Hydrophobic swelling polyurethane foam and preparation method and use thereof

Abstract

The invention relates to hydrophobic swelling polyurethane foam and a preparation method and use thereof, and belongs to the field of high-molecular-weight materials. In the invention, the high-hydrophobicity swelling polyurethane foam is prepared by introducing a polysiloxane chain into unsaturated hydroxyl-terminated polybutadiene (unsaturated hydroxyl-terminated polyisoprene) on the basis of the high hydrophobicity of silicon rubber and the high swelling performance of the silicon rubber in organic materials and petroleum products and reacting with isocyanate to prepare the high-hydrophobicity swelling polyurethane foam. In the invention, the polyurethane foam is prepared by mixing the isocyanate, polyol, a catalyst, a foam stabilizer, a foaming agent, a pore-forming agent and a flame retardant, foaming and aging; the prepared polyurethane foam fills pores and swells a substrate while absorbing leaked liquid organic matters and petroleum products; and thus, the leaked liquid organic matter and petroleum product absorption power of the polyurethane foam is improved, and the polyurethane foam can selectively absorb oil and organic matters from liquid pollutants leaking onto water surface so as to separate oil from water.

Description

technical field [0001] The invention relates to a polyurethane foam and its preparation method and application, in particular to a hydrophobic swelling polyurethane foam and its preparation method and application, belonging to the field of polymer materials. Background technique [0002] Polyurethane foam is a kind of polymer foam material produced by the polyaddition reaction of isocyanate monomers and compounds containing active hydrogen (such as: -OH, -COOH, -NH—, etc.) in the presence of a blowing agent. Its main feature is porosity and relatively low density. Because of its excellent physical and mechanical properties, acoustic properties, electrical properties and chemical resistance, it is widely used in furniture production, transportation industry, construction industry, packaging materials and military aerospace industry. [0003] The application of polyurethane foam to the treatment of typical toxic organic pollutants, oily wastewater, various leaked oil products...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of existing polyurethane foams such as low hydrophobicity and small volume adsorption

The preparation of polyurethane foam by in-situ foaming overcomes the inconvenience caused by the excessive volume of the foam during storage and transportation

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