Effect of Nano-SiO2 Particles on Oil-water Separation Performance of Filter Paper [纳米SiO2颗粒对油水 分离滤纸性能的影响]

作者：Chen H.; Si J.; Zhou X.^*

来源：China Pulp and Paper, 2019, 38(2): 7-15.

DOI：10.11980/j.issn.0254-508X.2019.02.002

• Filter paper
• Nano-SiO2 particle
• Oil-water separation
• Static contact angle

In this study, tetraethyl orthosilicate(TEOS) and methyltriethoxysilane(MTES) were used as precursors to prepare nano-SiO2 with hydrophobic group-CH3 on the surface by sol-gel method. The prepared nano-SiO2 and the cationic styrene-acrylic emulsion were blended and impregnate filter paper to prepare an oil-water separation filter paper. Different nano-SiO2 particles were prepared by changing the ratio of TEOS and MTES. The effects of different nano-SiO2 particles on the surface microstructure, static contact angle and oil-water separation efficiency of oil-water separation filter paper were investigated. The results showed that when the nano-SiO2 particles prepared based on TEOS:MTES ratio of 4:3 dosage was 1.0%, the static contact angle of the oil-water separation filter paper to water reached 148.4°, the mixture of hexadecane and water separation efficiency reached 99.8%, compared to the emulsion-impregnated filters the permeability of the oil-water separation filter paper decreased by 7.7%.

• 单位
  华南理工大学; 制浆造纸工程国家重点实验室