纳米SiO_(2)表面改性稳定非水相泡沫的实验研究  

Study on the non-aqueous foams stabilized by the modified nano-SiO_(2)particles

作　　者：姚思齐 燕永利[1] 张随望[2,3] 陈钰[2,3] 贺炳成 Siqi Yao;Yongli Yan;Suiwang Zhang;Yu Chen;Bingcheng He(College of Chemistry&Chemical Engineering,Xi’an Shiyou University,Xi’an,Shaanxi 710065,China;Research Institute of Oil&Gas Technology,Changqing Oilfield Company,PetroChina,Xi’an,Shaanxi 710021,China;National Engineering Laboratory for Exploration and Development of Low-Permeability Oil&Gas Fields,Xi’an,Shaanxi 710021,China;The 10th Oil Production Factory,Changqing Oilfield Branch Company,PetroChina,Qingcheng,Gansu 745100,China)

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]中国石油长庆油田分公司油气工艺研究院,陕西西安710021 [3]低渗透油气田勘探开发国家工程实验室,陕西西安710021 [4]中国石油天然气股份有限公司长庆油田分公司采油十厂采油工艺研究所,甘肃庆城745100

出　　处：《日用化学工业（中英文）》2024年第8期903-910,共8页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金资助项目(NO 22272126,21773183);陕西省自然科学基金资助项目(2018JM2011);西安石油大学研究生创新与实践能力培养项目(YCS22214217)。

摘　　要：非水相泡沫在石油开采、功能材料、日用化工等领域有着广泛的应用,非水相泡沫的研究进展影响着相关行业的发展。然而,由于其自身的界面张力和介电常数较低,致使发泡难度较大。为解决非水相体系发泡困难的问题,文章通过制备纳米SiO_(2)颗粒,经TEM,FT-IR及XRD对颗粒进行表征,采用3-缩水甘油氧基丙基三甲氧基硅烷(GPTMS)对纳米SiO_(2)颗粒润湿性进行调控,研究纳米SiO_(2)颗粒对非水相溶剂发泡性能的影响。结果表明:经GPTMS改性后,颗粒的接触角范围扩大至34.7°~116°之间;且能有效降低不同溶剂的表面张力并增加溶剂体系的黏度;当颗粒质量分数为7%,粒径为10 nm时,非水相产生的泡沫体积随纳米SiO_(2)颗粒接触角的增大呈现先增后减的趋势,泡沫稳定性随纳米SiO_(2)颗粒接触角的增大呈现先增强后减弱的趋势。在甲酰胺体系中,当颗粒接触角为92.3°时,泡沫体积最高可达到12 mL,泡沫稳定时长可达63 d;在乙酸苄酯体系中,当颗粒接触角为79.5°时,泡沫体积最高可达到7 mL,泡沫稳定时长可达47 d;在癸烷体系中,当颗粒接触角为60.3°时,泡沫体积最高可达到4 mL,泡沫稳定时长可达8 d。Non-aqueous foams have a wide range of applications in petroleum exploitation,functional materials,daily chemical industry,etc.However,the low interfacial tension and low dielectric constant of non-aqueous solvents lead to the difficulty in forming stable foams.Therefore,to solve the difficulty in foaming for non-aqueous systems,nano-SiO_(2)particles were prepared and characterized by TEM,FT-IR and XRD.Then the wettability of nano-SiO_(2)particles was modified with 3-glycidyloxypropyl trimethoxysilane(GPTMS),and the effects of nano-SiO_(2)particles of different wettability on the foaming performance of non-aqueous solvents were studied.The results showed that the contact angle of the particles could be regulated in the range from 34.7°to 116°by GPTMS modification.The surface tension of different solvents could be effectively reduced and the viscosity of the solvent systems was increased.When the mass fraction of particles was 7%and the particle size was 10 nm,the foam volume for non-aqueous solvents first increased and then decreased with the increase of the contact angle of nano-SiO_(2)particles,and the foam stability also first increased and then decreased with the increase of the contact angle of nano-SiO_(2)particles.In the formamide system,when the contact angle of particles was 92.3°,the foam volume could reach up to 12 mL,and the foam stability could reach 63 days.In the benzyl acetate system,when the contact angle of particles was 79.5°,the foam volume could reach up to 7 mL,and the foam stability could reach 47 days.In the decane system,when the contact angle of particles was 60.3°,the foam volume could reach up to 4 mL,and the foam stability could reach 8 days.

关 键 词：非水相泡沫 纳米SiO_(2)颗粒 润湿性 发泡性能 稳定性 

分 类 号：O648.2[理学—物理化学]