OLEOPHOBIC AND HYDROPHOBIC FEATURE EXPERIMENTS OF FLUORINATED HIGH DENSITY POLYETHYLENE  

作　　者：杨宏伟 魏贤勇 费逸伟 孙世安 李晓越 

机构地区：[1]Key Laboratory of Coal Processing and Efficient Utilization,China University of Mining & Technology [2]Department of Aviation Oil and Material,Air Force Logistics Institute

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2013年第4期397-403,共7页南京航空航天大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China for Innovative Research Group(50921002);the Quartermaster Materials and Fuel Ministry of PLA Air Force Logistics Department(BKJ10C043);the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：The surface performances of directly fluorinated high density polyethylene （HDPE） are studied with Fourier transform infrared （FT-IR） spectra, scanning electron microscopy （SEM） and contact angle （CA） system. The SEM images show that there is a three-layer structure called the reaction, virgin and boundary layer structure. The depth of fluorinated layer is 5.75 ~m with 1 h fluorination time and 7.86 b^m with 2 h. The depths are 5.46 /~m and 5.07 /~m when fluorine density is 2G and 1~/0, respectively. CA indicates that the HDPE surface property becomes more hydrophobic with the increasing water contact angle from 78.5~ to 104.5~. Oleophobic and hydrophobic features of HDPE are identified by comparison of mass change experiments. It is shown that the in- crement rate of fluorinated HDPE is much lower than that of un-fluorinated HDPE filled in neither distilled water nor jet fuel.The surface performances of directly fluorinated high density polyethylene(HDPE)are studied with Fourier transform infrared(FT-IR)spectra,scanning electron microscopy(SEM)and contact angle(CA)system. The SEM images show that there is a three-layer structure called the reaction,virgin and boundary layer structure. The depth of fluorinated layer is 5.75μm with 1h fluorination time and 7.86μm with 2h.The depths are 5.46μm and 5.07μm when fluorine density is 2% and 1%,respectively.CA indicates that the HDPE surface property becomes more hydrophobic with the increasing water contact angle from 78.5° to 104.5°.Oleophobic and hydrophobic features of HDPE are identified by comparison of mass change experiments.It is shown that the increment rate of fluorinated HDPE is much lower than that of un-fluorinated HDPE filled in neither distilled water nor jet fuel.

关 键 词：high density polyethylene contact angle surface property oleophobic and hydrophobic features 

分 类 号：V2[航空宇航科学技术]