Abstract: A pad body integrally molded from a thermoplastic resin foam material with high compressibility includes a foam absorbent body, an outer film layer formed on an outer portion of the foam absorbent body, and a pull string connected to the outer film layer. A tampon is also disclosed, and includes a tubular sleeve unit and the pad body. The tubular sleeve unit includes an outer tube and a push rod. The foam absorbent body and the outer film layer constitute an absorption section of the pad body. The absorption section is constrained by the outer tube in a compressed state, and is transformed to an expanded state when pushed by the push rod to move out of the receiving hole via the exit opening.

Abstract: A sponge for oil-water separation, which is prepared by reacting a polyol blend with a polyisocyanate and graphene, in the presence of a catalyst, a foaming agent and a foam stabilizer. The polyol blend includes: a first polyol component having a hydroxyl number of 33 to 60 mg KOH/g and an oxyethylene content of 50 to 80 mol %; a second polyol component having a hydroxyl number of 80 to 300 mg KOH/g and having an oxyethylene content of 50 to 80 mol %; a graft polyol component having a hydroxyl number of 20 to 40 mg KOH/g; a tetrafunctional polyol component having a hydroxyl number of 350 to 650 mg KOH/g; and glycerol.