摘要
二氧化碳对人体生理健康有重要影响,超过一定的体积分数会危害人体健康和生命安全。密闭空间中容易积聚二氧化碳而使其体积分数升高,必须采取措施控制二氧化碳体积分数,使其在允许的体积分数范围内。碱性物料药柱是一种宇航密闭空间用二氧化碳吸收剂。碱性物料药柱的生产工艺采用了压制成型工艺。对压制工艺的主要影响因素进行研究,有利于优化压制工艺过程。研究表明,原材料粒径目数增加,所需成型压力增大;在相同粒径和保压时间时,成型压力增加,药柱密度随之增加后变化很小;相同粒径和成型压力时,随着保压时间的增加,药柱密度随之增加后变化较小。碱性药柱压制工艺宜选择一定粒径分布的原材料和与之相匹配的成型压力及保压时间。
Carbon dioxide has an important impact on human physiological health,and carbon dioxide over a certain volume fraction will harm human health and life safety.It is easy to accumulate carbon dioxide in a confined space and increase its volume fraction,and measures must be taken to control the volume fraction of carbon dioxide to make it within the allowable volume fractionrange.Alkaline material powder column is a kind of carbon dioxide absorbent for aerospace confined space.Its production process adopts pressing molding process.The study of the main influencing factors of the pressing process is beneficial to the optimization of the pressing process.The results show that,the molding pressure increases with the increase of the size of the raw material;Under the same particle size and pressure holding time,the molding pressure increases,the density of the drug column increases with it;For the same particle size and molding pressure,with the increase of pressure holding time,the density of the drug column increases and thenchanges little.It is recommended to select the raw material with a certain particle size distribution,and the matching molding pressure and pressure holding time.
作者
周渝淞
杨凤茹
刘军
闵辉海
陈颖
冉倩
ZHOU Yu-song;YANG feng-ru;LIU Jun;MIN Hui-hai;CHEN Ying;RAN Qian(Key Laboratory of Aerospace Chemical Power Technology,Xiangyang Hubei 441003,China;Hubei Institute of Aerospace Chemotechnology,Xiangyang Hubei 441003,China;Key Laboratory of Human Factors Engineering,China Astronaut Research and Training Center,Beijing 100094,China)
出处
《当代化工》
CAS
2023年第11期2597-2601,共5页
Contemporary Chemical Industry
基金
中国航天员科研训练中心人因工程重点实验室开放基金资助项目(项目编号:SYFD062005K)。
关键词
二氧化碳吸收
药柱
压制工艺
原材料粒径
Carbon dioxide absorption
Drug column
Pressing technology
Particle size ofraw materials
