Abstract: The organic silicone quaternary ammonium salt with multi-heads was synthesized using hexamethylenetetramine and γ-chloropropyltrimethoxysilane as raw materials. The target product was characterized by FTIR and NMR. Furthermore，process optimization experiments was carried out. Reaction rate and yield were improved by microwave technology and reaction yield was up to 95.6% within 8 hours. In addition，the major performance of the target product was investigated，such as fusion point，surface tension，critical micelle concentration and bactericidal property. The product contained three quaternary ammonium groups per molecule on average. Fusion point of the above organosilicon quaternary ammonium salt ranged from 86.2 ℃ to 88.6 ℃. γCMC of the product was 46.30 mN/m. CMC was 0.19 g/L，and the bacteriostatic zone diameter for escherichia coli could be up to 27.4 cm.

Key words: multi-heads, organic silicone quaternary ammonium salt, synthesis, properties

摘要： 以六亚甲基四胺和γ-氯丙基三甲氧基硅烷为原料，研究了一种多头基有机硅季铵盐的合成，用FTIR、NMR对目标产物进行了表征，对其合成工艺进行了优化，并使用微波技术加速了反应速率、提高反应产率，仅用8 h就使产率达到95.6%。另外，对其熔点、表面张力、临界胶束浓度和杀菌性能进行了考察。实验结果表明，该产物的每个分子上平均含有3个季铵盐基团，熔点为116.3～118.8 ℃，γCMC为46.30 mN/m，临界胶束浓度CMC 为0.19 g/L，对大肠杆菌的抑菌环直径可达27.4 cm。

关键词: 多头基, 有机硅季铵盐, 合成, 性能