利用無機層狀矽酸鹽提昇水性防火塗料的熱安定性與燃燒性質

Effect of inorganic layered silicate addition on the thermal degradation and fire-resistant of water-based fire-retardant coating

詹璧華(Bi-Hua Zhan)

指導教授 ： 郭文正

國立臺北科技大學/工程學院/化學工程研究所/碩士(2008年)

摘要

本研究在探討添加無機層狀矽酸鹽對水性塗料及水性防火塗料之熱安定性與燃燒性質的影響。水性防火塗料的阻燃劑是由聚磷酸銨(Ammonium polyphosphate, APP) 、異戊四醇(Pentaerythritol, PER)及三聚氰胺(Melamine)所組成的膨脹型阻燃劑。本研究也進一步比較添加不同的層狀矽酸鹽如蒙脫土、改質黏土、雲母等，對水性防火塗料之熱安定性與阻燃性的提升效率。首先，在空氣下以熱重分析儀來評估添加不同的層狀矽酸鹽對防火塗膜熱安定性的影響。然後，再以圓錐量熱儀(Cone Calorimeter)對合板試片進行燃燒測試，來進一步探討添加層狀矽酸鹽對防火合板之熱釋放量與發煙量的影響。

在水性塗料中單獨添加層狀矽酸鹽，可提高塗膜之熱安定性並降低其熱重減損量。添加層狀矽酸鹽於水性防火塗料中，也可明顯地提升塗料樹脂之第二段熱裂解的安定性；另一方面，添加層狀矽酸鹽的防火合板試片，在圓錐量熱儀的最大熱釋放率方面也有明顯的降低趨勢。

關鍵字

層狀矽酸鹽 ； 奈米複合材料 ； 水性防火塗料 ； 熱性質 ； 圓錐量熱儀

並列摘要

The goal of this study is to investigate the effect of inorganic layered silicate addition on the thermal stability of water-based coating, and also to discusse the influence of layered silicate addition on thermal stability and flame resistant properties of water-based fire-proof coating. The intumescent fire retardant, used to prepare water-based fire-proof coated, contains pentaerythritol, ammonium polyphosphate and malamine. Effect of layered silicate addition on the thermal stability of water base coating and fire-proof coating was investigated by thermogravimetric analysis (TGA). Cone calorimeter was employed to evaluate the efficiency of layered silicate addition on reducing heat release rate and extinction coefficient of water-based fire retardant coatings.

Results from TGA analysis pointed out that second segment step degradation temperature of EVA water-based coating was significantly elevated by adding small amount of silicate clay or montmorillonite.Data from cone calorimeter analysis also showed that addition of silicate clay or montmorillonite can reduce maximum heat release rate of water-based fire-proof coating significantly.

並列關鍵字

Layered silicate ； Water-based fire-proof coating ； Intumescent fire retardant ； Thermal stability ； Cone calorimeter

參考文獻

[48].莊智勝，不同載體樹脂及其配方對膨脹型防火塗料之特性效應，碩士論文，國立台灣大學森林學研究所，台北，2004。

[50].黃春萍，金屬氫氧化物與奈米黏土於EVA防火相乘效應之研究，碩士論文國立台北科技大學化學工程研究所，台北，2005。

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