| With the development of aviation and automobile industry, people's demand for the engines of car and aircraft have become increasingly high, and as the "blood" of engine - oil and hydraulic oil plays an important role in the efficiency of engine.the risk of water in the oil can be summarized: corrosion and block holes .The water in oil offen make the precipitate becoming into acid.which will increase the corrosion of the fuel injection system and the engine.and the water promote the growth of microorganisms.which is the resion to produce precipitates. It's worth noting that the above-mentioned phenomenon offen taken place when the water is very less in the oil.so,it is very important to separate water from oil. my paper provided the fluorine-containing acrylic resin with good hydro-oil-phobicity and adhesion, mechanical properties, and then improved the oilphilic of resion and prepared the filter coating with oil and water separation function which applied to the oil filter achieved a better water separation efficiency.Firstly synthesized fluorinated acrylic resin and determined the choice of monomer, used MMA BA HEMA and FMA as the monomers. The ratio MMA/BA:4:6(w/w),AIBN as the initiator and the dosage is 1.5%(w/w).and add in two times.rection temperature is 85℃,the dosage of HEMA is 15%(w/w).and the dosage of FMA is 3%(w/w),add in one time at the later period. received copolymer with low viscosity, low molecular weight. explored the coating technique of the resin and determine the conditions of coating procedure: the ratio of curing agent content- NCO and hydroxyl content is 1.1:1(mol/mol), curing temperature:110℃, curing time:2h and the coating concentration when coating on stainless steel filter is 3%(w/w).the cured film has good adhesion:0 grade , good solvent resistance :there is no change under the condition of Immersing in 10%(w/w) HCl和10%(w/w) NaOH for 7 days.and it is als o that Immerse in oil and hydraulic oil for 1 month. and good resistance to high and low temperature performance:there is no change at the temperature between -55℃and 300℃. The resion can meet the mechanical properties required which is used in the oil and water separation industries .Improve the oilphilic of the fluorinated acrylic resin through the introduction of long-chain alkanes acrylate. discussed the length of long-chain alkanes acrylate, add methods, and the ratio of fluorine monomers and long-chain alkanes acrylate,the length of fluorine monomer chain to the oilphilic .and determined to use SMA and FMA at the ratio of 7:3 (w/w),and the adding volume:15%(w/w).the contact angele with coal oil decreased obviously. and the contact angele with hydraulic oil decrease only a little.Finally, through the experiment of oil-water separation, the efficiency of resin oil and water separation been tested , discussed the initial water content in oil .the two different processes on improve oilphilic. Compare our sample with mature product in oil-water separation efficiency. The results showed that the fluorinated acrylic resin which been treated by oilphilic has good water separation efficiency, but there still some distance compare with merchandise .
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