Noise reduction material, preparation method thereof and automobile hood

The invention relates to the field of automotive materials, in particular to a noise reduction material, a preparation method thereof and an automobile hood. The preparation method of the noise reduction material comprises the steps of treating granular corks and fibrous corks with pectinase, and drying to obtain a cork material after enzymolysis; using a mixture of tetraethyl orthosilicate and isocyanate to ultrasonically impregnate the cork material after the enzymolysis to obtain an impregnated cork material; making the impregnated cork material subjected to hot press curing using a thermosetting resin to obtain the noise reduction material. The noise reduction material prepared by the method has good sound insulation and noise reduction effect, light weight, good thermal stability andgood mechanical properties, and is particularly suitable for the automobile hood. 本发明涉及汽车材料领域，特别涉及种降噪材料、其制备方法及汽车引擎盖。所述降噪材料的制备方法为：用果胶酶处理颗粒状的软木和纤维状的软木，经过干燥处理，得到酶解后的软木材料；用正硅酸乙酯和异氰酸酯的混合物对所述酶解后的软木材料进行超声浸渍，得到浸渍后的软木材料；利用热固性树脂对所述浸渍后的