Efficient natural rubber latex foam coated by rGO modified high density polyethylene for oil-water separation and electromagnetic shielding performance

•Superhydrophobic rGO@HDPE aerogel coated NRLF as an EMI shielding material.•The coated modified NRLF showed static water contact angles reaches > 150°.•rGO has good dispersibility on the sponge surface through TIPS.•The microstructures of modified NRLF displays more conductive network structure.•The rGO@HDPE aerogel coated NRLF with 2 wt% rGO has reached EMI SE value of 24 dB.