The invention relates to an automobile lower heat insulation pad and a manufacturing method thereof. The automobile lower heat insulation pad comprises a glass fiber cotton layer; the first aluminum foil layer is arranged on one side of the glass fiber cotton layer; the composite felt layer is bonded to the side, away from the glass fiber cotton layer, of the first aluminum foil layer, and the side, away from the first aluminum foil layer, of the composite felt layer is fluffy. The partially fused and bonded composite felt layer and the first aluminum foil layer form a reflecting layer structure, and when noise and radiant heat of an engine pass through the composite felt, the noise and the radiant heat are reflected on the first aluminum foil layer; primary primary attenuation is carried out in the fibers which still keep a certain fluffy shape and have a sound absorption effect and the fibers which are bonded together after melting and have a sound insulation effect, the fibers enter the glass fiber cotton to be transmitted, vibrated, stuck and scattered to be attenuated, the glass fiber cotton has a good heat insulation characteristic, noise and heat are greatly attenuated in the structure, and the noise and heat are greatly reduced. The sound insulation effect is remarkably improved, and meanwhile the better heat insulation effect is achieved.
本发明涉及一种汽车下隔热垫及其制造方法,其包括:玻璃纤维棉层;第一铝箔层,其设于所述玻璃纤维棉层的一侧;复合毡层,其粘结于所述第一铝箔层背离所述玻璃纤维棉层的一侧,所述复合毡层背离所述第一铝箔层的一侧呈蓬松状。部分熔融粘结的复合毡层与第一铝箔层形成反射层结构,当发动机噪声、辐射热通过复合毡时,噪声和辐射热在第一铝箔层进行反射,在仍保持一定蓬松状的具有吸声作用的纤维中和融后粘结在一起的具有隔声作用的纤维中进行一次初步衰减,并进入玻璃纤维棉中传递、振动、粘滞、散射而衰减,玻璃纤维棉具有很好的隔热特性,噪声和热在这一结构中被大量衰减,显著提高了隔音效果,同时达到更佳的隔热效果。
Automobile lower heat insulation pad and manufacturing method thereof
一种汽车下隔热垫及其制造方法
2023-11-24
Patent
Elektronische Ressource
Chinesisch
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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