TY - JOUR
T1 - Fluorine modification on titanium dioxide particles
T2 - Improving the anti-icing performance through a very hydrophobic surface
AU - Qi, Yanli
AU - Chen, Shuangjun
AU - Zhang, Jun
N1 - Publisher Copyright:
© 2019
PY - 2019/5/15
Y1 - 2019/5/15
N2 - In this study, fluorine modification was successfully conducted on titanium dioxide (TiO 2 ) to enhance the anti-icing property through fabricating a very hydrophobic surface. TiO 2 was firstly modified with 3-methacryloxypropyl-trimethoxysilane (MPS) to introduce C[dbnd]C bonds. Then, dodecafluoroheptyl methacrylate (DFHMA) monomers were successfully grafted on the TiO 2 particles via C[dbnd]C bonds introduced by MPS. Herein, azobisisobutyronitrile (AIBN) was used as initiator to initiate the reaction. The chemical components of the TiO 2 particles were investigated by X-ray photoelectron spectroscopy (XPS). XPS analysis of fluorine-modified TiO 2 revealed that the fluorine content reached a peak value of 7.3%, while the water contact angle enhanced to a maximum value of 146°. This water contact angle value of 146° was dramatically increased by 131° in comparison with unmodified TiO 2 , indicating a very hydrophobic surface. The crystallization temperature of a water droplet on the corresponding fluorine-modified TiO 2 decreased to −19.4 °C (10.3 °C decrease in comparison with that of a water droplet on unmodified TiO 2 ). Also, the freezing delay time on the fluorine-modified TiO 2 is more than 25 min under the testing temperature of −10 °C, exhibiting excellent anti-icing property.
AB - In this study, fluorine modification was successfully conducted on titanium dioxide (TiO 2 ) to enhance the anti-icing property through fabricating a very hydrophobic surface. TiO 2 was firstly modified with 3-methacryloxypropyl-trimethoxysilane (MPS) to introduce C[dbnd]C bonds. Then, dodecafluoroheptyl methacrylate (DFHMA) monomers were successfully grafted on the TiO 2 particles via C[dbnd]C bonds introduced by MPS. Herein, azobisisobutyronitrile (AIBN) was used as initiator to initiate the reaction. The chemical components of the TiO 2 particles were investigated by X-ray photoelectron spectroscopy (XPS). XPS analysis of fluorine-modified TiO 2 revealed that the fluorine content reached a peak value of 7.3%, while the water contact angle enhanced to a maximum value of 146°. This water contact angle value of 146° was dramatically increased by 131° in comparison with unmodified TiO 2 , indicating a very hydrophobic surface. The crystallization temperature of a water droplet on the corresponding fluorine-modified TiO 2 decreased to −19.4 °C (10.3 °C decrease in comparison with that of a water droplet on unmodified TiO 2 ). Also, the freezing delay time on the fluorine-modified TiO 2 is more than 25 min under the testing temperature of −10 °C, exhibiting excellent anti-icing property.
KW - Anti-icing property
KW - Azobisisobutyronitrile
KW - Dodecafluoroheptyl methacrylate
KW - Fluorine modification
KW - Titanium dioxide
UR - http://www.scopus.com/inward/record.url?scp=85059836521&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2019.01.073
DO - 10.1016/j.apsusc.2019.01.073
M3 - 文章
AN - SCOPUS:85059836521
SN - 0169-4332
VL - 476
SP - 161
EP - 173
JO - Applied Surface Science
JF - Applied Surface Science
ER -