Abstract: Bentonite was pre-treated and organically modified with HDTMAoBr, which was introduced into a polymerization system of acrylate monomer, crosslinker, and initiator resulting in a high oil-absorbing resin. The addition of 1.5wt % of the modified bentonite led to an oil-absorbing degree of 14.1 g/g. The optimal recipe was obtained via orthogonal experiments. The organic bentonite was well compatible with the acrylate resin, the thermal stability of the latter was improved.

Key words: organic bentonite, orthogonal test, preparation, oil-absorbing resin