiling points, and vaporization temperature rose slowly at steady-state stage.
作者
谢国勇
胡建
杜文
易建华
谭新良
于宏
XIE Guoyong;HU Jian;DU Wen;YI Jianhua;TAN Xinliang;YU Hong(Technology Center,China Tobacco Hunan Industrial Co.,Ltd.,Changsha 410007,China;College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,China)
出处
《烟草科技》
EI
CAS
CSCD
北大核心
2018年第7期40-45,共6页
Tobacco Science & Technology
基金
湖南中烟工业有限责任公司新型烟草制品研究重大专项项目"新型烟草烟具研究及市场分析"(KY5016JC0012)
关键词
电子烟
雾化剂
雾化温度
热电偶
温度特征
E-cigarette
Carrier liquid
Vaporization temperature
Thermocouple
Temperature characteristic
