Composite based spherical active carbon added with hard polyurethane foam wastes and preparation method for spherical active carbon

Abstract

The invention discloses a composite based spherical active carbon added with hard polyurethane foam wastes. The composite based spherical active carbon is characterized by being prepared from the following raw materials in parts by weight: 44-46 parts of benzyl methacrylate, 39-41 parts of methacrylonitrile, 26-29 parts of ethyl acetate, 2-3 parts of azodiisobutyronitrile, 1.5-2 parts of diisocyanate, 2-3 parts of polyvinyl alcohol, 0.8-1 part of polyethylene oxide lauryl ether, a proper amount of distilled water, a proper amount of acetone, 25-28 parts of sulfonated bitumen powder, 4-5 parts of the hard polyurethane foam wastes, 8-9 parts of silica sol with the solid content being 3% and 0.8-1 part of vinyl triethoxysilane. According to the composite based spherical active carbon, the hard polyurethane foam wastes are taken as main modification components and soaked with the silica sol, so that the roughness is improved; the hard polyurethane foam wastes are modified with vinyl triethoxysilane, so that the hard polyurethane foam wastes are endowed with hydrophobic and oleophylic performances; and the hard polyurethane foam wastes are added into bitumen coating liquid, and a quick adsorption layer can be formed on the spherical surface of polymer resin, so that the oil-water separation effect is enhanced.

Description

technical field [0001] The invention relates to the field of materials, in particular to a composite-based spherical activated carbon added with rigid polyurethane foam waste and a preparation method thereof. Background technique [0002] Spherical activated carbon has been widely used in related fields such as medicine, environmental protection and catalyst carrier because of its good sphericity, high packing density, less particle shedding and fast adsorption and desorption speed. Spherical activated carbon is mainly divided into three categories according to different raw materials: coal-based spherical activated carbon, polymer resin-based spherical activated carbon and pitch-based spherical activated carbon. Among them, coal-based spherical activated carbon has the advantages of cheap raw materials and wide sources, but coal-based activated carbon has high ash content, many impurities, and low mechanical strength, which limits its application and development. Spherical...

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Problems solved by technology

[0004] Polyurethane foam has a large absorption capacity, but its oil-water selectivity is very poor. When it is used as an oil-absorbing material for marine oil spill or industrial waste oil recovery, it will absorb a large amount of water, which cannot meet the requirements as an efficient oil-absorbing material. Good The oil-water discrimination effect can be obtained by constructing rough surfaces and modifying materials with low surface energy on the rough surfaces