CAJ | 학술논문

本文利用溶胶-凝胶（ sol-gel）技术并在St?ber法的基础上，制备了粒径尺寸在20 nm到90 nm可控的SiO2纳米微粒。通过控制氨水的起始浓度可较为便捷的调控粒子的尺寸。六甲基二硅氮烷（ HMDS）用做疏水改性剂，以调整纳米微粒的润湿性。改性粒子的红外光谱亦证明了HMDS的成功引入。这些疏水亲油的纳米微粒可望用于纳米液中，以增大注水量并最终提高油层采收率。
본문이용용효-응효（ sol-gel）기술병재St?ber법적기출상，제비료립경척촌재20 nm도90 nm가공적SiO2납미미립。통과공제안수적기시농도가교위편첩적조공입자적척촌。륙갑기이규담완（ HMDS）용주소수개성제，이조정납미미립적윤습성。개성입자적홍외광보역증명료HMDS적성공인입。저사소수친유적납미미립가망용우납미액중，이증대주수량병최종제고유층채수솔。
Silica nanoparticles with particle size ranged from about 20 nm to 90 nm were prepared by sol-gel technology based on St?ber method.The particle size could be controlled conveniently by varying the initial concentration of ammo -nia.Hexamethyldisilazane ( HMDS) was used to modify the wettability of these silica nanoparticles and FTIR spectral demonstrated that HMDS was successfully introduced in the surface of silica particles.The obtained hydrophobic and lipophilic nanoparticles are expected for the use of nanofluids ,which could improve the water injection and therefore enhance oil recovery.