| Acrylate based oil absorbing resin is a type of polymer oil-absorbing material with good application prospects,which is widely used in industrial production processes such as oil spill accident treatment and oil water separation.This paper synthesized a series of propionate ester oil-absorbing resins through suspension polymerization,and optimized the resin’s oil-absorbing performance through composite modification with different materials.The main research results are as follows:A series of oil-absorbing resins were prepared by suspension polymerization using isooctyl methacrylate(EHMA)and octadecyl methacrylate(SMA)as functional monomers,ethylene glycol dimethacrylate(EDGMA)as crosslinking agent,polyvinyl alcohol(PVA)as dispersant,2,2-azodiisobutyronitrile(AIBN)as initiator,styrene(ST)as rigid monomer,and acetone as pore forming agent.β-Cyclodextrin(β-CD)was introduced and optimized its oil absorption performance through single factor analysis.The optimal synthesis conditions were obtained as follows: m(SMA): m(EHMA)=4:1,m(ST)=4 g,wt(EDGMA)=2%,wt(PVA)=2%,wt(AIBN)=1%,m(acetone)=3 g,wt(β-CD)=3%.Under the optimal synthesis conditions,its saturated adsorption time is about 2 hours,and its adsorption process is more in line with the fitting results of the pseudo second order adsorption kinetic equation compared to the pseudo first order.The saturated oil absorption rates of diesel,kerosene,and gasoline are 15.542 g/g,13.923 g/g,and 12.274 g/g,respectively.The material has excellent oil retention properties,and there is no significant decline in oil absorption performance after three cycles of use.A one-step synthesis method was used to synthesize ethylene tar microsphere carbon,which was functionalized by acid treatment.Then,KH-570 silane coupling agent was used to hydrophobic modify it.Finally,composite preparation of microsphere carbon/acrylic ester oil absorbing resin was presented.The microsphere carbon and composite resin before and after treatment were characterized,and the oil absorption performance and oil-water separation performance of the resin were tested.The results showed that when the amount of microsphere carbon was 70 mg,the resin has the highest oil absorption rate,with oil absorption rates of 18.214 g/g,16.752 g/g,and 15.124 g/g for diesel,kerosene,and gasoline,respectively.The adsorption rate also slightly increased,and the adsorption process conforms to the fitting results of the pseudo second-order adsorption kinetics equation.After 5 cycles of use,there was no significant decrease inthe oil absorption performance,and there was a certain degress ofoil water separation feature.The fiber structure of cotton was replicated through template method to synthesize fibrous magnesium aluminum hydrotalcite.Its oxide MgAl-LDO was obtained through calcination and hydrophobically modified with KH-570 silane coupling agent.MgAl-LDO/acrylate composite oil absorption resin was synthesized by adding it to the above polymerization system.The modified materials and composite resins were characterized separately,and the effect of the amount of modified materials on the oil absorption performance of the resin and the oil absorption performance of the synthesized resin under optimal conditions were discussed.The results showed that when the amount of MgAl-LDO was 2wt%,the oil absorption rate of the resin was the highest,and the oil absorption rates of diesel,coal oil,and gasoline were 19.123 g/g,18.032g/g,and 16.552 g/g,respectively.The oil absorption rate was improved,and the adsorption process was in accordance with the pseudo second-order adsorption kinetics equation.The fitting results showed that the oil retention performance is good,and the number of cycles can reach6 runs.Its oil and water separation featureis relatively excellent. |
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