Lightweight glass fiber insulation
    1.
    发明授权
    Lightweight glass fiber insulation 有权
    轻质玻璃纤维绝缘

    公开(公告)号:US06294491B1

    公开(公告)日:2001-09-25

    申请号:US09311511

    申请日:1999-05-13

    IPC分类号: C03C1300

    摘要: An insulation product especially suited for use as an aircraft insulation includes a blanket of randomly oriented entangled glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/−0.25 microns. The blanket has a density between about 0.25 and about 1.5 pounds per cubic foot and a thickness between about 0.35 inches and about 2.0 inches. The blanket, exclusive of anything else, has an average machine direction tensile strength of at least 0.6 pounds/inch of blanket width and an average cross machine direction tensile strength of at least 0.3 pounds/inch of blanket length; a transverse airflow resistance between about 300 Rayls and about 1800 Rayls; and a thermal conductivity equal to or less than about 0.32 BTU-in/hr-ft2-° F. The glass fibers of the blanket have a biodissolution rate in excess of 150 ng/cm2/hr.

    摘要翻译: 特别适用于飞机绝缘的绝缘产品包括由热固性粘合剂粘合在一起并且具有约1 +/- 0.25微米的平均直径的随机取向缠结玻璃纤维的毯子。 毯子具有约0.25至约1.5磅/立方英尺之间的密度和约0.35英寸至约2.0英寸之间的厚度。 除了其他任何东西之外,毯子的平均机器方向拉伸强度为橡皮布宽度的至少0.6磅/英寸,平均横向拉伸强度为橡皮布长度的至少0.3磅/英寸。 约300雷和约1800雷之间的横向气流阻力; 和热导率等于或小于约0.32BTU / in-hr-ft 2 -F。该毯的玻璃纤维的生物溶解速率超过150ng / cm 2 / hr。

    Perforated cellular sound absorption material
    4.
    发明授权
    Perforated cellular sound absorption material 失效
    穿孔蜂窝吸音材料

    公开(公告)号:US5962107A

    公开(公告)日:1999-10-05

    申请号:US960465

    申请日:1997-10-29

    IPC分类号: G10K11/16 B24B3/24 E04B1/82

    摘要: A cellular material, preferably a low density foam material, having an initial average normal incidence sound absorption coefficient for a selected frequency range is perforated to form a perforated cellular sound absorption material. The perforated cellular sound absorption material formed has an average normal incidence sound absorption coefficient for the selected frequency range greater than the initial average normal incidence sound absorption coefficient of the cellular sound absorption material. The depth(s), diameter(s), shape(s) and pattern of the perforations provide the cellular sound absorption material with the improved sound absorption properties that are reflected in the increased average normal incidence sound absorption coefficient of the material.

    摘要翻译: 对具有选定频率范围的初始平均法线入射吸声系数的多孔材料,优选低密度泡沫材料进行穿孔以形成穿孔的细胞吸声材料。 所形成的穿孔的细胞吸声材料具有大于蜂窝吸声材料的初始平均法线入射吸声系数的所选频率范围的平均法线入射吸声系数。 穿孔的深度,直径,形状和图案提供了具有改善的吸声性能的蜂窝吸声材料,其反映在材料的平均法线入射吸声系数的增加中。