Hydrogenation catalyst for soft polyurethane foam, preparation method and application of hydrogenation catalyst, polyurethane foam composition and application of polyurethane foam composition

The invention provides a hydrogenation catalyst for soft polyurethane foam, a preparation method and application of the hydrogenation catalyst, a polyurethane foam composition and application of the polyurethane foam composition. According to the present invention, the hydrogenation catalyst for the soft polyurethane foam obtained through the polypyrrole hydrogenation shows alkalinity so as to accelerate the generation of the polyurethane foam; the polyurethane foam composition comprises the following components in percentage by mass: 35%-43% of polyether polyol, 26%-31% of polymer polyol, 1%-1.5% of a cross-linking agent, 0.6%-1% of a hydrogenation catalyst, 0.4%-0.9% of a foam stabilizer, 1%-1.6% of a pore opening agent, 14%-18% of toluene diisocynate, 9%-13% of diphenylmethane diisocyanate and the balance of water, wherein the total content of the components is 100%. The polyurethane foam prepared by the preparation method is almost free of odor, does not contain heavy metal elements, and keeps tensile str