現今市面上的防火門都必須符合CNS防火和遮煙性能標準；然而防火門的重量普遍較重，導致耐用度較差，且較不易開啟和關閉。因此，在輕量化設計方面仍有改進的空間，例如降低製造商在運輸和現場組裝過程中遇到的重量問題，以及降低開啟和關閉防火門所需的時間、力量和耐久性。本研究的主要目標為更換現有防火門的芯材，以提升防火性能，甚至降低防火門的重量。進行試驗驗證後，其結果除了直接推廣應用外，也可用於改善「防火門同型式判定原則」，以鼓勵業界開發使用新材料新技術。
本研究收集了100份防火門報告書，並彙整出常用的芯材種類，共設計了16個試體，而實驗並未考慮門樘、結構設計和五金配件等對材料性能的影響。實驗結果顯示岩棉較陶瓷棉輕且具有更好的阻熱性能；纖維水泥板比矽酸鈣板和石膏板重，且阻熱性能較差；矽酸鈣板略重於石膏板，兩者的阻熱性能接近。因此，將陶瓷棉替換為岩棉，或將纖維水泥板替換為矽酸鈣板甚至石膏板都是可行的。當矽酸鈣板和石膏板具有相似的性能時，兩者可以相互替換。
因試體和實尺寸門扇在外觀與結構上存在著差異性，實驗過程中發現試體膨脹變形、層間材破裂、支撐構造強度不足等現象，造成總共只有5個試體有達到30分鐘的防火性能；其餘的皆沒有通過防火測試。儘管如此，雖然試體因結構設計上與防火門不同，但試體本身並沒有因高溫而燒穿或產生裂痕，具有遮焰性能。透過數值模擬分析，除了表達了試體膨脹變形、內部材料破裂及支撐構造強度不足對阻熱性能的影響，另外也顯示試體之邊長和面積的比值越大，非曝火面中心的溫度上升越快。最後藉由模擬計算實尺寸門扇的結果，發現得以達到一小時的阻熱性能。
欲使防火門芯材可替換性，應用至實際產業面，則不同芯材和骨架之間的結構關係，支撐結構及五金配件對門扇阻熱性能影響的程度，甚至熱應力集中或熱橋效應對門扇防火性能影響，未來皆需要進一步探討。

In the current trend, fire doors must meet CNS standards for its exclusive fire resistance and smoke shielding performance on the market. The fire doors end up having less durability and quite challenging to operate, open and close due to heavy weight which will be a serious disadvantage. Therefore, there is a considerable scope for improvements in the lightweight design and simple opening, such as lowering the weight problems manufacturers encounter while shipping and on-site assembly, as well as lowering the time, force and durability needed for the opening and shutting procedure of fire doors. The keen objective of this research is to substitute the core materials on the existing fire doors in order to enhance their varied capabilities and even to reduce the actual weight of fire doors. In addition to direct promotion and application, the test and verification findings may be used to enhance the “principles for the same pattern determination of fire doors for buildings” in order to stimulate the industry to completely develop and employ new materials and technologies.
This study has a total collection of 100 different kind of fire door reports and are commonly being used with core materials which were essentially compiled. In total, there were 16 kind of test samples which were designed all over in this study, without considering structural design and hardware accessories. After experimenting and analyzing, it was then found that rock wool is just much lighter than ceramic wool and as well has better insulation performance; fiber cement board is as well heavier than calcium silicate board and gypsum board and has a poorer insulation performance; calcium silicate board is slightly heavier than gypsum board and their fire resistance are close. Therefore, it is considerably feasible to substitute the ceramic wool with rock wool or substitute fiber cement with calcium silicate board or even on gypsum board. However, calcium silicate board and gypsum board can be mutually substituted when they have similar properties.
The ultimate test samples and actual size of the doors will have a different appearance and structures of its own. During the experiment, phenomena such as expansion deformation of the test sample, interlayer material rupture and insufficient strength of the supporting structure were found, resulting in only 5 kind of test samples achieving an insulation of 30 minutes; the rest have not passed the fire resistance test. Nevertheless, although the structure of the test sample is entirely different from that of the fire door, the test sample itself did not burn through or produce cracks due to high temperatures, demonstrating integrity. Through simulation analysis, in addition to expressing the effects of expansion deformation of the test sample, internal material rupture and insufficient strength of the supporting structure on insulation, it also shows that larger the ratio of the edge length to the area of the test sample, the faster will be the temperature rises at the center of the unexposed surface. Finally, through calculations of full-scale door, it was found that it can achieve a 1-hour insulation performance.
In order to make the substitutability of core materials for fire doors applicable to practical industries, the structural relationship between different core materials and skeleton, the degree to which the supporting structure and hardware accessories affect the insulation performance of the door, as well as the impact of thermal stress concentration or thermal bridging on the fire resistance performance of the door, require further exploration in the future.

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