HIGH SOUND-ADSORPTION COEFFICIENT EXPANDED POLYTETRAFLUOROETHYLENE COMPOSITE FIBER COTTON
    28.
    发明公开
    HIGH SOUND-ADSORPTION COEFFICIENT EXPANDED POLYTETRAFLUOROETHYLENE COMPOSITE FIBER COTTON 审中-公开
    膨化聚四氟乙烯 - 维堡肥皂饼干麻醉剂HOHEM KLANGABSORPTIONSKOEFFIZIENTEN

    公开(公告)号:EP3025861A4

    公开(公告)日:2017-03-08

    申请号:EP14829501

    申请日:2014-05-09

    Abstract: The present invention discloses a high sound absorption coefficient expanded PTFE composite fiber cotton, comprising a melt-blown high polymer fibrous layer and an expanded PTFE film layers or a modified film layer of expanded PTFE, the modified film layer of expanded PTFE is made by conducting modification treatment to a PTFE film; the high sound absorption efficiency expanded PTFE composite fiber cotton is made by combining the melt-blown high polymer fibrous layer and the expanded PTFE film layer or the modified film layer of expanded PTFE. Thus, the present invention with better full-frequency sound absorption capability and marked full-frequency sound absorption effect can be bound in a large area or filled on automobiles' engine hoods, body racks or the inner side face of automobile trunks to substantially absorb automobile noise; it has advantages such as chemical inertness, waterproof, dustproof, permeable filterability (internal and external pressure balance), long service life and weldability.

    Abstract translation: 本发明公开了一种高吸声系数膨胀型PTFE复合纤维棉,其特征在于,包括熔喷高分子纤维层和膨体PTFE膜层或膨体PTFE改性膜层,所述膨体PTFE改性膜由导电性 对PTFE膜进行改性处理; 通过将熔喷高分子聚合物纤维层和膨体PTFE膜层或膨胀PTFE改性膜层组合而制成的高吸音效率PTFE复合纤维棉。 因此,具有更好的全频吸音能力和明显的全频吸声效果的本发明可以在大面积上被装载或者填充在汽车发动机罩,机架或汽车后背箱的内侧面上,以充分吸收汽车 噪声; 具有化学惰性,防水,防尘,渗透过滤性(内外压平衡),使用寿命长,焊接性好等优点。

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