中文摘要：

用辛基三甲氧基硅烷对SiO2纳米球（SN）表面进行功能化修饰,制得了具有界面活性的SiO2材料（SN-C8-n,n=0.3,0.6,0.9和1.2）,并将其作为起泡剂稳定气泡。研究了硅烷偶联剂的嫁接量、SN-C8-0.6的用量、NaCl的质量浓度及温度对气泡的影响。结果表明,当硅烷嫁接量为0.6 mmol/g,且将0.2 g SN-C8-0.6加入到2 mL质量浓度为0.05 g/m L的NaCl水溶液中时,起泡性能最好且在25℃气泡可稳定72 h以上。

英文摘要：

Interfacially active SiO2 material（ SN- C8- n,n = 0. 3,0. 6,0. 9 and 1. 2） was prepared by functional modification of SiO2 nano- particles（ SN） with n- octyltrimethoxysilane,and then the material was used as a foaming agent to stabilize the foam. Effects of dosage of coupled silane,dosage of SN- C8- 0. 6,mass concentration of NaCl and temperature on the performance of the foam were investigated. Results showed that,when the dosage of silane coupled onto the SN is 0. 6 mmol / g and 0. 2 g SN- C8- 0. 6 is added into2 mL of Na Cl solution with mass concentration of 0. 05 g / m L,best foam performance with stable time of 72 h under 25 ℃ can be resulted.