Study on synthesis and properties of oil swellable rubber

The acrylate copolymer with hydroxyl was prepared by emulsion polymerization process with ethyl acrylate(EA),n-lauryl acrylate(LA) and hydroxyethyl methacrylate(HEMA) as the monomer.Then plasticated acrylate copolymer was mixed with poly-glycidyl ester cross linking agent and white carbon black to prepare oil swellable rubber(OSR).The effects of the monomer ratio,contents of emulsifier and cross linking agent on oil absorption properties and mechanical properties of OSR were investigated as well as the effects of oil absorption time and different solvents on oil swellable properties.The result shows that the hardness and tensile strength decrease and the oil absorption ratio increases with the increase of LA content;The hardness,tensile strength and elongation increase and the oil absorption ratio first increases then decreases with the increase of cross linking agent content;The oil absorption ratio increases with oil absorption time,after 10 h the oil absorption ratio almost doesn’t change.