有机硅树枝状表面活性剂的制备及性能  

Preparation and properties of a dendritic silicone surfactants

作　　者：顾忠飞 陈洪龄 GU Zhongfei;CHEN Hongling(College of Chemical Engineering,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]南京工业大学化工学院,江苏南京211800

出　　处：《精细石油化工进展》2024年第4期47-53,共7页Advances in Fine Petrochemicals

摘　　要：以季戊四醇(PETP)、烯丙基缩水甘油醚(AGE)、七甲基三硅氧烷(MDHM)为原料,通过环氧开环和硅氢加成反应,合成出一种树枝状非离子表面活性剂AGE-PETP-MDHM。通过傅里叶红外光谱仪(FT-IR)对产物进行结构表征,并在25℃下测试产物的表面张力、铺展性能、乳化性能、消抑泡性能、增溶性能及其对聚醚表面活性剂溶液流变性的影响。结果表明:AGE-PETP-MDHM的临界胶束浓度(cmc)为1.08×10^(-4)mol/L,可降低水的最低表面张力至22.67 mN/m,接触角在石蜡表面由53.81°降至43.81°,乳化性能较差,具有不错的消抑泡性能和增溶能力,对聚醚表面活性剂溶液的降黏率可达到35.45%。A dendritic silicone nonionic surfactant AGE-PETP-MDHM was prepared from pentaerythritol(PETP),allyl glycidyl ether(AGE)and heptamethyltrisiloxane(MDHM)by epoxy ring opening and hydrosi⁃lylation reaction.The structure of the product was characterized by Fourier infrared spectrometer(FT-IR).The surface tension,spreading properties,emulsification properties,defoaming properties,solubilization proper⁃ties and rheological effects on polyether surfactant solution were investigated at 25°C.Results showed that the critical micelle concentration(cmc)of AGE-PETP-MDHM was 1.08×10^(-4) mol/L,the minimum surface tension of water could be reduced to 22.67 mN/m,the contact angle on the paraffin surface was reduced from 53.81°to 43.81°,the emulsification performance was poor,but it had good defoaming performance and solubilization ability,and the viscosity reduction rate of polyether surfactant solution could reach 35.45%.

关 键 词：季戊四醇 烯丙基缩水甘油醚 七甲基三硅氧烷 环氧开环 硅氢加成 

分 类 号：TQ423[化学工程]