摘要
研究了哌嗪(PZ)及其衍生物1-(2-羟乙基)哌嗪(HEP)、N,N′-双(2-羟乙基)哌嗪(BHEP)、N,N′-双(2-羟丙基)哌嗪(HPP)四种有机胺水溶液的发泡性能。结果表明,有机胺分子结构影响其水溶液的黏度和表面张力,黏度小则发泡高度低、表面张力小则消泡时间长。PZ的发泡高度最高、消泡时间最长,含支链的哌嗪类有机胺发泡性能差别较小,发泡高度和消泡时间约为PZ的一半。随着有机胺的质量分数增加,溶液的发泡高度和消泡时间均增加;随着温度升高,发泡高度升高、消泡时间大幅减少。在HPP-HEP溶液中,随着HEP质量分数的增加,发泡高度升高、消泡时间减少。
The foaming properties of four organic amine aqueous solutions were studied in this work,including piperazine(PZ)and its derivatives of 1-(2-hydroxyethyl)piperazine(HEP),N,N′-bis(2-hydroxyethyl)piperazine(BHEP)and N,N′-bis(2-hydroxypropyl)piperazine(HPP).The experimental results showed that the viscosity and surface tension of the aqueous solution are dependent on the molecular structure of organic amines.Lower viscosity would result in the reducing of foaming height and lower surface tension would need longer defoaming time.PZ has the highest foaming height and the longest defoaming time among them,derivatives of piperazine organic amines have little difference in foaming properties,and their foaming height and defoaming time are about the half of PZ.Both the foaming height and defoaming time increased with the concentration of amines.Additionally,the foaming height increases and the defoaming time greatly decreases with the raising of temperature.With the increase of HEP content in the HPP-HEP blended amine aqueous solutions,the foaming height increases and the defoaming time decreases.
作者
郭子东
孙志豪
王路明
魏凤玉
Guo Zidong;Sun Zhihao;Wang Luming;Wei Fengyu(School of Chemistry and Chemical Engineering,Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering,Hefei University of Technology,Hefei,Anhui 230009,China)
出处
《化学世界》
CAS
CSCD
2020年第12期829-832,共4页
Chemical World
关键词
哌嗪类有机胺
发泡高度
消泡时间
混合有机胺
piperazine-based organic amine
foaming performance
defoaming performance
mixed-organic amine