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Date: 2023-11-04 Author: 科琦气膜
气膜建筑所使用的膜材是一种具有高强度、柔韧性好的薄膜材料，是由纤维编织成织物基材，再在基材两面以树脂为涂层材料加工固定而成的材料。PVDF是二氟化树脂的略称，在PVC膜表面处理上加以PVDF树脂涂层的材料称为PVDF膜。其膜材参数如下：
（1）声学特性 单层膜材的隔音能力只有10dB（分贝），因此，单层膜的气膜建筑只适用于对隔音要求不太高的活动场所。双层膜的气膜建筑隔音能力可以提高到30dB（分贝）。如果在膜体内加装吸音棉或者对内衬采用声学吸音结构设计，则可以进一步提高其隔音能力。
（2）保温特性 单层膜材料气膜建筑的保温性能大致相当于夹层玻璃的保温性，双层膜气膜建筑的保温性能比单层的提高了45%。如果在两层膜材之间加装保温棉，其保温效果基本上与传统建筑的保温效果相同。
（3）采光特性 膜材本身透光而不透明，在白天，可以将直接照射的太阳光柔化为漫射光照亮室内，使得室内采光均匀、柔和、不产生眩光，如果加装保温棉或者避光材料，可以完全屏蔽外界的光线。
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