The invention relates to the technical field of sound insulation pads, in particular to a passenger compartment front wall sound insulation pad and a preparation method thereof. The passenger compartment front wall sound insulation pad sequentially comprises a sound absorption cotton felt, an aerogel composite felt and a sound insulation cotton felt from outside to inside. The aerogel composite felt is formed by compositing felt and an aerogel precursor according to the mass ratio of (40-80): (10-60). Through the multi-layer combination design, the sound insulation performance is remarkably improved, and light weight is achieved; the aerogel powder is doped into the aerogel composite felt, so that a porous net structure is formed, and the sound absorption and insulation performance is remarkably improved.
本申请涉及隔音垫技术领域,特别涉及一种乘客舱前围隔音垫及其制备方法。本申请的乘客舱前围隔音垫由外到内依次包括吸音棉毡、气凝胶复合毡和隔音棉毡;所述气凝胶复合毡由毛毡和气凝胶前驱体按照质量比40‑80:10‑60复合构成。本申请通过多层组合设计,显著提高了隔音性能并实现了轻量化;气凝胶复合毡中掺入气凝胶粉,形成了多孔网状结构,显著提高了吸隔音性能。
Passenger compartment front wall sound insulation pad and preparation method thereof
一种乘客舱前围隔音垫及其制备方法
2022-11-08
Patent
Electronic Resource
Chinese
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 |
European Patent Office | 2022
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