石油化工
石油化工
석유화공
PETROCHEMICAL TECHNOLOGY
2015年
1期
71-76
,共6页
二烯丙基甲基烷基溴化铵%表面活性%热稳定性%絮凝作用
二烯丙基甲基烷基溴化銨%錶麵活性%熱穩定性%絮凝作用
이희병기갑기완기추화안%표면활성%열은정성%서응작용
diallylmethylalkyl ammonium bromide%surfactivity%thermal stability%flocculation
对二烯丙基甲基丙基溴化铵（C3）、二烯丙基甲基戊基溴化铵（C5）、二烯丙基甲基庚基溴化铵（C7）和二烯丙基甲基壬基溴化铵（C9）进行热稳定性、表面活性、水溶性和絮凝性能的测定，研究结构对其性能的影响规律。实验结果表明，C3， C5，C7，C9主要在170～300℃内发生热分解，失重（w）88.9%～90.6%；随烷基链长度的增长，临界胶束浓度和临界表面张力依次减小，分别为4.10×10-2，3.00×10-2，1.90×10-2，1.70×10-2mol/L和40.2，39.1，36.2，33.2 mN/m，而饱和吸附量和降低表面张力的效率则依次增大；C3，C5，C7，C9发泡力均较弱，水溶性好，Krafft点均低于0℃；对高岭土絮凝能力的强弱次序为：C9＞C7＞C5＞C3。
對二烯丙基甲基丙基溴化銨（C3）、二烯丙基甲基戊基溴化銨（C5）、二烯丙基甲基庚基溴化銨（C7）和二烯丙基甲基壬基溴化銨（C9）進行熱穩定性、錶麵活性、水溶性和絮凝性能的測定，研究結構對其性能的影響規律。實驗結果錶明，C3， C5，C7，C9主要在170～300℃內髮生熱分解，失重（w）88.9%～90.6%；隨烷基鏈長度的增長，臨界膠束濃度和臨界錶麵張力依次減小，分彆為4.10×10-2，3.00×10-2，1.90×10-2，1.70×10-2mol/L和40.2，39.1，36.2，33.2 mN/m，而飽和吸附量和降低錶麵張力的效率則依次增大；C3，C5，C7，C9髮泡力均較弱，水溶性好，Krafft點均低于0℃；對高嶺土絮凝能力的彊弱次序為：C9＞C7＞C5＞C3。
대이희병기갑기병기추화안（C3）、이희병기갑기무기추화안（C5）、이희병기갑기경기추화안（C7）화이희병기갑기임기추화안（C9）진행열은정성、표면활성、수용성화서응성능적측정，연구결구대기성능적영향규률。실험결과표명，C3， C5，C7，C9주요재170～300℃내발생열분해，실중（w）88.9%～90.6%；수완기련장도적증장，림계효속농도화림계표면장력의차감소，분별위4.10×10-2，3.00×10-2，1.90×10-2，1.70×10-2mol/L화40.2，39.1，36.2，33.2 mN/m，이포화흡부량화강저표면장력적효솔칙의차증대；C3，C5，C7，C9발포력균교약，수용성호，Krafft점균저우0℃；대고령토서응능력적강약차서위：C9＞C7＞C5＞C3。
The thermal stability,surfactivity,water solubility and flocculation ability of diallylmethylpropyl ammonium bromide(C3),diallylmethylpentyl ammonium bromide(C5), diallylmethylheptyl ammonium bromide(C7) and diallylmethylnonyl ammonium bromide(C9) were determined. The relationships between their structures and properties were researched systematically. The results showed that C3,C5,C7 and C9 decomposed in the temperature range of 170-300℃ with the mass loss of 88.9%-90.6%. With the increase of the alkyl chain length,their critical micelle concentration and corresponding surface tension decrease in turn and are 4.10×10-2,3.00×10-2, 1.90×10-2 and 1.70×10-2mmol/L,and 40.2,39.1,36.2 and 33.2 mN/m,respectively,but their saturated adsorption capacity and surface tensionreduction effi ciency increase in turn. C3,C5,C7 and C9 are weak in foaming power and strong in water solubility,and their krafft points are all below 0℃. Their flocculation ability to kaolin are in the order of C9>C7>C5>C3.
