SBIR Phase I: Smart Window Film for Ultra-high Thermal and Acoustic Insulation

这个小企业创新研究（SBIR）第一阶段项目的更广泛的影响/商业潜力不仅将产生一个多功能隔热结构，易于安装在任何现有的单、双、甚至三窗格窗户上，减少建筑总能耗，而且还将改善在寒冷气候下与单窗格窗户相关的冷凝水问题和居住者不适。此外，智能窗户系统包括一个隔音层，可以衰减噪音，性能优于三窗格窗户，而不会降低光学性能。在寒冷的气候条件下，使用低e涂层的薄膜将证明冬季发生内部冷凝所需的外部温度条件（-5°C）。拟议的方法优于现有的铝框架和传统间隔的双层或三窗格窗户，并将在已经流行的节能窗户市场上占有份额（61.6%，或全球约100亿美元）。根据我们对设计尺寸为1平方英尺的智能窗户的成本估算（包括可扩展卷对卷工艺中的所有化学和能源成本），可以实现5美元/平方英尺的制造成本，为客户提供了一个巨大的激励，并在5年内获得回报期。拟议的项目将同时解决现有单窗格窗户的热、光学和声学问题。通过超低导热支撑材料和薄膜上两种不同的涂层（红外区透射率低）的组合，薄窗膜实现了厚度在3mm以内的低u系数（≤ 0.45），薄窗膜可以很容易地附着在单窗格玻璃窗上。它还产生噪声衰减&amp；#8805；50分贝，设计的空腔嵌入窗膜，以衰减噪声传输。所得到的薄片不仅可以提高隔音性能，而且可以减少所用多孔膜的体积，从而降低成本。此外，智能薄膜展示了基于温度响应的智能玻璃的全季节运行，可调的近红外透射率在可调的热致变色涂层中，无需电力消耗。该薄膜通过控制颗粒状材料界面中的光散射来控制雾霾，并降低了所提出的智能薄膜中使用的结构材料的体积分数。结合低e和热致变色涂层将有助于薄膜实现高显色指数，因为涂层的可见光透过率是彼此的优秀互补，从而在可见光谱上表现出广泛和均匀的透射。

The broader impact/commercial potential of this Small Business Innovation Research (SBIR) Phase I project will not only produce a multifunctional thermal insulation structure that is easy to install onto any existing single-, double-, or even triple-pane windows in reducing total building energy consumption, but also improve water condensation issues and occupant discomfort that are associated with single-pane windows in cool climates. Furthermore, the smart window system includes a soundproof layer that can attenuate noise, outperforming a triple-pane window without deterioration of optical properties. In cold climates, the film, which uses a low-e coating, will prove the exterior temperature condition ( -5 °C) required for interior condensation to occur in winter. The proposed approach outperforms existing doubleor triple-pane windows with Al frames and conventional spacers and will enjoy a share of the already-popular energy saving windows market (61.6%, or ~$10 billion Global). According to our cost estimate for a 1 square foot smart window of the design dimension proposed (including all chemical and energy costs in a scalable roll-to-roll process), a $5/ft2 manufacturing cost can be achieved, providing a great incentive with a pay-off period within 5 years for customers.The proposed project will address thermal, optical, and acoustic concerns on an existing singlepane window simultaneously. The thin window film realizes a low U-factor (≤ 0.45) within 3mm in thickness, through the combination of a super-low thermal conductive supporting material, and two distinct coatings (low transmittance in infrared region) on a thin film, which can be readily attached to a single-pane glass window. It also yields noise attenuation ≥ 50 dB with designed cavities embedded in the window film to attenuate noise transmission. The resulting sheet can not only enhance acoustic insulation performance but also reduce the volume of the porous membrane used and thus cost. In addition, the smart film demonstrates all-season operation of smart-glass based on temperature-responsive, tunable Near-IR transmittance in a tunable thermochromic coating without electric power consumption. The film controls haze by Page 11 controlling light scattering in the interface of granulate materials and reduces the volume fraction of the structural material used in the proposed smart film. The combined low-e and thermochromic coatings will help the film achieve a high color rendering index because visible transmittances for the coatings are excellent complements to each other, thus exhibiting a broad and uniform transmission over the visible spectrum.