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研究生： 戴遐妤
Tai, Hsia-Yu
論文名稱： 將氣凝膠添加於PVB薄膜作為膠合玻璃的應用
Mixing aerogels into PVB films used for laminated glazing
指導教授： 林大惠
Lin, Ta-Hui
學位類別： 碩士
Master
系所名稱： 工學院 - 機械工程學系
Department of Mechanical Engineering
論文出版年： 2015
畢業學年度： 103
語文別： 英文
論文頁數： 89
中文關鍵詞： 氣凝膠 、聚乙烯醇縮丁醛 、膠合玻璃 、隔熱 、混煉
外文關鍵詞： aerogel, PVB, laminated glazing, heat insulation, compounding
相關次數： 點閱：120  下載：6 
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    • 本研究以氣凝膠添加於膠合玻璃中間之PVB膠膜，藉由不同的添加方式與配方，觀察其表面型態以及熱傳導係數，並進一步將膠膜與玻璃合成膠合玻璃，對膠合玻璃進行光學與熱學兩方面的量測。另外本研究也涉及部分對氣凝膠製程的改良。
    研究結果顯示，目前多種製程的PVB膜皆無法兼顧透光度與隔熱性能，在製程1、製程2、製程4中，經過混煉儀混煉的氣凝膠與PVB，經熱壓後會具有好的透明度，接近純PVB膜，但失去隔熱性能。而製程3中，不經混煉儀混煉的PVB與氣凝膠，能夠使熱傳導係數相較於純PVB膜有明顯的下降，製程5中，用兩片純PVB膜中間夾氣凝膠的合成膠膜，熱傳導係數也有下降的現象，但這兩個製程共通的缺點是透光度不好，由於氣凝膠本身為半透明，而PVB粉末在常溫時是白色。
    在膠合玻璃方面，採用製程5系列中兩種配方的PVB膜去合成膠合玻璃，經過熱傳導係數與光學量測後，熱傳導係數有隨氣凝膠濃度提高而下降的趨勢，經計算後U值也會下降，可見光穿透率會明顯下降到50%以下，而可見光反射率也會提高，另外，在紫外線穿透率有明顯下降的現象，紅外線阻隔率則是提高許多，遮蔽係數SC值也在PVB膜添加了氣凝膠之後變少。
    雖然從量測結果可看出以上對於隔熱性能變好的現象，但許多數值仍達不到綠建材標章所規定之範圍，而透光度的降低亦是目前需要克服的主要難題。

    This research focus on adding aerogel into PVB and make PVB films, also assemble PVB film with glazing into laminated glazing. With observation and characterization of PVB film and laminated glass. We recognize the advantages and disadvantages of different process, which give us idea of improving. In addition, the research also involved in improving the preparation of aerogels.
    In this research, the result shows that now the PVB film which aerogel added haven’t manage to have good insulation property meanwhile keep the optic transmittance. In process1, process2, process4, the PVB film didn’t improve in insulation property. In process 3 and process 5, the insulation property improves due to thermal conductivity declined, however, the films from these processes came across the missing of light transmittance.
    For laminated glazing, we adopted the films made in process 5, and in two different recipes. The result shows that the laminated glass with PVB films containing aerogel had lower thermal conductivity compared to those with pure PVB films, UV transmittance and shading coefficient(SC) all declined, but visible light transmittance declined, too.
    Although there are some improvement in laminated glass when aerogel added, we still have to improve to in order to meet the standard of green building material.

    Contents Ⅰ List of Figures Ⅲ List of tables Ⅶ 1. Introduction 1 1.1 The production of silica aerogels 1 1.1.1 Sol–gel synthesis 1 1.1.2 Ageing 3 1.1.3 Drying .3 1.2 Properties of silica aerogel 6 1.2.1 Pore structure .7 1.2.2 Thermal conductivity .9 1.2.3 Optical property 10 1.3 The application of aerogels in insulating materials 11 1.3.1 The application of granular aerogels 12 1.3.2 The application of monolithic aerogels 13 1.4 Objectives 16 2. Experimental apparatus and methods 17 2.1 Medicines 17 2.2 Experimental apparatus 18 2.3 Experimental methods 19 2.3.1 Preparation of aerogel 19 2.3.2 Characterization of aerogel 19 2.3.3 Nano grinding of aerogel powder 19 2.3.4 PVB-film and Laminated glass 20 2.3.5 Characterization of PVB film and laminated glass 21 2.4 Standard 22 3. Results and discussion 24 3.1 Preparation of silica aerogels 24 3.2 The preparation and characterize of PVB film 26 3.2.1 Process 1 26 3.2.2 Process 2 27 3.2.3 Process 3 29 3.2.4 Process 4 30 3.2.5 Process 5 31 3.2.6 Discussion 32 3.3 The performance of laminated glazing 38 3.3.1 Glazing with PVB films from process 5-2 39 3.3.2 Glazing with PVB films from process 5-3 40 3.3.3 Discussion 42 4. Conclusions 46 4.1 Preparation of silica aerogels 46 4.2 The preparation and characterize of PVB film 47 4.3 The performance of laminated glazing 49 5. References 51 Figures and Tables 53

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