Synthesis and properties of high oil-absorbing resin
Lauryl acrylate is made by direct esterification of acrylic acid and lauryl alcohol,then used lauryl acrylate and butyl acrylate as monomers,N,N-methylenedi acrylamide as crosslinking agen,benzoyl peroxide as initiator,gelatin as dispersant and water as dispersion medium,the swelling high oil-absorbing resin is prepared by suspension polymerization.The best programmer is got by the orthogonal test,while its absorption dlynamics is also studied.The results show that n_(lauryl acrylate): n_(butyl acrylate)=1:2,the dosage of initiator is 3.0%,the dosage of cross linker is 2.2%,the dosage of disperse is 2.8%,the water -oil ratio is 8:1,reaction time is 5 h and reaction temperature is 80℃.At above conditions,the performance of the oil-absorbing resin is the best.The oil absorption rate of toluene reaches to 16.5 g/g,absorption rate to toluene and carbon tetrachloride are both above 10 g/g,the oil-absorbing resin basically reaches to saturation state in 3 h.At the same time the oil-keep rate reaches to more than 90%.